Audio Project Amplifier Speaker Loudspeaker Kit
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Tubes - Showing threads 8801 to 9000 of 11696 available
2A3 SET Output Transformer opinions/recommendations09-27-2004 06:19 AM - 24 replies
My 6C45 DC 6C41, advice wanted09-27-2004 03:17 AM - 20 replies
DIY valve09-26-2004 11:17 PM - 16 replies
A good SE project?09-26-2004 10:59 PM - 8 replies
who will build me this special "line tubeamp"09-26-2004 12:55 PM - 2 replies
PI filters09-26-2004 04:16 AM - 3 replies
Designing a simple dc filament supply?09-26-2004 02:43 AM - 5 replies
Rogers Cadett amp09-26-2004 01:29 AM - 1 reply
HI & a few words/questions ...09-25-2004 08:54 PM - 4 replies
6d22s09-25-2004 12:07 PM - 4 replies
eBay09-25-2004 04:19 AM - 2 replies
Chassis layout for Stereo JE Labs 300BDX09-25-2004 03:00 AM - 10 replies
Output transformer help09-24-2004 01:39 PM - 0 replies
CAD Program for Tubes09-24-2004 11:02 AM - 6 replies
801A/816 tubes wanted09-24-2004 12:06 AM - 1 reply
This little thing might save your life!09-23-2004 07:19 AM - 6 replies
What happens if I loose the cathode bias?09-23-2004 06:53 AM - 4 replies
beginners ecl82 power supply09-23-2004 05:48 AM - 15 replies
2MHz, High voltage source?09-22-2004 02:47 PM - 21 replies
beginner's ecl8209-22-2004 07:32 AM - 28 replies
Handmade Electronics Metal Punches?09-22-2004 02:54 AM - 0 replies
EL34 types09-21-2004 10:16 PM - 2 replies
Spice Model 6CW409-21-2004 04:19 PM - 6 replies
El/pl 51909-21-2004 11:15 AM - 3 replies
Euridice symetric to Amp?09-21-2004 05:50 AM - 0 replies
use of 6dj8 as driver on a direct coupled 2a3 se amp09-21-2004 03:10 AM - 2 replies
Western Electric 275A Schematic09-21-2004 02:29 AM - 0 replies
Where to source 833 power tube09-21-2004 01:32 AM - 19 replies
capacitor reactance09-20-2004 12:29 PM - 3 replies
Overvoltaging resistors09-20-2004 06:18 AM - 38 replies
EL84 Push Pull amp.09-19-2004 10:23 AM - 8 replies
Power supply load capacity09-19-2004 02:07 AM - 2 replies
Tube preamp problem09-18-2004 12:05 PM - 20 replies
E88C (6DL4/ 8255), any circuit for it?09-18-2004 10:36 AM - 3 replies
Is there a name for this drive method?09-17-2004 10:06 PM - 5 replies
6BM8 Question09-17-2004 08:02 PM - 10 replies
Tube mic preamp/mixer09-17-2004 07:04 PM - 31 replies
Please cast your votes..or make a suggestion or 209-17-2004 06:56 PM - 19 replies
RIAA in LTspice09-17-2004 02:47 PM - 2 replies
Parallel ECC82 comment please09-17-2004 02:41 PM - 8 replies
A push-pull amp i can live with09-16-2004 10:15 PM - 6 replies
Sub-miniature russian amp help09-16-2004 04:56 PM - 0 replies
Tube Optical-Isolation Unit09-16-2004 04:24 PM - 5 replies
MKP in the Powersupply.09-16-2004 03:34 PM - 42 replies
6SN7-GTB Globe (Chinese)09-15-2004 11:22 PM - 6 replies
12BH7 Specs09-15-2004 07:13 PM - 2 replies
Is this worth my time?09-15-2004 06:51 PM - 11 replies
choke value09-15-2004 10:28 AM - 8 replies
ipod + tubes09-15-2004 06:45 AM - 0 replies
Leak tl/25+ OPT selection09-15-2004 03:18 AM - 12 replies
Gabevee's Maggie (MAG1515)09-14-2004 05:12 PM - 2 replies
