Audio Project Amplifier Speaker Loudspeaker Kit
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Tubes - Showing threads 7801 to 8000 of 11696 available
different measurements04-17-2005 04:18 PM - 4 replies
DIY Dyna MK 2's and using bottlehead C4S04-17-2005 01:49 PM - 7 replies
Elektor ECL86 RIAA Preamp04-17-2005 12:01 PM - 20 replies
ECC88 - upgrading from Teonex - Help ?04-16-2005 11:13 PM - 14 replies
B+ problem?04-16-2005 09:23 PM - 17 replies
Realistic SAF 24c - Need some help04-16-2005 01:40 AM - 30 replies
what is the cap04-15-2005 10:06 PM - 13 replies
EAR 509 Mkii manual04-15-2005 07:55 PM - 0 replies
Where do you draw the line between tube and sand?04-15-2005 05:02 PM - 43 replies
Shinrock transformers04-15-2005 01:24 PM - 3 replies
OT: Anybody having problems getting to AA ? nt04-15-2005 12:54 AM - 3 replies
how much above B+ will voltage swing in OPT?04-14-2005 09:34 PM - 2 replies
bias meter and pot lead length04-14-2005 01:51 PM - 2 replies
211 biasing voltages preferances04-14-2005 06:27 AM - 3 replies
Definitely NOT a Loftin-White!!04-13-2005 10:29 PM - 7 replies
Tube Headphone Amp Troubleshooting Help04-13-2005 09:30 PM - 14 replies
Val MP 211 info wanted04-13-2005 09:59 AM - 11 replies
Look for EL33 PP structure circuit04-13-2005 09:50 AM - 14 replies
Rodding Bogen CHB-10A Mono Blocks04-12-2005 05:59 PM - 16 replies
two value tube amps for active DIY horns04-12-2005 01:42 PM - 19 replies
GEC 912+04-12-2005 09:45 AM - 9 replies
soon available as wrist watch.....04-12-2005 09:02 AM - 5 replies
Low sensitivity speakers and valvs, no nfb?04-12-2005 08:15 AM - 10 replies
Has anyone built this amp?04-12-2005 06:49 AM - 8 replies
Difference bewteen ultralinear & triode mode?04-12-2005 01:37 AM - 10 replies
7586 nuvistor04-11-2005 09:10 PM - 15 replies
Valve Identification-Help04-11-2005 07:20 PM - 21 replies
KT 88 schematic search04-11-2005 12:20 PM - 6 replies
Bias the new power tube04-11-2005 06:40 AM - 2 replies
6M6G Structure of the circuit04-10-2005 07:24 PM - 2 replies
I Think I Saw Heaven !04-10-2005 07:12 PM - 2 replies
Tron Syren04-10-2005 04:04 PM - 2 replies
extremely low output04-10-2005 12:21 PM - 10 replies
project suggestion with spare trans04-10-2005 08:10 AM - 6 replies
cinema amps04-10-2005 07:10 AM - 35 replies
c3g producing sparks04-10-2005 01:32 AM - 2 replies
Where to get transformer parts?04-09-2005 05:28 PM - 7 replies
penta labs04-09-2005 04:29 PM - 0 replies
Dynaco ST70 clone04-09-2005 12:26 PM - 8 replies
anyone tried the diy paradise simple el84 pp04-08-2005 07:11 PM - 6 replies
compression?04-08-2005 04:11 PM - 17 replies
100V trannies as valve OPT04-08-2005 03:32 PM - 0 replies
6bm8 / Ecl82 Pse & Srpp04-08-2005 07:11 AM - 4 replies
Lowther LL26 restoration04-08-2005 03:01 AM - 1 reply
Can I trust my Valve Tester04-08-2005 12:03 AM - 1 reply
(RCA) 6SN7 GTC spec?04-07-2005 08:12 PM - 6 replies
re: need help on Counterpoint SA5.1 preamp04-07-2005 05:15 PM - 5 replies
Why no CCS in PP output stage?04-07-2005 05:01 PM - 11 replies
