How does this system sound to you?

Question

60w x 4 (4 ohms) amp bridged with 10'' 120 watt rms sub (4ohms) with channel 3 hooked up to front right and rear right (4 ohms) speakers with 50 and 40 watts rms respectivey and 4th channel like 3rd channel but on the left side of my '97 civic.

OK, now the important questions you must answer!!!!

1.

Will bridging the amp cause it to became an 8 ohm bridge and hence not be compatibe with my 4 ohm sub?

2.

I know the left side speakers (as the right side speakers) will become a 2 ohms due to the parae willing, but will it still be compatibe to connect it to one channe even though the amp says each channel is for 4 ohms only.

Answer 1

the speakers determine the final ohm rating...not the amp.

wiring 2 4ohm speakers in parallel will give the amp 2ohms. wiring them in series will give the amp an 8ohm load.

if the amp says its is stable to 2ohm per channel/4ohm per channel bridged. this mean you can not go below this without causing damage to the amp. you can run as many speakers you want off a single or bridged channel as long as you don't go below the rating.

example: if it say it does 200w at 2 ohm and you have 2 4ohm speakers...wiring them parallel to a 2ohm load...the amp will give them each 100w.

if your amp can be bridged and still be 2ohm stable, your ok on the sub side because the amp will do 2ohm and that will give you the 120w...60 to each sub.

you are also ok with the speaker side if the amp can handle 2ohm without being bridged....60 @ 2ohm will get you 120w...split between 2 speakers...so each speaker will get 60w.

every time you cut the ohm in half you double the power and visa versa.

Answer 2

99% sure that bridging  should  only  affect line  level  INPUT left  and  right signal not  output in  any way.   it  has  the  effect  of  a  y  adapter.  

this  is  not something  that  you  should  be  tackling  without  at  least the  basic electronic  knowledge  and if  i  know  it,  then it  has to  be  basic.

pay  a  pro the  hundred  buks  and  save  500 bucks  worth  of  equipment

messing  with  speaker  wiring  can  destroy  your  whole  system .  impedence  of  amps  is  all  nice  in theory  but  some  amps  are  less  stable  at  2  ohms

  even  if  the  numbers  say  you  can  do it.

Answer 3

This will work fine...most likely the amp is probably 2 ohm stable in multi-channel mode.Which means you can parallel the front left speaker with the rear left speaker.IF the speakers are 4 ohms each...this will give you a resistance of 2 ohms.The same applies to the right side.

Now,when you bridge the amp ,the ohm stability will change.Now you must not put any sub thats below 4 ohms on the bridged channels.Basically you can run a single 4 ohm woofer on the bridged channels or two 2 ohm subs in series or two 8 ohm subs in parallel.Here is some heplful links

http://www.rockford-fosgate.com/rftech/r...

JUST A NOTE...DOUBLE CHECK AND SEE IF THE AMP IS CAPABLE OF A 2 OHM LOAD.NOT ALL AMPS LABEL THIS ON THE AMP.YOU MIGHT HAVE TO LOOK UP THE MODEL.WHAT KIND OF AMP IS IT?