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Author Topic:   Keema Level Contol
R
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posted 07 May 2002 08:31         Edit/Delete Message   Reply w/Quote
Thanks for all the tips...
In my workspace I use a bunch of Genelec 1029A's going directly out of the capy.....the 1029's do have volume control....but leveling is a pain....with 'live' work I'm having an even bigger problem....I spec'ed out some active Meyer Sound stuff for a project....and they do not have attenuation pots!....so going out of the Capy is tricky.....and requires 'set-up' time.
Thanks again...

[This message has been edited by R (edited 09 May 2002).]

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babakool
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posted 07 May 2002 14:56         Edit/Delete Message   Reply w/Quote
I'm not sure what you are meaning by "passive" here as all of the Coleman Audio devices are active by my definition, meaning powered, and the ones you indicate are still just a type of mixer. And pretty darn expensive ones at that. I encountered the same problem when first attempting to use my Kyma system as a front end for a DAW. Due to lack of driver support Kyma is pretty useless for this IMO. Due to my preferred way of working I knew that trying to do it all from within Kyma would prove frustrating. My solution was to pick up a Korg OASYS PCI card which, besides providing fab physical modeling synthesis, also very desirable, has as it's basic software metaphor a highly functional ASIO 2.0 compliant 12 in/20 out mixer. Now I just route my Kyma digital outs to the OASYS mixer and have it available in my other apps. My real preference would be for an ADAT i/o option for the Capy (STRONG hint to SSC) as I doubt the final ASIO implementation for Kyma, whenever it arrives, will be as robust as my current set-up. Also, you can only use one driver per app, so a hardware solution for multichannel streaming of Kyma audio would be much more useful. When and if such a solution might be available is unknown but "dems da breaks".
Regarding your situation, I don't know your exact set-up but assume you have powered monitors without a separate power amps gain knob handy. Always a simple, cheap and inelegant solution to such problems. If you don't have a Motormix you could pick one up off Ebay (as I did) for what you are going to pay for the Coleman boxes. While still technically a mixer, it's added functionality to Kyma is well worth it's cost. At least then your master fader would map to a physical fader. If you are already a MM owner and just want the hardware level control why not something like the the Midiman Multimixer 6
http://www.midiman.com/products/m-audio/multi6.php

I'm choosing a low-end example (around $79 mail order) because there are many other similar units around for more. You are not really "mixing" with it but just having a handy little box to control levels. While I'm sure the Coleman boxes pass the audio like nobodies business, they do so at much to high a price for my taste. I have also been steadily eliminating excess rackmount gear from my life for years and happily am down to a Capy and a MIDI interface. My 2¢ and YMMV.

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R
Member
posted 07 May 2002 16:26         Edit/Delete Message   Reply w/Quote
[QUOTE]Originally posted by babakool:
[B]I'm not sure what you are meaning by "passive" here as all of the Coleman Audio devices are active by my definition, meaning powered, and the ones you indicate are still just a type of mixer.

passive attenuate....I don't want to introduce any gain/coloring of the signal btwn the cappy and the monitors. An ideal unit for the cappy would be 8x8 analog with stepped attenuators.....no eq no panning, no input output gain.

I currrently bring my surround monitors STR8 out of the cappy......but as you know this is a problem when you boot-up.....that static and that anoying 'keema' sound file (gotta change that ckyma file This is an even bigger problem *live* without master attenuation over your surround field . . . .

Yes...the motormix is great......but you still cant kill the audio on startup or level all your speakers at once.......

Speaking of multi channel audio...is SS planning to adopt or 'create' a multi channel sound file format? The 'save as stereo' profools way has gotta go.........

thanx for the tips...ill take a look.


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babakool
Member
posted 07 May 2002 17:02         Edit/Delete Message   Reply w/Quote
Ahh... so you are doing surround. That is a different kettle of fish. Since you've sprung for the extra dough in speaker/amps, that SR5.1 looks like it would be a solution. Don't know if there are comparable products but understand why you're going batty. As to multichannel files, your guess. I believe the consideration would be that a Timeline is already multichannel and you can record all the tracks to mono files, but I can dig where you're coming from. Good luck getting it all turned down.

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pete
Member
posted 08 May 2002 05:44         Edit/Delete Message   Reply w/Quote
Hi R
I would draw a sketch if I knew which drawing package files you could read, so instead I will try to describe it in words.
With this solution you will need to get out your soldering iron, but it shouldn’t be too hard to do. You will need to buy some 10k ohm log potentiometers (pots) , (one for each channel used). You can used duel ganged and have one control for each pair of outputs if you prefer and you can use sliders or rotaries as per your taste. I am assuming that your power amps have balanced inputs if not let me know and I’ll describe another alternative.

The pot has three connectors:
1 the clockwise connector (CW)
2 the wiper (W)
3 the anticlockwise connector(ACW)

Connect the Cappys hot connector Pin2 to the pots(CW)connector.
Connect the Cappys cold connector Pin3 to the(ACW)connector and also connect this to the amps cold Pin3 as well.
Connect the Cappys ground Pin1 to the amps ground Pin1.
Connect the (W) to the amps hot Pin2.

This has some disadvantages in that a max of 5k ohms could be introduced into the line to the amp and if the cable to the amp was very long, then the capacitance may produce a loss of hi frequency. Also the balanced line has become lop sided but I suspect you wouldn’t notice the difference especially if you keep the pots nearer to the amps.

If you could give me more details about your set up there may be a better solution.

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SSC
Administrator
posted 08 May 2002 09:53         Edit/Delete Message   Reply w/Quote
Also, I'm not sure whether everyone knows this or not, but the MotorMix can act as a global attenuator as well (on all channels). You know the rotary at the upper right of the MM? If you press the small square button just below that rotary, it changes from being a preset selector to being a global attenuator. When you switch it over, the LCD displays an output level number.

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