From Broadcast to Home Recording to Digital Networks—Where the New audioXpress is Going

AXCover_122013Dec_120pxFor readers seeing this “second” issue of audioXpress since we introduced our new format and layout last month, I feel I should explain the concept a little more. Our target deadline for this relaunch was decided some time ago and I couldn’t think of a better place to introduce our “new” magazine than the AES convention in New York City!

I can summarize our concept in a few words: more (of what our readers expect), electronics (our roots), and audio innovation (our focus).

We are proud of our heritage as Audio Amateur, Audio Electronics, Glass Audio, and Speaker Builder magazines. Those titles were born in a time when amateur radio was still developing hand-in-hand with electronics and radio technology. And that is precisely why audioXpress is a part of the electronics publication portfolio of Elektor International Media (EIM).

But you may be wondering about audioXpress’s evolution and what to expect in the future.

It’s important to clarify that we will not continue to be a “home electronics” or consumer application-focused publication. We believe we should share the most interesting audio stories in the industry, independent of their application areas—consumer or professional, music or broadcast oriented. Hence, the innovation focus.

The most important consumer technologies often start with those developed for professionals. So, we will follow audio electronics innovations, together with the all-important disciplines of electroacoustics (and, needless to say, software, digital audio, networking protocols, and audio synthesis).

We believe that a publication such as audioXpress cannot focus only on the “home approach,” which still appeals to many enthusiasts and hobbyists. Some of us clearly remember the 1960s, when live concerts used “consumer” amps and speakers, before there were guitar amps and large speakers. At Woodstock, there were McIntosh amps (now a purely home audio brand) and the PAs were early versions of the JBL speakers (today both a pro and a consumer brand). Five years later, all the big “pro audio” brands in live sound, such as Electro-Voice and JBL, dominated that market (in the US at least). During this time, things were different in the recording studios. There, technology was first “borrowed” from radio and TV broadcasting. This is long before we had “home studios” using computers. And where exactly did that come from?

In the era of the Internet, blogs, and social networks, many magazines have disappeared. But we know a magazine can flourish. In addition to its content and its readers, a magazine must also have a purpose. It must provide a sense of community. More importantly, it needs to offer readers content they can’t find elsewhere. It does not matter if our readers are professionals, students, or enthusiasts. Our common interest unites us, whatever the platform: print, online, Facebook, Twitter, e-mail newsletters, or mobile apps.

We want to build a better audioXpress with more content, representing the common interests of the audio community while also reflecting the industry.

João Martins

New Intelligent Amplifiers for the Install Market

Lab.gruppen, a pioneer in the DSP integration concept and amplifier control, recently introduced the new localized utility compact intelligent amplification (LUCIA) decentralized installation amplifier range.

Putting power and audio processing where it is required, Lab.gruppen’s LUCIA is a compact, two-channel, Energy-Star compliant, Class-D amplifier platform. Designed with installation speed and easy configuration in mind, LUCIA combines cutting edge low-impedance amplifier electronics with advanced DSP into the smallest amplifier the company has produced.

LabGruppenRS7866_LUCIALUCIA is designed for small-scale AV applications where high-quality audio is required, without the complication and additional cost of a distributed system with centralized rack-mounted amplification, matrixing, and processing. LUCIA also offers system designers a logical and cost-efficient solution that is ideally suited for corporate boardrooms, classrooms, small lecture theaters, museum multimedia areas, and retail units.

The company offers four models with two power configurations—2 × 60 W and 2 × 120 W—each available with either a four-in, four-out matrix-mixer and configurable DSP features (LUCIA 120/2M, LUCIA 240/2M) or in a basic two-in, two-out configuration (LUCIA 120/2 and LUCIA 240/2). While all the models are equipped with DSP pre-configured “out of the box” for operation in typical applications, the Matrix variants also facilitate easy setup via USB connection (with Windows and Mac LUCIA configuration software) to meet specific system requirements.

Its new Enhanced Bass Profile, a DSP feature, delivers improved low-frequency performance from standard full-range in-ceiling or surface-mount loudspeakers, which may negate the need for a separate subwoofer.

These amplifiers also offer an Auto Load Sense feature, in which the device automatically measures a connected loudspeaker load’s impedance and adjusts itself to deliver full power at all impedances (2 to 8 Ω).

All LUCIA models also come with intelligent fan control for silent operation at low volumes and low noise even at high output when the fan is operational.

Each LUCIA model could conceivably drive up to 16 speakers on a localized low-impedance system (eight per channel if the loudspeakers were 16 Ω).


