Can I Run 2 Sets Of Component Speakers And 2 Coaxial Speakers On A 4 Channel Amp

Can i use a 4 channel amp with 2 speakers and 2 subs in my car?

For starters, there aren't any 400w 6x9's. Ridiculous power ratings like that are peak/max ratings aren't "ratings" at all. They're virtually random numbers meant to look impressive to buyers that don't understand just how little they mean.
POWERFUL 6x9's are 100w rms. Most are in the 50-80w rms range.

A 4 channel amp works well for running a pair of speakers plus a subwoofer, but if you try to run a pair they're not going to get much power.
You'd save a lot of space, probably get better sound quality and nearly the same loudness using just a single sub and giving it plenty of power.

If you're set on two subs - ideally you'd have a 2 ch amp for the 6x9's and a separate mono/subwoofer amp to run the subs (yes, a mono amp can run more than one sub).

2 channel amp for 4 speakers and 2 tweeters?

Moley, I appreciate you are experienced but your solution is far from suitable...

If hooked up with the tweeters in series with the paralleled speakers, then the 4 ohm tweeters will get 4 times as much power as each speaker**

Also, if the tweeters have a series capacitor as a crossover, then all of the speakers will be highpassed by the capacitor. You also lower the crossover frequency (by changing the highpassed impedance) and risk blowing your tweeters. Far from ideal.

To answer the original question, you should parallel a pair of speakers with your tweeters. Then put this combination in series with the other pair of speakers,

So hook tweeter positive - positive and negative - negative to one speaker, and then hook the positives of these two to the positive of the amp. Then hook the positive of the 3rd speaker to the negatives of the other 2. Finally hook the negative of the 3rd speaker to the negative of the amplifier.




**With your config lets presume a 10 volt source for the speakers. Then using ohms law we can see work out that the speaker chain will draw 1.6 amps. The voltage drop across the tweeter will be about 6.66 volts so therefore each speaker will have 3.33 volts across it.

So the wattage for the tweeter will be: 6.66V x 1.6A = 10.656 Watts.

Because the two speakers are in parallel they share the current so instead I multiply by 0.8A.

The wattage for each speaker will be: 3.33V x 0.8A = 2.664 Watts per speaker.

Sorry for the overly lengthy explanation.


Edit: KaeZoo got in before me and is simpler lol but I didn't see it beforehand :)

Is it possible to wire 4 speakers to a 2 channel amp?

yes, two 4 ohm speakers in parallel will net a 2 ohm load.

So say the amp is 50x2 at 4, 80x2 at 2. Obviously a pair of speakers would get 50w each speaker, 2 pairs will get 40w each speaker.

Run it so your left speakers are on one channel with the rights on the other.

Justin - just for clarification - this isn't bridging. It's just wiring speakers in parallel. Bridging involves combining 2 amplifier channels to drive one load which should not be done in this case.


Edit: (in response to david)

"6X9 (waist of time and money)..."
6x9's are fine for the average listener. Compared to a high quality component set sure, they don't sound very good, but they are perfectly adequate to meet most people's needs.

"and yes you will be dropping to two Ohms which most 2 Channel amps can do...
BUT remember, while dropping Ohms is GREAT to get a sub pounding you loose quality when you go this."
THD is increased ever so slightly from something completely inaudible to something nearly as inaudible. This degree of distortion only matters to oscilloscopes, not ears.
Damping Factor is also cut in half but will still be well within acceptable limits.

"also you should only drop ohms on two identical speakers (small things like this make the stuff last MUCH longer)"
The only thing put under any stress in this situation is the amp since it's running at a lower impedance. Whether the speakers are identical or not is not a factor in how long things will last. Amps simply deliver voltage to a load up until they run out of current. Whether the amp is connected to a 2 ohm resistor or a 2 ohm (nominal) combination of speakers -- it should run fine.

"so to solve your problem... can the 6x9 get a 10" run it off the amp and your splits off the deck.
when you have the cash, get a mono 4 your sub and use the 2channel your splits."
Obviously this would be the best option, but, Chaz, running your amp at 2 ohms to get a little power to your speakers is a perfectly effective way to start building some sound in your car.

