Pioneer M22 Power Amp Schemetic

[HKC]

Hello

Does anyone has the schemetic of Pioneer M22 Class A power amp to post it here?

Thanks

 

[halojoy]

Hello
Does anyone has the schemetic of Pioneer M22 Class A power amp to post it here?
Thanks

Have Pioneer ever made a real Class A amplifier?
They often call their Class AB amplifier for that.
How old is that Pioneer M22 ?
--------------------------------------------------------
halo Google searched: pioneer "M-22" schematic
got 20 hits:
http://www.google.com/search?num=30...neer+"M-22"+schematic&btnG=Google-sökning&lr=

On this link there is M-22 schematic for sale:
http://www.halls.com/manuals.html

Here you can get the Service Manualhttp://www.stereomanuals.com/)
http://www.stereomanuals.com/manuals/pioneer/pioneer_all-1.htm

/halo - surprised by a 40W Class A Pioneer Amp

 

[halojoy]

Pioneer M-22 Amplifier - information

http://www.silverpioneer.com/m22_amplifier.htm

An externally hosted image should be here but it was not working when we last tested it.

shows the Pioneer M-22 Amplifier
from the "series 20"

/halo

 

[HKC]

Hello Halojoy Thanks for giving the information.
I recall Pioneer manufactured the M22 power amp in the mid - late seventies. I am not sure is it a real Class A power amp but the heatsinks are quite hot when amp is working.
I have the M22 power amp and the C21 pre amp but both amps needed to re-store so I need the schemetic to do so.

 

[halojoy]

Hello Halojoy Thanks for giving the information.
I recall Pioneer manufactured the M22 power amp in the mid - late seventies. I am not sure is it a real Class A power amp but the heatsinks are quite hot when amp is working.
I have the M22 power amp and the C21 pre amp but both amps needed to re-store so I need the schemetic to do so.

I think I read 1977-79 in the site.
I think it is real Class A Amplifier.
And probably some of the best Amps Pioneer ever have done.

You can be proud to be owner of such a classic amp.
Vintage collectors like that model,
and would give you a lot of money for it.

/halo

 

[HKC]

Halojoy

I believe most of the modern amps' sound quality are better than these two amps but I like these two amps especially the body styling of the M22 and I considered these amps were the two best amps that Pioneer have ever made that is why I want to re-store them.

Regards

 

[KaLok]

Pls leave your mobile phone no. to my email, maybe I can help you.(I also live in HK)

 

[jan.didden]

M22

Service manual are available from www.schaltungsdienst.de

Jan Didden

 

[slamriders]

Pioneer M22

is this theme still actual?
I own a Pioneer M 22 on my own. I have repaired it on my own. Since I am physicist I know what to do. If you want me to repair it, I will do it for 500Euros. If no interest let me know if I can buy the M 22 from you for 400Euros. Best regards.

 

[mshari]

pioneer m22

Hello
I have one but there is a high temperature
what is the solution

 

[mshari]

Hello
I have one but there is a high temperature
what is the solution

 

[slimecity]

Its Class A. Its supposed to run hot.

Have you tried measuring the actual temp with a laser thermometer? If you think it is running too hot it may be an idea to post the temp readings that you get here.

 

[huggygood]

maybe you can also download the manual service and to control the bias and offset ...

 

[mshari]

hello
It works for about an hour, and then it stops working because of the extra heat.

 

[mshari]

I'll replace all the capacitors.
You'll get me soon.

 

[mshari]

My little experience in electronics
I want to know the adjustment of displacement trimmer VR1 and VR2 850mv
Thank

 

[jaycee]

Pioneer M22 service manual is on Hifi Engine.

 

[mshari]

All capacitors have been replaced and now work well and do not know the high temperature is normal