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Coenie
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19th April 2012
Old 19th April 2012
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problems with setting up REW

Hi all,

my last post was about my KRK Ergo not working. I guess it died on me. But it made me very curious where and why it sounded so much different in the low-end when it did work.... so i wanted to use the ergo's mic to shoot my room with Room EQ Wizard.

There comes the next problem: starting with calibration makes me itch already. if i am correct i first need to calibrate stuff with my sound card (a M-Audio fire wire solo). I can't seem to get any calibration going, so my question is: what am i doing wrong here.

I am in my preferences and want to select my sound card. at the imput device it shows my sound card, but on the output it only see's default device or java sound audio engine. So i turn both to default setting (Which rew says i should do). Then make a loop from my input to my output for calibration. No matter which output i choose on the fw solo it doesn't show any sign of the output coming in. My preferences from my sound card see a signal coming going out and coming in on one channel but REW doesn't. So what is it that i forget to do?

any clues?

Regards,

Coen

ps i am runninc Room EQ Wizard on a Mac !
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19th April 2012
Old 19th April 2012
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REW has been known to have probs with FW. Also it has been known to not play nice with Mac.

I use a Lynx AES16e and could not get it to work with REW and my mac. I installed windows via bootcamp and REW/AES16e worked like a charm.

Hope that helps,

jB
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19th April 2012
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Ok, thats a bit prehistoric if i may say so. I mean even the bad guys are designing malware and virusses these days for mac, so why does this program having issues with mac?

Anyway, thanks for the tip. I might concider installing windows theu bootcamp.

Is there any other similar software available for mac like rew?

Thanks for your reply.
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19th April 2012
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room eq on mac with fireface 800 doesn t work. It doesn t see the soundcard.
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19th April 2012
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Quote:
Originally Posted by Coenie View Post
Ok, thats a bit prehistoric if i may say so. I mean even the bad guys are designing malware and virusses these days for mac, so why does this program having issues with mac?

Anyway, thanks for the tip. I might concider installing windows theu bootcamp.

Is there any other similar software available for mac like rew?

Thanks for your reply.
Yeah but its free

jB
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19th April 2012
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Quote:
Originally Posted by Coenie View Post
Ok, thats a bit prehistoric if i may say so.
Completely agree. Unfortunately that prehistoric behaviour comes courtesy of some dinosaurs at Apple who broke their Java runtime's handling of the inputs on Firewire soundcards then managed to go extinct before fixing it.

FuzzMeasure is a good OS X-native measurement app.
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19th April 2012
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Quote:
Originally Posted by JohnPM View Post
Completely agree. Unfortunately that prehistoric behaviour comes courtesy of some dinosaurs at Apple who broke their Java runtime's handling of the inputs on Firewire soundcards then managed to go extinct before fixing it.

FuzzMeasure is a good OS X-native measurement app.
I wasnt going to say it...

I would try bootcamp first. Fuzz is good but compared to REW, its kind of pricey

jB
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20th April 2012
Old 20th April 2012
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Native

REW will run fine on the Mac's onboard Line I/O
DD
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20th April 2012
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Ok, but i can't connect my monitors to my line I/O from my mac. The sound from the standard speaker in the mac pro is surely not capable for shootng a room with rew.
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Cable

Yes you can. The Line Out is similar to a CD player. 2 Volts I would guess.
That will easily drive any amp or active monitors. Make or buy a 3.5 mm Stereo MiniJack to whatever your Monitors will accept.
DD
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Dan, if i understand you correctly: i need to find a cable that has two male xlr's and one mini-jack, insert it in the back of my mac pro?
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Solder

Yes. Unless you have nice MiniJacks I recommend buying a Mini to two phonos (iPod to amp cable) and replacing the phonos with XLRs
Ground to 1, signal to 2.
Be sure to select and use the Line Out at the back rather than the Headphone out at the front.
DD
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Thanks for this tip Dan, gonna search dor a cable and i will let you know if it worked. Do you think i could use the measuring mic from the ergo to shoot the room?
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No Idea

I have no idea. If you could turn off the Software maybe the SPDIF out would give a direct signal from the mic preamp.
DD
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Quote:
Originally Posted by Coenie View Post
Dan, if i understand you correctly: i need to find a cable that has two male xlr's and one mini-jack, insert it in the back of my mac pro?
Just FYI: This will not work if your microphone needs phantom power!
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Another downside to using the IO card from the mac is that you cannot properly calibrate REW for the "color" that your M-Audio card has.

jB
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But if i keep the fw solo plugged in an select it as input, and plug the monitors in the line output that would do the trick wouldn't it?
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Quote:
Originally Posted by Coenie View Post
But if i keep the fw solo plugged in an select it as input, and plug the monitors in the line output that would do the trick wouldn't it?
Sorry, for the too short comment above. I had to run out for a minute. The way I connected it, is the following:

Mac -> MiniJack Output -> Adapter cable MiniJack to 1/4" -> Powered Monitor(s).
Microphone -> Audio Interface XLR (for phantom power) -> Audio Interface Output (1/4 Jack) -> Mac MiniJack Input.

Dan mentioned in another thread that the audio output on the audio interface may work. That was not my experience in my case. My audio on the interface (Tascam FireOne) had drop-outs. Guess you have to try what works in your case based on the OS version, driver availability, audio interface type etc.
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20th April 2012
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FireWire

I don't think that will work Coenie. The issues are with Apple Java Firewire Multichannel. You have the perfect storm, all of the above.
Perhaps you could get some sort of analogue or digital output from the Solo and connect that to the Analogue or Digital Line In of the Mac.
In any case use the Line In. REW may see the Solo inputs and half work but the Measurements will be gobblydegook.
When you get going, you can Calibrate your soundcard if you wish, although I have found the MacPro I/O to be within 0.3dB of Flat 20-20K
Line Out to Line In can be usefully used to correct for the delay inherent in the Computer. Loopback Correction.
DD
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