Audio Database


McIntosh MC1000 1,800,000yen( It is 1 set in two sets, 1992 release)

Monophonic power amplifier in which the energy supply of the consecutive output 1000W is possible.

The whole page double balance push pull circuit realized with the output transformer technology of the mac is adopted.
This circuitry is a symmetrical amplifying circuit which concentrated 4 sets of complimentary balance circuitries, and has a structure accepted and materialized by using an output transformer. Thereby, the low distortion is realized, using the power device of a total of 40 20 parallel.

A tick mark has the peak value of 4000W in power output meter.
This meter can be answered at 10 times as high speed as business-use VU meter, and displays the product of an Output voltage and an electric-current value correctly.

A thermal protection, a power guarding system which always prevents clipping distortion, etc. of the sake at the time of emergency heating carry the protection network which also amounts to seven lines.
A power guarding system will start distorted control action, if an amplifier input/output wave is always compared and the difference exceeds 0.3%. A power guarding indicator emits light first and an input signal voltage is controlled. However, an output is not lowered, but it has a structure which makes possible an over drive of a maximum of 14dB until distortion reaches to 2%. This protects a destructive of the speaker which clipping distortion causes.
Furthermore, an output transformer prevents an effluve of DC electric current by the outage of an output transistor etc.

The change to a peek hold mode is possible for power output meter.

The large-sized gilding speaker terminal which can also connect direct the very-thick speaker cable of 5mm of core thickness of a lines is adopted. This termination also supports the banana plug.

By the power controller of an option, on/off of a preamplifier to a power source is possible.


Rating of a mode
Form Monophonic power amplifier
Output power (sinusoidal consecutive output) 1,000W (2ohm, 4ohm, 8ohm)
Load impedance 2ohm, 4ohm, 8ohm
Output frequency band 20Hz - 20kHz
THD (20Hz - 20kHz) 0.005% or less (at the time of 250mW - 1,000W output)
Cross modulation distortion (20Hz - 20kHz) 0.005% or less (less than twice of an Output power)
Frequency band (at the time of 1W output) 20Hz-20kHz+0 -0.25 dB
10Hz-100kHz+0 -3 dB
SN ratio (IHF-A) 115dB (at the time of an Output power)
IHF dynamic head room 1.5dB
Dumping factor 30 or more
Input impedance 10kohm
Input sensitivity 2.5V
Power guarding It is less than THD2% to over-drive 14dB at 1kHz.
Power source AC100V, 50Hz/60 Hz, 1,440W (Underwriters Laboratories/CSA)
Dimensions Width 445x height 255x depth of 491mm
Weight 46kg