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Any Quad Eight Q8 Experts Here??

 
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tonewoods
buyin' a studio


Joined: 17 Apr 2004
Posts: 884
Location: Orcas Island, WA

PostPosted: Fri Dec 30, 2016 2:09 pm    Post subject: Any Quad Eight Q8 Experts Here?? Reply with quote

Hey all...

I just got these Quad Eight mic pres, and had a few questions for someone who might know a bit about them....
(Yes, I've googled the hell out of them... Wink )

They are supposedly model MP-404 pres...can anyone confirm this?
(I'll post a pic of a model stamp that might refute this...)

Anyway, they sound great, but the gain seems to be very low, so I have them at my tech's place to make sure everything is wired up correctly...

OK, some pics:









...and here's the stamp that is onboard:



Any light that anyone can shed on these puppies would be greatly appreciated...
Thanks, and have a great '17 all...
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hogfish
steve albini likes it


Joined: 15 Dec 2003
Posts: 301

PostPosted: Sat Dec 31, 2016 9:02 am    Post subject: Re: Any Quad Eight Q8 Experts Here?? Reply with quote

Maybe Im missing something, but aren't those line amps?...
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tonewoods
buyin' a studio


Joined: 17 Apr 2004
Posts: 884
Location: Orcas Island, WA

PostPosted: Sat Dec 31, 2016 4:02 pm    Post subject: Re: Any Quad Eight Q8 Experts Here?? Reply with quote

hogfish wrote:
Maybe Im missing something, but aren't those line amps?...


I do not know...anyone??
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A.David.MacKinnon
mixes from purgatory


Joined: 07 May 2003
Posts: 2881
Location: Toronto

PostPosted: Wed Jan 04, 2017 9:20 am    Post subject: Re: Any Quad Eight Q8 Experts Here?? Reply with quote

I don't know those pres or much about quad 8 but here's a thought. if it is a mic mixer and the gain is low maybe there's a missing output/summing section that adds the missing gain to the summed signal. Tapping off of the pre output might only give you part of the gain stage.
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tonewoods
buyin' a studio


Joined: 17 Apr 2004
Posts: 884
Location: Orcas Island, WA

PostPosted: Mon Jan 09, 2017 11:36 pm    Post subject: Re: Any Quad Eight Q8 Experts Here?? Reply with quote

...another shot:


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A.David.MacKinnon
mixes from purgatory


Joined: 07 May 2003
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Location: Toronto

PostPosted: Tue Jan 10, 2017 10:23 am    Post subject: Re: Any Quad Eight Q8 Experts Here?? Reply with quote

Are the outputs balanced?
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tonewoods
buyin' a studio


Joined: 17 Apr 2004
Posts: 884
Location: Orcas Island, WA

PostPosted: Wed Jan 11, 2017 6:18 pm    Post subject: Re: Any Quad Eight Q8 Experts Here?? Reply with quote

A.David.MacKinnon wrote:
Are the outputs balanced?


"No, they're not balanced."
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Scodiddly
ghost haunting audio students


Joined: 10 Dec 2003
Posts: 3369
Location: Mundelein, IL, USA

PostPosted: Wed Jan 11, 2017 8:22 pm    Post subject: Re: Any Quad Eight Q8 Experts Here?? Reply with quote

The only active parts seem to be those little 8-pin DIPs, unless I'm missing something. Can you post a closeup or give the numbers?
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