Can i power 4 speakers + 1 sub with a 4 channel amp?

Yes, it actually works fairly well and is easily the most economical way to power a 4 spkr/1 sub set up.
I set up my first two systems the same way.
It helps to have a good quality amp since it will be running with all channels at their lowest impedance. Cheaper amps may have over-heating issues if they're played loud for an extended period of time.

The ONLY drawback is you can't fade from your front to rear speakers. They will always play at the same level with the same settings (gain/crossover). You will be able to balance left/right.

You need to make sure the 4 speakers are 4 ohms or higher. You'll connect both left speakers to one of the front channels (typically channel 1, or A), and both rights to the other front channel. That will create a 2 ohm stereo operation.
When you look at amp specs you'll see something such as:
RMS Power @ 4 ohms stereo - 50 x 4
RMS Power @ 2 ohms stereo - 75 x 4

That means if you connect one 4 ohm speaker to each channel (2 channels in this case) they will each see 50w, but if you connect two 4 ohm speakers to each channel in parallel, resulting in a 2 ohm load each speaker sees ~37.5w.

That will leave the rear two channels to bridge powering the subwoofer. The 2 ohm stereo power will be combined to provide 150w. The subwoofer needs to be a single voice coil 4 ohm sub, or a dual voice coil 2 ohm sub with the coils wire in series for 4 ohms.

What kicker 2 channel amp would be best to run 2 6x9 and 2 old fosgate audiophiles?

ok, so you want to power the front and rear speakers i take it?
but if this is the case. then why not just buy a 4 channel amp, because by doing 4 speakers on a 2 channel amp there will be no way to set the fade levels.

so why not get a 4 channel amp, and why not try another brand if money is a problem. there are some pretty decent amps that run pretty cheap..

or you could just buy a 5 channel amp that would be capable of running front speakers, back speakers, and subs. the kicker zx700.5 is a 5 channel amp, this amp runs 70watts rms to each speaker, and 210watts to 1 sub or 420 to 2 subs.

Can I hookup 8 speakers in a 4 channel amp (rockford fosgate p8004) without breaking anything? If so, how?

The speaker pairs total watts RMS (for each channel) must match or be higher than the watts RMS of each channel @ 2ohms if you wire the speakers in parallel http://i81.photobucket.com/albums/j230/sparky3489/PARALLEL.jpg to each channel. This is because the speaker pairs together will be 2 ohms and will require to be al least half the power for each speaker of each channel on the amp at 2 ohms. So if the amp is 200 watts RMS @ 2 ohms per channel, then each speaker must be 100 watts RMS @ 4 ohms.


If you go series http://i81.photobucket.com/albums/j230/sparky3489/SERIES.jpg of the speaker pairs on each channel, each speaker can be 1/4 or higher than the watts RMS of each channel on the amp @ 4 ohms. This is because the speaker pairs together will be 8 ohms and will require to be at least 1/4 the power for each speaker of each channel on the amp. So if the amp is 100 watts RMS @ 4 ohms per channel, then each speaker must be at least 25 watts RMS @ 4 ohms since the amp will push 50 watts RMS @ 8 ohms.

For more power (200 watts RMS per channel), the first option is better but may cause the amp to run hot. Option two is less power (50 watts RMS per channel) but the amp runs cooler.

You might be better off to get two 4-channel amps.

Hooking up a component system to my amplifier.?

The crossovers hava a pair of inputs to use for bi-amping.

To use the output from a single channel of a full-range amp, make sure that the "bi-amp" switch under the cover is set to OFF and connect the input (output from the amp) to "TWT" in ("the WFR" input will not be used). Connect the woofer and tweeter to their respective outputs. Set the tweeter attenuation switch to the desired position -2dB, 0dB, or +2dB. Set the Axis ON-OFF for best sound depending on the tweeter mounting location.

The full connection diagram is shown on page 4 of your manual. If you did not get a manual, you can download it here: Scroll down and under "Answer", right click "Owner's Manual" for the T1652-S.

http://www.rockfordfosgate.com/scripts/r...