811-A amp04-07-2005 04:00 PM - 71 replies
DYNACO 120W AMP for DYNA A-45104-07-2005 01:43 PM - 16 replies
35watts el34 amp schematic search ?04-07-2005 11:51 AM - 3 replies
tube04-07-2005 08:32 AM - 4 replies
My first design. PSE 211 to review.04-06-2005 11:41 PM - 43 replies
new 832 tubes?04-06-2005 08:52 PM - 6 replies
How to test a tube04-06-2005 06:01 PM - 8 replies
50V line trafos for tube O/P?04-06-2005 01:30 PM - 1 reply
Distortion analysis mu follower04-06-2005 12:53 PM - 12 replies
the general radio experimenter04-05-2005 03:54 PM - 3 replies
resistor value, please04-05-2005 10:56 AM - 8 replies
PL519 PP design04-04-2005 07:52 PM - 42 replies
Dealers for output irons in EU wanted04-04-2005 02:14 PM - 19 replies
Any Twin Power triode Noval type?04-04-2005 01:29 PM - 8 replies
ARC SP9 Preamp voltages04-03-2005 03:54 PM - 8 replies
Power transformer04-03-2005 02:08 PM - 4 replies
OTL for Raven R204-03-2005 11:57 AM - 4 replies
passive preamp (autoformer)04-03-2005 06:12 AM - 26 replies
How fragile are Sylvania 10Y tubes?04-03-2005 12:35 AM - 8 replies
SE 6SN7/813 direct coupling04-02-2005 09:24 PM - 5 replies
Riken Ohm Vs Kiwame04-02-2005 10:06 AM - 3 replies
Advantage of Valve Preamp?04-01-2005 10:36 AM - 7 replies
SiC Schottky rectifiers.03-31-2005 11:54 PM - 14 replies
30 W from 6c33b?03-31-2005 03:49 PM - 5 replies
Built-in bleeder in ASC?03-31-2005 01:37 PM - 2 replies
833 and GU-4803-31-2005 12:58 PM - 1 reply
Safety with high volts: 10103-31-2005 11:20 AM - 34 replies
Kofi Annan in: "B+... PLUS!!!"03-31-2005 01:00 AM - 143 replies
searching for darling tubes.03-30-2005 10:58 PM - 11 replies
Audio Research LS8 scheme03-30-2005 10:33 PM - 0 replies
My new pp KT88 design03-30-2005 09:21 PM - 41 replies
Tubepreamp and Zappulse?03-30-2005 06:16 PM - 3 replies
Comments on Transcendent Sound products03-30-2005 12:25 PM - 4 replies
regaring 833se03-30-2005 09:22 AM - 4 replies
Asc Oil Capacitors03-30-2005 04:44 AM - 5 replies
Buy Tubes03-30-2005 02:41 AM - 0 replies
Placement of power amp imput resistor03-30-2005 01:45 AM - 6 replies
Brimar EL3403-29-2005 11:34 PM - 4 replies
Elekit TU-87003-29-2005 02:42 PM - 1 reply
Tube amplifier mods03-29-2005 09:57 AM - 12 replies
Stromberg-Carlson project03-29-2005 07:32 AM - 49 replies
How to design the straight load line for choke loaded tube ?03-29-2005 03:03 AM - 14 replies
OPT failure modes03-29-2005 02:45 AM - 3 replies
Life of tubes - what to expect?03-29-2005 01:42 AM - 12 replies
Profiteering from Gordan Rankin Designs03-29-2005 12:41 AM - 4 replies
Gain/Schematic Question03-28-2005 08:47 PM - 2 replies
Heath Distortion Measurement Set HD-103-28-2005 07:44 PM - 0 replies
Tube troubleshooting question03-28-2005 06:52 PM - 1 reply
Speaker tube amp with headphones03-28-2005 06:34 PM - 6 replies
mj headphone amp03-28-2005 06:10 PM - 10 replies
Gain of 6AK503-28-2005 03:38 PM - 8 replies
R vs. RC on secondaries03-28-2005 10:57 AM - 7 replies
My simple 5010 amplifiers03-28-2005 12:17 AM - 5 replies
constant current sources...03-27-2005 07:58 PM - 10 replies
