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PSI Audio present monitor speakers and active bass trap at AES Show NashvilleYamaha introduces CK76 Stage Keyboard and CK OS 2.0PSI Audio celebrates 10th anniversary of active bass trap AVAALake People upgrades MC100 with dedicated 19-inch rackmountPSI Audio introduces active bass trap AVAA C225 for home cinemas and small clubs
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Author Archives: David Bergmann

IsoAcoustics and HEDD announce specially designed isolation brackets for immersive speaker setups

January 23, 2024 at 9:49 am

Close-up photograph of a ceiling-mounted loudspeaker

Renowned studio monitor manufacturer HEDD and speaker isolation specialist IsoAcoustics announce a series of products developed in cooperation. The mounting solutions M05, M07, M20 and M30 are specially designed to decouple HEDD speakers TYPE 05, TYPE 07, TYPE 20 and TYPE 30 when mounted to ceilings or walls in immersive setups. The sonic prowess of the German speaker company meets the innovative engineering of the Canadian isolation experts to provide the ultimate immersive sound experience. Visitors of NAMM Show 2024 can find HEDD showcasing the new solution at booth 14502 and in their own demo room (TKAB, Hall A), IsoAcoustics is located at booth 14822.

Next-level immersive audio: IsoAcoustics and HEDD

Immersive audio introduces new challenges to speaker setups, in particular when it comes to mounting the ceiling speakers. As the information provided by these speakers is often crucial to the sense of space, and contains very minute details and acoustic cues, immaculate playback quality is paramount. Berlin-based speaker manufacturer HEDD is teaming up with IsoAcoustics, the leading innovators in speaker isolation, to present a tailor-fitted solution for ceiling- or wall-mounting the TYPE series monitor speakers. The results are special brackets in combination with the V120 mount from IsoAcoustics – a combination that competently achieves next-level immersive audio playback.

Just my TYPE: HEDD studio monitor speakers

Since 2015, Heinz Electrodynamic Design or HEDD supplies the audio production industry with highly accurate monitor speakers that aim to recreate sound as lifelike as possible. The real history behind HEDD is a lot longer, though: founder and namesake Klaus Heinz has been an integral part of the industry for decades, with his most famous contribution being the air motion transformer or AMT introduced by his previous company ADAM back in 1999. If there is an AMT in a speaker, chances are its design relates back to Klaus Heinz’s work. Today, HEDD offers a comprehensive portfolio of studio monitor speakers across all size categories and integrating more innovative, proprietary technology like CoP, which allows users to decide and switch between ported and closed speakers, and the HEDD Lineariser, which optimizes phase coherence in systems with subwoofers. HEDD speakers are used in studios around the world, the company has equipped Dolby Atmos rooms in Germany, France, the UK, Korea and the USA. Its commitment to sound and material quality has earned the manufacturer a reputation of great esteem among professionals.

Upgrade for every speaker: IsoAcoustics isolation technology

Even the best speakers can be improved by mitigating unwanted resonance – exactly that is what IsoAcoustics has been doing since 2012. With patented technology, vibration from the speakers is dampened before it can cause disturbing resonances in the room, or even get reflected into the cabinet itself, impeding the speaker’s performance. While IsoAcoustics speaker isolation and its astonishing effect on playback clarity has been well established, the recent development of the V120 Mount has made this ground-breaking technology available for wall- and ceiling-mounted speakers as well. Whether mounted directly to the ceiling or to truss-structures, the V120 Mount makes sure that no resonances smear the sound image in the room. Perfect clarity and transparency – and just the ideal upgrade for already outstanding speakers like the HEDD studio monitors.

Special mounting adapters for HEDD speakers

While the IsoAcoustics V120 is generally available independent of speaker manufacturer, the cooperation between IsoAcoustics and HEDD has led to specially designed adapters and mounting brackets for the HEDD models TYPE 05 MK2, TYPE 07 MK2, TYPE 20 MK2 and TYPE 30 MK2. The innovative U brackets are shaped in a way that allows for installing the brackets first and then lifting the monitor into place. The bolt threads slide into place in the slotted holes of the U brackets and can then be fixed into position to ensure perfect sound direction. To compensate for the speaker’s weight, the TYPE 30 MK2 solution uses two V120 isolators. Brilliant speakers perfectly mounted and positioned – the cooperation between IsoAcoustics and HEDD is a serious upgrade for anyone considering an immersive audio setup.

Experience IsoAcoustics and HEDD at NAMM 2024

Visitors of NAMM 2024 in Anaheim, California, can find HEDD showcasing the new custom solution at the RAD Distribution booth 14502 and in their own demo space (TKAB, Hall A). IsoAcoustics can be found at booth 14822. The NAMM Show takes place at the Anaheim Convention Center from 25th to 28th January 2024.

Prices and availability

All specially designed HEDD isolation ceiling mounts by IsoAcoustics are available immediately. They are available as adapters to connect to the V120 system, and as bundles including everything required to set up the speakers. The MSRP are:

  • M05 Custom adapter for TYPE 05 MK2: 29.99 EUR
  • M07 Custom adapter for TYPE 07 MK2): 29.99 EUR
  • M20 Custom adapter for TYPE 20 MK2): 99.99 EUR
  • M30 Custom adapter for TYPE 30 MK2): 139.99 EUR
  • M05 Bundle (incl. C-Bracket / V120 for ceiling mount): 249.99 EUR
  • M05 Bundle (incl. L-Bracket / V120 for ceiling mount): 274.99 EUR
  • M07 Bundle (incl. C-Bracket / V120 for ceiling mount): 249.99 EUR
  • M07 Bundle (incl. L-Bracket / V120 for ceiling mount): 274.99 EUR
  • M20 Bundle (incl. U-Bracket / V120): 274.99 EUR
  • M30 Bundle (incl. U-Bracket / V120): 439.99 EUR

PSI Audio showcases Swiss precision studio monitors and active bass traps at NAMM 2024

January 16, 2024 at 1:53 pm

PSI Audio will present innovative speakers and active bass traps at NAMM 2024. From 25th to 28th January 2024, the Swiss manufacturer will be available for demonstrations and tech chats at Eleven Dimensions Media booth 15302.

Swiss precision speakers from PSI Audio

PSI Audio has long been known for its exceptional speakers. Even back when the company was still developing speakers for the Studer brand, the products were recognized for their uncompromising commitment to absolute sonic fidelity. Achieving clarity and precision in fully analogue music playback systems for professional applications has remained the Swiss manufacturer’s mission, and the means have been refined and redesigned over the years. Today, PSI Audio offers large three-way speakers with a rotatable baffle for horizontal or vertical use like the A25-M; mid-sized high-precision nearfield monitors like the A21-M; and impressive compact monitors like the A14-M. Floor-standing speakers like the A215-M, a centre-speaker solution A214-M, and two subwoofers A125-M and A225-M complete the speaker portfolio.

Tight bass in a tight space: the AVAA system

The deep knowledge of speakers, membranes, and their behaviour in an acoustic space has further led to one of the most innovative developments from PSI Audio, or in the industry: the Active Velocity Acoustic Absorber, or AVAA for short. Functioning as an acoustic hole in the wall, the initial AVAA C20 has improved studio spaces – and entirely non-musical places like boiler rooms – by eliminating resonant low frequencies from the room. The recently added AVAA C214 employs the same concept in a more compact, DSP-driven form, mainly for home audio use. Both iterations of the AVAA are equally stunning: room modes simply disappear, clearing up the acoustic impression of a room, especially in the time domain. An AVAA system can replace passive acoustic material up to 45 times its size, and it works for the entire room, not just a small sweet spot. At NAMM, PSI Audio will be able to demonstrate the system’s efficiency with a special demo box.

Proprietary technology for absolute fidelity

While the AVAA is possibly the most prominent innovation from PSI Audio, it is far from the only one. A number of clever designs ensure the outstanding fidelity of every PSI Audio speaker. CPR (Compensated Phase Response) aligns the different drivers in the time domain, making sure every part of the spectrum reaches the ear in phase with every other part. AOI (Adaptive Output Impedance) constantly monitors the movement of the membrane and feeds this information back into the amplifier to optimize transients and accuracy. PSI Audio even creates proprietary drivers like the Extended Dome Driver (EXD) that combines the strengths of dome and cone constructions while mitigating its respective weaknesses. All these innovations make sure that working with PSI Audio speakers is unparalleled – it’s the real thing.

Experience PSI Audio at NAMM 2024

PSI Audio will exhibit speakers and the AVAA system at NAMM 2024 from 25th to 28th January at the Anaheim Convention Center in Anaheim, California. Visitors of the show are cordially invited to find PSI Audio at booth 15302 with US distributor Eleven Dimensions Media.

