|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
69.142.46.247
In Reply to: RE: Rectifer Tube Choice for easy on the other components............. posted by Cut-Throat on April 01, 2021 at 16:53:19
Forward drop in 5Y3s is large. You may be hearing the reduction in B+ rail voltage.
If, as the schematic suggests, you're taking the "raw" B+ from pin 8 of the rectifier socket, try a Bendix/Red Bank 6106. It's a variation on the 5Y3 theme that is constructed with a cathode sleeve. Vacuum rectifiers with cathode sleeves exhibit slow B+ rail rise.
BTW, the original use for 6106s was in Nike SAM systems. Bendix/Red Bank is THE epitome of rugged and reliable.
Eli D.
Follow Ups:
Just to clarify... Are you saying that the 5Y3G Tube is putting more stress on my other components in the Amp than the 5U4G tube?
Edits: 04/02/21
It is a matter of how you describe 'stress'. The DH models like 5R4, 274, 5Y3 and 5U4 are all DH, and deliver voltage almost instantaneously. If this is an issue, then an IDH would be called for. If it is a matter of voltage output, then the higher resistance models like 5Y3 would be called for.
There is another IDH 5Y3-ish tube, type 6087.
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
PakProtector hello and agree with you. I remember asking the late Don Garber about using the Bendix 6087 in my Fi and he stated that he thought it was the finest for use in the 5Y3G section. Slow start-up and tough as nails.
A 5Y3 yields a "shorter" B+ rail than a 5U4. Good, bad, or indifferent will depend on the specific situation.
Eli D.
Thanks for your reply.... What exactly does a 'Shorter B+ rail' mean? -- And how is that different from what the 5u4G tube does?And I not talking about Sonics here. I am talking about Stress on the other Components such as the 45 Tube, and the Transformers etc.....
Edits: 04/02/21
The forward drop in 5Y3s is larger than that in 5U4s. Therefore, rectifying with a 5Y3 gets you fewer B+ volts than rectifying with a 5U4. What sort of an effect the "shorter" B+ rail has will be situation dependent.
Eli D.
Edits: 04/02/21
So, it won't hurt anything?
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: