修復・収集・記録HUNTINGTON BEACH · CALIFORNIA, U.S.A.
ヒャクボルト日本のオーディオと時計COLLECTED / RESTORED / DOCUMENTED
US MARKET / 米国仕様100V1960s — 1980s
Pioneer / QX-8000 / 1970s

Pioneer QX-8000 AM/FM Receiver. 1972. Very early Quadraphonic unit. Front/Rear amp. Essentially a double, bridged amp.

Pioneer QX-8000 AM/FM Receiver. 1972. Very early Quadraphonic unit. Front/Rear amp. Essentially a double, bridged amp.

Pioneer QX-8000 restoration photograph 1

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Pioneer QX-8000 restoration photograph 2

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Pioneer QX-8000 restoration photograph 3

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Pioneer QX-8000 restoration photograph 4

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Pioneer QX-8000 restoration photograph 5

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Pioneer QX-8000 restoration photograph 6

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Pioneer QX-8000 restoration photograph 7

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Pioneer QX-8000 restoration photograph 8

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Pioneer QX-8000 restoration photograph 9

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Pioneer QX-8000 restoration photograph 10

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Pioneer QX-8000 restoration photograph 11

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Pioneer QX-8000 restoration photograph 12

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Pioneer QX-8000 restoration photograph 13

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Pioneer QX-8000 restoration photograph 14

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Pioneer QX-8000 restoration photograph 15

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Pioneer QX-8000 restoration photograph 16

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Pioneer QX-8000 restoration photograph 17

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Pioneer QX-8000 restoration photograph 18

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Pioneer QX-8000 restoration photograph 19

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Pioneer QX-8000 restoration photograph 20

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Restoration notes

Restoration work completed in 2021. Cleaned. Replaced all capacitors (including filter capacitors) and problematic transistors. Pulled and new thermal grease on output transistors x 8. Balanced amplifier/Set Bias. Cleaned all controls. Replaced all lamps with low-power warm white LEDs. Rated at 25 watts per channel x 4.