Critical resistors03-27-2005 09:51 AM - 5 replies
Digital tube designs?03-27-2005 09:14 AM - 2 replies
2A3 SE Amp03-26-2005 11:43 PM - 4 replies
Dact closeout03-26-2005 11:14 PM - 0 replies
Mysterious runaway output tube03-26-2005 01:11 PM - 8 replies
Ampex 351 Power Transformer03-26-2005 04:21 AM - 1 reply
better the Pass camp?03-25-2005 02:18 PM - 6 replies
My first tube amp kit.03-25-2005 09:42 AM - 2 replies
Plate Resistor03-24-2005 10:41 PM - 4 replies
EZ81 tube rectifier03-24-2005 07:50 PM - 13 replies
4K:10K interstage03-24-2005 04:34 PM - 0 replies
DIY in New York City03-24-2005 12:08 PM - 2 replies
can I tone control the Peavey Classic 60/6003-24-2005 03:32 AM - 2 replies
dead project, new life?03-24-2005 02:32 AM - 4 replies
Guitar overdriven preamp schematics?03-24-2005 02:17 AM - 4 replies
Interesting Read On 300B's03-24-2005 12:31 AM - 7 replies
Low voltage tubes03-23-2005 04:55 PM - 4 replies
Perser SA20 Restoration03-23-2005 03:02 PM - 11 replies
IP headroom with LTP splitter03-23-2005 02:33 AM - 8 replies
Triode strapping 6l6gc PP03-23-2005 02:15 AM - 5 replies
Question on design03-23-2005 12:43 AM - 10 replies
Peavey Classic 60/60 bias mod advice03-23-2005 12:30 AM - 5 replies
pin outs on Hammond tube amp?03-22-2005 08:40 PM - 0 replies
cathode follower03-22-2005 04:42 PM - 6 replies
Positive feedback online issue #1603-22-2005 11:25 AM - 0 replies
el84 help03-22-2005 10:54 AM - 14 replies
RIAA help03-22-2005 02:29 AM - 4 replies
Advise for my first tube amplifier, please03-22-2005 01:25 AM - 7 replies
My 50/10Y amp with hybrid PSU... am I doing the standby switch right?03-22-2005 12:18 AM - 6 replies
What can I build with this iron?03-22-2005 12:00 AM - 7 replies
Hey Planet_10 (and others)03-21-2005 10:44 PM - 45 replies
Tube sockets for Harmon-K Citation II03-21-2005 01:30 PM - 4 replies
Seeking a source for Mundorf M-caps.03-21-2005 04:47 AM - 2 replies
Question on ZZ-1000/822803-21-2005 02:00 AM - 0 replies
noise analysis03-21-2005 12:03 AM - 5 replies
Using latching signal relay in SE guitar amp.03-20-2005 08:49 PM - 3 replies
Help wanted with fixing french DRG valve preamp....03-20-2005 08:15 PM - 0 replies
How hot are they supposed to get?03-20-2005 06:49 PM - 2 replies
EF86 Triode Mode03-20-2005 04:05 PM - 4 replies
Using a 6SL7 in a tube overdrive pedal instead of 12AX7?03-20-2005 03:34 PM - 5 replies
Guitar Amp Question!!!!! Adding Film Cap?03-20-2005 01:06 PM - 11 replies
naive questions03-20-2005 10:03 AM - 3 replies
Rozenblits Grounded grid preamp layout03-19-2005 11:17 PM - 15 replies
Help extend the life of my 805's03-19-2005 09:33 PM - 5 replies
Difference between 5687, 5687WA and 5687WB tubes?03-19-2005 04:35 PM - 23 replies
The first tube "integrated circuit" (1926)03-19-2005 12:44 PM - 3 replies
Fix loose connection in base with solder pot?03-19-2005 06:49 AM - 2 replies
91a 300b conversion to 2a303-18-2005 11:33 PM - 8 replies
Adams Amp Discussion, please help! :)03-18-2005 08:12 PM - 30 replies
