Uh, is it safe to run a power amp one side at 4ohm and one at 8? As in 3 monitors.
Dummy. But I've only ever had equal numbers of monitors.
Dummy. But I've only ever had equal numbers of monitors.
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Dummy power amp question.
- Thread starter 96tbird
- Start date
Where's the fun in that?
JOOC, what power amp are you using? Historically, we've always thrown our oldest lower-powered amp at the monitors...I mean, how much power do you really need? Wrong. As I understand it, monitors are less likely to feedback when provided with adequate headroom reserve.
Riis
s0c9
Supporting Member
Yes. I do know how to calculate ohms in parallel so it's 2-8's for 4 and one 8 on the other side.
The amp is 850 a side at 2 ohms. 600 @ 4, 400 @ 8. It's a new amp I bought because our singer owns the pa and the monitor head cooked. Good point though I'll look at the mains head and if it's less than this I can bridge the new one for 1700 @ 4 ohms.
I'm Canadian so it's a Yorkville of course. Sturdiest on the planet
The amp is 850 a side at 2 ohms. 600 @ 4, 400 @ 8. It's a new amp I bought because our singer owns the pa and the monitor head cooked. Good point though I'll look at the mains head and if it's less than this I can bridge the new one for 1700 @ 4 ohms.
I'm Canadian so it's a Yorkville of course. Sturdiest on the planet
s0c9
Supporting Member
Sorry... many folks are totally clueless on speaker impedance related to power amps.. and think they can string 3 or 4 wedges together off one side because "it works"!
I wanted to err on the side of caution
that is really freaking odd. feedback is depedent on a variety of variables. reserve power is not one I would generally include. mic, mic placement, monitors and EQ and the ringing out process, room eq are the things I think of ...
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4Mal is right.
Bad things can come out of monitors with inadequate headroom. Feedback isn't one of those things.
Agreed on all the components above. The headroom issue is something I read here on the forum (credible source, too); wish I could find the reference.
Riis
The old Pirelli advert... With great power comes great responsibility... I'm a fan of headroom...
maybe the source is me?
i find that way more power to wedges results in less EQ hacking needed to get them up to volume and thus less feedback issues once i get there.
i find that way more power to wedges results in less EQ hacking needed to get them up to volume and thus less feedback issues once i get there.
Yeah, I guess you qualify as a credible source. IIRC, you've also mentioned attenuating at 400-600 and 4K-6K as a first remedial step.
Riis
