Audio Asylum Thread Printer

Get a view of an entire thread on one page

FAQ / News / Events

OTL Asylum

Oh my...I suppose replacing V3 with a better tube will improve the sound, but I sure wouldn't...

70.162.169.147

jeffreybehr

In Reply to: RE: In the M60 3.3, the cathode follower, V4, is the single in front. posted by ozzyboy on March 28, 2017 at 09:52:55

...use any kind of socket extenders, just find a pair of standard-size RCA or Ken-Rad VT-231s (or TSRPs!) for that position.
Where (rotationally) are you running your preamp's volume control? If it's sort of low and you're 'throwing away' 10 or 20dB of the preamp's Voltage gain, do as I did and buy a pair of Ralph's tube-replacement plugs and replace Vs3 and turn your volume control up 10dB.

----------
Tin-eared audiofool, large-scale-Classical music lover, and damned-amateur fotografer.
William Bruce Cameron: "...not everything that can be counted counts, and not everything that counts can be counted."

Edits: 12/08/17

Follow Ups:

RE: Oh my...I suppose replacing V3 with a better tube will improve the sound, but I sure wouldn't... - ozzyboy 15:14:42 03/29/17 (1)
With the socket saver there will be enough room to place 3 of the Sophia's across the back row in the M-60's.
I do have many 1950's era RCA's and they do sound good. But, I think the Sophia's add a little more air, dynamics, and increase the soundstage.
- RE: Oh my...I suppose replacing V3 with a better tube will improve the sound, but I sure wouldn't... - Lew 07:25:44 03/30/17 (0)
  I don't know what is inside that CV181-like glass envelope that Sophia uses. If it's a 6SN7 internally, then using them is fine. On the other hand, if it's truly built to CV181 specifications, then keep in mind that the filaments draw 0.95A. That's 50% more current than a 6SN7 filament. If you use 3 or 4 of the Sophia tubes in an M60, it might be stressing the filament supply. Probably using one or two is OK. This issue would be in addition to any issue arising from alteration of the operating points of the tube itself, if it's a CV181.

Post a Followup:

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.

This post is made possible by the generous support of people like you and our sponsors:

Atma-Sphere Music Systems, Inc.