IsoAcoustics provides audio isolation for Massey Hall’s Deane Cameron Recording Studio

January 9, 2024 at 9:44 am

Close-up photograph of a ceiling-mounted loudspeaker

In the course of the extensive renovation of renowned concert venue Massey Hall, a Dolby Atmos studio for capturing live audio and producing music was integrated. Due to a recommendation by Grammy Award winning producer Eddie Kramer, IsoAcoustics provided the audio isolation for the sophisticated speaker system, including custom solutions for the ceiling speakers featuring the innovative V120 mounts. Doug McKendrick, Vice President Production & Technology of the Corporation of Massey Hall and Roy Thomson Hall, is impressed with the results and particularly the contribution by IsoAcoustics: “I was pleasantly surprised by how much of a difference it made.”

Massey Hall: a legend reborn

Dating back to 1894, Massey Hall is the oldest concert hall in Canada, but has recently undergone extensive renovations. Doug McKendrick, Vice President Production & Technology of the Corporation of Massey Hall and Roy Thomson Hall, describes the scope of the project: “Over the years, the wear and tear had become evident, prompting a monumental renovation project in 2013. This endeavor encompassed a comprehensive restoration of the hall itself and the construction of a new 7-story tower attached to the south side of Massey Hall, named the Allied Music Centre.” The new building houses a venue, a bar, a theatre … and a state-of-the-art recording studio on the 7th floor.

Deane Cameron Recording Studio: content capture in Dolby Atmos

Named after the late President and CEO of the Corporation of Massey Hall and Roy Thomson Hall Deane Cameron, the newly established recording studio is connected to its dedicated recording rooms, but also to all venues in Massey Hall and the Allied Music Centre. “The integration of content capture, encompassing both video and audio, was a significant emphasis during our venue’s renovation,” McKendrick explains. “As part of this effort, we’ve introduced the Deane Cameron Recording Studio, situated on the 7th floor. This studio serves as the central hub for audio capture within the building and is equipped with a cutting-edge 9.1.4 Dolby Atmos mixing and monitoring system.”

Eddie Kramer recommended Dolby Atmos

A marked difference between the Deane Cameron Recording Studio and similar facilities is its versatility. The studio can capture audio from Massey Hall and all venues in the Allied Music Centre via fiber optic connections, allowing for astonishing flexibility when it comes to recording events. But even without the venues, the studio provides a live recording room and multiple isolation booths, giving upcoming artists a chance to record their visions with top-quality equipment. And with its Dolby Atmos setup, Deane Cameron Recording Studio is fully capable of creating immersive audio experiences. “As we considered our studio project, Eddie Kramer’s encouragement to explore the Dolby Atmos technology resonated with us. It felt short-sighted to construct a new studio without the infrastructure to support Dolby Atmos and other immersive formats.” McKendrick very much supports the current trend towards immersive formats. “The inclusion of Dolby Atmos technology adds a new dimension to our capabilities. It opens the door for immersive audio mixing, which has the potential to elevate the listening experience and creativity for artists and audiences alike. We eagerly anticipate the creative possibilities that Dolby Atmos will bring to our work.”

IsoAcoustics audio isolation optimizes the listening environment

The monitoring setup at the Deane Cameron Recording Studio consists of ATC speakers, and the ceiling speakers in particular posed a challenge. McKendrick eventually entrusted IsoAcoustics with finding a solution. “We sought a product capable of supporting the weight, which is substantial at 66 lbs.” The IsoAcoustics V120 was perfect for the job. “We wanted a solution with a sleek and aesthetically pleasing design. Dave Morrison and his team at IsoAcoustics exceeded our expectations, delivering an outstanding product that also provides isolation. This combination makes this new product truly remarkable.” The suggestion to work with IsoAcoustics came, once again, from Grammy Award winning engineer and producer Eddie Kramer (Jimi Hendrix, Led Zeppelin, The Rolling Stones), who acts as an advisor for Massey Hall. “I thought: how are we going to hang these heavy ATC SMC25A speakers from the ceiling?” Kramer reminisces. “We checked everywhere and couldn’t find anything that would give us the swivel and angles we would need for Dolby Atmos. So who could we talk too? I called Dave Morrison at IsoAcoustics and in a short time we had a plan. With their can-do attitude and old-fashioned ingenuity we had our solution. Secure, flexible, and sounding amazing.” 

