tube

Oh no another W5M restoration! I had a pair sitting on the bench with a whole pile of expensive tubes and replacements parts sitting next to them for about a year of so. I thought it would be wise to learn how tube amplification works before tearing into these amps. I was originally thinking...

Hi All, I've just purchased a near mint A-R SP-14 preamp, with original boxes, and manual. Pristine. I would be very happy, but, I can't get a sound out of the phono stage. There's one 6922 tube in the stage, which lights up when powered up. The line stage works fine, btw. MM cart into the...

Have thought about using tube guards in a build but always wondered how you would switched the tubes out? Would you have to flip the amp and remove the nut then pull the guard off, swap tubes and put guard back on? Or is there enough room to get a grip on the tube and wiggle it out of the socket?

Hi folks. I've seen a few threads about these NOBSOUND amps. I've got the kit, the parts look pretty quality, not high end, but should be good enough for me. I've got a technology club and a couple of students and I are going to put this together. I've taught them to read and follow a wiring...

Thinking of going the "tube" way.I currently have a Sansui AU717 and sounds fine with a pair of Hereseys on top of a pair of Quartets,but i have heard so much how tube amps bring Klipsch "alive" i wanted to give it a try.Is there something out there that has a couple of inputs for my TT and R...

Hoping everyone can help me out with this one, so I'm trying to decide on a speaker to build for a 2A3 or 300b tube amp. I haven't decided on which set to build yet because the full range is a 90 db and the mid bass with horn driver would be 99db. I'm just trying to see if anyone prefers horn...

So far I've replaced nearly all the capacitors in this tuner, but I need help replacing the last remaining can cap, replacing the selenium rectifier and testing it to see if the other parts work fine. Does anyone know of someone in the DC/Virginia/Maryland area that can help out? Thanks!

I hate passing up a good deal. Except sometimes good deals don't always turnout to be good deals when all is said and done. I have an opportunity to buy both pieces for 350 total. They supposedly work but will need some TLC. Should I go for it? Fisher 500B by HairySatchel posted Mar 4, 2018 at...

Anyone ever heard of or seen a Fishr 900 B? google did not show much :(

Hello, Another post seeking help wiring a nondescript Dynaco tube board from Ebay. This one is a Dynaco 6v6 ultra linear circuit. I have the power supply issue under control, but I'm looking for advice on how to properly wire the output transformers to the board. I've read that the OPT for...

Hello all, I'm wondering if anyone can give some advice on how to wire this Dynaco Pas-3 phono board (this is from ebay / labeled as the PC-6A and seller is not responsive). I have limited experience building simple tube kits, but I can't find a wiring diagram for this particular board, and...

I have now around 200 HRS on the "Harry Gates Memorial" amp. Have been running a set of Sovtek 6550,s, today changed to Tung-Sol type 3 6550. These are all marked Raytheon Adjusting bias to each tube to 50mA. Hope to listen to this tonight after work. If I cannot tell any difference I will put...

If anyone has a schematic for a 2a3 amp that they have built and it sounds great please let me know, I've been looking to build a nice one of these and have searched the web but didn't find much. Thank you.

Not know what they sound like, I wanted to give tube audio a try. I looked up tube equipment on eBay and they seemed to run thousands of dollars per piece. Is that about what they cost? Seems pretty costly to try tube audio. Is it even worth it or should I stick with modern equipment. Thanks

I have already posted this in the General Audio thread, but I figured I'd repost it here as well. I'm in the process of restoring a Fisher TFM-300 tuner. It's been advised that I replace the selenium rectifier in the unit but I've never replaced one before. I bought this full-wave bridge...

Hello all, I'm trying to replace the selenium rectifier in a Fisher TFM-300 tuner. I bought an 8 amp 400V full wave bridge rectifier as a replacement. Would this be a drop-in replacement or would I have to solder in additional resistors? Thanks for the help! Here's the schematic...

Hi, I"m working on restoring a The Fisher 500 mono tube receiver and there are a few bulbs in the front panel that look like fuses that are not working. Does anyone know where to find replacement bulbs? and It's also missing a knob, any leads? thanks!

Cornet3 vs Budgie Good day everybody! Both of them (click the link above) are true tube phono preamps under 500$, they have all good reviews and reputation too. Anybody has listened to them? Is there any reason while you should choose one over the other when using MM cartridge? Thank You for...

My Scott 399c looks ugly as hell in nude. I have seen them transform in a elegant beauty when paired with original wood case. So I am always on the look out for original wood cabinet for my 399 for a while now. As part of my auction site ritual, I was checking for wood case for my 399c and I saw...

Hello All, I am hoping someone here can help me identify some tubes that I came across while cleaning out an old warehouse. The box they are in says "GE Electronic Tubes", though they are individually boxed in white boxes labeled 718116. When you open the individual tubes there is no reference...

Is there anyone in the So Cal area that can mod the Yaqin MS-23B?

It seems there are lots of vintage threads but not a whole lot of modern ones so I thought this would be a good place to share your personal or favourite amps from 2010 and on. Here is my new amp which is a real beauty! By far the best amp I've ever owned with quality craftsmanship and a warm...

Hello all! Let me say thanks to anyone who responds in advance! So let me start by saying that I know squat about electronics though I have started doing some reading. My only hands-on electronic experience is putting together a kit or two from radio shack when I was a kid. Now that we've...

Hi, I am very tempted by the opportunity to buy a VPI 299D Integrated Amplifier; I have read the reviews and read some discussions about why VPI made them, etc, but I have not find a detailed review from a current or past owner about the sound quality, if it is really worth the investment or if...

Hello All, I am going to come into possession of a Harman-Kardon "Award Series" FA-3000X stereo tuner amplifier soon. I have some questions regarding this component, and I would really appreciate it if somebody could answer them for me. The first question is: How many watts per channel was the...