Does 2 subs wired parrel to a mono amp

well they are right about the power issue, if you have a 500 watt amp and ad two speakers regardless of what they are rated at they will both get 250 watts. however what you should be concerned with is how they are wired to they amp and what impedence are the speakers. these are questions to answer when you compare your systems performance to you friends. also..reember this, itrs always better to over power a speaker than to under power it.remember...Friends Dont let friends Install, Take it to a pro..

The output of the amp gets split between the subs attatched to the channel(s). You have to really look at the specs first though to make sure you're using the right numbers, and have the right ohm load. For example, a mono amp (rated at 250 x 1 @ 2ohms) and two 4ohm SVC 100RMS 200Peak subs. The subs would be wired in parallel for a 2ohm total load at the amp. Each sub would essentially receive apx 125 watts. 250watts divided by 2 subs = 125watts per sub. This is a good match. But remember that along with planning, you also need good equipment to make a system work right. Any system with low quality equipment (I'm just saying that for a point because I have no idea what the installers in your area sell) can blow very easily regardless og the setup. Here's another example using incorrect planning this time (different amp same subs). A 2-channel amp (rated at 100 x 2 @ 2ohms, 50 x 2 @ 4ohms, and 200 x 1 @ 4ohms) and two 4ohm SVC 100RMS 200Peak subs. At first glance the RMS ratings match up (after all it is a 100 x 2 amp), but you have to look at the ohms. You only have 3 ways to hook up those subs to that amp... 1) Wire each sub to its own channel. However since they're 4ohm SVC's each channel sees a 4ohm total load. The amp only puts out 50watts per channel at 4ohms. 2) Wire both subs in parallel (+ to + and - to -) to the left channel only. So you now have a 2ohm total load at that channel for the 100x2@2ohm rating. But, since only 1 channel is being used, that 1 channel is only getting 100 watts then each sub still only gets 50 watts. 3) Here's your bridge. Wire both subs in parallel and bridge the amp (using the left - and the right + on the amp). So now your amp will produce 200watts, and with 2 subs each one gets 100watts so this is perfect right? Wrong. Because since the subs are wired in parallel the amp sees a 2ohm total load again. Based on the ratings of the amp (can be obtained from the manufacturer for different amps) it is not 2ohm stable bridged, only 4ohm bridged. You may get some sound for a while, and you'll get the 100watts per sub, but you run a strong risk of frying the amp because the impodence (ohms) was too low when bridged. It's a very common mistake. Stereo means 2, Mono means 1. There IS a difference between an amp rated at 400x1@4ohms and one rated at 400x1@2ohms. If you fry an amp and it doesn't have good protection circuitry then it can damage the subs as well. Hope that helpsSquirrel

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