6V6 Amp

Schematic: http://i263.photobucket.com/albums/ii151/cameramanlink/6V6Amp-1.gif
Homemade mono amplifier built from scratch. It uses a pair of 6V6 tubes in push pull. The chassis was recycled and that is why there are unused holes in the box. Sound recorded with a dynamic microphone connected to camcorder as shown in video. The stereo output of the CD player was combined to mono using the shown cable. Low hum audible before the song starts was caused by the stray field from the power transformer cutting across the dynamic microphone's moving coil.
http://www.freewebs.com/cameramanlink

Category:

Science & Technology

Tags:

• homemade
• tube
• amp
• mono
• 6V6
• push
• pull
• stereo
• hifi

[Thermionman1970]

Nice amp! I like the large octal tubes.I would like to hear the" Empire Strikes Back" soundtrack( John Williams)played through this amp into a huge 5 or 6 cubic foot ported speaker enclosure to really bring out the 20-30 HZ and played real loud! Or use two and get stereo!

[CameramanLink]

@Thermionman1970 Thanks! This amp has a long history. The chassis was for my first attempt at a stereo magnetic phono preamp that failed completely, but the amp was first built onto a WOODEN chassis using thin fiber board for mounting the tubes! A few years later and it turned into this. I have a stereo version of this amp as well. Huge ported speakers connected to this would be fun - big sound from a relatively low-power amp.

[caiserECEguy]

Very nice version of the 6V6 amp from the RCA tube manual. I've noticed that in this and some of your other projects, you've used what looks like some braided sleeving on some of the wiring. I've been looking for something like that. Where did you come by yours?

[CameramanLink]

@caiserECEguy This circuit was a mod of another that I got from a kit. The kit schematic was re-designed again by a vintage electronics dealer, and then I changed it again. I guess I got it pretty close to the RCA manual because I built this before I got the manual.

The braided wire is from tubesandmore[dot]com. Scroll to "Wire & Heat Shrink" on the left then go to "Lacquered Cotton Braid Wire."

[Fendervana]

Awesome, just awesome! Been thinking about doing something similar with my Scott 299D. I have a question, what mixer did you connection the SM57's into? And second, what was the mixer connected with for editing?

Thanks!

[CameramanLink]

@Fendervana Thanks! The SM57 was connected directly into the middle camcorder which recorded audio and video at the same time. The output (A/V) from the camcorder was recorded into a laptop and then edited in the editing program.

[codemsan]

@CameramanLink oh the font of the words "LO-Z" are usually that of chinese knockoffs, but if its legit hell more power to ya! and hey no problem man, ive been a long time fan of your videos!

[AllAmericanFiveRadio]

Nice amplifier and nicely built from scratch.

[CameramanLink]

@JPa311979 The capacitor, believe it or not, was one I bought used at an electronics store! It was still good when I bought it and it works to this day; no leakage. The tubes were in fact recycled from 2 broken Voice of Music reel-to-reel recorders. This is how I got the parts for the Cassette Player and Cassette Recorder (HD videos of these will follow shortly).

[CameramanLink]

@codemsan As far as I know it's the real thing. It came in a regular Shure box with sticker, paperwork, etc. Checkout the upcoming KT88 Amp--it really has a lot of power for the chassis size! Thanks for watching my new vids!