Had a bad accident with my TT21 today.03-18-2005 05:39 PM - 14 replies
Different sound for CD Tube Player03-18-2005 04:54 PM - 3 replies
Tube audio transformer03-18-2005 04:47 PM - 19 replies
Hybrid Srpp03-18-2005 08:34 AM - 17 replies
"it is just SO hard to get bad sound from EL84 PP amp"03-18-2005 05:03 AM - 34 replies
Wire types??03-17-2005 10:56 PM - 5 replies
triode vs. pentode for pp output.03-17-2005 07:17 PM - 1 reply
6GK5 vs. EC95/6ER503-17-2005 04:14 PM - 1 reply
25BQ6GTB?? Any Good?03-17-2005 04:12 PM - 5 replies
do pp output tubes have to be matched?03-16-2005 09:15 PM - 12 replies
Ampex 600 pre03-16-2005 08:49 PM - 0 replies
line-stage preamp tubes? which ones to use...03-16-2005 07:17 PM - 12 replies
Another timekiller project03-16-2005 03:14 PM - 13 replies
6sn7GT03-16-2005 01:59 PM - 11 replies
problem with EL84 PP amp03-16-2005 08:56 AM - 1 reply
a speaker whose load varies too much for an OTL03-16-2005 01:32 AM - 5 replies
Mystery manufacturer/distributor03-16-2005 01:06 AM - 3 replies
37s Anyone?03-15-2005 11:59 PM - 0 replies
sv811-10 push pull03-15-2005 05:29 PM - 0 replies
416B dangerous tube?03-15-2005 03:37 PM - 8 replies
blew my amp because of distortion pedal03-15-2005 02:39 PM - 3 replies
Help with Tube Phono Output Impedance03-15-2005 03:24 AM - 2 replies
Minimum current for choke operation03-15-2005 01:16 AM - 7 replies
stored energy in output transformer?03-15-2005 12:54 AM - 4 replies
socket mounting depth03-14-2005 10:48 PM - 10 replies
Parafeeding a push pull03-14-2005 06:51 PM - 3 replies
Different direct heating styles?03-14-2005 01:42 PM - 7 replies
The most simple tube preamp03-14-2005 06:54 AM - 19 replies
Sample/hold DC servo circuit03-14-2005 05:41 AM - 7 replies
Interstage transformer as OPT?03-14-2005 05:17 AM - 10 replies
What can you do with cheap 1kV power?03-14-2005 04:42 AM - 11 replies
Marshall Super Lead MkII03-13-2005 03:28 PM - 5 replies
Flashing Rectifier Tube- Bad Thing?03-12-2005 11:30 PM - 46 replies
Amp for my speakers, PLEASE Help03-12-2005 10:30 PM - 3 replies
suitable preamp for a tube amp (kt88+12ax7)03-12-2005 10:08 PM - 6 replies
anyone know of a kit to make tube night light?03-12-2005 07:34 PM - 7 replies
Sprague capasitor id03-12-2005 07:30 PM - 7 replies
Question on Tango XE-20S03-12-2005 03:16 PM - 7 replies
6SL7 diff pair - how to set up????03-12-2005 11:15 AM - 24 replies
Hwat should be the best driver for a 520V2 ?03-12-2005 10:53 AM - 3 replies
problem: half power on push-pull ?03-11-2005 11:23 PM - 5 replies
Screen voltage - standby cut (Roland Bolt 60)03-11-2005 09:12 PM - 4 replies
Triode Dick/FdeGrove 2A3 PP amplifier03-11-2005 07:07 PM - 23 replies
PSU for perusal03-11-2005 05:49 PM - 6 replies
Kt66 Gec Replica03-11-2005 10:04 AM - 12 replies
6as703-11-2005 06:27 AM - 2 replies
Please confirm my transformer math.03-10-2005 11:52 PM - 7 replies
Anything wrong with this design?03-10-2005 09:00 PM - 4 replies
Buffer Line Pre-Amp Power Tx03-10-2005 04:56 PM - 0 replies

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