The control room featured a pipe grid structure connected to the ceiling. The isolation brackets were mounted to the metal tube structures using truss clamps. The ceiling tubes allowed the monitors to be positioned correctly and the IsoAcoustics V120 mount isolated the monitors from the structure and allowed the monitors to be rotated and tilted so the position and focus of the monitors could be optimized for the Dolby Atmos setup. Doug McKendrick is excited about the solution: “We were all deeply impressed by the precision and attention to detail displayed by Dave and the IsoAcoustics team. They delivered exactly as promised, precisely when they said they would. The resulting product seamlessly installed on the first attempt. Their dedication and support were truly remarkable, and we are immensely grateful for their help.”

The audible difference

When the studio was built, McKendrick first tried the rooms without audio isolation. “We deliberately began our work without any ISO-PUCKs installed to genuinely experience the room’s characteristics. Then, we began isolating various elements. I was pleasantly surprised by how much of a difference it made; it notably cleared up some low mid frequencies and generally improved the overall audio quality.” This led to a considerably better starting point when it came to finalizing the room with room EQ. “In my experience, when it came to fine-tuning the room, the ISO-PUCKs played a crucial role in addressing certain issues even before we resorted to using measurement microphones and equalization. Being able to resolve problems without relying on EQ adjustments is a significant advantage and well worth the effort.” Both the ISO-PUCKs and the V120 mounts that were used for the ceiling speakers mitigate the transfer of vibration into the supporting structure and cavities, reducing the excitation of the supporting structure, the transfer of energy through the structure, and the conduction of vibrations back into the speaker. 

IsoAcoustics Product Selector and mobile app is now available in 7 languages

December 12, 2023 at 9:37 am

Promotional image for the IsoAcoustics Product Selector and mobile app showing the app running on a notebook and smartphones

IsoAcoustics expands the global reach of its Product Selector and the IsoAcoustics mobile app by introducing support for seven languages. Both tools now cater to a diverse international audience. The Product Selector, a well-established web application, seamlessly guides users in identifying the ideal IsoAcoustics product to enhance their speakers and audio devices. The mobile app, launched in January and well-received since, is poised for increased popularity with the latest multilingual update. Now available in English, French, Spanish, German, Italian, Chinese, and Korean, the app not only assists with product selection but also provides detailed explanations for each item and delivers the latest news from IsoAcoustics. This comprehensive language update is set to elevate the user experience for audio enthusiasts worldwide.

7 languages to choose from

While the advantages of acoustic isolation are universal, the same cannot necessarily be said of the English language. Motivated by the positive reception of the IsoAcoustics mobile app, IsoAcoustics has now released an update that will include support for six additional languages: French, Spanish, German, Italian, Chinese, and Korean. With IsoAcoustics products gaining popularity around the world, proper localization was necessary to ensure accessibility for users everywhere. The translations are not restricted to the user interface but include the entire content of the app with all background information on products, technology, and news updates. Both the mobile app and browser application automatically detect the default language of the device and set themselves accordingly. The web application also features a drop-down menu to freely select the preferred language.

Product Selector Wizard facilitates perfect isolation

IsoAcoustics patented innovations underscore the significant benefits of decoupling audio devices to enhance sound quality. Achieving optimal results necessitates selecting the right products, and to facilitate this process, IsoAcoustics introduces the Product Selector Wizard — an intuitive tool designed to guide users toward their ideal audio solution. Choosing from the vast catalog of over 5,000 speakers and devices yields one or more product suggestions ideal for the application at hand. If a model is not listed in the Product Selector, the Wizard will ask a few questions about the application and then make a matching product recommendation. Aside from recommending the correct IsoAcoustics product, the Product Selector also considers thread sizes for the award-winning GAIA products that replace the speaker’s feet. The users do not need to study technical data for the entire IsoAcoustics portfolio, but instead, they can just pick the devices in their setup and trust the Product Selector Wizard to recommend the most suitable isolators, backed by the expertise of the world’s leading audio isolation specialist.

Audio isolation for professionals and audiophiles

Audio professionals and audiophile enthusiasts often differ markedly in their requirements concerning products and sound. IsoAcoustics acknowledges these differences and caters to each field individually. The underlying working principle is very much the same, though: the energy transfer between a speaker or device and its supporting surface is mitigated in a controlled and directed manner. These resonances cannot excite other surfaces to generate noise, and they cannot reflect back into the device to cause internal interference. As a result, the playback becomes clearer, more transparent and accurate – acoustic isolation is the easiest way to considerably upgrade a good setup.

