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Gear / Technical Help => Battery Boxes, Preamps, Mixers, ADCs, and Processors => Topic started by: hobbes4444 on February 25, 2009, 04:01:00 PM

Title: AT933/943 > ST9100 > Edirol R-09 line in/mic in?
Post by: hobbes4444 on February 25, 2009, 04:01:00 PM
In the above set up, should the ST-9100 output go line in or mic in on the R-09?  Assuming it's line in for most amplified shows, if it's a really really low volume acoustic show (gain fully cranked = low levels), would it be ok to go mic in? 
Title: Re: AT933/943 > ST9100 > Edirol R-09 line in/mic in?
Post by: stantheman1976 on February 26, 2009, 08:56:28 AM
The whole purpose of having apreamp is to power the mics and amplify the signal.  You don't need mic in if you have a preamp in the chain.
Title: Re: AT933/943 > ST9100 > Edirol R-09 line in/mic in?
Post by: hobbes4444 on February 26, 2009, 10:47:33 AM
The whole purpose of having apreamp is to power the mics and amplify the signal.  You don't need mic in if you have a preamp in the chain.

Ordinarily, yes, I understand, you'd run line in.  But I was at an acoustic show the other night that was surprisingly low volume.  I ran a different set up (DPA4061>battery box (no pre/gain)>R-09, mic in, att -20dB) and even with the gain all the way up on the edirol I was getting just -30 to -20 max during songs.  I didn't want to adjust the attentuation to 0 dB for risk of massive distortion during the clapping.  In the end, it turned out fine, and I just boosted levels a bit in audacity. 

But I wondered if i was running my other set up, the AT's and the ST9100, if I could sorta have 2 stages of gain by running the ST9100 into the mic in of the edirol (isn't the mic in "louder" or more sensitive than line in)?  at least it would allow a little more flexibility in getting the levels a little higher.  but if i did that, would it significantly affect/color the sound of the recording? 

A similar concern about inadequate gain was raised in another thread regarding the low output levels of the nak300s (full body or chopped), and whether the ST9100 had enough gain to get good levels at quiet shows.  That also got me thinking about the input for the 9100 and whether it would be (in)appropriate to run the pre into the edirol's mic in to get additional gain.  Sure, a pre with more gain would be ideal, but i gots what i gots. . .
Title: Re: AT933/943 > ST9100 > Edirol R-09 line in/mic in?
Post by: Church-Audio on February 26, 2009, 11:04:54 AM
The whole purpose of having apreamp is to power the mics and amplify the signal.  You don't need mic in if you have a preamp in the chain.

Ordinarily, yes, I understand, you'd run line in.  But I was at an acoustic show the other night that was surprisingly low volume.  I ran a different set up (DPA4061>battery box (no pre/gain)>R-09, mic in, att -20dB) and even with the gain all the way up on the edirol I was getting just -30 to -20 max during songs.  I didn't want to adjust the attenuation to 0 dB for risk of massive distortion during the clapping.  In the end, it turned out fine, and I just boosted levels a bit in audacity. 

But I wondered if i was running my other set up, the AT's and the ST9100, if I could sorta have 2 stages of gain by running the ST9100 into the mic in of the edirol (isn't the mic in "louder" or more sensitive than line in)?  at least it would allow a little more flexibility in getting the levels a little higher.  but if i did that, would it significantly affect/color the sound of the recording? 

A similar concern about inadequate gain was raised in another thread regarding the low output levels of the nak300s (full body or chopped), and whether the ST9100 had enough gain to get good levels at quiet shows.  That also got me thinking about the input for the 9100 and whether it would be (in)appropriate to run the pre into the edirol's mic in to get additional gain.  Sure, a pre with more gain would be ideal, but i gots what i gots. . .

You can run my preamp into a mic input. At full gain on my preamp but you have to make sure its a low volume show and that you have your mic input way down and slowly bring it up until you have enough gain. Thats the benefit of a very low noise preamp. You should then be able to get all the gain you need. Make sure the plug in power is off the recorder.

Chris
Title: Re: AT933/943 > ST9100 > Edirol R-09 line in/mic in?
Post by: stantheman1976 on February 26, 2009, 12:33:07 PM
My apologies.  I was also thinking about power.  I thought the mics in plus preamp might be too much voltage but the AT mics can handle more.
Title: Re: AT933/943 > ST9100 > Edirol R-09 line in/mic in?
Post by: Belexes on February 26, 2009, 01:26:03 PM
Run +20 on the 9100 line-in and record 24 bit, then boost in post if need be would be my recommendation. I've run 943>9100>R-09 before, but not much experience for any soft/acoustic type music.
Title: Re: AT933/943 > ST9100 > Edirol R-09 line in/mic in?
Post by: sunjan on February 27, 2009, 10:39:50 AM
Run +20 on the 9100 line-in and record 24 bit, then boost in post if need be would be my recommendation. I've run 943>9100>R-09 before, but not much experience for any soft/acoustic type music.

I was thinking the same thing. The mic-in gain on R-09 is noisier than the 9100.
And when taping acoustic stuff, move closer to the source to get a louder signal if possible.