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2 Attachment(s) Grounded Grid?? Really? by Donut
Hello! My friend is working on his preamp and he shows me the circuit lately. The preamp named Grounded Grid and claimed that the circuit is GG as...
December 16th 14 10:28 AM
by Patrick Turner Go to last post
6 6,688
Second DIY (sort of) Amp by Peter Wieck
I was grubbing through my various parts-boxes the other day and found out that from various repairs and salvages, I had accumulated a complete set of Dynaco...
December 12th 14 05:38 PM
by Peter Wieck Go to last post
6 2,963
2 Attachment(s) Wide Range Wein Bridge Oscillator by John L Stewart
Go to this link- www.hparchive.com to see the HP 207A Wide Range Oscillator listed under the equipment heading. 20 Hz to 20 KHz in one twist of the dial....
(Multi-page thread 1 2)
October 29th 14 10:39 PM
by Holm Tiffe Go to last post
16 4,514
Anyone know what happened to Sound Valves amp manufacturer ? by Robert Meushaw
A while back I bought a pair of Sound Valves M60 monoblock amps. Before the purchase I checked out their web site and they seemed to make a number of quality...
October 16th 14 05:31 PM
by Viewoiiikio Go to last post
2 4,026
1 Attachment(s) How many tubes do I need? by [email protected]
I want to build a computer entirely out of tubes, and be able to download and store the entire internet on it. How many tubes do I need?
(Multi-page thread 1 2)
September 24th 14 10:29 PM
by Peter Wieck Go to last post
11 3,889
Life in the Last Lane by Alan Marcy
Hi RAT's, I am returning to some semblance of life, after my little touch of jet lag after my first/last international bidness trip to Buenos Aires, Argentina...
September 11th 14 10:17 AM
by Patrick Turner Go to last post
3 2,084
Empire Turntables by [email protected]
Awesome info, thank you! Never knew about the B52 connection. Please post photos and tutorials on your experience with the offboard mount for your pabst!
August 16th 14 01:37 AM
by [email protected] Go to last post
0 2,402
Triodelington by Patrick Turner
On Saturday, 9 August 2014 18:32:16 UTC+10, G.Re wrote: > Triodelington; a composite name the author made up for a triode-darlington.
August 15th 14 11:47 AM
by Patrick Turner Go to last post
0 2,393
1 Attachment(s) Ping: John Byrnes by John Stewart
Anything to report on your 'potato amp' project yet? Cheers, John Stewart
August 1st 14 02:01 AM
by John L Stewart Go to last post
7 2,780
Quad-II mods - again, oh no.... by Patrick Turner
A short note to all:- I was not completely happy with my old page on re-forming Quad-II amps for improved performance. So I have now re-edited all schematics...
(Multi-page thread 1 2)
July 24th 14 01:55 AM
by Patrick Turner Go to last post
13 4,380
What would make a Quad II oscillate? by [email protected]
Hi all, I posted before while I was fixing up a couple of Quad II amps. After working fine for a number of weeks, one of them just started oscillating like...
July 24th 14 01:16 AM
by Patrick Turner Go to last post
6 2,139
Baxandall tone control, still good? by [email protected]
Hi! What is the opinion nowadays on using the original tone control by Baxandall, as published Wireless World 1952? Is it still worth incorporating in a diy...
July 23rd 14 02:26 PM
by [email protected] Go to last post
6 2,690
Quad II question: High B+ a problem? by [email protected]
Hello all, long time lurker/sporadic poster here with a question concerning my current project. I recently rebuilt a couple of Quad II's from what was pretty...
(Multi-page thread 1 2)
July 19th 14 03:10 PM
by [email protected] Go to last post
17 3,126
10 Attachment(s) Sequel to Low Cost SET Amp for Newbies by John L Stewart
At 130 views & counting it seems like we need a follow on. So here it is with more power. This was originally published in the Glass Audio Projects Book, April...
(Multi-page thread 1 2)
July 17th 14 07:40 AM
by maxhifi Go to last post
10 6,373
1 Attachment(s) One for Pat ..... by Phil Allison[_3_]
** Hi all tube fans, please enjoy this U-tube made by a most famous British audio guru. Contains all you ever wanted to know about Quad's famous tube based...
July 13th 14 10:46 PM
by [email protected] Go to last post
8 2,742
NOS 6LW6s by [email protected]
Hi, I'd like to buy 6LW6 Vacuum tube 20~30 ea. Please make a purchase.
June 24th 14 02:02 AM
by [email protected] Go to last post
0 1,692
Dynaco MkIV monobloc re-engineering by Patrick Turner
I have very nearly finished re-engineering a pair of Dynaco MkIV monos. I've replaced PT for 240V mains, and used completely new schematic with 2 x 6CG7 and 2...
(Multi-page thread 1 2)
June 7th 14 08:14 AM
by Patrick Turner Go to last post
10 3,367
Re-edited page on Quad-II mods. by Patrick Turner
Hi all, I've just re-edited my page about reforming Quad-II amps. Much information about Quad-II OPTs, and 2 better drawn graphs for THD Vs...
June 7th 14 07:54 AM
by Patrick Turner Go to last post
0 1,516
WANTED: Jensen G610 by [email protected]
Il giorno luned́ 5 gennaio 1998 09:00:00 UTC+1, Tom Ronan ha scritto: > Looking for Jensen G610 speakers, a single or a pair. > > I'm willing to trade, or pay...
June 2nd 14 09:52 AM
by [email protected] Go to last post
0 1,549
Quad-II amp info and re-building by Patrick Turner
There is no doubt some ppl would never ever change one single thing in original Quad-II amplifiers. For those who loathe me saying old Quad-II have faults...
June 1st 14 03:43 PM
by Patrick Turner Go to last post
2 1,934
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