Alon Exotica Grand Reference pic
Tact Audio S-2150 pic
Tact Audio RCS 2.2X pic
Meridian G98DH pic
Acoustic Zen mc2 = zen pic
Acoustic Zen quad amp speaker wire harness pic
Michael Wolff carbon ribbon source & gain pic
Running Springs Audio Haley pic
Acoustics First room treatment pic
Exotica Grand Reference DSP Quad Amp
Updated 1/2006
Alon EGR quad amp setup. Alon passive and active crossovers are replaced by four TacT S2150 amplifiers. Each amp implements crossover, EQ, delay, and correction via TACS software and is connected directly to the drivers. Crossover points in the main channels are 350hz and 2700hz, both with 24dB/octave slopes. TacT RCS 2.2X performs crossover (64hz @ 36dB/octave) and time/phase alignment between the mains and subs, and also serves as a hub for digital signal distribution to the amps. RCS and amplifiers have been fully modded by Aberdeen Components for optimum performance.
I could go on endlessly about the sonic attributes of the system. Suffice it to say that I hear convincing reproduction of music in my room with no dynamic contraints. Tonality is correct. The soundstage is expansive in all dimensions but scales properly to the program material, and individual images are precise with good separation. Thanks to perfect time and phase alignment of the whole system, there is cohesiveness and smoothness of the sound unbecoming of such a large loudspeaker system.
Recent, extensive modifications of the TacT gear has improved all aspects of performance, particularly transparency. The stock TacT equipment is excellent, particularly for the cost. But there is a lot of performance that can only be realized with aftermarket modifications.
Where to go from here ? Well first I will finally purchase a nice rack (perhaps Rix Rax Hoodoo) for my equipment. Also I have plans to push the (exterior) wall behind the speakers outward about 8', which will change the setup from the current long wall loudspeaker placement (14.5' x 17' room) to short wall placement (17' x 23' room). This will also provide plenty of space behind the listening position even with the sliding doors to the family room closed. At the same time I will incorporate some Rives-like treatments into the walls and ceiling, and also have separate grounds installed for the existing dedicated power service into the room.
After the room expansion, a 1080p SXRCD projector, drop-down screen, and rear/surround channels will be added as well. At that time I may replace the TacT RCS 2.2X with the TCS. |