Lake People MC100 monitor controller available now

December 6, 2023 at 12:13 pm

Product photograph showing the Lake People MC100 monitor controller in front of a neutral background

The Lake People MC100 monitor controller is available immediately from retailers and via www.cma.audio. The comprehensively equipped central listening station provides two balanced XLR inputs, one unbalanced RCA input, a 3.5-mm input jack for mobile devices and a digital USB input for PCM with up to 384 kHz at 32 bit or DSD 256. Three pairs of monitor speakers can be connected via XLR outputs, an additional subwoofer out is available separately. Metering instruments are integrated via two slave outs. Both inputs and outputs can be set up to work mutually exclusive or be active at the same time. A high-quality headphone amplifier with X-Feed circuitry adds listening comfort.

Diversity of sources, diversity of inputs

The Lake People MC100 offers a variety of different inputs for all sorts of sources. Two balanced analogue XLR inputs are the solid foundation for most studio applications. An unbalanced RCA input connects to an additional analogue source. Mobile devices can be spontaneously integrated via the stereo minijack on the front. A USB connector also allows for digital input of PCM signals with up to 384 kHz and 32 bit or DSD 256. All the inputs are conveniently selected on the front of the MC100. The users can decide whether the inputs should cancel each other out, or if multiple inputs can be active at the same time.

Flexible monitor routing

Like the inputs, the output section of the Lake People MC100 leaves nothing to be desired. Up to three pairs of monitor speakers can be connected to the XLR outs, selectable from the front plate. Again, the selection is either mutually exclusive (only one output at a time) or inclusive (multiple outputs active), as chosen by the user. To facilitate level-matching of different systems, the three outputs feature three-step attenuators up to 12 dB. An additional subwoofer output can be activated with every output. The MC100 remembers the subwoofer setting when switching between monitors. Two slave outs feed devices like meters or analyzers, whose input should not be affected by the listening volume setting.

Top-notch headphone amplification

Lake People is well-known to many audio professionals for outstanding headphone amplifiers, which is why a high-quality phones amp is also integrated in the MC100. A powerful amplifier circuit drives headphones connected via 6.3-mm or 3.5-mm output. In addition to the exquisite sound quality, the headphone amp also features the X-Feed feature, which simulates a more natural sound image that resembles speaker playback. This benefits long listening sessions in particular, as ear fatigue is mitigated considerably.

Full-service monitoring

The Lake People MC100 provides all the core features of a monitor controller. This includes muting and dimming the speakers, a mono switch, solo-buttons for left and right channel as well as the option to switch channels and phase-reverse the left channel. A high-quality Alps RK27 potentiometer with 41 steps controls the volume, available from the front through a massive 50-mm knob.

Price and availability

The Lake People MC100 is available immediately through retailers and via www.cma.audio. The MSRP is 1,799.90 EUR (including 19% VAT).

Lake People electronic expands production with new Gauting-based manufacture

August 15, 2023 at 11:34 am

Photograph showing two people working in a technical workshop filled with lots of equipment

Lake People opens a new production facility in Gauting, Germany. In addition to the company’s headquarters in Constance, the team of experienced specialists in the new workshop manufacture Lake People products, the 2 series by Violectric and the Mogami cables for the European market. The other Violectric models, all Niimbus products and the entire R&D department remain at Lake Constance.

Gauting becomes new manufacturing site for Lake People

Lake People opens the new manufacturing site in Gauting in addition to its headquarters in Constance. The team in Upper Bavaria has been supporting the headquarter for some time, the opening of the new facility makes Gauting an official part of the Lake People production. The new location includes specialized workstations for the various steps of production and provide the well-trained personnel with an ideal working environment.

Outstanding quality made in Germany

The new location in Gauting follows the same Lake People policy of absolute quality. The team of experienced specialists manufactures the devices by hand with the same precision, picks the components with the same diligence and tests the results with the same rigour as the Constance-based manufacture. “There was no space for expansion in Constance,” Lake People electronic CEO Christof Mallmann explains. “That is why we decided to create a new facility here in Gauting and fully integrate the team that already supported the headquarter anyway.”

Violectric at Lake Constance, Lake People and Mogami in Bavaria

The two Lake People locations are separated physically as well as in terms of products. The new facility in Gauting manufactures all Lake People products, assembles the Mogami cables and produces the Violectric 2 series (V202 and V222). The entire rest of the Violectric portfolio, including the high-end brand Niimbus, is still manufactured at Lake Constance. The R&D department also remains in Constance with mastermind Fried Reim at the helm. “This expansion gives us the chance to hone and optimize all steps of the production for even greater focus,” Reim is delighted with the development.

