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MC7150
Commentary

This is a stereo power amplifier developed by inheriting the MC2600 technology.

An output transformer is used to keep the operating temperature of the amplifier low, to improve stability, and to protect the amplifier from overloads.
In addition, materials and structures are carefully examined to improve various characteristics such as strain rate.

A symmetric circuit developed in MC2600 is used for the amplifier circuit after the pre-drive stage.
In order to fully realize the advantages of this circuit, which is basically free from noise and distortion, we strictly select and use elements with the same characteristics.
The final stage connected to the output transformer uses three parallel metal can-type high-reliability transistors with a total of 12 left and right channels.

In the protection circuit, the power guard system with the clipping output, the power guard system with an indicator operates to automatically reduce the gain, and a current limiter circuit is installed.

The input sensitivity can be adjusted freely with the left and right independent continuous variable level control.
In addition, 2.5 v is input at the center click point.

There was a wood cabinet in the picture as an option sold separately.

Model Rating
Type Stereo power amplifier
Output Stereo : 150W + 150W (Sine Wave Continuous Output, Load Impedance 2/4/8 Ω)
Output impedance Stereo : 2 Ω, 4 Ω, 8 Ω
Output frequency band 20 Hz to 20 kHz
Total harmonic distortion factor Stereo : 0.005% or Less (20 Hz to 20 kHz, 250 mW to 150W, when both channels are driven)
Intermodulation distortion factor (20 Hz to 20 kHz) Stereo : 0.005% or less (peak 300W or less per one channel, when both channels are driven)
Frequency Band (at 1W output) 20 Hz to 20 kHz, + 0 -0.25 dB
10 Hz to 100 kHz, + 0 -3.0 dB
Signal-to-noise ratio 105 dB or less (at rated output, A-weighted)
Dynamic headroom 1.8dB(IHF)
Damping factor 40 or more
Input impedance 20k Ω (unbalanced)
Input sensitivity Input VR Center Click : 2.5 v
Input VR Full : 1.4 V
Power Guard Overdrive at 1 kHz up to 14 dB THD within 2%
Pwer 100 VAC, 50Hz/60Hz, 0.5A ~ 7A
External dimensions Width 410x Height 145x Depth 416 mm (including terminal)
Weight 26.3kg
Remarks Sold Separately : Wood Cabinet R52