AKAI aa-1150
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Binkman
Lunatic Member
Here ya go. you'll find a spec sheet too.
http://www.hifiengine.com/library/akai/aa-1050.shtml
http://www.hifiengine.com/library/akai/aa-1050.shtml
petehall347
the brandy coffee man
is here http://www.manual-de-servicio.com/e/action/ListInfo/index.php?page=306&classid=7&totalnum=2969
i can never manuals to download from here ..think its my settings ..you might have better luck
i can never manuals to download from here ..think its my settings ..you might have better luck
lot of manuals listed there, but I can't figure out how to download them either. :scratch2:
Rolf Zetterberg
Well-Known Member
The 1135 looks similar to the 1150.
http://akdatabase.org/AKview/albums/userpics/10004/Akai AA-1135L Schematic.pdf
http://akdatabase.org/AKview/albums/userpics/10004/Akai AA-1135L Schematic.pdf
The AA-1135 is very close to the AA-1150.
There are both in the same SM.
A kind AKer sent me a copy of the SM. Its a big one.
The only adjustment is the idle current
Connect a DMM across the emmiters on the output transistors and adjust the trimmers to get 25mv.
The trick is that the outputs are on the bottom (separate little board IIRC) and the trimmers up on top of the main amp board.
They have drawings. The ouptut connections shown are all BCE but I can't tell if I am seeing it from the top or bottom, so the actual transistors could be ECB
The board is AS-3502B and has the name AKAI on one end.
The emmiters are all on the AKAI side.
I'll have to dig out the scanner.
There are both in the same SM.
A kind AKer sent me a copy of the SM. Its a big one.
The only adjustment is the idle current
Connect a DMM across the emmiters on the output transistors and adjust the trimmers to get 25mv.
The trick is that the outputs are on the bottom (separate little board IIRC) and the trimmers up on top of the main amp board.
They have drawings. The ouptut connections shown are all BCE but I can't tell if I am seeing it from the top or bottom, so the actual transistors could be ECB
The board is AS-3502B and has the name AKAI on one end.
The emmiters are all on the AKAI side.
I'll have to dig out the scanner.
Adj
Here's a scan of the AA-1135/AA-1150 amp adjustment page from the service manual.
Here's a scan of the AA-1135/AA-1150 amp adjustment page from the service manual.
Hi
I've got one of this open right now in front of me.
i did the idling current adjustment
But, I've got on speakers terminals 15mV on one channel, and in the other about 50mV.
I see there is not bias adjustment.
in my case, this difference, is it matter? is it points on something?
what to do if something need to be done?
Thanks
P.S
I've encounter something weird.
When im playing music thru Aux while speakers disconnected, and reise the volume pretty high (50-60%), i start listening a tiny volume music thru the inside of the receiver.
in the area of the power amp board.
is it normal? does anyone encounter this thing before?
I've got one of this open right now in front of me.
i did the idling current adjustment
But, I've got on speakers terminals 15mV on one channel, and in the other about 50mV.
I see there is not bias adjustment.
in my case, this difference, is it matter? is it points on something?
what to do if something need to be done?
Thanks
P.S
I've encounter something weird.
When im playing music thru Aux while speakers disconnected, and reise the volume pretty high (50-60%), i start listening a tiny volume music thru the inside of the receiver.
in the area of the power amp board.
is it normal? does anyone encounter this thing before?
Last edited:
Hi @rotco,
If the 15mv and 50mv are measured on the speaker terminals with the volume all the way down, this is fine and won't cause any problems. Not every amplifier has a dc offset adjustment, it depends on the design.
As for the bleed through when listening to the AUX input at a high volume setting this is also normal. Not desired, but unfortunately normal. One way to avoid it is to turn off all external sources feeding the receiver except the one you want to listen to and turn the FM muting on and tune off a station so there is not output coming from the tuner.
-bob
If the 15mv and 50mv are measured on the speaker terminals with the volume all the way down, this is fine and won't cause any problems. Not every amplifier has a dc offset adjustment, it depends on the design.
As for the bleed through when listening to the AUX input at a high volume setting this is also normal. Not desired, but unfortunately normal. One way to avoid it is to turn off all external sources feeding the receiver except the one you want to listen to and turn the FM muting on and tune off a station so there is not output coming from the tuner.
-bob
Deceders
Member
Hi blhagstrom, would you happen to have a copy of the schematic for aa-1135/50? The ones available online are of poor quality and the circuit voltages are not legible.