Tascam’s High-End Master Recorder and ADDA Converter

Tascamda-3000_p_frIt is good to see new product launches from the TEAC group’s pro audio brand after its recent acquisition by Gibson, especially this upgrade to the legendary DV-RA1000HD recorder. The new Tascam DA-3000 offers the same famous Burr-Brown (now Texas Instruments) ADCs but it comes with a high-quality op-amp (NE5532), optimum condensers, and high-specification resistors for low-noise, high-accuracy, and high-heat capacity in a sleeker, more modern design. This new high-definition master recorder/ADDA converter is designed to fit in any professional or home recording studio, for recording, mastering, broadcasting, replacing a DAT machine, or for audiophiles who want to upgrade their files. This recorder supports high sampling rates up to 192 kHz pulse code modulation (PCM) and 5.6 MHz direct-stream digital (DSD), with the option of recording to SDHC and compact flash with support for USB memory playback.

Tascamda-3000_w_boThe high-precision TCXO fan-less design ensures pristine audio quality. The dual-monaural DACs help eliminate any interference. A balanced XLR I/O, unbalanced RCA I/O along with digital audio I/F AES-EBU, S/PDIF for PCM, and SDIF-3/DSD-raw for DSD is located in the rear of the unit. The DA-3000 warrants a clock frequency accuracy of 1 ppm by TCXO and uses a crystal direct system for low jitter.

The dual-monaural DAC is configured with Texas Instruments (TI) ICs (PCM1795) for each channel and uses TI’s PCM4202 on the A/D conversion, adding an E-I core power transformer with separated coils for digital and analog circuits.

TEAC Corp.

Expanding horizons. Expanding a common passion.

AXCover_112013Nov_120xWelcome to a new audioXpress.

Having followed the audio market and visited the world’s major trade shows for the last 20 years or more, I gained a broad perspective about how exciting and innovative the audio industry is. In particular, I recall the enlightening perspective you can receive from any Audio Engineering Society (AES) convention. The convention provides a place where industry veterans can share their experiences in engineering and communications. We chose to unveil the redesign of audioXpress at the 135th AES Convention.

In the early 1990s, I was fortunate enough to be responsible for a licensed electronics magazine. I quickly learned that the audience of such practical and project-oriented publications was a combination of students, enthusiasts, and industry professionals. They all share a passion for that field, are involved in many different areas, and use their spare time to pursue electronics-related hobbies—the most popular of which is audio electronics.

Since then, I have started several publications addressing the informational needs of professionals in the broadcasting, professional audio, and installation/systems integration markets. I also learned how the evolution of technology from analog to digital and the convergence with IT platforms and IP infrastructure was changing the market landscape at an exponential pace.

During this time, Edward T. Dell, Jr. (1923–2013) was devoting his life to people with a passion for audio electronics and creating magazines including Audio Amateur (rebranded as Audio Electronics in 1996), Glass Audio, Speaker Builder, and later, in 2000, audioXpress. In 2011, Ed Dell sold his company to Elektor International Media (EIM) and retired.

Much in the same spirit of the original Audio Amateur—and with the support of a worldwide organization deeply involved in the electronics industry—we believe that audioXpress will blossom into a fascinating publication that follows the latest audio innovation trends, independent of the application field, and shares a common audience of engineers, consultants, and enthusiasts in the electronics and audio fields, most of whom are involved in R&D.

Although it was deeply rooted in the US, audioXpress—together with its sister publications Voice Coil and the Loudspeaker Industry Sourcebook—reached professionals around the world (e.g., Europe, China, India, and Brazil). It has gained more of a global presence since its acquisition by EIM, which also publishes some of the best technical books in the electronics industry.

I am really excited to bring the “new” audioXpress to a wider global audience, knowing that we can build on the tradition of the original publication and its diversified audience. We are working to create a magazine you will enjoy and anticipate reading every month.

João Martins

Lipinski Sound Announces Move to Self-Powered and Upgradable Loudspeakers

LipinskiL707AMonitorsWebCelebrating its 10th anniversary, Lipinski Sound is going to be at the 135th AES Convention in New York, NY, unveiling a new self-powered and upgradable loudspeaker system. The revised L-707A series of monitors is the latest development in a line of loudspeakers starting with the legendary L-707.