Two locations, one team

Despite the physical separation, the Lake People brands remain closely connected. The development for all brands is still in Constance. And the team appears as a unit, as Christof Mallmann describes: “The people in Constance and Gauting constantly communicate with each other and act as one team. For most processes, the distance between the locations is not relevant.”

Velodyne Acoustics VI-Q: Now Available in Specialized Stores

July 20, 2023 at 9:41 am

The VI-Q series from Velodyne is now available at specialized dealers. The manufacturer’s latest subwoofers showcase everything that distinguishes Velodyne subwoofers with powerful Class D amplification, highly efficient switched-mode power supplies, and ultra-light carbon fiber diaphragms. Additionally, the three models feature XLR connections and an exceptionally massive front made of a 21-layer multiplex panel with a material thickness of 50 millimeters to achieve particularly low distortion values.

VI-Q: Numerous Connections for Optimal Connectivity

The VI-Q series offers sealed subwoofers with lightweight carbon fiber diaphragms, 3-inch voice coils, and particularly large magnets for precise and powerful bass reproduction. They are available in three sizes (10 inch, 12 inch, 15 inch) and are suitable for both compact living room systems and full-scale home theaters. Convenient operation is enabled by a 5V USB port for the upcoming V-Connect system for wireless connection. Additionally, there is a trigger input and a pairing button for the app. Connection options include XLR, RCA, and speaker terminals on the back – ensuring optimal connectivity.

Powerful Bass in a Massive Enclosure

The powerful 15-inch model of the VI-Q series offers a maximum sound pressure of 120 dB and Class D amplification of 650 watts RMS or 1200 watts maximum. The 10-inch model has 450 watts RMS (850 watts max.) and the 12-inch subwoofer 500 watts RMS (900 watts max.). The enclosures enhance any living space with their simple design and are precisely tuned for optimal bass. An absolute unique selling point in this price range is the massive 50 mm thick multiplex front panel for low distortion values. The driver cover sits firmly without magnetic mounting to stay in place even at high levels.

Convenient Control with the App

Automatic room correction has long been an important component of Velodyne Acoustics’ flagship subwoofers. With the iWoofer™ app for room adaptation including a 25-band parametric equalizer, the VI-Q series models now offer users full control.

After successful product registration with the manufacturer, there is a voucher for the pro version of the iWoofer™ app.

Prices and General Information

The VI-Q series is now available from authorized dealers. The recommended retail price including VAT is:

1,799.00 Euro (VI-Q 10″)
1,999.00 Euro (VI-Q 12″)
2,499.00 Euro (VI-Q 15″)

Lake People and Violectric offer relay-based volume control

July 11, 2023 at 11:54 am

Close-up phorograph of an audio device showing a volume control knob and transistors

Lake People and Violectric employ relay circuits for immaculate volume control. Relays combine the best sonic and control properties, beating step switches, electronic switches, VCAs, DCAs and even potentiometers. Its superior qualifications justify its technical complexity. Relay-based volume control is available for Lake People MC100, Violectric DHA V5902, Violectric HPA V550 and Niimbus US 5.

Relays for volume in Lake People and Violectric devices

The developers behind the brands Lake People and Violectric use relay circuits for the volume control in their top models. Those circuits are comparably complex and expensive, but deliver a level of quality other technologies cannot achieve. A 256-step resistor network comprised of fixed resistors with low tolerances guarantees absolute precision. In other words: there is no better alternative to control volume than through reed relays.

Challenges for high-quality level control

Electrical engineering has a whole host of possibilities to realize volume control. A step switch delivers outstanding sound performance, but has only a very limited number of steps, is complicated to build and cannot be automated. Electronic switches are easy to automate and are very cheap, but do not fulfil the sonic requirements. A VCA (Voltage Controlled Attenuator) produces distortion and has problems with channel synchronicity; integrated circuits create considerable distortion and noise. A DCA (Digitally Controlled Attenuator) can yield decent results, but cannot quite satisfy high-end demands. However, DCAs are often used.

The classic: potentiometer

The most widely used alternative at least for analogue applications is the potentiometer. The sliding resistors are scalable in their sophistication, so they can be perfectly integrated into specific circuits – there are potentiometers for price-conscious applications and others for more demanding use cases like the Alps RK27. But potentiometers have weaknesses: they are mechanical components and hence subject to wear and tear. Particularly the special grease that is meant to facilitate frictionless operation can deteriorate over time, resulting in scratchy noise. Potentiometers also require buffer amplifiers for undisturbed operation, which means additional electronic expense. As useful as the potentiometer may be, it is not ideal.

