4 channel amp?

WHat if I just want to run the subs for now?Cobra Kai Never Die

Nouse is correct in that the amp will see a 1 ohm load per channel if bridged at 2 ohms

My point is that when you bridge an amp, it does not cut the ohm load in half. Statements like that only serve to confuse others. Impedence is measured through the resistive load placed on the amplifier. Most 2/4 channel amplifiers can not go below 4 ohms when in bridged mode.

Lets just start calling apples oranges instead. A 4ohm load is a 4ohm load and a 2ohm load is a 2ohm load. The amplifier does not change this fact!

Dont start getting smart because your wrong...no offense but that last comment sounded like your flustered and won't accept the facts. Yes we know that the amp cannot control impedances...

nouseforaname wrote: ok, you seem to be the one confused. a STEREO amp, not MONO, is just like having two amplifiers in one chassis. the term "bridge" is just that, its a bridge between to amplifiers. say for instance you have two 4 ohm svc subs wired in parallel to give you a 2 ohm load. now, when dealing with a stereo amp, when you bridge the "two amps" (the two channels) together, those "two amps" have to share the ohm load you give them, thus each amp seeing a 1 ohm load which with most stereo amps is unacceptable. sure the ohm load you supply may be 2 ohms, but each side of the amp sees 1 ohm. mono amps are not like this because is basicaly "one amp" in one chassis so if you give it 2 ohms, thats what it sees due to not having share the load with "another amp".

Actually, a stereo amp is NOT the same thing as having two amplifiers in one chassis. That is "Dual-Mono". A stereo amp must have a common voltage rail, between the two channels, to technically be called stereo. A dual-mono amplifier is NOT bridgeable, EVERY stereo amp IS bridgeable, whether the manufacturer provides for it in the amplifier, or as Orion used to do, provides an external bridging module. Dual mono can be used as stereo, and stereo can be used as dual mono, but dual mono is NOT the same thing as stereo, they are NOT bridgeable. I hear a lot of people saying that in bridged configuration, the amp channels are "sharing the load". Wouldn't sharing the load make the load lighter for each channel, in effect making the amp "see" a higher impedance? Answer: Yes. That's what "sharing the load" is. If you have one truck, producing 100 horsepower, towing a load that takes EXACTLY 100 horsepower to keep it moving, and you add an additional IDENTICAL truck to SHARE that load, the trucks each only have to produce 50HP, right? Do half the work, each, right? Answer: Again, yes. THAT is "sharing the load". An amplifier doing half the work would be equivalent to loading it with half the load, or twice the impedance, i.e. 8 ohms, vs. 4 ohms. What actually happens when bridging an amplifier, is you are now putting TWICE THE VOLTAGE across the load, which will cause the load to pull more current, twice the current, to be exact. This makes the amp produce 4 times the power of a stereo load. The additional CURRENT demand (2X the stereo current demand) is why the amplifier "sees" twice the load, i.e. half the stereo impedance. So stop saying it's "sharing the load", it isn't... it is actually doubling the load, not halving it.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Thanks to all. I got it running now. Thanks againCobra Kai Never Die