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SOHA II Builders Thread - Page 63

post #931 of 1686
Quote:
Originally Posted by tacitapproval View Post
Everything needed for the build (parts, case, torroid, pair of 5963s) except solder and wire.
Great. I am not really into the case though I would rather build a custom one.
I appreicate your informaiton.
post #932 of 1686
Anyone here try 6N2P tubes in the SOHA II? When I put mine in, I can only barely turn up the volume and then the amp cuts out? Any ideas?
post #933 of 1686
Actually it is the E12 relay cutting in and out, it appears that when I try to turn up the volume DC Offset must be getting too high, need to match the tubes maybe?
post #934 of 1686
More readings...it seems that the DC offset jumps past 100mA as soon as I try to adjust the volume, it settles back down again after a few seconds. Since I'm new to all this I'm interesting in hearing some ideas on how to solve this.
post #935 of 1686
Quote:
Originally Posted by ROBSCIX View Post
Great. I am not really into the case though I would rather build a custom one.
I appreicate your informaiton.
He sends a pricelist of options. You can omit anything you don't want.
post #936 of 1686
Quote:
Originally Posted by jjazzyj View Post
Anyone here try 6N2P tubes in the SOHA II? When I put mine in, I can only barely turn up the volume and then the amp cuts out? Any ideas?


6n2p are similar to 12ax7. I believe these are too much gain for this configuration. Do you have any tubes known to work with this circuit?
post #937 of 1686
Thread Starter 
jjazzyj, tacitapproval is correct. If those particular tubes are similar to 12ax7 they will not work for you. If you can get something closer to the 12au7 the e12 should settle down.
Dr. Cavalli gained notoriety with his first DIY amplifier projects. His success has blossomed into Cavalli Audio, a world leader in amplifier design.
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post #938 of 1686
Been reading this thread as well. Tubes known to be compatible apart from 12AU7s are:

12AT7
E88CC
5963
6DJ8
6922
8416
post #939 of 1686
I'd been doing some research about the 6n2p and yeah, there's too much gain. They don't sound that great in the SOHA II when they're working anyway. I like the little bit of extra bass they have compared to the GE 5963, but the rest of the soundstage is muffled and dead. I don't mind the 5963 that came with my kit. Just wanted to try the 6n2p out.
post #940 of 1686
Thread Starter 
I think 8416 will give you more bass. At least mine do.
Dr. Cavalli gained notoriety with his first DIY amplifier projects. His success has blossomed into Cavalli Audio, a world leader in amplifier design.
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post #941 of 1686
I have been in Contact with Jeff, guess he is a busy guy. Anyway, I appreciate those who gave me help and informaiton. Will post ics when I get started building.
post #942 of 1686
Quote:
Originally Posted by jjazzyj View Post
I'd been doing some research about the 6n2p and yeah, there's too much gain. They don't sound that great in the SOHA II when they're working anyway. I like the little bit of extra bass they have compared to the GE 5963, but the rest of the soundstage is muffled and dead. I don't mind the 5963 that came with my kit. Just wanted to try the 6n2p out.
You could also try Amperex Holland orange globe 6DJ8. More bass than my 5963 and Sylvania 12AU7.
post #943 of 1686
I find the 6DJ8, 6922, 8416 thicker sounding.
post #944 of 1686
Can I ask, what tubes are compatible with the SohaII design, since everybody is talking baout rolling tubes?
post #945 of 1686
Have you read the ~10 posts before your post?
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