Bridgeable?

[fb4076]

OK, if an amp is bridgeable, does that mean that you can combine two channels to make twice the power? For example.... a bridgeable amp that is 2 x 320 Watts RMS... does that mean that if I were to bridge that amp... it would in theory be producing 640 watts RMS?

[delvryboy]

normally, yes

you really need to read the specs for the particular amp

general example : 2x100@ 4ohm, 2x190@2ohm, 1x380@4ohm bridged

in almost all cases, bridged output is the sum of 2 channel @ 2ohm

[geolemon]

Scratch the word "almost".

By nature, the amp will make the sum of it's 2 ohm power into 4 ohms, when bridged.

OR, if the amp is 1 ohm stable, it would make the sum of it's 1 ohm power into 2 ohms when bridged.

Or if the amp was 1/2 ohm stable... it would bridge to 1 ohm.
Etc.

It's not that the amp is making more power...
It's that it's able to do it at a higher impedance.

The amp still has the same limitations, regarding it's output power...
Which is why a 2 ohm stable amp can't be bridged to 2 ohms, or you'll smoke something in the amp.

100x2 at 4 ohms stereo (200 total)
200x2 at 2 ohms stereo (400 total)
400x1 at 4 ohms bridged
(Smoke, *poof*) at 2 ohms bridged

[The_Ancient]

Originally posted by fb4076@May 11 2004, 10:12 PM
OK, if an amp is bridgeable, does that mean that you can combine two channels to make twice the power? For example.... a bridgeable amp that is 2 x 320 Watts RMS... does that mean that if I were to bridge that amp... it would in theory be producing 640 watts RMS?

no that means it is able to go over a bridge

[fb4076]

ok, totally unrelated topic... but my subs are rated to handle 750 watts at 2 ohms. Would it be hard on them to underpower them at like 500-600 watts?

[delvryboy]

Originally posted by fb4076@May 12 2004, 08:35 PM
ok, totally unrelated topic... but my subs are rated to handle 750 watts at 2 ohms. Would it be hard on them to underpower them at like 500-600 watts?

nope, but i have never seen a sub rated at a certain load

[The_Ancient]

lol, subs create the load, it is not varaible

[fb4076]

What? that doesn't make any sense to me.... It is a 750 watt sub..... that is what they recommend to power it.....

[The_Ancient]

Originally posted by fb4076@May 13 2004, 02:00 PM
What? that doesn't make any sense to me.... It is a 750 watt sub..... that is what they recommend to power it.....

yes you will be fine with underpowering it, unpowering subs will never kill them but set your gain properally as always


and what we are talking about is a amplfier puts ou power at X ohm load, a ohm is a measurment of electical resistance

the Subwoofer Coil "resists" the electical charge the amplifier puts of, the Resistance is measured in Ohms

so the subwoofer is the LOAD



most of the times you sdont see subwoofers rated with XXXwatts at X ohms

that is the format for amplifiers

[fb4076]

yes, I understand that... the amp I am talking about is 550 watts at 2 ohms, and the sub is a 2 ohm sub, that the manufacturer recommends powering with 750 watts RMS