weiss

How do you use your Neve 33609 compressor / clone?
« on: August 13, 2019, 12:46:39 PM »
I would be interested to hear your techniques of using the 33609 compressor from neve or similar clones.
Because of the combination of limiting / compression and the different time constants i find it it not as straight forward compared to my other compressors. Is there a special approach you follow? What material do you use it on? Do you omit one of the sections? Just looking for some ideas.
Thank you  :)


kambo

Re: How do you use your Neve 33609 compressor / clone?
« Reply #1 on: August 15, 2019, 01:27:59 AM »
my Igor staff are back home... but i use to get dc voltage from the power supply's adjustment/calibration out! and feed that to where ur control voltage going in... works really good, especially if u have a quiet part in the song, and kicking back in loud... so that DC voltage is setting an external threshold! measure and apply so ur compress,/limit thinks song is only dropped a bit!
Igor was so crazy surprised with it  ;D


edit: and if your diodes and transistors in specific section ( i forgot now) are not closely matched, dont even bother  building them, Igor told me!


« Last Edit: August 15, 2019, 01:41:47 AM by kambo »

weiss

Re: How do you use your Neve 33609 compressor / clone?
« Reply #2 on: August 15, 2019, 07:05:22 AM »
my Igor staff are back home... but i use to get dc voltage from the power supply's adjustment/calibration out! and feed that to where ur control voltage going in... works really good, especially if u have a quiet part in the song, and kicking back in loud... so that DC voltage is setting an external threshold! measure and apply so ur compress,/limit thinks song is only dropped a bit!
Igor was so crazy surprised with it  ;D


edit: and if your diodes and transistors in specific section ( i forgot now) are not closely matched, dont even bother  building them, Igor told me!

Interesting trick. What does it do exactly to the signal? I was more asking about the general settings and the type of music or tracks you're using it on. My unit sounds fine as it is now..

ruairioflaherty

Re: How do you use your Neve 33609 compressor / clone?
« Reply #3 on: August 15, 2019, 07:45:47 PM »
My Igor kit sits unbuilt, maybe someday.  But I used to rent a stunning original for mix work when I first moved to L.A.  I never got anything good out of the limiter section, but I have seen friends use it on drums with good results.

On the comp I found it excelled on the mids.  If a sound needed to be snappy, modern or had fast lows it didn't work.  But on mids like acoustic guitar, vocal etc it was glorious.


weiss

Re: How do you use your Neve 33609 compressor / clone?
« Reply #4 on: August 16, 2019, 07:30:23 AM »
My Igor kit sits unbuilt, maybe someday.  But I used to rent a stunning original for mix work when I first moved to L.A.  I never got anything good out of the limiter section, but I have seen friends use it on drums with good results.

On the comp I found it excelled on the mids.  If a sound needed to be snappy, modern or had fast lows it didn't work.  But on mids like acoustic guitar, vocal etc it was glorious.

Nice! I made similar experiences. I'm not sure about the limiter section either. Still trying to figure out how it interacts with the comp section threshold-wise.

Rob Flinn

Re: How do you use your Neve 33609 compressor / clone?
« Reply #5 on: Today at 04:06:03 AM »
To understand the 33609 it is useful to examine the circuit diagram.    I think that the limiter takes it's sidechain from a different point than the compressor.    The limit s/c is fed from a point just before the output transformer obviously so that it is capable of preventing an overloaded signal being passed on to the next piece of gear.    The compressor s/c is taken from a point just before the BA640.  Since the gain make up seems to be done by changing resistors on the BA640 one can conclude that the gain make up won't affect the compressor but it will affect the limit. i.e the compressor takes it's sidechain BEFORE the make up amp & the limiter takes it's sidechain AFTER the make up amp.  This makes sense because the limiter is there to stop overloading the next unit down the chain, whereas the compressor is there to reduce the dynamic range or increase the average signal level.   Or at least that's what the unit is designed for rather than pummelling the living daylights out of a drum signal.

The limiter is actually really good at holding things at a level.  If you scope it on the bench & you have the unit calibrated properly you can see that if you have the thresh set at +4dB & you wind a massive signal into it (maybe +30dB) it will hold it at +4dB perfectly.     If you want to get the limiter pumping you need to crank up the make up gain and it then starts to sound funky.   Personally I don't use Neve compressors for this function because things like the TG limiter I find have a preferential sound  in this capacity.

I quite like using the compressor to even the signal level out a bit & use the limiter to keep transients in check.    This is particularly useful if you use a bit of compression when tracking like I sometimes do.
« Last Edit: Today at 04:50:44 AM by Rob Flinn »
regards Rob


 

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