Wattage sucks

Minorthreat412 · Post by **Minorthreat412** » Tue Nov 22, 2005 6:44 pm

If an amp says "500 watts RMS x 1 bridged output at 4 ohms" and you hooked two speakers up in the bridged position would the amp run at 2 ohms and put out 500 watts to each speaker? or will it hurt the amp?

This stuff annoys me.

Why do they put "250 watts x 2 RMS @ 2 ohms." How the hell do u get 2 ohms from 2 speakers unless they are hook up to the same channel? This frustrates me so much.

Thanx,
Chad

smoker · Post by **smoker** » Tue Nov 22, 2005 6:56 pm

whaTdid you buy?

ridr4lif · Post by **ridr4lif** » Tue Nov 22, 2005 7:01 pm

Minorthreat412 wrote:If an amp says "500 watts RMS x 1 bridged output at 4 ohms" and you hooked two speakers up in the bridged position would the amp run at 2 ohms and put out 500 watts to each speaker? or will it hurt the amp?

This stuff annoys me.

Why do they put "250 watts x 2 RMS @ 2 ohms." How the hell do u get 2 ohms from 2 speakers unless they are hook up to the same channel? This frustrates me so much.

Thanx,
Chad

Running an amp bridged at 2 ohms, if it is not stable will more than likely kill the amp. If the amp is 250x2 at 2 ohms, and you have dual 4 ohm speakers, than this is totally possible. Run each sub to a channel and run the v.c.'s in parallel. Or, you could still run the amp bridged, and wire the speakers together in a series/parallel config.
edit: here is a link to rockfords wiring wizard: http://www.rockfordfosgate.com/rftech/wiringwizard.asp

Post exactly what amp, and specs, and what subs, and specs and we will be able to help you further.

High Society · Post by **High Society** » Tue Nov 22, 2005 10:12 pm

the amp run at 2 ohms and put out 500 watts to each speaker?

Most likely it would kill that amp, if it's not stable at 2 ohm. Anyway, it would just spilt, 250 to each. Check out that link Tedd sent you, it will help you out a ton.

Minorthreat412 · Post by **Minorthreat412** » Wed Nov 23, 2005 11:01 am

I was just reading the specs for a few subwoofers and just couldn't understand completely about the 2 ohm total. I've never played with dual voice coils before. Do most subwoofers come with two 2 ohm VC's? or do most of them come with two 4 ohm VC's?

Thanx,
Chad

PS. I was just wondering....is there any possible way to see how much power your amplifier is putting out to each speaker? I've tried stuff with multimeters before and I'm leaning towards the answer no. But just to be sure. Thank you.

Bwcad1 · Post by **Bwcad1** » Wed Nov 23, 2005 11:13 am

there are ways to measure it but you dont have the capapbility... as for the vc configs there really isnt more of one than the other imo maybe a bit more dual 4 ohm subs cause most people run two in which case that present a 1 ohm load to the amplifier. but that is mostly for high power subwoffers. did that site help any?

Minorthreat412 · Post by **Minorthreat412** » Wed Nov 23, 2005 11:14 am

I still have one more question. Sorry. What if you have a 2 channel amp hooked up to two 4 ohm SVC subwoofers. What will the resistance be/How much power will the amp be putting out to each speaker?

Now, what if you hooked up two dual 2 ohm VC subwoofers up to that same amp. What will be the power and resistance rating?

Sorry again for these questions. It's taking me so long to understand. I don't know how 2 channel amps work exactly. Mono amps are easy because they are just ran parallel off of 1 channel. I don't know. Thank you again.

Minorthreat412 · Post by **Minorthreat412** » Wed Nov 23, 2005 11:16 am

Yes, I've been there a few times before and it helps me out completely with the MonoBlock amp but not the 2 channel amps. Thanx.

Bwcad1 · Post by **Bwcad1** » Wed Nov 23, 2005 11:17 am

for the first question it would either be a 2 ohm load or an 8 ohm load. per channel in other words each channel would have a 2 or 8 ohm load at the amplfier. you would have either a 1 ohm load or a 4 ohm load. in the same respect. i was confused on this at first to its difficult to understand you will get it...

Bwcad1 · Post by **Bwcad1** » Wed Nov 23, 2005 11:24 am

http://www.rockfordfosgate.com/scripts/ ... _faqid=468

this will show you how to measure the output of the amp