1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Vintage Hi-Fi, Stereo and Audio

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x


Linear Mode
EL34 PP amp build X2 - here I go again! (was 6L6GC)
MrFixr55
Super Moderator
******
Posts: 2,327
Threads: 23
Joined: Jul 2020
City: Greenlawn State, Province, Country: NY
#14

09-18-2025, 12:26 PM
Nice job, TV man. @ Morzh, exactly right. Have a Heathkit W6M. They did the exact same thing, put 2 caps in series because the B+ on this monster (2 6550s) was somewhere around 480V (Theoreticaly because voltages were not listed. However, the AC input to the B+ full wave voltage doubler circuit was 170V RMS. Multiply that by 2, then multiply by 1.414 and the peak DC voltage was 480V. They used 300V caps, but Heath started by buying a few trainloads of government surplus parts. This is why the A7 general purpose amp had 12V tubes .
"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55
Find
« Next Oldest | Next Newest »


Messages In This Thread
RE: Another amp build - here I go again! - by MrFixr55 - 09-18-2025, 12:26 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 45-6365 Universal IFT Instruction Manual
Dale: Modified topic as suggested. It is not for a specific project. I found it in a box of stuff I recently purchased...GRG — 10:34 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
That looks a lot like an aircraft connector of some kind ... That is a MIL-5015 style connector, used in a wide v...DaleHCook — 10:19 AM
Philco P45-6365 Universal Transformer Instruction Manual
I would suggest changing the topic from "P45-6365 Universal Transformer" to "45-6365 Universal IFT."...DaleHCook — 10:08 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated. By dconant. Dittos'Jimradio — 08:01 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
That looks a lot like an aircraft connector of some kind, even if it's a U.S.N power supply. I have a book somewhere abo...Arran — 02:56 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
hello david, I have a similar generator in my collection that features a cast iron, single-cylinder Briggs & Stratt...radiorich — 01:00 AM
under chassis parts locator diagram for 1938 Zenith 9s262
Has anyone gone to the trouble of creating an under chassis parts locator image?  Yes, I can identify components by foll...bobloney — 08:57 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Try looking at this site the book mark is for a old generator that I was given. David    https://radionerds.com/index.ph...David — 08:36 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Hello Everyone, I am looking for voltage identification for all the pin positions on the socket of a CRV-20130 power su...Tonym4704 — 08:16 PM
Philco 45-6365 Universal IFT Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM

[-]
Who's Online
There are currently 1986 online users. [Complete List]
» 3 Member(s) | 1983 Guest(s)
AvatarAvatarAvatar

>
  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Vintage Hi-Fi, Stereo and Audio