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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Back to home page. Sometime in the past someone modified the generator to include a 20 dB voltage ratio step attenuator.

The 6FG7 replaces the 6SN7. If the socket is wired for a 6SJ7 it will appear between pin 2 and pin 7.

Sell one like this. We’ve added some “new” guys to the moderator crew. Sep Tue 06, 3: I removed it from the amp I built in one of these.

You must log in or sign up to reply here. Unknown what you really got.

Audio Generator 377

Thanks for the info and the ideas. Add to watch list Add to wish list. The soldering and construction is nice work. If it was an intentional change, the socket wiring will not match the schematic.


I have four other pieces of Eico equipment. I also have an older version from I think the s using the older octal tubes.

Eico Sine and Square Audio Wave Generator | eBay

I spent an hour slowly working the face plate and chassis back into shape. I replaced the now 45 year old 2 prong cord eixo I’m replacing the 8uF caps throughout the chassis.

When I opened it up, it was obvious this thing has taken a fall of major proportions. Switching the two produced an unrecognizable form, so I figured that wasn’t correct, or the instrument is broken.

Add to watch list. The generator worked without doing any repairs. The dial accuracy is OK but not great. Overall the HP is a much better oscillator but the Eico is definitely a usable piece of test equipment. Search Media New Media. Hopefully I will get it figured out. If the tubes were loose how did you decide which ones went where? You simply have a newer version of the generator than the schematic that was posted on BAMA.


Yes, my password is: The generator was capable 37 either sine or square wave outputs. Home Forums Recent Posts.

Eico 377 to 5c1 Champ conversion

Quick and simple project finished. I checked the sine wave output distortion using my HP Distortion Analyzer. Discussion in ‘ Amps and Cabs ‘ started by xtianDec 28, Sep Tue 06, The square wave performance is OK and seems to be optimal eivo Hz.

As for yours, I think I see a diode on the terminal strip that the transformer secondary winding leads all connect to, 377 the need for the rectifier tube. Aug Wed 30, 5: What in the heck did I buy?