The McIntosh MC7108 is a multi-channel solid-state power amplifier that can be set up for 4, 5, 6, 7 or 8-channel operation. In its standard configuration it provides eight channels at 40 watts each. Pairs of channels can be bridged to make 100-watt outputs, so channel count can be traded for more power.
Connections are RCA inputs and outputs, screw terminals for the speakers, and 12V triggers. The power cord is captive. Power Guard prevents clipping, and total harmonic distortion stays at or below 2% with up to 14dB of overdrive at 1000Hz.
- Channels
- Configurable for 4, 5, 6, 7 or 8 channels
- 8-channel mode
- 8 x 40W
- 7-channel mode
- 6 x 40W + 1 x 100W bridged
- 6-channel mode
- 4 x 40W + 2 x 100W bridged
- 5-channel mode
- 2 x 40W + 3 x 100W bridged
- 4-channel mode
- 4 x 100W bridged
- Power output
- 40W per channel minimum continuous average sine wave, all channels operating into 4 ohms (12.6V RMS across 4 ohms)
- Bridged output
- 100W into 4 ohms, minimum continuous average sine wave (20V RMS across 4 ohms). Each 100W output bridges a pair of channels.
- Load impedance
- 8 or 4 ohms for all eight channels and for all bridged pairs
- Rated power band
- 20Hz to 20,000Hz
- Harmonic distortion
- 0.005% maximum from 250mW to rated power per channel, 20Hz to 20,000Hz, all channels operating
- SMPTE IM distortion
- 0.005% maximum if instantaneous peak power does not exceed twice the per-channel rating, all channels operating, 20Hz to 20,000Hz
- IHF dynamic headroom
- 1.8dB
- Frequency response
- +0, -0.25dB from 20Hz to 20,000Hz; +0, -3.0dB from 10Hz to 100,000Hz
- Input sensitivity
- 1V (2.5V with level control at center detent)
- Input impedance
- 20,000 ohms
- Signal-to-noise
- 92dB A-weighted (112dB below rated output)
- Damping factor
- 200 at 8 ohms; 100 at 4 ohms (wide band)
- Power Guard
- Prevents clipping; THD does not exceed 2% with up to 14dB overdrive at 1000Hz
- Connections
- RCA inputs and outputs, screw terminals for speakers, 12V triggers
- Power requirements
- 120V, 50/60Hz, 8A, UL/CSA
- Dimensions
- Front panel 17-1/2 in (44.5 cm) W x 7-1/16 in (17.9 cm) H; 20 in (50.8 cm) D behind the mounting panel, including connector clearance; 3/4 in (1.9 cm) clearance needed in front of the mounting panel
- Weight
- 40 lbs
- Approximate age
- 1998
- In the box
- Amplifier and captive power cord