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Pioneer QX-949A

AM/FM Four Channel Stereo Receiver (1976-77)

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Pioneer QX-949A


The Pioneer QX-949A is a 40 watt, four channel, stereo receiver.

Features include a CD-4 demodulator, SQ decoder, regular matrix decoder, four channel level indicator, power boosting circuit, high and low cut filters and two tape monitor switches.


Tuning range: FM, MW

Power output: 60W/ch (stereo), 40W/ch into 8Ω (quadraphonic)

Frequency response: 7Hz to 25kHz

Total harmonic distortion: 0.3%

Damping factor: 35

Input sensitivity: 2.5mV (MM), 150mV (line)

Signal to noise ratio: 70dB (MM), 90dB (line)

Output: 150mV (line)

Speaker load impedance: 4Ω (minimum)

Semiconductors: 12 x FET, 11 x IC, 85 x transistors, 63 x diodes

Dimensions: 550 x 160 x 440mm

Weight: 22.4kg

Accessories: FM T-type antenna, PQX-1014 CD-4 test record

Year: 1976


instruction/owners manual   English - Biro

service manual   English - Biro

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re: QX-949

On the bottom of the receiver, front right, is what looks like a POT. I have not been able to find its purpose in any manual. Does anyone have an idea what it is for?

re: QX-949

It's used to adjust the 30kHz carrier level. You have to have the Pioneer CD-4 test record that came with the 949. In the 949A carrier levels are done automatically.

workmeistr's picture

re: QX-949

CD-4 Carrier Level Control. Manipulation of this and the Separation Controls (not on 949A?) with the assistance of the CD-4 test record produces "clear sound localization."

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