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Old 4th February 2014, 11:37 AM   #1
maddins is offline maddins  Germany
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Default Ross 12x2 mixing console schematic?


sorry to bother you with this kinda question. I know this console is crap but anyway, I'm thinkin about improving the input section for less noise. I couldn't find the schematic anywhere...

thanks in advance,

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Old 4th February 2014, 12:11 PM   #2
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you'd be lucky to get any info on these even when they where in production their tech support was pretty poor.
at one point in my life i purchased a set of "Typhoon" speakers they made along with two amps after a problem with the amp and the frustration i went through trying to get parts and info i gave up and unloaded everything
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Old 4th February 2014, 03:01 PM   #3
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Location: The Jurassic Coast, England. GB
It is the same as the RX-8X2
StereoManuals Manuals G (General) Price and Shipping Codes Chart
Support for Fender, Marshall and all Valve Equipment; Audio Innovations, Audiorama FU29, Quad and Leak.
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Old 4th February 2014, 07:09 PM   #4
maddins is offline maddins  Germany
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Thanks a lot folks, that solves it! I'll order the manual @ stereomanuals - didn't find any other source anyway.
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Old 5th February 2014, 04:53 PM   #5
JMFahey is offline JMFahey  Argentina
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What is your exact noise problem anyway?
Please describe or even better record and post.

That´s a decent generic mixer, no better and no worse than a million others.
Noise should not be objectionable or even noticed unless recording a hummingbird 30 feet away but on a Rock/Pop situation it dissappears.

Unless you are setting gain and EQ levels wrong.
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Old 6th February 2014, 05:48 AM   #6
maddins is offline maddins  Germany
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Join Date: Oct 2008
Hi JMFahey,

yes, I agree on you. It's noise performance is acceptable but I thought about adding the missing P48-supply and in the same run improving the input stage. I've seen TL072's in it - they are no crap, neither very low noise. Just replacing them may not yield a huge noise improvement as the other impedances in front of the opamps may be dominant in terms of noise. I regard this subject as solved and would like to thank you all for your time!

All the best,

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