Audio Database

The

McIntosh MC300 a price point -- unknown (around the 1995 time)

Description
 
Stereo power amplifier which can supply the large current which maintains the continuous power of 300W+300W to a 2/4/8ohm load intensity, and exceeds 85A at a peek with an original output transformer.

Common mode noise and a distortion are reduced by the balance circuit of a whole page complimentary to the level which cannot almost be measured.

If distortion exceeds the amount of conventions, multi-protections, such as a sentry monitor which monitors continuously the thermal cutoff of the turn-on delay at the time of power activation including the power guarding system on which gain is dropped automatically, or an auto-return type, and the output current, are carried.

The gilding output terminal which can respond also to a very-thick speaker cable is adopted.

The right-and-left independency and the strange continuous input level control volume are carried in the rear panel.
Moreover, the it1 position is established in 2.5V which carries out a best match with the control center of a mac.

Both the balance input and the imbalanced input are supported.

The using as high power monophonic power amplifier by a balance operation and bridge operation is possible.

The blue-eyes power meter is carried. In this meter, the actual output power which is a product of an Output voltage and an electric-current value is indicated by an operation. Furthermore, compared with business-use VU meter, it has about 10 times as high-speed responsibilities, and the power of amplifier of operation can be grasped correctly.
Moreover, a peek hold window is possible by the switchpoint change of the front panel.

The power control in / out termination which makes possible power-source gang control with other mac components are carried.

Rear
Internal

Rating of a mode
Form Power amplifier
Output power (20Hz - 20kHz, succession sine wave) stereo: 300W+300W (2ohm, 4ohm, 8ohm)
mono bridge: 600W (4ohm, 8ohm, 16ohm)
mono parallel: 600W (1ohm, 2ohm, 4ohm)
Output load impedance stereo: 2 ohms, 4ohm, 8ohm
mono bridge: 4 ohms, 8ohm, 16ohm
mono parallel: 1 ohm, 2ohm, 4ohm
Output-power bandwidth 20Hz - 20kHz
THD (at the time of both channel operation 20Hz - 20kHz) A maximum of 0.005% (250mW-300W)
Cross modulation distortion
(at the time of bothchannel operation 20Hz - 20kHz)
A maximum of 0.005% (250mW-300W)
Frequency characteristic 20Hz-20kHz+0 -0.25 dB
10Hz-100kHz+0 -3 dB
SN ratio (A-standard) 105dB (below an Output power)
Dumping factor 40 or more
Input impedance 20kohm
Input sensitivity 1.4V (full)-2.5V (it1 position)-0
Power guarding Non clipping, THD<2% (1kHz >= 14dB)
Power source 100V, 50Hz/60 Hz, 0.6-12A (Underwriters Laboratories/CSA specification)
Dimensions (a knob, a termination included) Width 445x height 179x depth of 480mm
187mm (leg included) in height
Weight 35.8kg