Hey guys.. I just bought a new 13" sub which has a max of 700 watts and I got new speakers. Now I want to make a box and under the backseats put my old speakers and then put a sub behind the backseat.. I'm looking for an amp but I have no idea what I need.. I want to connect the old speakers, the new speakers which are in the doors, and the sub

 

I got all 4 doors and two 10s hooked up to my 600 watt amp and they sound just fine. Figure out how much each speaker and the sub take and add them together and find an amp that puts that much out.

 

How many channels is your amp?

 

Since you have one 12" subwoofer, you can either use a mono (one channel) or 2-channel amp (only if it can be bridged.) Mono amps are more geared towards subwoofer setups but bridged 2-channel amps work just as well. Most amps have previsions for both low-level and high-level inputs and here is the deal:

High-level sub amp inputs uses the speaker wires of both rear speakers as a line level input and is inferior in quality compared to low-level inputs (RCA's.) This is the only way to provide a signal IF the receiver has no RCA output for a subwoofer (using the front or rear RCA outputs on the back of the receiver usually will not work because it does not pass the low frequencies to them, only the subwoofer RCA output will.)

Low-level sub amp inputs uses two RCA's to be connected to the back of an aftermarket receiver into the SUB RCA outputs. This method will have minimal signal degradation but most OEM receivers do not have SUB RCA outputs and this is only an option when using an aftermarket receiver, unfortunately.

The RMS wattage rating on your subwoofer should only be used when shopping for an amp and not commonly confused with the PEAK wattage rating. Regardless if your subwoofer is a single or dual voice coil (SVC/DVC,) amp Ω load from the subwoofer should be wired to achieve an Ω load that the amp is capable of handling, typically .5Ω, 1Ω, 2Ω, or 4Ω. For example, if you buy a mono amp capable of 700 RMS watts at an amp 2Ω load and your subwoofer is a single voice coil at 4Ω (SVC you are stuck with what you have,) you will only receive 350 watts @ 4Ω load BUT if you have dual voice coils (DVC) at 4Ω (DVC has flexibility, especially when wiring more than one sub) it can be wired to a 2Ω amp load wired in parallel and 8Ω amp load wired in series between the two voice coils on the subwoofer.

Let me know if you have any questions, i'm bored The model number of your receiver and subwoofer or any other relevant info would help.

 

What would be the point of wiring door speaker to an amp? AFAIK my deck puts out plenty of power for the 4 door speakers.

I highly recommend a set of stand alone tweeters as well. Night and day difference (even if your door speakers have tweeters).

 

Hi

 

Your deck doesnt put out nearly enough power to power 4 good aftermarket speakers and have them running properly with the proper power going to them.

Dont be fooled your 52x4 or whatever your deck says for wattage isnt its rms value.

 

Yes it is better to over power a speaker than under power it... Actually it's pretty tough to overpower a speaker constantly enough to damage it unless you got some serious equipment

What I'm saying is if your amps a bit higher rms and adjusted properly the equipment won't ever have to work hard

 

Truth truth

 

If you're trying to wire all those speakers and your sub, buy 2 amps. Get a mono amp for your sub that's about an 800 watt or so. Then get a 4 channel amp for your speakers. Depending on how many watts all your speakers add up to, get an amp that can handle them. A good website for this is www.Sonicelectronix.com