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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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In Reply to: This looks like the place to be for Sherwood owners posted by Bamboo Pentagon on April 19, 2015 at 18:28:18:
I'm uploading the schematic.
If you are willing to loose the loudness function, buy a hot molded PEC KKA control from DigiKey. Otherwise, try to run down a Noble conductive plastic control, which does have a loudness tap. Carbon sounds better than plastic, unless you buy the OUTRAGEOUSLY expensive P&G stuff.
Time and again, I find myself making the same recommendation for units from this time frame. Tape head I/Ps are passe, in this day and age. Switches in mV. level signal lines are a prescription for trouble. Replace the source selector switch with an approx. $5 Lorlin part from Mouser. Hard wire a pair of I/P jacks to the low level mag. preamp section, which is permanently configured for RIAA. The O/P of the phono section is just another line level source. All the other I/P jacks should be set up for line level signals.
If you plan on recording L/Ps to tape or some sort of digitized version, you really need to go over the low level mag. preamp section. Unfortunately, 12AX7s are wimps that can't drive downstream loads.
BTW, the primitive integrated circuits containing only passive parts, known as PECs, and used in signal shaping circuitry SUCK. Replace them with modern, high precision, discrete, parts.
Oh yeah, the "routine" safety warnings about "death cap." removal and a 3 wire power cable apply.
Eli D.
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Follow Ups
- RE: This looks like the place to be for Sherwood owners - Eli Duttman 19:26:10 04/19/15 (19)
- Mikey Replaced My Cord With A 2 Prong..... - geezerrocket 11:12:38 04/21/15 (5)
- RE: Mikey Replaced My Cord With A 2 Prong..... - Michael Samra 19:31:36 04/21/15 (4)
- Polarized Plug - Eli Duttman 19:41:55 04/22/15 (1)
- I am not going there agian! (nt) - Crazy Dave 10:11:58 04/23/15 (0)
- RE: Mikey Replaced My Cord With A 2 Prong..... - geezerrocket 14:04:36 04/22/15 (0)
- RE: Mikey Replaced My Cord With A 2 Prong..... - Eli Duttman 07:49:18 04/22/15 (0)
- Caught twixt & tween - Uncle Mike 15:59:49 04/20/15 (0)
- RE: This looks like the place to be for Sherwood owners - Bamboo Pentagon 19:34:08 04/19/15 (11)
- RE: This looks like the place to be for Sherwood owners - Uncle Mike 06:26:11 04/20/15 (9)
- RE: This looks like the place to be for Sherwood owners - Bamboo Pentagon 11:06:44 04/20/15 (8)
- RE: This looks like the place to be for Sherwood owners - Michael Samra 19:04:36 04/20/15 (7)
- RE: This looks like the place to be for Sherwood owners - Bamboo Pentagon 19:09:12 04/20/15 (6)
- RE: This looks like the place to be for Sherwood owners - Brian Levy 22:18:57 04/20/15 (3)
- RE: This looks like the place to be for Sherwood owners - Bamboo Pentagon 04:54:40 04/21/15 (0)
- RE: This looks like the place to be for Sherwood owners - Michael Samra 00:21:34 04/21/15 (1)
- RE: This looks like the place to be for Sherwood owners - Crazy Dave 06:46:13 04/21/15 (0)
- Here is better picture of it. - Michael Samra 19:16:25 04/20/15 (1)
- RE: Here is better picture of it. - Bamboo Pentagon 19:22:12 04/20/15 (0)
- RE: This looks like the place to be for Sherwood owners - Eli Duttman 19:53:33 04/19/15 (0)
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