HH Scott LK72B Amplifier

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HH Scott LK72B Amplifier

rfeenstra
Phorum Expert

Posts: 1,189
Threads: 50
Joined: Oct 2017
City: Allendale, MI

#44

12-14-2019, 10:49 PM

Russ, the 6U8's are capacitor isolated from the 7591's so I doubt they would cause the red plate condition. Only one of the pair did it so I don't think it was bias. Probably screen. I put the original, very weak, Scott 7195's back in. Sounds good even though they are tired. Heat generated is relatively low. I have them biased so they are not working as hard as designed. Still, I need to install the 1/4 watt resistors I bought for the cathodes, and then re-bias the outputs.

(This post was last modified: 12-14-2019, 11:04 PM by rfeenstra.)

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Messages In This Thread

HH Scott LK72B Amplifier - by rfeenstra - 03-25-2018, 06:00 PM

RE: HH Scott LK72B Amplifier - by Phlogiston - 03-25-2018, 08:59 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 03-25-2018, 10:51 PM

RE: HH Scott LK72B Amplifier - by morzh - 03-25-2018, 11:27 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 03-31-2018, 11:18 PM

RE: HH Scott LK72B Amplifier - by morzh - 04-01-2018, 09:59 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 04-01-2018, 05:25 PM

RE: HH Scott LK72B Amplifier - by Electrothaumaturgist - 04-01-2018, 06:58 PM

RE: HH Scott LK72B Amplifier - by morzh - 04-01-2018, 09:04 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 04-05-2018, 08:55 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 04-05-2018, 10:20 PM

RE: HH Scott LK72B Amplifier - by Phlogiston - 04-06-2018, 11:16 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 04-06-2018, 01:20 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 04-07-2018, 03:23 PM

RE: HH Scott LK72B Amplifier - by codefox1 - 04-30-2018, 09:44 PM

RE: HH Scott LK72B Amplifier - by Phlogiston - 04-30-2018, 10:22 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-01-2018, 12:18 AM

RE: HH Scott LK72B Amplifier - by morzh - 05-01-2018, 11:51 AM

RE: HH Scott LK72B Amplifier - by Phlogiston - 05-01-2018, 12:23 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-01-2018, 04:51 PM

RE: HH Scott LK72B Amplifier - by Phlogiston - 05-01-2018, 10:34 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-02-2018, 12:06 AM

RE: HH Scott LK72B Amplifier - by morzh - 05-02-2018, 08:23 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-02-2018, 08:55 AM

RE: HH Scott LK72B Amplifier - by Ron Ramirez - 05-02-2018, 09:45 AM

RE: HH Scott LK72B Amplifier - by morzh - 05-02-2018, 09:47 AM

RE: HH Scott LK72B Amplifier - by Phlogiston - 05-02-2018, 10:38 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-02-2018, 06:10 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-19-2018, 11:32 PM

RE: HH Scott LK72B Amplifier - by Phlogiston - 05-20-2018, 11:00 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-20-2018, 12:58 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-20-2018, 01:19 PM

RE: HH Scott LK72B Amplifier - by morzh - 05-20-2018, 02:18 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-20-2018, 02:34 PM

RE: HH Scott LK72B Amplifier - by KCMike - 05-20-2018, 03:01 PM

RE: HH Scott LK72B Amplifier - by Phlogiston - 05-20-2018, 03:27 PM

RE: HH Scott LK72B Amplifier - by TV MAN - 05-22-2018, 07:54 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 05-22-2018, 09:08 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 12-14-2019, 01:05 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 12-14-2019, 01:12 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 12-14-2019, 01:58 AM

RE: HH Scott LK72B Amplifier - by Phlogiston - 12-14-2019, 09:20 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 12-14-2019, 09:33 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 12-14-2019, 10:49 PM

RE: HH Scott LK72B Amplifier - by Phlogiston - 12-14-2019, 11:17 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 12-14-2019, 11:47 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 04-23-2020, 11:32 PM

RE: HH Scott LK72B Amplifier - by PhilcoJohn - 04-26-2020, 05:57 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 04-26-2020, 11:36 PM

RE: HH Scott LK72B Amplifier - by morzh - 04-26-2020, 11:48 PM

RE: HH Scott LK72B Amplifier - by rfeenstra - 04-27-2020, 01:37 AM

RE: HH Scott LK72B Amplifier - by MrFixr55 - 08-14-2022, 08:04 AM

RE: HH Scott LK72B Amplifier - by RGK20m3 - 08-15-2022, 07:17 AM

RE: HH Scott LK72B Amplifier - by rfeenstra - 08-15-2022, 10:13 AM

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