Identifying an AKAI amplifier

Feb 05, 2009 4 Replies

Hi all. I need to identify an old AKAI power audio amplifier, bought in 1974 in Japan. It hasn't got any indication of model or power on the back panel, only Akai Electric Industries and i've lost the front badge which may have contained the model type.



I need the schematics because some electrolytic capacitors are missing, because i tried to repair it a few years ago but without any schematics so i've lost the capacitors' positions.



thanx! you can also write me at email - snipped-for-privacy@email.it



ciao

You've given us absolutely nothing to help you with. How about a description of the unit, a list of knobs on the front panel? Better yet, a picture of the front and back of the unit would be most helpful. Post it to alt.binaries.pictures.radio. Without that, you're asking us to be clairvoyant.

Dave M MasonDG44 at comcast dot net (Just substitute the appropriate characters in the address) Life is like a roll of toilet paper; the closer it gets to the end, the faster it goes.

Questions about consumer gear (finished goods) are more apt for a group *specific* to that genre.

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As Dave said, something more than a bare-nothing description is required. Uploading a photograph to an image hosting site then posting a link to that would be the *smart* way to approach this.

This is the least-encumbered of that bunch: (Run by the same folks as The Pirate Bay.)

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http://www.akai.com/contact.asp JF

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The front panel is made of aluminium and it has got 8 knobs + two for the microphones.

The first from left is the bass regulation, the second treble, the third volume, then balance, mode (L-Mono R-Mono Stereo L+Rmono) and last the input selector (a knob,of course)

In the lower part there is the on\off switch, headphones 6mm input, speaker selector knob, and 6 switches (filter, loudness, mute, tape) and two 6mm female jacks for microphones)

There isn't a main board inside it because it's made of little PCBs with no indications on them.

The model number label used to stay in the left front, but now there are only the two holes...

So this amplifier hasn't got a name, i don't really know how i can explain it better. Tomorrow i'll take a photo (not now because my mobile phone's camera has a really poor quality especially when the light is really low)

The power transistors inside it are two couples of NPNs and PNPs, with Japanese sigles (2x 2SC1403 and 2x 2SA745) mounted on a really big heatsink, however not visible from outside.

If someone has a link where i can find some Akai old amplifiers' schematics please let me know.

Thanks everyone.

ciao

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