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Audio and Video Talk
The Vintage Audio Section
Quad 44 restore
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<blockquote data-quote="Sarel.wagner" data-source="post: 1127866" data-attributes="member: 25509"><p>And some progress again, was out for the day yesterday. Added new RCA's to the TT input as well, the old ones was corroded/tarnished.</p><p>Now to add the wiring and a new hole to the radio board to rout them wires. Then change the inputs for lesser sensitivity. Managed to get the correct schematics for my revision boards, so now to calc the new values for the Opamp and inputs and do the mods.</p><p></p><p>Re those red switched, the on position of these are opposite of the originals. Will have to print a new legend to go in the window, the original is MIA anyhow. Also the switches are not ganged for stereo like the originals.... And the lower noise Opamps will happen next year when they arrive. I may have to tweak the power supply to add some current as the new ones use more. I do not know how much headroom the power supply have to cater for that, will see.</p><p></p><p>[ATTACH=full]20191[/ATTACH]</p><p></p><p>Groetnis</p></blockquote><p></p>
[QUOTE="Sarel.wagner, post: 1127866, member: 25509"] And some progress again, was out for the day yesterday. Added new RCA's to the TT input as well, the old ones was corroded/tarnished. Now to add the wiring and a new hole to the radio board to rout them wires. Then change the inputs for lesser sensitivity. Managed to get the correct schematics for my revision boards, so now to calc the new values for the Opamp and inputs and do the mods. Re those red switched, the on position of these are opposite of the originals. Will have to print a new legend to go in the window, the original is MIA anyhow. Also the switches are not ganged for stereo like the originals.... And the lower noise Opamps will happen next year when they arrive. I may have to tweak the power supply to add some current as the new ones use more. I do not know how much headroom the power supply have to cater for that, will see. [ATTACH type="full"]20191[/ATTACH] Groetnis [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
Quad 44 restore
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