Eico Sine and Square Audio Wave Generator | eBay!. Audio Generator Equipment EICO Electronic Instrument Brooklyn, build , 11 pictures, 2 schematics, 5 tubes, United States of America. Used Eico Vacuum tubes for sale on + second hand hifi sites & shops. Use Hifi Shark to monitor pricing and global availability.

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Sep Tue 06, 3: I power it up slowly using a Variac on the ac line.

The op just reminded me I own a whole slew of those. Add to watch list.

It functioned perfectly last time I plugged it in 10 years ago. Unknown what you really got.

Audio Generator 377

The way I have it in the photos is the way that I tried it first, with the 6BQ5 in the “north” socket, which did produce a recognizable sine wave, though not very pretty.

Add to watch list Add eixo wish list. I removed it from the amp I built in one of these. Dec 28, 4.

Used Eico Vacuum tubes for Sale |

If it’s wired for a 6SQ7 the heater voltage will be between pins 7 and 8. Used it as a variable bright cap across the volume pot. The distortion was tested across a ohm load. I edited the original post to include the pics. Dec 28, 3.


This is an Ebay buy that I figured I would be replacing capacitors on, not trying to figure out what the thing even is!

Back to home page. Thanks for the info and the ideas. I also have an older version from I think the s using the older octal tubes.

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You simply have a newer version of the generator than the schematic that was posted on BAMA. The square wave performance is OK and seems to be optimal around Hz.

Antique Radio Forums • View topic – Eico or IS it?

Apparently it was purchased and never used. Chrome DinetteDec 28, This was probably a worthwhile mod but unfortunately 2 extra holes were eivo in the front panel. If the tubes were loose how did you decide which ones went where? Overall the HP is a much better oscillator but the Eico is definitely a usable piece of test equipment.


Sep Mon 05, 8: I get a signal on the scope, but not a clean one.

Eico 377 to 5c1 Champ conversion

The version arrived in like new condition except for white oxidation on the cadmium plated steel chassis and the factory tag still on the handle. This amount is subject to change until you eoco payment. The generator was capable of either sine or square wave outputs. Late model from Sep Tue 06, 8: Converted Eico signal generator into Fender Tweed Champ 5c1.

If it was an intentional change, the socket wiring will not match the schematic. The dial adjustment is broke on the inside and is visible in the picture.