The winner: relay

The RCA (Relay Controlled Attenuator) solves many of the problems mentioned. The relays switch between resistor combinations, similar to the step switch, but with more steps and automatable. The relays are operated via rotary encoders, buttons or potentiometers – Lake People uses the latter, as they display the current position of the controller. Lake People and Violectric employ reed relays, as they are encapsuled in a small glass tube with protective gas, making them particularly quiet and isolating them from environmental influences. With 256 steps at 0.4 dB per step, the accordingly equipped Lake People devices achieve a maximum of over 100 dB – more than enough for playback volume control. The low-tolerance fixed resistors allow for great precision, channel balance and thermal stability for discerning listeners.

Why RCA is the best way of controlling volume:

  • no scratching, as there is no sliding resistor surface
  • perfect channel balance
  • ideal crosstalk resistance, as the channels are physically separated
  • larger control range than with a potentiometer
  • multichannel operation easy to realize
  • long-lasting through hermetically sealing wear parts
  • no additional distortion or noise, as there are only fixed resistors in the signal path
  • perfect sound, as there is only one voltage divider in the signal path
  • easy to automate through rotary encoders, buttons, or mechanical actuators

These advantages are offset only slightly by very low noise during volume changes and the high technical complexity and according price. 

Excellent volume control from Lake People and Violectric

Reed relay volume control debuts with the monitor controller MC100 PRO for Lake People. At Violectric, however, the relay has already built a tradition: hifi central DHA V5902 PRO and headphone amplifier HPA V550 PRO offer the 256-steps relay circuit for the outputs. In the high-end field, Niimbus US 5 PRO uses reed relays for absolutely accurate level control and uncoloured sound.

IsoAcoustics launches the Aperta Sub XL isolator for large subwoofers at HIGH END 2023

May 11, 2023 at 9:17 am

Product photo: IsoAcoustics Aperta Sub XL isolator for large subwoofers in front of a neutral background

IsoAcoustics introduces the Aperta Sub XL subwoofer isolator at HIGH END 2023 in Munich, Germany. The new model expands on the Aperta Sub and makes the patented IsoAcoustics technology available for subwoofers of up to 160 lbs (72.5 kg). Managing the challenging low frequency spectrum, the Aperta Sub XL enables large subwoofers to perform at their best. The subtle design does not get in the way of the feet on the subwoofer and remains visually subdued while unleashing the speaker’s full potential. Carpet disks for anchoring the subwoofer into carpeted surfaces are included. IsoAcoustics presents the Aperta Sub XL at HIGH END 2023 from 18th to 21st May in room Atrium 4.2 F210 at the MOC in Munich, Germany.

Aperta Sub XL: for big subwoofers

The Aperta Sub XL brings the patented IsoAcoustics isolation technology to larger subwoofers of up to 160 lbs / 72.5 kg. Taming the power of such mighty speakers is no easy feat, but IsoAcoustics managed to build on the design of the Aperta Sub for smaller subwoofers to perfectly support heavier models. By carefully managing the distribution of low frequencies, the Aperta Sub XL retains the subwoofer’s power while mitigating unwanted side effects, leading to a clearer, more defined sound.

Managing powerful bass: the IsoAcoustics principle

Like its smaller sibling, the IsoAcoustics Aperta Sub XL decouples the subwoofer from the supporting surface. Its specially designed internal isolators absorb the energy that would otherwise be transferred to the structure underneath and cause disturbances of the sound image. It also keeps that energy from reflecting and being conducted back into the subwoofer, where it could cause smearing. The result is a remarkable improvement in terms of clarity and definition – sonic properties that are particularly hard to come by in the low frequency spectrum. 

Aperta: design and functionality

The design of the IsoAcoustics Aperta Sub XL is as clever as it is subtle. It discreetly supports and decouples the subwoofer without drawing much attention. Since most subwoofers come with feet in all four corners, the Aperta Sub XL uses the space between the feet to make contact, an important design decision considering the isolators are directional to maintain the speaker’s energy on-axis. It comes with optional carpet disks that anchor the sub into carpeted surfaces if required. The Aperta Sub XL measures at 14.5” wide by 16” deep by 1.5” high (368 mm x 406 mm x 37 mm). 

Experience IsoAcoustics Aperta Sub XL at HIGH END 2023

IsoAcoustics will show the Aperta Sub XL at hifi trade show HIGH END from the 18th through 21st May 2023 at the MOC in Munich, Germany. Attendees can find IsoAcoustics at Atrium 4.2 F210 and listen to the company’s products in action. The presentations will feature A/B demonstrations with GAIA isolators on Focal Scala Utopia Evo speakers, showcasing the considerable sound difference between GAIA isolators and the speakers’ factory spikes.

