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アンプ DYNACO ST-70のPDF インストールとユーザーマニュアルをオンラインで閲覧またはダウンロードできます。DYNACO ST-70 9 ページ。 Driver 6gh8 ecf82 for the ab-q-st70 auto bias module
DYNACO ST-70 にも：組立マニュアル (14 ページ)

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1. 1MOhm potentiometers must be connected to inputs 7 and 17 of the PC-3 driver. If these

potentiometers are not present on the amp, 1MOhm resistors (R2 and R15) must be connected

to ground at inputs 7 and 17. If this does not happen, the PC-3 driver will fail and the signal will

have significant distortion!

2. The AB-Q ST-70 module is already preset to a cathode current tubes EL34 of 38 mA. There is no

need to set it again.

If you want to set a different cathode current on the EL34, follow these steps: