DIY Mic Pre Kits, Lunchbox Mic Preamp Kits, Power Supply Kits

OK, it seems like the FiveFish directions indicate setting the power supply voltage for 500 series modules around +/- 20v. In response to another question Ruel recommended +/- 18v.

Everything else I've read puts the spec at +/- 16v. Are these units going to be happy with more voltage? Are FiveFish x72 pre's going to be happy with 16v? I'm thinking of setting it low, at 16v, and seeing how things sound.

Don't want to fry my ancient Aphex CX1 compressors.

Mmmm... no. The 500 series preamps don't have on-board voltage regulators and they just accept whatever the lunchbox rack supplies to it - which is +/-16V as per spec.

If you have the mk2 series, (i.e. rack version preamp), these preamps have on-board regulators that you can adjust to +/-18V. So to give it some extra buffer, you can set the PSU-2448 to +/-20 or +/- 22V. Because when this voltage arrives at the mk2 preamp, they'll be regulated down to +/-18V.



They'll work even with +/-15V or lower.

+/-16V will be just fine.

_________________