How to fit a sub onto a Sony xr-4800 unit

hi, i have a sony xr-4800 head unit, and i also brought some new sony 10" explode speakers 2 put in the doors n back shelf.

i've fitted it all succesfuly and it all works, but now i wanted 2 add a subwoofer in the boot. my head unit gives me 4 speaker output @ 35watts 4ohm per speaker. it also had a remote line input on the back of the head unit.

i would like 2 hook up a 12" 300/400 watt sub to my system, can any1 help me with my problem???

also if i can do this without a amp, plz tell me, if not then its ok, as long as sum1 helps me solve my problem, with or without a amp...

thanx very much 2 any1 th@ tries 2 help, very much appricated :)

hi, thanx 4 the reply, ok, its a: RM Audio RMS530 12" Subwoofer

SPECIFICATIONS:

i hope th@ is of help, thanx once again 4 helpin me

Those 10 inch speakers... are they subs?  If this is the case you'll need at least two amps if you want to add a fifth, and some midrange speakers as well.  Even if they're full range speakers, you should get a 4 channel amp as the deck won't power them well.

no sorry, the 4 x 10" ones i have in there now r full range, i just wanted 2 add a sub 2 give me the bass and let the other 4 give me mid/high range...

its only the 1 sub i'd like 2 put in, but i've looked around on the net and they talk of RCA output on the head units??? the 1 i have (sony xr-4800) does not have any, just the 4 speaker outs i'm using, +ve switched, +ve constant, -ve/ground, ilumination (not in use), arial and remote........

i cant figuer out how i would get a sound input from my head unit to 'a amp' sutable for my sub.

i'm very sorry lol, when i say 4 x 10" i mean 4 speakers th@ r 10", 1 in each of the front doors and 2 on the back shelf..... so really i could say take the rear Left +ve/-ve as the left RCA to the amp and take the rear right +ve/-ve as the right RCA to the amp???

and then the amp will feed the sound out 2 the sub??? i was thinking of th@, but the out put on each channle of the head unit is 35watts @ 4ohms, will th@ matter??

yes the output definitely matters, and you shouldn't run subs with a deck.  Those 10" speakers, even though they are full-range, should be powered by an amp.  Check the power handing of them and see what it says. 

Connection-wise, that's exactly what you would do to hook up a LOC.  One side of the LOC has speaker wire and the other has RCA's.  The power from your deck shouldn't be a problem.  Something else you can consider is getting an amp with speaker-level inputs.  Then you can take the speaker-wire and plug it directly into the amp, saving you the trouble of a LOC.

ok cool, did  u have any amps in mind?? on the cheap range

the speakers in there now r sony explode 1's, the RMS is 25watts and the peak is 140watts

sony explode 1's...... hmmm.... never heard of them.  I did a search and couldn't find anything, so I can't help you there.  Those power ratings seem a bit weird for a speaker as well since the rms should be roughly half of the peak.

As far as which amps to recommend, I can't really say because I have no idea what is sold over in the U.K.

sorry, they r:    5 inch diameter. Rated Power each 25W, PEAK Power each 140W lol and theres me thinkin they where 10inch

well th@s them, i'm just lookin 4 a model number 4 u but i thinkin the amp i must get had 2 be 6 channel if i want 2 power all the speakers, e.g the above 4 and the sub (bridge 2 channels for the sub) or a 4 channel to power the 2 rear speakers and the sub (again bridge 2 channels for the sub)

plz tell me if i'm wrong, th@s just my thinkin from what i've read up on, and the watts per channel is another problem 4 me

ok, so once again you've lead me astray.  Those 5" speakers can be run from your deck, so all you need is one amp for the sub.  You still need to find out if you can just splice into the rear outputs or if you'll need to use them entirely for the LOC.  My guess is that you would experience some signal loss if you did splice and used the rear deck outputs for the LOC and the 5" speakers. 

Something else to consider is your deck.  If it doesn't have RCA outs it probably doesn't have a remote turn-on.  This can be overcome by splicing into an accessory wire from your car and running that to the amp's remote input.

hey ppl i still need help here, plz if ne1 can help me, plz post up on here

thank you