....... By using a home cinema subwoofer!

Requires no power from the battery etc, all I did was disconnect the rear speakers, as they are pap way back there, and use the wiring to connect up the passive sub.

Ok its not going to sound as good as a proper set up, but what is a bonus is that I havn't had to mess about with lots of wires, and it weighs next to nothing too! It is slim too so doesnt take up much room.

It makes the sound so much more meaningful now, with nice deep bass and no rattles from the front doors!

Enjoy, Si

is it pre amped? i know from years ago trying to run a huge bass bin from standard speaker connections from the radio can eventually blow the stereo, just a thought.

Looks good and does not take up too much space.

Davy

No its not pre amped, just passive from whatever is running it i.e, headunit.

I will keep a check and see what sort of power the sub requies, I dont want my nice Alpine headunit getting ruined!

Cheers, Si.

EDIT - Just checked the sub rating, and its 4 ohms, 80w RMS.

Is it filtering the low signal only or is there highs going in as well??????

Just buy a real one imo !!!

Up to you though.

You'll proberbly blow the amp i the HU, the resistance of the home cinema sub will be less than 8 ohms, so basically you are almost but not quiet short circuiting the output stage of the HU.

Ive got a proper sub etc in the garage, but this was kind of a test to see what it would sound like, and tbh I cant be bothered to pull my car apart when this will do the job for now.

Its just playing the lows of what it can handle so 25hz - 180hz, no filter fitted.

Si

Car speakers are 4 ohms!

I remember when I was 17 and just learnt to drive, I put my old house speakers in the boot of my car and wired them up, as I thought it was cool

Hopefully it won't blow your headunit

I remember when I was 17 and just learnt to drive, I put my old house speakers in the boot of my car and wired them up, as I thought it was cool

Hopefully it won't blow your headunit

i did this too, the speakers sat behind the front sites in the rear footwells, certainly sounded better, but dont think did much good to the head unit.

Thanks for your advice, i can understand that house speakers are normally 6 or 8ohms, but this one definately says 4, so I will leave it be and hope it will be alright.

Si

IIRC Home subs are generally 4 ohms but have an amp to drive them.

If your head unit is something like 4*40W if you turn it up too much you will fry the head unit's amp circuit.

most decent headunits have overload protection these days anyway

IIRC Home subs are generally 4 ohms but have an amp to drive them.

If your head unit is something like 4*40W if you turn it up too much you will fry the head unit's amp circuit.

If the sub is 4 ohms and he is running it from one channel on the deck, then it won't blow the head unit up through impedance problems, as car speakers are nominally 4 ohms.

If however he has somehow connected right and left channels to the 4 ohm sub then there may be problems ahead depending on how it it wired.

Still, all things considered it isn't a good way to run a sub.

Asking for trouble..

on a decent modern alpine unit it will probably run right for a year or 2... just dont max out the h/u and bear in mind if you are bridging the 2 channels you will drop the impedance further. does your model of h/u support bridging.. some do...

Im just running the sub off one rear channel as having rear speakers does nothing for the soundstage, so the other is just disconnected.

Until I get my new components and amp all sorted for the doors, this setup sounds good and is easily removable for a short term fix for now, and miles better than the standard setup.

Si

you might want to get a dummy load for the other channel, doesnt do the amp any good leaving it with no load when its turned up