Kent A-160

[g1]

Schematic anyone? Thanks!

[Bloomfield]

I realize this thread is ancient, but last night I just found one I drew years ago and I was thinking I should offer it up to anyone interested.

I don't have a scanner working, but if anyone wants it I'll try to sort something out.

Andy

[J M Fahey]

Please do.
Absolute worst case, tape/tack ends to some cork/styrofoam board so it stands flat, prop it vertical on a table by a window or a well illuminated spot, put camera firmly on a stack of books pointing at the center of schematic, about center height and at distance enough (a foot or more) so schematic *just* fills picture and said picture will be quite close in quality to a proper scanning.
Avoid flash so you donīt have a white burnt spot in the middle of picture or even better cover it with a couple thicknesses paper napkin so it *just* provides some fill in flash.
Results can be stumming: even, sharp and readable..

[Bloomfield]

I was thinking that should work. I'm really busy this week but I'll try to get a good photo and put it up soon.

Andy

[Bloomfield]

[Bloomfield]

Sorry that's so dark. I could try again now that I've sort of figured out how to attach an image. Digital things, I'll admit, are not my thing.

A few things seem weird about that schematic, but as far as I know it's correct 'as found.' The OT secondary is not right though, when I got it it was a little head made out of 1/4 plywood and cloth tape. I turned it into a 2 x 10 combo about 25 years ago. I'll have to check the original OT, I believe it has 8 and 16 ohm on the secondary. I have a Deluxe Reverb unit in there at the moment with different speakers. Sorry I don't have the pot values, but I'd imagine they are what you'd expect. The 68k as the input grid leak seems weird; I have had a 1M there for a long time so I can't verify if that was what was there.

It's a neat little amp; it says 'Made in Canada,' so possibly made by Pepco. I've seen Kent guitars which were all made in Japan by Teisco, and this did contain a lot of Japanese capacitors, but it doesn't appear to be a Teisco amp.

Andy

[The Dude]

"Tweaked"

[Bloomfield]

Thanks Dude.

[vintagekiki]

Lighted

[Steve77]

I know this thread is old, but Bloomfield, thank you thank you thank you!!!! I have been trying to find a schematic for this amp for ages and finally found yours. I have been trying to dig through this amp to create my own, but I’m for too much of an amateur to pull it off.
Thank you!!!

[Jazz P Bass]

What a professional looking drawing.
Nice work!

[Steve77]

I know this is a really old thread, but with that schematic I finally know the impedance of the two speaker jacks. Unfortunately the amp was never labeled.
I’ve been told I can measure the resistance of each tap and the higher of the two is the 16ohm.
Bloomfield, any chance your still around and remember which speaker jacks is which?

[Bloomfield]

Hi Steve, I got that transformer out and took a bunch of readings. The first thing I discovered was that the primaries are colour-coded wrong- or differently to be charitable- on mine at least, the brown wire is the centre tap, and blue and red are the plate leads. Putting in a 1000 Hz signal and going through the calculations, black to green seems to be the 8 ohm secondary at 7104 ohm primary impedance, and black to white at 16 ohms gives 7248 ohm primary which is well within the range expected for a pair of EL84. Hopefully that tells you what you need to know, if not PM me and I can show the rest of the numbers.

Happy New Year,
Andy

[Steve77]

Andy that was perfect thanks a bunch. Luckily I was using an 8ohm speaker in the right speaker jacks, but that was just luck