Lipinski’s modular speaker system will be shown with its newly developed L-700A Dual Power Amplifier and L-700B Power Amplifier. So each section of this modular speaker system will be powered by its own individual Class-A amplifier (meaning that Lipinski’s well-regarded Signature speaker system will now be driven by four amplifiers per channel). This is Lipinski’s newest Class AAB, all-discrete, dual-power amplifier based on the low-feedback patented circuitry Lipinski Square OpAmps. This is unique, in that at no point does the audio signal pass through an integrated circuit, condenser, coil, or transformer.

The low-order, low-feedback, Class-A electronic crossover, high/low gently calibrated 60−160 Hz EQ allows for the most common floor/ceiling resonance cancellation. Also on display will be the smaller, more affordable but equally stunning Self-Powered True Reference monitor L-70, based on the same principles as its larger relative.

More products based on Lipinski Sound’s proprietary Class-A op-amps will be exhibited at the AES conference. They include the L629 Compressor—inspired by vintage Fairchild principles and ballistics but with dramatically reduced noise and distortion—and the high-quality L600 Power Supply, a high-current replacement power supply designed as an upgrade for the API 500VPR (capable of powering up to three API 500VPR frames).
Lipinski Sound will be at booth #2562.

TASCAM Supplies Professional-Grade Headphones


TASCAM’s TH-2000 professional-grade headphones are designed for serious audiophiles.

TASCAM, the Pro Audio Division of TEAC America, has been supplying and revolutionizing the market with professional-grade products for decades. Its most recent contribution is the TH-2000 headphones.

The TH-2000 headphones offer a powerful bass response, midranges that round out the mix, crystalline high-frequency ranges for a strong presence and clarity, comfort for hours of listening and use, durability, and TASCAM quality.

TASCAM, creator of the original TH-02 headphones is taking its professional-grade headphones a step further with the TH-2000. The TH-2000’s main features include: a foldable design for easy compact transport, circumaural ear cuffs with an industrial strength flexible headband, and a closed-back isolating design.

The headphone specifications include a 53-mm driver diameter, 60-Ω impedance, 101-dB ±3 sensitivity, 22-kHz-to-18-Hz frequency response, and 1,800-mW maximum power.

For more information, visit

Member Profile: Costas Sarris

Costas Sarris

Costas Sarris

Member Name: Costas Sarris

Location: Thessaloniki / Greece

Education: B Sc, Business Computers

Occupation: Medical Engineer at Biolab Lp Diagnostics

Member Status (how long you have been subscribing to audioXpress): -

Affiliations: Monolith Magnetics audio transformers tester / Mythos Audio ( Hi End speaker Manufacturer ) / Member in most popular Hi Fi forums /

Audio Interests: Hand made Tube Audio projects. Power Tube Amps / Tube Pre-amps / Guitar amps

Most Recent Purchase: a pair of NOS 12AX7 tubes

Current Audio Projects: 2A3 Single Ended Tube Amp / 300B SE Power Tube amp / Single Ended Guitar Tube Amp based on 6L6GC power tube

Dream System: Speakers : Altec Model 19 Circa / Power Amp : Audio Note Ongaku / audio research ref 2 preamp

AX December: Speaker Design, Interactive Sound, Power, & More

audioXpress is all about range—range, in the sense of content diversity. Our international team publishes insightful articles on a wide variety of topics such as speaker design, sound analysis, glass audio projects, and hi-fi product reviews. This month we deliver once again.

First, I suggest you check out the interview with innovative sound designer Andrew Spitz (p. 38). Much of his current work focuses on “interactive experiences.”

Interested in speaker design? We’ve got you covered. Consider starting with the first part of Richard Honeycutt’s series, “Speaker Design School.”

Then  turn to page 8 for the second part of the series “Ribbon and Planar Magnetic Loudspeakers.” Finally, flip to page 14 for the conclusion to Ton Giesberts’s series on his active loudspeaker system project.

The completed PCB for the subwoofer is attached to its heatsink

Ready for a comprehensive transducer test? You can always rely on Vance Dickason’s expert analysis. This month he presents the results of tests he ran on a Morel TiCW 634Nd (p. 30).

The Morel TiCW 634Nd

Once you’ve had your fill of speaker articles, read what Gary Galo thinks about remastered editions of David Hancock’s 1967 recording of the Dallas Symphony’s presentation of Rachmaninoff’s Symphonic Dances (p. 24). What would you choose: vinyl, digital, or both?

If you’re a glass audio enthusiast, head to page 35 to refresh your understanding of power supplies for hollow-state electronics. Transformers and rectifiers are covered in detail.
Lastly, note that the long-awaited amp test page referenced in Richard Honeycutt’s audioXpress November 2012 article—“Differences in Amp Sound: What’s the Truth?”—is now available at