focus st170 sub

[stewartcampbell]

Hi, the sub in my focus blew and i got another secondhand,(kenwood t10 0878 08)The original sub had just 1 voice coil but the kenwood has 2, i have just wired to one set of connectors but now it seems to be trying to play higher frequencys as well as the low so do i need to wire it differently ie http://a248.e.akamai.net/pix.crutchfield.com/ca/le... or http://a248.e.akamai.net/pix.crutchfield.com/ca/le...
problem is i dont know anything about the sub or the amp, the amp is the original option one and i cant find info on the sub, help.

[stewartcampbell]

No, think a crossover is usually bought seperately but i could be wrong.

[stewartcampbell]

Will need to get a shot of a multimeter to test the ohms of the old and new subs.

[stewartcampbell]

stuart313 said:

Thats what I cant work out, does the sub have a phono input like an active home cinema sub would or is it just a big speaker(s) that just has a straight speaker input, like a passive sub would.

no phono input just straight connectors, old sub was the same but with just one voice coil so just one set of connectors.

[stewartcampbell]

ZX10R NIN said:

You need to put one of these In Line on your RCA/Phono input to your amp this will give you greater control of your Frequencies.

http://www.ebay.co.uk/itm/Longmill-CX-001-Subwoofe...

How hard would this be to wire up, i see it needs a power feed, would this one be better http://www.ebay.co.uk/itm/Audiovox-Viper-Crossover...

[stewartcampbell]

Ok was planning going down a different route with this now as i have an old kenwood amp with lp filter so how do i wire it, what goes where.I have 2 red wires 2 black wires 1 red and white 1 black and grey and 1 white and black, the amp is rca input, thanks.

[stewartcampbell]

Why is there 2 powers and 2 grounds and how do i split the sub + and - into the rca,s to the amp.