need schematic for acoustat mk131/nt

[moray james]

nt

 

[bear]

moray,

131/nt??

What's "nt"??

I have the Acoustat 131 MkII interface schematic around here somewhere... it's pretty simple, and if you have the box, and I think you do, then it is right in front of you - no surprises.

I can probably answer specific Q's from memory... probably.

_-_-bear

 

[moray james]

Mk 131

Bear: sorry no text (nt). The units I got have been played with so I wanted to know what the cap value of the stock crossover is. Would be glad to have a copy of the schematic if you have one though. Thanks for the reply regards Moray James.

 

[Dick West]

I can scan and upload here the schematic for the MK-121, Don't know how similar it is to the MK-131. Perhaps Bear can comment on this.

Let me know if the MK-121 schematic will help?

 

[moray james]

Mk 121

Thanks Dick: I have a copy of the Mk 121 schematic. Sounds like the Mk 131 uses a 220 uf cap which was later changed to a 47 uf cap with the Medallion mod. But I would still like to have a copy of the Mk 131 schematic if anybody has one. Thanks again. Regards Moray James.

 

[Dick West]

Aha . . . You are dealing with a medallion box. It made for a big difference in the components. There used to be a web site that had info about all of this and offered to do updates -- for a fee. Have you done a good GOOGLE on this? Also, post your questions at the Madisound board. Some bright professionals hang there and I'll bet you'll find someone who can answer your questions and point you to the info you need. Good luck. I enjoyed a pair of Acoustat IIa for years. They really were something. Even had a nice chat with Bob Strickland at the Chicago CES back in the late 80s.

 

[Brian Beck]

Might have been Bob's alter ego, Jim, the real Acoustat guru 😉

 

[Dick West]

You are correct. It was a long time ago.

 

[VivaVee]

I have them all at home. I'll try to scan it tonight and send to you tomorrow. What is the forum file size limit?

 

[VivaVee]

Here are the two MK131 schematics that I found last night

 

[moray james]

no attachment

Allan: attachment did not make it. Do you want to try again or send it via email to me? Regards Moray James.

 

[VivaVee]

Re: no attachment

Allan: attachment did not make it. Do you want to try again or send it via email to me? Regards Moray James.

Dear Moray,
I tried to attach it again. This time I got the error message that the files are too big - about 80kb each. So it will need to be email

-Alan

 

[moray james]

Try this

Thanks for all the effort Allan: try mailing to this address moray dot
james
at 3web
dot com
Regards Moray James

 

[Audiofanatic]

Re: Re: no attachment

Dear Moray,
I tried to attach it again. This time I got the error message that the files are too big - about 80kb each. So it will need to be email

-Alan

Hi Alan,

Would you be so kind as to mail it to me too?

I have a friend that was seeking for this for a long time.

TIA.


Cheers,

Audiofanatic 😉

 

[MichaelEOlmedo]

Hoping to find a schematic diagram for mk-131. It was discussed and not posted here. Have a set of Acoustat Speakers and one is now sounds about 10 db less than the other side. Have an electrical engineer who can assist me in trying to diagnose the interface, but would like to see a schematic. Can any of you help? Thanks

 

[bolserst]

Hoping to find a schematic diagram for mk-131. It was discussed and not posted here. Have a set of Acoustat Speakers and one is now sounds about 10 db less than the other side. Have an electrical engineer who can assist me in trying to diagnose the interface, but would like to see a schematic. Can any of you help? Thanks

Somebody posted a hand drawn schematic for his MK-131 interface here:
Acoustat Answer Man is here #1850

AcoustatAnswerMan mentioned that the MK-131 is very similar to the MK-141.
Comments and MK-141 schematic posted here:
Acoustat Answer Man is here #1852, #1853

 

[MichaelEOlmedo]

Thank You all very much!