Audio Database


McIntosh C40 580,000yen(release release time -unknown)

The audio control center in which the imbalanced input of eight includeds, a processor loop and three main outputs, and also a balance input/output terminal were carried for Phono.

All signal switchpoints have adopted the reed relay scheme by digital logic control.
As for these relays sealed in the glass tube, there is little distortion, and since it is insulated from the atmosphere, the long-term robustness is also excellent.

5 band equalizer can perform freely the boost and cut which amount to ±12dB focusing on 30Hz, 150Hz, 500Hz, 1.5kHz, and 10kHz.
Moreover, in a center it1 location, the whole equalizer circuitry is bypassed and an exact flat property is acquired.
There are extension mode and compress mode in a compander system, it is arbitrary and the dynamic range of the source can be rectified.
Moreover, the active loudness control which is unrelated to a master volume and can be adjusted is carried.

The equalizer for analog disks is a powerful thing with the output performance of 100mW or more which is equal to power amplifier seeing. And a precision resistor of class is used for the low-impedance-ized RIAA element 1%, and equalization deflection, and a strain and a noise are stopped few.

The internal organs of the monitor power amplifier with a power guarding are carried out.
The switchover monitor of a listening system and a REC system can not only be possible, but since it also has the external input terminal, it is utilizable for surround amplifier etc.
A power guarding is a protection circuit original with a mac which lowers input level automatically, when a compare difference (strain) is always detected for the wave of an input and an output.

An optional SCR-3 relay unit can perform the power control of a two speakers change or power amplifier with the switchpoint of the front panel.

The full mode selector of seven positions which can respond also to a monophonic recording or the bilingual source.

Signal ON/OFF of an external equalizer, a surround processor, etc. has equipped the possible processor switchpoint in the front panel.

The front panel is a glass with the illumination of gold/teal blue.


Rating of a mode
Form Audio control center
<Preamplifier part>
Frequency characteristic 20Hz - 20000Hz, and +0 -0.5 dB
Output power 2.5V (a main, switchpoints 1 and 2, balance output)
Output load impedance 600ohms (a main, switchpoints 1 and 2, balance output)
Maximum output voltage 8V (a main, switchpoints 1 and 2, a balance output, 20Hz - 20000Hz)
THD A maximum of 0.002% (at the time of an Output power 20Hz - 20000Hz)
Input sensitivity Phono: 2.5mV (at the time of 2.5V Output power) (0.5mV IHF)
High-level: 250mV (at the time of 2.5V Output power) (50mV IHF)
SN ratio (A-network) Phono: 90dB (as opposed to an input of 10mV or less) (84dB IHF)
High-level: 105dB (at the time of below an Output power) (95dB IHF)
The maximum input signal Phono:90mV
High-level: 10V
Input impedance Phono: 47kohm, 65pF
High-level: 22kohm
Voltage gain (gain) Phono->Tape: 40dB
High-level ->Tape: 0dB
Phono->Main: 60dB
High-level ->Main: 20dB
Equalizer control At variable, 30Hz, 150Hz, 500Hz, 1500Hz, and a 10000Hz hub
an a maximum of 12dB Booth -- or a cut
<Monitor amplifier part>
Output 20W+20W
(They are per channel and the minimum sine-wave succession mean-value output to an 8-ohm load intensity.)
In summer, they are 12.6V and 20Hz - 20000Hz of Output-power bands to an 8-ohm load intensity at output RMS.
THD A maximum of 0.005% (by 250mW - arbitrary power to an Output power)
Frequency characteristic 20Hz - 20000Hz, and +0 -0.5 dB
Input sensitivity/impedance 750mV / 27kohm (at the time of an Output power)
SN ratio (A-network) 100dB (at the time of below an Output power) (87dB IHF)
AC-power-source plug socket Power-source interlock: Four pieces
Power-source un-interlocking.: One piece
Power source AC100V, 50Hz/60Hz
Power consumption 25W-58W
Dimensions Width 445x height 137x depth of 432mm (termination included)
Panel control unit path clearance 38mm
Weight 12kg