Can partial feedback be as effective as global fb for decent damping factor?09-14-2004 07:55 AM - 43 replies
Which trans wire is which?09-14-2004 03:12 AM - 18 replies
What's wrong with this tube?09-13-2004 11:45 PM - 11 replies
F: great sound control with ECC8209-13-2004 10:05 PM - 0 replies
30W UL 6L6P-P amp09-13-2004 08:49 PM - 50 replies
300B stereo SE amp and PP2A3 monoblocks09-12-2004 10:06 PM - 27 replies
6S45P matching09-12-2004 05:22 PM - 7 replies
Inductors made for crossover in an amp?09-12-2004 12:43 PM - 13 replies
PX4 or AVO44 or AV044 based SETA09-11-2004 08:51 PM - 1 reply
power conditioning09-11-2004 07:46 AM - 39 replies
Microphone preamp with compressor09-11-2004 04:04 AM - 24 replies
Current production rectifiers09-10-2004 01:43 AM - 6 replies
mu stage help...09-09-2004 04:29 PM - 4 replies
Non-Polar caps to cathode bypass09-09-2004 06:11 AM - 4 replies
5u4 / solid state switchable supply09-09-2004 04:44 AM - 1 reply
12AX7 sound ... going with the trend09-09-2004 03:35 AM - 24 replies
6L6 PP Design Recommendations?09-08-2004 11:20 PM - 13 replies
EL 34 30W ultra linear09-08-2004 10:34 AM - 70 replies
Convert Audion Silver Knight PP monos09-08-2004 07:45 AM - 6 replies
Too much gain09-08-2004 05:23 AM - 21 replies
The long lost linear gain stage09-08-2004 03:36 AM - 43 replies
Philco power tranny diagram/5u4 supply09-07-2004 11:08 PM - 0 replies
Kt88 Se09-07-2004 04:06 PM - 9 replies
supersize me, please. (powersupply)09-07-2004 07:04 AM - 5 replies
Seeking advice on "Circlotron" cross-coupled feedback OTL design09-06-2004 03:06 AM - 2 replies
Best 6CA7?09-04-2004 08:18 PM - 4 replies
ECC99 line preamp09-04-2004 01:07 AM - 38 replies
coupling caps???09-03-2004 03:16 PM - 14 replies
variable regulated negitive grid supply09-03-2004 12:32 PM - 6 replies
hum loop advice09-03-2004 11:46 AM - 4 replies
Against all odds...09-03-2004 11:28 AM - 6 replies
6as7 se amp09-02-2004 06:09 PM - 4 replies
Help .. tube amplifier .. 1st !09-02-2004 06:09 PM - 10 replies
winding a toroidal pp output09-02-2004 06:33 AM - 21 replies
solid state Vs Tube Rectification09-02-2004 05:50 AM - 3 replies
Cryoed Tubes...what To Expect?09-01-2004 10:06 PM - 10 replies
I'm looking for 6H13C tubes09-01-2004 09:53 PM - 2 replies
Which ST-70 ?09-01-2004 03:01 PM - 21 replies
Some questions about Van Scoyoc X-coupled splitter09-01-2004 12:12 PM - 2 replies
Quicksilver 8417 bias runaway?09-01-2004 07:16 AM - 37 replies
Most effective use of valve pre & active xover08-31-2004 07:10 PM - 8 replies
Tube possibilities for 2.9k-ohm speaker?08-31-2004 02:09 PM - 5 replies
Help on Preamp Mute Switch08-31-2004 11:41 AM - 6 replies
Fixed bias supply problems...08-31-2004 10:08 AM - 3 replies
Help with VTL preamp...08-31-2004 08:16 AM - 5 replies
question about 811A and 572B08-31-2004 01:02 AM - 3 replies
Dual Stereo Cathode Folower Setup08-30-2004 06:19 PM - 17 replies
tube tester08-30-2004 04:44 PM - 11 replies
Audio Innovation 1000 SE08-30-2004 02:27 PM - 15 replies
6as7 PP Schematic Help08-30-2004 01:02 AM - 1 reply
Newbie Question: Need help diagnosing a problem, tubes on, music fades out quickly08-28-2004 11:56 PM - 4 replies
