More Questions Regarding Sound System

[wlsmith]

My friend is selling me 2 x Kenwood 12" Subs in a carpeted box for £150, quite a good deal I think. He said he can also add a Kenwood 2 Ch 800W Amp so in total I would pay £250 for the lot.

However, couple of issues regarding this, I also have Kenwood 7x10 320W, and was wondering if i would need a more powerful amp with more channels to run the whole system inc 2 subs and a pair of 7 x 10's if so what amp would you recommend for this job? and also can i use the standard headunit for this if i buy a special lead like an RCA convertor and run the new amp off this?

[breezer]

jus leave the 7by10s connected to head unit! buy RCA converter (follow my instructions in how to section) and wire amp up!

nuff sed

[wlsmith]

If i leave the 7 x 10s connected to the head unit... will they automatically be "amped" up due to the amp being used instead of the standard amp headunit?

[wlsmith]

He won't sell them now Breezer, so what shall I do, I am going to purchase either these:

Kenwood 640W 4 Channel Amplifier,

Kenwood 12" Sub (only one now!)

Acoustic MDF Bass Box

However, im stuck on which amp to get... I want a kenwood one, however, theres an 800W, or a 1000W one in my price range however these are both 2 chanels....What im not sure about is how many channels do i need... I was thinking if i got 4 channels I can bridge 2 channels to the 7 x 10's and 2 to the single sub if this is possible giving each 320W through it... would this be a good idea?

Also if i just got a 2 channel amp say 1000W, could i run 500W through the sub and 500W through the 7 x 10s but not play it as loud so they dont get damaged... help me im so confused!

[Moffmo]

Can i just say that max power means :censor: all, you need to try and match the RMS watts on the amp and sub, So if you get a 150w RMS Sub - you need to try and get a 150w RMS Amp - or a 160w RMS amp!

Cheers

matt

[wlsmith]

Ok, well the Kenwood 12" Sub is 700W Peak power, my 7 x 10 are 320W, not sure if this is each, so what will I need 1020W? or shall I just order a Kenwood 800W 2 channel amp and bridge the channels and run the single sub off it? and leave the 7 x 10s connected up to the headunit? as they will automatically get "Amped" up due to the aftermarket amp being used won't they instead of the factory head unit amp?

[wlsmith]

Or I can order a Kenwood 1000W Mono Amp im not sure about Mono though will it be good or will i only get sound coming through one side of the car?

[wlsmith]

I've got Daddy's credit card here....good old man!! so i need to know as I want to order em up!

[Moffmo]

You need to find out the RMS of everything, not the peak power, thats just BS - its designed to trick people into thinking they are powerful

[wlsmith]

ok will post back in a minute with the RMS power findings

[wlsmith]

Can't find the RMS anywhere on any of the sites... not even the kenwood site lol

[breezer]

RMS of the kenwood sub of 700w max will be around 100-150w RMS

[wlsmith]

ok so what amp do i want for it? the kenwood 1000W mono, 800W 2 channel or 640W 4 channel? cus i was thinking if i got the 4 channel 1 i could then hook my 7 x 10 up to it but would this be beneficial or not at all~?

[breezer]

from what i was told, people usually buy a seperate amp to power a sub and a one to power Speakers.

id say, try both ways (wiring Speakers to amp to see if betta then headunit) the amp will get hotter quicker if you wire a sub and Speakers to it!!

[wlsmith]

well, i want to run it all off 1 amp, so im guessing i would want the 640W one?

[wlsmith]

i dont really understand what i need whether 4 channels,2 channels or what, people say bridging the sub makes it a lot better thats why i was going to bridge it and still have 2 channels free

[breezer]

well the 640w amp will be around 100w RMS, so get a higher one! the 800w one will have an RMS of around 300w RMS. Get an amp with a high MAX RMS as they will have a higher RMS.

[wlsmith]

so do you think it would be a safer option if i get the 640W, as its got more channels, cus if i got the 800W 2 channel amp and sub, i may not like just having the 2 channels and the Speakers off the headunit

[wlsmith]

ok.. so saying if i bought the 1000W 2 channel amp, would i be able to run the sub off 1 channel and my Speakers off the other channel? and would it sound ok

[breezer]

yup!

[wlsmith]

ok then, ill get the 800W or 1000W 2 channel, thanks mate.. cleared things up a bit now :P