Assistance choosing an Amp
vivaceious
Posts: 3
I have a pair of Polk Monitor 70's, which I use in my home with a decent system.
I've agreed to use them at house party events, and rather than dismantle everything I have hooked up in my house, I intend to simply purchase a new rack-mounting type amplifier.
The pre-amp that will be used has:
I believe 0.775V corresponds to +0dB signal level, so I should set the amp's input trim down to -2dB to make up for the difference. Converseley set the trim up a few points for the 1.4V sensitive amp. Yes? No?
It seems the "max input level" of +21/22dB is greater than necessary to accommodate the +18dB maximum of the preamp. Or is this going to clip, and I need to set the trim much lower than I wrote earlier?
So that is the part I have shaky grasp of. This next question I have a grasp of from an electrical-math standpoint, but not in any practical sense.
What would be the effect of mismatching a 10kohm preamp to a 20kohm amp?
Thanks so much. Yeah I'm pretty new to this side of things. Usually I just hook everything up to devices that were meant to operate together.
I've agreed to use them at house party events, and rather than dismantle everything I have hooked up in my house, I intend to simply purchase a new rack-mounting type amplifier.
The pre-amp that will be used has:
- Standard Output Level: +2dB / 10kohms
- Maximum Output Level: +18dB / 10kohms
- Only unbalanced connectors
- Input Impedance: (A)20 or (B)10 kohms
- Input Sensitivity: (A)0.775 or (B)1.4 V
- Maximum Input Level: (A)+21 (B)+22 dB
I believe 0.775V corresponds to +0dB signal level, so I should set the amp's input trim down to -2dB to make up for the difference. Converseley set the trim up a few points for the 1.4V sensitive amp. Yes? No?
It seems the "max input level" of +21/22dB is greater than necessary to accommodate the +18dB maximum of the preamp. Or is this going to clip, and I need to set the trim much lower than I wrote earlier?
So that is the part I have shaky grasp of. This next question I have a grasp of from an electrical-math standpoint, but not in any practical sense.
What would be the effect of mismatching a 10kohm preamp to a 20kohm amp?
Thanks so much. Yeah I'm pretty new to this side of things. Usually I just hook everything up to devices that were meant to operate together.