Audio Database

The pictorial image of Integra D-655National Information Infrastructure

ONKYO Integra D-655NII
130,000yen(November, 1975 release)

The crossover network which enabled the severe control of a coordination of various properties etc. since the multichannel play nearer to an ideal was realized.

By adopting the dual channel scheme which adopted the power circuit as the right-and-left independency, the influence on the tone quality by the cross interferencee between channels is prevented.

The newly designed Darlington-connection constant current load-intensity filter is adopted as a filter circuit.
Moreover, the influence on a tone quality is using the film capacitor of little extended foil structure for the filter capacitors of all includeds for coupling.

By the transient killer circuit which uses a reed relay, the it1 at the time of switchpoint ON/OFF is prevented.

A high cut and the low cut of a cut-off frequency are possible for an independent variable one.
Moreover, each filter contains eight frequencies by 1 / 2 octave unit. Two frequency standby positions (AUX) which can incorporate the element of a value free besides it are carried.

A slope property can be switched independently to two steps, 12dB / oct., and 6 dB/oct.

A dumping fator can be switched to four steps to 0.7-1.0 at the time of damping slope 12 dB/oct.
This changes a shoulder property and the delicate coordination by a cross-over point is possible.

Level adjustment can be changed to maximum-20.5dB at a 0.5dB step by a precision trimming 43 contact attenuator for every band.


Rating of a mode
Form Electronic crossover network
Number of partitions 1-3 channel
Circuit system CR Active Filter(12dB/oct)
CR Passive Filter(6dB/oct)
Input Buffer, with Output Buffer
Cut-off frequency (Hz)
L. High Cut: 90, 125, 175, 250, 350, 500, 710, 1k
AUX1, 2 (Pass)
M. Low Cut: 90, 125, 175, 250, 350, 500, 710, 1k
AUX1, 2
M. High Cut: 710, 1k, 1.4k, 2k, 2.8k, 4k, 5.7k, 8k
AUX1, 2 (Pass)
H. Low Cut: 710, 1k, 1.4k, 2k, 2.8k, 4k, 5.7k, 8k
AUX1, 2
Slope property 6 dB/oct, 12dB / oct
Dumping fator (12 dB/oct) 0. 7, 0.8, 0.9, 1.0
Level 0--20.5dB (43 points)
Rated input 1V
Insertion loss - Less than 0.8dB
Input impedance 100kohm
Output load impedance 600ohms
THD (1kHz, 1V) 0.005% or less
S/N (IHF A network input shunt) 125dB or more
Transient killer operating time At the time of SW-ON: About 7 seconds
At the time of SW-OFF: About 0.5 second
The semiconductor used Transistor: 56 pieces
Diode: 47 pieces
AC output Switched: Two lines
Unswitched: One line
They are a total of 1100 VA three lines.
Power consumption (Electrical Appliance and Material Control Law specification) 18W
Dimensions Width 440x height 158x depth of 360mm
Weight 9.8kg
Option Wood case CW-6 (3,000yen)