|firstname.lastname@example.org's The Forbidden Studio System|
|Last Update: November 02, 2001 at 13:04:22||IP Address: 184.108.40.206|
|Amplifier:||PS Audio 250 Delta monoblock: 250 watts per channel in 8 Ohms; Input impedance is 30k Ohms; No coupling capacitors/direct coupled; JFET inputs and 30 mHz bipolar outputs; full complementary design with feedback of 9dB and distortion under 0.1% for any output or frequency; true isolation transformer with 12 shock mounted 10,000 mFd caps per channel; very quick slew rate of 150; RCA input and binding posts out; detachable power cord is the Audience PowerChord.|
|Preamplifier (or None if Integrated):||Audience CableDriver with PowerChord. Passive DACT 10k volume control unit.|
|Speakers:||Sonus Faber Elector Amator: full range monitor speaker; 88 dB/W/m @ 8 Ohms; rewired to have a single set of terminals only.|
Sunfire True Subwoofer Mk II: 18-125 Hz; modifications by Audience include a PowerChord, upgraded power supply and other componentry.
|CD Player/DAC:||PS Audio Lambda CD Drive with 75 Ohm RCA output. |
Theta DS Pro basic III mod A: 8x sampling; 2x 56001 processors/86 MIPS with 20 Bit resolution; 4.2V rms output level.
|Other Source(s):||NAD 1600 Tuner|
|Speaker Cables/Interconnects:||Audience Maestro Speaker Cables: a 20 foot pair go from the main amps to the monitors. |
Audience Maestro Interconnects, a 2 meter pair go from the cabledriver into main amps and a 8 meter pair go from the cabledriver into the subwoofer.
Audience Au24 Interconnects: a 3/4 meter pair go from passive unit into cabledriver and a 1 meter pair go from convertor into passive unit.
|Other (Power Conditioner, Racks etc.):||There are total of six (6) electrical feeds into the room. |
There are four (4) primary dedicated circuits wired with armored cable directly from the service panel into the metal outlet boxes: two 20-amp lines, 180 degrees out-of-phase, power the main amplifiers; one 15-amp line is dedicated to analog gear; and one 15-amp line is dedicated to digital gear. All outlet receptacles are Hubbell hospital grade with isolated grounds, which prevents all that metal shielding from becoming an antenna.
Another 20-amp circuit powers the subwoofer and the remaining 20-amp circuit is wired for general room use.
The electrical service itself is well grounded outside the dwelling, which is more important than many realize.
|Tweaks:||Spiked stands under the power amplifiers.|
Isolation cushions under shelving.
Vibrapods under the digital front-end gear.
auricap 600v power conditioning caps on 120v L-N legs of each piece of powered equipment.
|Room Size (LxWxH):||17 x 12 x 8|
|Room Comments/Treatments:||My studio room is designed specifically for audio listening, yet functions as part of a modern home. It is of typical size (1594 cu. ft.) though an excellent sounding room, calculated as a #3 in terms of quality according to the formula provided by M.M. Louden in The Complete Guide to High-End Audio.|
The floor is a double joist, suspended technique, and covered with Berber carpeting. The interior walls are a double offset construction, set 16" on center, and finished with a total of 2.5 inches of dry wall. The ceiling is double layered drywall with overhead track lighting fed from a normal house circuit . All ceiling and wall cavities are loosely filled with fiberglass insulation.
The entry door into the room is a high quality, double paned, divided light exterior door carefully sealed around its entire perimeter. There are two 3' X 5' exterior windows covered with inset vertical blinds. One ventilation outlet is supplied by means of a flexible duct and there is no cold air return.
Front and side wall surfaces are treated with a variety of custom made absorbing units that provide the proper damping. There are inverted resonators in the rear corners and the rear wall and ceiling are diffused.
|Music Preferences and Comments:|
|Music Used (Genre/Selections):||Classical - a wide range from Adams to Zappa.|
Operas - over 50 and counting.
Jazz's big hitters...
And a variety of others...
|System Goals/Comments:||Reproduce the female voice and piano beautifully.|
Reproduce the pipe organ's sound with true balance and resonance.
Set a stage 90 feet wide by 60 feet deep and open. Plus get the major groups within the whole orchestra sounding right.
Reproduce a bass guitar or synth with some oomph.
|System Strengths:||Voices and piano sound beautiful and realistic.|
Pipe organ's sound has believable presence and resonance.
Stage sounds 60 feet wide and 30 feet deep.
Bass guitar or synth do have some oomph.
|System Weaknesses:||I can always tell it is a recording.|
Stage height sounds level, does not project high enough...most likely due to a 8 foot ceiling in the listening room.
High freqency roll-off above 10k kills open sound and realism compared to a live violin...culprit might be the power amps.
Bass is there okay, but a truer bass would be realized by adding a second subwoofer.
|Video/HT System: None|