Every hi-end system needs a Black Hole.

Here is a customer email about his:
"I received my Black Hole Anti Wave Generator yesterday, so I can now speak from some experience.
My room has been sounding quite good of late, except for a recalcitrant boomy bass and occasional speech intelligibility issues. The front of the room is lightly treated with RoomTune absorbers, the rear wall with T-Fusors.
I'd been experimenting with 8" x 1' x 4' foam absorbers in the rear corners to try dealing with the bass boom, with some success. Removing those, and replacing them with the BH device has been an unqualified success.

First, the bass response smoothed out considerably. I'd say 90% of the boom is gone, leaving clear, deep bass. Transients are much cleaner now. Drum whacks sound more real and coherent, as do piano notes and plucked bass notes.
I was not prepared for the dramatic increase in speech intelligibility. There's also a greater sense of air and space. I don't have an explanation for these last two observations; I'm just calling it like I hear it.

This product is easily worth the asking price!

There's virtually no set up required. Just plug in the mic and power cord to the back panel, set the volume control to 12:00 and frequency control to max, phase switch to zero, and push the unit into a corner"
-Tom

Spatial Computer has developed a new kind of solution to the most basic problem in high-end audio. All audio systems have to deal with low-frequency room resonances. Just put the Black Hole in the rear of your room, plug it in and turn it on. It does the rest. The results in any quality audio system are amazing.

Your room represents a closed resonant tube from an acoustics perspective. The large peaks and adjacent dips shown above are from interference patterns related to the room’s dimensions. The large aberrations in bass frequency response are the result of acoustic energy reflections from the rear wall interacting with the output of the speaker. If we could remove the rear wall, most of the problem would go away, restoring a response similar to the intrinsic response of the speaker itself.

The Spatial Black Hole is basically a powerful subwoofer with mic & DSP that removes room resonances. It acoustically removes the rear wall.

The Black Hole is an active device that measures incoming acoustic energy at the back of the room (with its included mic) and propagates an out-of-phase energy pattern to effectively neutralize the resonant behavior of the room and provide much flatter and more natural bass at the listening position.

Low-frequency resonant energy also decays slowly in the room, causing poor bass articulation and undesirable build up. By neutralizing resonant energy, the time domain gets much cleaner, providing crisp detailed bass.

One Black Hole can neutralize up to 20dB of dips and peaks for a dramatically more effective solution than common tube traps all in small corner-loaded unit. The Black Hole is like putting 10 tube traps in your room.

Transformative improvements can be had in 2-channel audiophile applications as well as subwoofer equipped home theater systems. The Black Hole is loaded with internal measurement and signal processing hardware. A highly accurate massive 12” woofer delivers the neutralizing punch.

Price: $1295
-Type: Active acoustical resonance damping device with integral signal processing
-Operating range: 22Hz - 220Hz
-Power output: 240 Watts RMS
-Transducer: 12" (300mm) long-throw unit
-Dimensions: 17 x 17 x 16 inches (432 x 432 x 406 mm)
-Weight: 32lb (14.5kg) / Shipping: 38lb (17.3kg)

Call me at 770-667-5633 to discuss this breakthrough product that every high-end system needs.

Read our AudiogoN #1 rated feedback feedback and buy with confidence. We accept Visa, MasterCard & money orders.
GA residents add 6% sales tax.

International sales are paid with bank funds wire transfer.

Brands carried:
Acoustic Zen, Audio Space, Balanced Power Technologies, Bob Carver tube amps, Creek, Denon, Emerald Physics, Epos, ERA, Gallo, Gini Systems, Graham Slee, Jolida, LSA amps and speakers, Marantz Reference, Modwright, Mordaunt Short Loudspeakers, Music Hall, Peachtree Audio, Project, PS Audio, PurePower APS, Quad, Raysonic, Rolls Bellari, Silverline Audio, SONOS, Spatial Computer, Spread Spectrum Technologies, WADIA, Wireworld, Wyred 4 Sound

Sales policies on our website at www.underwoodhifi.com