What’s in the Box? Speaker Design with YG Acoustics' Yoav Geva Page 2

RA: Some loudspeaker manufacturers choose to work with resonance, YG has chosen to take great pains to eliminate resonance from their designs, why is this so important to the YG sonic aesthetic?

YG: “An ideal speaker should play what's on the recording - nothing more, nothing less. A good recording pretty much mirrors what the microphone has captured at a studio/live musical event. Thus, the recording already includes the natural resonances of the instruments that were playing, whether it be the brass structure of a trumpet, the wood of a violin, or the body of a singer. Any parasitic sound-sources from a speaker (whether it be panel-resonances of a flimsy enclosure or air-resonances within the cavity) add a sonic-signature that wasn't part of the original musical performance, so we avoid them and stick to playing only what's on the recording.

“In order to do my job well I must be humble - all I should do is faithfully convey the artistic expression of the composer and the musicians, rather than superimpose my own biases. To anyone who claims to do more by somehow "tuning" the enclosure to have "musical" resonances, I would simply respond by asking whether he/she thinks that they're better than J. S. Bach at creating the music. If not - they shouldn't add resonances to his compositions.”

RA: Over the years since you founded the company in 2002, you’ve developed a number of technologies that are key to the current YG Acoustics loudspeaker design (Cabinet, FocusedElimination, ToroAir, BilletCore, ViseCoil, BilletDome, ForgeCore), can you take a moment to touch on what each of these technologies are comprised of and what was behind their genesis?

YG: “YG Acoustics uses 8 proprietary key technologies, which distinguish our speakers from competing designs. Here is a very brief description of each:”

  • DualCoherent - crossovers designed using software developed in-house, which are unique in delivering both a ruler-flat frequency response and near-zero relative phase. Virtually all other manufacturers use a single off-the-shelf software tool, which can only optimize either the frequency response or phase, but not both. They are forced to choose one and compromise the other.
  • BilletCore - revolutionary cone-drivers machined from solid billet. Unlike traditional drivers, BilletCore™ is not bent, stamped, stretched or woven, preventing fatigue in the material. The result is unmatched rigidity, accuracy and reliability as well as far lower distortion. Tolerances (in our case 20 microns i.e. better than a thousandth of an inch) are 10~15 times tighter than those of traditional cones, which results in superior consistency and excellent left/right pair-matching.
  • BilletDome - a tweeter that ends the age-old debate of hard dome versus soft dome, by combining the best of both. A resonance-free soft dome is supported by a stiff, light airframe machined from aluminum billet. The airframe weighs a mere 30 milligrams (a thousandth of an ounce), but is 14 times thicker than a typical hard dome, so its structural strength is vastly superior even to domes made of the most exotic hard materials.
  • ForgeCore - an ultra-low-distortion motor system. A tweeter’s magnet system serves as both its motor and enclosure. ForgeCore is unique in optimizing both functions (most others optimize the former, but don't take sufficient time to perfect the latter). This is possible thanks to the CNC-machining of highly sophisticated 3D geometries into the magnet system, which dramatically lowers distortion.
  • ToroAir - toroidal mid and tweeter inductors eliminates cross-talk, while their non-magnetic core (a.k.a air-core) is completely free from distortion. Delicate high frequencies are protected over three times better against undesired electromagnetic energy from the low-frequency circuit.
  • ViseCoil - bass inductors encased in a vise-like CNC-machined structure to eliminate vibration and tighten tolerances. Residual loss is reduced by 24%, and linearity is improved by 60%. The result is better control over the woofers, far greater bass impact, and an easier job for most amplifiers.
  • Cabinet - fully CNC-machined, aircraft-grade aluminum construction. Pressure-assembled using exclusive, torque-controlled technology. These enclosures allow YG Acoustics to achieve the lowest vibration ever measured both in-house and by third-parties.
  • FocusedElimination - a sophisticated method for pinpoint elimination of resonances without adding mechanical losses (friction). Standing-waves are eradicated at their source through precise geometries. We achieve this with lower losses (less friction) than traditional stuffing/damping, resulting in a quick reaction-time, freedom from "boxiness" and a tight, punchy bass.

RA: YG Acoustics is obviously a company that spends a huge amount of time and energy on Research & Development into everything from enclosures, baffle materials, internal chassis/bracing, driver design and materials, magnet types, transducer basket construction, driver mounts, crossover type and modularity (to name but a few of the many aspects that comprise your speaker’s designs) with an eye to field-serviceable upgrades for maximum product longevity. What is it that won’t allow you to let the company remain static for even a moment? It seems as if the refinement process is never-ending for YG and you in particular.

YG: “YG Acoustics' unwavering commitment is to provide the absolute best sonic performance possible. Whenever a new idea makes something even better achievable, I must pursue it as well, otherwise I fail to honor that commitment.”

RA: What does the future hold for YG? I see on the website that there are new models coming. Can you discuss those? As far as I can tell, all your designs are fully-passive. Is there any interest on your part to design a hybrid active/passive YG model? A fully active loudspeaker model?

YG: “I can discuss one of the new products – a brand-new "super subwoofer" named inVincible. It'll be available in two modular configurations, both of which will use the largest BilletCore driver ever constructed – 53 cm (21") in diameter. It is currently the most rigid subwoofer driver that we've ever seen or measured. inVincible has a built-in 6,000 watt amplifier.

RA: Thank you for time and detailed responses Yoav!

YG Acoustics LLC
4941 Alliston St. #124 Arvada, CO 80002