7591EH failure08-28-2004 06:14 PM - 10 replies
opt frequency response08-28-2004 03:50 PM - 3 replies
Anyone got any opinions on this?08-28-2004 08:38 AM - 44 replies
My ForePlay Processor Controlled Preamp08-28-2004 03:25 AM - 34 replies
Tube ghetto blaster ?08-28-2004 12:58 AM - 9 replies
Help trouble shooting08-27-2004 11:07 PM - 11 replies
"The Fisher" tube amp 7189 output tubes08-27-2004 08:36 PM - 4 replies
UTC output transformers specs08-27-2004 03:59 PM - 2 replies
Regulation options for 807 g208-27-2004 11:03 AM - 13 replies
My Mullard 5/2008-27-2004 03:31 AM - 25 replies
Anyone tried Black Beauty caps??08-27-2004 12:00 AM - 9 replies
KT88 power amp08-26-2004 06:38 PM - 16 replies
High voltage regulator08-26-2004 07:46 AM - 45 replies
Filament voltage ?08-26-2004 04:40 AM - 13 replies
Unity Gain Unbalanced to Balanced Phase Splitter08-26-2004 03:42 AM - 10 replies
Anyone know the g1-g2 capacitance of 6AU6?08-25-2004 02:35 AM - 10 replies
Any good Transformer or Tube manufactureres in India ?08-24-2004 08:14 PM - 1 reply
McMartin MA-20?08-24-2004 05:28 PM - 14 replies
Help with Jolida 302A08-24-2004 01:32 PM - 4 replies
need 13fd7 curves08-23-2004 02:30 PM - 5 replies
Drd Kt88?08-23-2004 12:25 PM - 13 replies
miniature tube amp08-23-2004 06:45 AM - 6 replies
300B pp schematic found, what about it?08-21-2004 10:25 PM - 24 replies
Tube Output Stage08-21-2004 09:48 PM - 3 replies
se otl08-21-2004 07:27 PM - 7 replies
Toroidals as OPTs?08-21-2004 10:48 AM - 21 replies
Tube advice08-20-2004 09:44 PM - 3 replies
Understanding OPT primary Z and load matching.08-20-2004 07:38 PM - 4 replies
help with Optomal placement of output transformers.08-20-2004 03:25 PM - 5 replies
50h B2608-20-2004 06:58 AM - 3 replies
Anyone know what this is?? Strange tube/ bulb.08-18-2004 01:27 AM - 16 replies
Please ID output transformer08-17-2004 01:31 PM - 3 replies
Cheap and Easy Tube Phono Preamp08-16-2004 11:48 PM - 50 replies
Carbon film vs metal film resistors in a stepped attenuator?08-16-2004 07:45 PM - 17 replies
Alps pots vs. TKD pots? TKD worth the extra$$?08-16-2004 01:11 PM - 11 replies
Opamp as tube driver: Protection ideas?08-16-2004 12:31 PM - 5 replies
Looking for schematics CROFT OTL APPARITION08-16-2004 09:24 AM - 4 replies
ISO (new Tango) info...08-14-2004 04:45 PM - 0 replies
Noob Question on Driver Stages08-14-2004 02:08 PM - 2 replies
High Voltage Reference08-14-2004 12:24 AM - 9 replies
DIY valve amp08-13-2004 10:34 PM - 3 replies
JJ multisection caps08-13-2004 09:19 PM - 1 reply
Inverted Interstage Transformer08-13-2004 04:22 PM - 0 replies
regarding to the design of iron-cored inductors (chokes)08-13-2004 07:30 AM - 3 replies
Trying to find an amp08-13-2004 05:03 AM - 1 reply
12v tube output stage for cs43122 based dac?08-13-2004 02:43 AM - 10 replies
Wattages & Loudness: ?I'm Lost?08-12-2004 02:51 PM - 7 replies
cmrr of common cathode08-12-2004 08:43 AM - 14 replies
The Next Step. (and budget tube amplifier kits/designs).08-11-2004 08:56 PM - 15 replies
