Does anybody know what voltage feeds the preamplifier in the original Sugden A21. The power supply has been altered by a previous owner so I have to sort it out to get it working again after a rectifier failure.
How original its goes back a long way IE-1968 ?
Scroll down for spec.
Sugden A21 Series 2 amplifier | Hi-Fi News
Scroll down for spec.
Sugden A21 Series 2 amplifier | Hi-Fi News
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That being the case MM=2.5mv. into 68Kohms ? SN 70db down
Radio/Tape/Aux/=150mv into 200Kohms--SN 80db down
Ceramic=50mv
FR=+/- 1db --- 30hz to 20Khz
Thats the ORIGINAL model in my link.
Radio/Tape/Aux/=150mv into 200Kohms--SN 80db down
Ceramic=50mv
FR=+/- 1db --- 30hz to 20Khz
Thats the ORIGINAL model in my link.
Thanks for posting but I can only see a Cyrillic written page which is probably telling I have no business being there 😀
Can´t you just post that image here, so it opens inside the answer itself?
Thanks.
Supplies to a preamplifier, if required, are taken from the 36 V rails and stabilised to 16 V with the Zener
diode. The zener diode also has in parallel a 1,000 uF capacitor to provide additional ripple smoothing.
https://sound-au.com/tcaas/sugden10w.gif
diode. The zener diode also has in parallel a 1,000 uF capacitor to provide additional ripple smoothing.
https://sound-au.com/tcaas/sugden10w.gif