Jonkan

loading down api312 outputs
« on: May 29, 2005, 12:29:54 PM »
I read this over at gearslutz:
Quote
Originally Posted by Flora
I recently got a pair of the API 512c's. I love the way they sound but even with the pad on the signal is often too hot even on sources of very moderate volume. I have 2 more spaces in my API rack and I need a couple more mic pres - so my question is: would the BAE 312s (which Ive heard so many great things about) be better in this respect or do they have the exact same issue?.



and the answer:

Quote
On the API gear in the racks you have to load down the ouput.

Its part of the reason they sound differently than in the board(more mid forward).

I think API recommends a 600ohm resistor, but i've gotten a closer sound to the board with a 1200ohm resistor on the output


So, having built some api312 channels..is this something that i ought to do to my pres to get the most out of them? Can anyone explain to me why (or why not) i should do this?

I talked to tekay about this some time ago and he measured up the freq response using a profile 4048 transformer and a 600ohm resistor, and it was the same as without one if i remember correctly. But the signal output level got a bit lower. So maybe i dont really need to try this?
But seeing someone else recommend it got me interested.

any thoughts?
/Jonas

Between which pins on the xlr out do i so


soundguy

loading down api312 outputs
« Reply #1 on: May 29, 2005, 12:54:57 PM »
the resistor would go between pins 2 and 3 on the XLR.  Im not mr. smartstuff or anything, but I dont think thats the problem.  The 512C uses a big step up transformer on the input which is waaaay different than the older modules which uses a lower ratio.  I havent screwed with loading the output but the differences between these has always seemed to be the input for me.

dave

chips are good with dip...

Jonkan

loading down api312 outputs
« Reply #2 on: May 29, 2005, 01:30:18 PM »
ok.. that seems reasonable... thanks!
/Jonas


 

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