non-diy amplifiers with choke input power supplies08-11-2004 07:47 AM - 3 replies
Does a cathode bypass capacitor reduce hum?08-10-2004 05:39 AM - 23 replies
a tube convert tries a mosfet08-10-2004 04:26 AM - 15 replies
Motorboating in leak 2008-09-2004 11:29 PM - 5 replies
New MC preamp is comming alive08-09-2004 12:05 PM - 32 replies
HV tubes08-09-2004 09:50 AM - 87 replies
power supply pspice simulation problem08-09-2004 08:46 AM - 9 replies
Can a tube rectifier handle a C dual LC?08-09-2004 12:32 AM - 11 replies
Valve schematic & PC board design08-08-2004 08:30 PM - 2 replies
Just acqired some strange tubes.........08-08-2004 04:07 AM - 2 replies
Sovtek 6L6WXT08-07-2004 04:54 AM - 1 reply
RCA tubes, need info08-06-2004 07:48 PM - 4 replies
help on headphone amplifier08-06-2004 07:07 PM - 3 replies
Stromberg Carlson 245M08-06-2004 12:04 PM - 6 replies
mounting tubes upside-down08-06-2004 11:07 AM - 18 replies
6922 acting strange........or is it ?08-06-2004 02:50 AM - 18 replies
Fender Champ: What Transformers?08-05-2004 11:35 PM - 2 replies
Naive CCS quesion08-05-2004 08:55 PM - 5 replies
DIY scrap tubebuffer with ECC8808-05-2004 07:12 PM - 12 replies
choke current rating08-05-2004 05:03 PM - 17 replies
Velleman K801008-05-2004 03:25 PM - 1 reply
film vs. electrolytic08-05-2004 11:00 AM - 9 replies
Tube mic preamp for speaker measurements08-05-2004 08:48 AM - 2 replies
833a plate resistance ?08-05-2004 01:36 AM - 8 replies
second harmonic distortion08-05-2004 12:03 AM - 5 replies
Speakers not connected on tube amp, good or bad?08-04-2004 10:02 AM - 16 replies
different psu filter topologies ?08-03-2004 08:31 PM - 4 replies
Does anyone know this english amp ?08-03-2004 05:21 PM - 12 replies
kt88 power amplifier08-03-2004 12:31 PM - 7 replies
physical layout of 6B4G PP amp?08-02-2004 11:14 PM - 20 replies
Tube Life08-02-2004 07:59 PM - 14 replies
PSUD2 designer accuracy?08-02-2004 08:12 AM - 33 replies
Need advice on old 6bq5 amp...........08-02-2004 08:09 AM - 27 replies
rca83 rectifier precautions08-02-2004 02:39 AM - 4 replies
Multi chassis grounding scheme.08-01-2004 10:52 PM - 6 replies
717a Datasheet08-01-2004 02:15 AM - 7 replies
12B4 Battery Bias from (Preamp: Foreplay or 5687 or 12B4 )07-31-2004 06:17 PM - 3 replies
Need Six-pac amp schematic07-31-2004 05:23 PM - 1 reply
Any clue of how to use this part as a current sink for a CF?07-31-2004 01:29 PM - 36 replies
Tweeks on tubes - bring out the demagnetiserss07-31-2004 07:19 AM - 36 replies
Absolute. Best. Chassis. Ever.07-29-2004 05:58 PM - 23 replies
Zout adapted for 2 EL34 80W Va=560V07-29-2004 04:37 PM - 2 replies
load line - truth or fiction07-29-2004 03:34 AM - 4 replies
Best place to place bleeder resistor in a power supply?07-29-2004 01:13 AM - 13 replies
Pretty Tubes07-28-2004 06:59 PM - 4 replies
Preamp: Foreplay or 5687 or 12B407-28-2004 04:17 PM - 24 replies
want to make otl with 6 tung-sol 6336a07-28-2004 04:02 PM - 9 replies
6L6'S vs EL34's07-28-2004 10:26 AM - 8 replies
Creating a headphone amp out of existing 2A3 amp07-28-2004 05:32 AM - 9 replies

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