Price and availability

The IsoAcoustics Aperta Sub XL will be available in June 2023. The MSRP is 189.99 USD.

Lake People MC100 monitor controller: high-end studio monitoring made in Germany

April 13, 2023 at 11:30 am

Product photograph showing the Lake People MC100 monitor controller in front of a neutral background

Lake People presents the MC100 – the first monitor controller with the exquisite workmanship from Lake Constance in Germany. Four analogue sources can be connected via XLR, RCA or 3.5-mm mini jack, while a USB-C input feeds the internal DA converter with PCM up to 384 kHz and 32 bit as well as DSD 256. The front panel holds switches for three pairs of monitors, a subwoofer output can be added separately. A powerful headphone amplifier drives most types of headphones easily via 3.5-mm or 6.3-mm jacks and provides a special X-FEED circuit for simulating speaker playback. The MC100 also offers mute, dim, mono, channel swap, channel solo and phase reverse functionalities. The large, solid volume knob adjusts the main level through an Alps RK27 potentiometer; in the MC100 PRO, the pot is replaced with a 256-step reed relay circuit. With its feature set and impressive sound, the Lake People MC100 provides studio professionals with optimal control of their monitoring setup.

Comprehensive control for sophisticated studio monitors

The Lake People MC100 combines everything required of a modern monitor controller: comprehensive connectivity for analogue and digital signal sources, multiple selectable monitor outputs with subwoofer option, monitoring functionalities for technical checks, and a headphone amplifier with X-Feed. The established Lake People sound quality thus benefits a studio’s entire fleet of speakers – with as little noise and distortion as technically possible.

XLR, RCA, jack, USB – the best input for every source

Studios often comprise a whole host of sources that need to be integrated into the monitoring system. The Lake People MC100 enables connection of very different devices and their choice via the front panel. Two analogue stereo signals can be plugged into the balanced XLR sockets, one more analogue input can be hooked up to the unbalanced RCA connectors. For the quick and easy integration of mobile devices, the front panel offers a 3.5-mm (1/8 inch) jack input. The fifth source option is a USB-C input with a DA converter that works with PCM up to 384 kHz and 32 bit as well as with DSD 256 in outstanding Lake People quality. The users can opt to have the input selectors releasing each other, or allow for multiple inputs to be selected at the same time, summing the signals. 

Three monitoring systems, a subwoofer and more

The output stage of the Lake People MC100 is equally well equipped. Three balanced XLR outs allow for switching between three different sets of speakers. Each output can be attenuated by up to 12 dB. Like the inputs, the outputs can mutually deactivate, or select multiple outs at the same time, as per user choice. The subwoofer output can be activated independently to enhance the selected output – its status is saved with the respective activated speaker out, so the subwoofer automatically activates or deactivates with the output selection. In addition to these speaker outs, the MC100 also features two slave outputs as balanced XLR. These carry the selected input signal with no influence from the level knob, so they can feed measuring devices like level meters or analyzers.

Headphone amplifier with X-Feed

The renowned Lake People headphone amplifiers have also found their way into the MC100. A powerful amp drives even more challenging sets of headphones via the 6.3-mm (1/4 inch) or the 3.5-mm (1/8 inch) jack outputs on the front. A switch activates the headphone output, a separate volume knob defines its level. An additional switch and knob control the X-Feed circuit that regulates the crosstalk between left and right cans to simulate speaker playback and counteract localization problems that often occur in headphone playback. The result is a very natural listening experience that allows for extended sessions with very little ear fatigue.

All monitoring features integrated

The Lake People MC100 offers all the features required of a monitor controller: mute and dim switches to immediately reduce the listening levels, a mono switch to check for mono compatibility. Left and right channel can be swapped and monitored separately. The left channel can be phase reversed to check the side signal or investigate phase alignment issues. The level is controlled with a proven Alps RK27 potentiometer with 41 steps and a solid 50-mm knob. The optional MC100 PRO variant replaces the Alps potentiometer with a 256-step reed relay control, adding advantages in terms of both sound and longevity.

Prices and availability

The Lake People MC100 is available from late May 2023 through retail and via www.cma.audio. The MSRP for the MC100 is 1,799.90 EUR, for the MC100 PRO with reed relay volume control 2,399.90 EUR (including 19% VAT).