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General Discussions => The Lab => Topic started by: API on March 06, 2006, 10:49:01 AM

Title: Help me identify this Quad Eight module.
Post by: API on March 06, 2006, 10:49:01 AM
Hi.

Does anyone know what this module is called??
And is it a Compressor to, or just a De-Esser???

(http://user.tninet.se/~bny477w/quad_eight.jpg)

Any input appriciated!

Regards,
API
Title: Help me identify this Quad Eight module.
Post by: BradAvenson on March 06, 2006, 12:30:46 PM
Is there an opto unit inside?  It could be the Automix 2B.
Title: Help me identify this Quad Eight module.
Post by: JustinS on March 06, 2006, 03:46:52 PM
Looks like an AM2B - the de-esser is just a filter in the sidechain.  Really nice optical compressor / limiter - usually unbalanced, so you may want to add some transformers.  The ones I've seen have had Q8 hybrid AM4 opamps insided them - which can be a pain if they die.

So, ermmm... if you could just post it out to me... then that would be great :grin:  :grin:

Justin.
Title: Help me identify this Quad Eight module.
Post by: BradAvenson on March 06, 2006, 04:43:50 PM
I wouldn't mind seeing some pictures of the insides if you have them.
Title: Help me identify this Quad Eight module.
Post by: gang of elk on March 06, 2006, 06:19:28 PM
Quote from: "JustinS"
The ones I've seen have had Q8 hybrid AM4 opamps insided them - which can be a pain if they die.



fyi, ken at orphan audio is talking about making replacements available at some point..  

http://www.orphanaudio.com/index.php?topic=28
Title: Help me identify this Quad Eight module.
Post by: API on March 06, 2006, 09:28:30 PM
I am now pretty sure that these are the AM2B compressors with a de-esser, not just a de-esser.
This makes it alot more interesting!!!
From what i understand they usually come in 2 modules, with the de-esser on a separate module, that also has a output control.
So these maybe were custom.

Will get some pics of the inside as soon as i can!

Thanks for all the input!

Regards,
API
Title: Help me identify this Quad Eight module.
Post by: squib on March 07, 2006, 02:56:23 AM
i've racked a pair of these in dim past
pm me if you want the schemo

they are a bit kooky, the sidechain is picked up post the input level control so you have to fight the comp control and input level control a bit to get the desired compression and the required makeup gain happening
and...from memory unbalanced in and out
the de-ess just switches in a bank of caps to the sidechain so that compression only happens above selected frequencies.
Title: Help me identify this Quad Eight module.
Post by: API on March 07, 2006, 05:15:51 AM
Hi.

Pm you for the schem and a few other questions.
Saw the ones you had racked on your site.
Does not look like you had the optional De-esser and output module with them, just the De-ess switch.

I believe these are custom ones, since it has the De-ess knob on the same face plate.
Apparently they came out of a custom Neve  (Oops, i said the magic word!) desk, which would explain the color of the face plate as well.

Does anyone know roughly how much the could be worth??

Thanks
API