SONY TA-D88

Commentary

Electronic crossover network with multi-amplifier configuration from 2-way to 4-way.

The frequency band from DC to 100 kHz can be divided into up to four ranges.
The signal paths of Lch and Rch for each range are completely independent of each other in a twin-mono configuration, and the left and right independent power supplies eliminate interference.

The circuit configuration consists of an active filter with 4 ranges and 8 channels for band division, and a pre-buffer amplifier and out-buffer amplifier with a gain of 0 for each channel to prevent adverse effects caused by pre-amplifiers and power amplifiers.

The active filter uses a Bessel filter that provides good sound connections and transients, and at the same time cuts out unwanted bands.

The filter unit is a plug-in type and can be set freely from 2 way to 4 way.

The know-how obtained with the preamplifier TA-E88 has been invested in the examination of wiring and elements to improve sound quality.

Equipped with an audio muting switch and AC outlet.

Thick panels and knobs are all cut out from aluminum and the shape is selected depending on the application up to one screw.

Model Rating

Type	Crossover network
Circuit system	DC unit amplifier configuration, Bessel filter (24dB/oct.)
Cut-off end sub-number	unit-1 : 140, 225, 280 Hz unit-2 : 500, 800, 1 kHz unit-3 : 1.25k, 2k, 2.5 kHz unit-4 : 5k, 8k, 10 kHz
Slope characteristic	24dB/oct (Bessel function curve)
Level control	0 ~ -30dB (1 dB step), - ∞
Input Sensitivity / Impedance	1.0V/50k Ω
Max Input	7.0V
Gain	0dB
Harmonic distortion factor	0.003% (at 1 v output) 0.005% (at 5 v output)
Output impedance	100 Ω
Signal-to-noise ratio (IHF-A)	110 dB at 1 V output
Frequency characteristic	DC ~ 100 kHz + 0 -1dB (Flat Position)
Semiconductor used	Transistor : 100 units FET : 42 Diode : 6 pcs
AC outlet	Power switch not linked : 4 systems, total 900W
Power consumption	20W
External dimensions	Width 480x Height 80x Depth 365 mm
Weight	7.4kg