Metropoulos Forum

tchamps99 · Post by **tchamps99** » Tue Jan 15, 2008 8:03 pm

I had a tech install a master volume and remove the bright cap@c5 my surprise when i open the amp because it still sounds harsh to find that he removed the cap @c6 can anyone tell me what it was and what it did

Billy Batz · Post by **Billy Batz** » Tue Jan 15, 2008 9:04 pm

By my SLP schematic C6 should reduce brigtness but it also reduces gain. Its the cathode bypass cap Ck on V2a. If you asked to snip C5 its very different mod but a somewhat similar result. Its a very common mod to reduce brightness but it is different and not what you asked for. Just clipping C5 isnt really making a huge difference either though. It will reduce the brightness by a degree, sure, but your just reducing the bypass cap on the bright mixer from 590p to 470p. By my schematic for a 1959 SLP anyway.

tchamps99 · Post by **tchamps99** » Thu Jan 17, 2008 10:27 am

thanks dan i took out the c5 cap and there was some improvement but im still looking for that creamy tone. I'm going to install the metro amp replacement board and some nos tubes. however i had a master volume installed and don't know how to wire the mv into the new board any ideas? thanks

Billy Batz · Post by **Billy Batz** » Thu Jan 17, 2008 3:55 pm

I could describe it or make a layout but SDM made some great layouts already including the preferred PPIVMV. Ill email them to you. Email me from the link below my sig.