4 Channel Power Amplifier (1972)
Used as the power unit incorporated into a professional four-channel stereo system, Pioneer's Model QM-800 has no peer for versatility and performance.
With a power bandwidth of 10 to 50,000Hz (at 8 ohms, four channels driven), and delivering 25 watts per channel of continuous power (at 8 ohms), this new unit is the key to turning your listening room into a concert hall of total, all-encompassing sound.
The QM-800 is recommended for use with the identically-sized and styled quadraphonic preamplifier, Pioneer Model QC-800.
And this new component may also be used in a two-channel two-way multi-amplifier system, in conjunction with an electronic crossover network, simply by connecting the high range speaker output terminals to the tweeter.
No matter how you size up the QM-800, it becomes the ultimate in four-channel sound: distortion is low, output power is stable, signal-to-noise ratio is 90dB or more.
Quadraphonic stereo now has the power to go with its exciting performance. The Pioneer QM-800: it deserves a listen, a four-channel listen, today.
Power output: 35 watts per channel into 8Ω (stereo), 25W (4 channel)
Frequency response: 5Hz to 80kHz
Total harmonic distortion: 0.5%
Damping factor: 70
Input sensitivity: 0.5V
Signal to noise ratio: 90dB
Speaker load impedance: 4Ω to 16Ω
Semiconductors: 39 x transistors, 37 x diodes
Dimensions: 430 x 145 x 337mm
If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.
If you have additional documentation please consider donating a copy to our free archive.