Topic: Chaining a preamp to a SP-SPSB-6

[rdflash]

the sample isnt working it says 0 kb, so I am guessing there is nothing there, and the file didnt upload

[scoper]

I just ran some tests at home, with the following gear:

AT853
SP Battery Box with level controls and bass rolloff (switchable frequencies)
Church Audio Preamp
jb3
SVU-1

I recorded a song I knew to be bass-heavy (Bruce Springsteen "Born in the USA" from the live 75-85 box).

Levels on the BB were set to 2/3 volume (to attenuate the signal slightly)
Mics were setup 1" from the speakers, volume up loud (close to loud concert level, I estimate)
Input level was optimized using the SVU-1, calibrated to peak at -3

First pass, with NO bass rolloff, the recording distorted horribly, even though the recording (as shown in Adobe Audition) stayed steady at -3 db - a clear brickwall.

Second pass, with rolloff filter set to 69hz (the next lowest setting), the recording was clean - still plenty of bass, but not distorted.

An offline conversation with Chris Church established that you CAN put the battery box in series, between the mics and the preamp, without it harming the mics. However, at least with the AT853's, be careful of the bass output, because it will overload the preamp.

Other recordings with less bass were not a problem.

I'll be testing this combo on Thursday, for the Roches holiday show at Town Hall in NYC. I'm in the 2nd row, so I expect I'll be getting sound primarily from the stage monitors, which has been a problem in the past. We'll see how it goes.

Scott

[rdflash]

+ T Scott

but doesnt Church's pre-amp have level controls and bass rolloff switchable frequencies as well?

and do you have his mics at all...or has anybody tried his card. mics.?

[scoper]

but doesnt Church's pre-amp have level controls and bass rolloff switchable frequencies as well?

No, the Church preamp (at least the one I have, the ST-20A) has but two toggle switches:
On/Off
-27db/+27db

No other controls. I normally use an AD-20 to provide digital line-in to the jb3, but a friend is doing a mod for me for 1/8" input, and I won't have it back in time for the show this week, so I tested the combo beforehand.