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Post by Bainzy on Oct 27, 2005 20:29:23 GMT
just fitted this tonight, it was just the thing to make my amp sound GREAT at bedroom volumes, as opposed to GOOD with the PPIMV.  |
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Post by pongo316 on Sept 19, 2006 0:31:41 GMT
What Pins are the green wires connected to ? If I have 1/2 power Switch will this still work (as long as i change the Ohms on back of amp from 16 to 8ohms) For even lower volumes  ? |
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Post by Bainzy on Oct 3, 2006 13:35:30 GMT
The pentode/triode switch won't affect the operation of your normal half power switch in any way - just continue using that as normal.
The green wires are connected to the leads of each pair of 1k 5w screen grid resistors that are tied together.
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Post by pongo316 on Oct 20, 2006 8:21:01 GMT
Q / do I disconect the original wires (yelloish colour) in the picture & only leave the last tube conected to the choke.
What switch can i use (i have a mini DPDT rated 2a 250mv) is that big enough for this ?
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Post by oberheimhaven on Oct 20, 2006 22:39:24 GMT
just fitted this tonight, it was just the thing to make my amp sound GREAT at bedroom volumes, as opposed to GOOD with the PPIMV. Hey mate do you know how to take out the buzz fuzz in thre preamp peavey 6505+ someone told me add resis to grid thought maybe you might have some insight and could lend me a hand? I would sincerely appreciate the help!!! |
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Post by Bainzy on Oct 21, 2006 13:39:55 GMT
Q / do I disconect the original wires (yelloish colour) in the picture & only leave the last tube conected to the choke. Don't mess with the original yellow wires or choke connection, you need the screen voltage supply on each tube otherwise they won't work. Just add that new yellow wire and connect it to the switch. I can't remember off the top of my head what the rating needed is so I'll have to get back to you on that. What I do know is that the mini toggle switches available from Metroamp.com aren't big enough for this. |
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Post by pongo316 on Oct 21, 2006 22:45:09 GMT
Q / do I disconnect the original wires (yellowish colour) in the picture & only leave the last tube connected to the choke. Don't mess with the original yellow wires or choke connection, you need the screen voltage supply on each tube otherwise they won't work. Just add that new yellow wire and connect it to the switch. I can't remember off the top of my head what the rating needed is so I'll have to get back to you on that. What I do know is that the mini toggle switches available from Metroamp.com aren't big enough for this. It might be the switch then As it does work for in normal mode DPDT switch is on /on Is this correct I'll go out and try and hunt down a larger DPDT switch (maybe the mini cannot handle it ) But confirmation of what kind of switch would be greatly appreciated. |
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Post by pongo316 on Oct 22, 2006 2:48:50 GMT
Worked it out.
I didn't lift the cement resistors from pin6.
but left them on conected to the tube socket
Does that mean that the tubes arnt protected ? Now
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