amplifer and subs..

Joined: 02 Dec 2003 Location: Warner, Brisbane Nth

i got a 2 way 200 watt amplifier in the rocky currently hooked up the
6x9'sin hte back.

what difference between subwoofer and woofer??
what do the "channels" do??
can someone explain the best setup so i can have a 12" sub
(i think i need a bigger amp first?)

cheers Lucas #Evil Bat

Joined: 30 Dec 2002 Location: Adelaide

Subwoofers do low frequency sounds (say below ~100 hertz) and are usually very large speakers (over 10 inch mostly).

Woofers do frequencies from where the subwoofer stops working up to around 4000 hertz roughly. Then you can have a midrange to do the next frequency range, and then a tweeter for the highest frequencies.

The frequencies I've quoted will vary depending on the speaker design and some set ups do not use a midrange speaker at all and rely on the woofer and tweeter to cover the midrange frequency.

Channels refers to the audio signal (eg. stereo has a left and right channel; so a two channel amp is the bare minimum for amplifying a stereo signal). You can then have two more channels for the rear speakers etc.

Usually a subwoofer will have it's own seperate amplifier as they require a lot of power to produce the low frequencies. Low frequency sounds are non directional and hard to tell where they originate from- this is why you only usually see one sub woofer speaker used in a stereo set up.

For your set up you'd need to determine first if you have a line level (low level RCA plug type) output from your headunit to feed into an amp for the subwoofer. You'll only need a single channel amp, or a dual channel that can be bridged (ie. both channels can be joined to form one and give a lot more power output).

Are you totally confused now???

Posted: Fri Apr 30, 2004 3:00 pm

The dudes at any JB-Hifi will be able to explain the lot to you. The size of amp you get depends on the type of sub. For instance, running a 600watt sub off a 200 watt amplifier would be ok.

For subs.. mono block amps rock. 1 channel and heaps of power. Basically you plug it in.. wire it up and away you go. Guy at work has 2 x 600watt 12" subs in the boot of his VL.. and with his 300watt mono block amp at 1/2 gain (that is.. the signal received is dropped by 1/2 before it hits the amplifier) he can pop the boot latch from the sound pressure.

Joined: 02 Dec 2003 Location: Warner, Brisbane Nth

i kinda get it Confused

find low level RCA plug...
is this just a plug that not being used.. Question

i was thinkin on the clarion package that autobarn had on sale...
i tink it was 600watt sub, box and (200wat)amp for cheap$

so if a was to get a 600watt sub i can run it of a 200watt amp..

brisbane carsound want 300 to install sub in the rocky..
way to expensive. anyone want ot install it 4 me 4 a carton Very Happy

Joined: 27 Feb 2004 Location: Meadowbrook, Brissie

subs and amps are a piece of piss to install if you already got the cd player and speakers in, they are just as easy to install in one go. I've installed way too many car stereos ( i have too many brainless twits for mates). If you want to go all out and proper run your RCA leads away from your power leads when going from the head deck, it stops interferance....i've never bothered though as its not really noticable. I've just got a cheap as shit amp in my fourby cuz i dont think its worth shelling out all that money for something that gets bumped around and gets covered in mud, dust and sand.
any probs pm me and i might be able to help

Joined: 21 Oct 2003 Location: North East Melbourne

Spartacus wrote:

i kinda get it Confused

find low level RCA plug...
is this just a plug that not being used.. Question

i was thinkin on the clarion package that autobarn had on sale...
i tink it was 600watt sub, box and (200wat)amp for cheap$

so if a was to get a 600watt sub i can run it of a 200watt amp..

brisbane carsound want 300 to install sub in the rocky..
way to expensive. anyone want ot install it 4 me 4 a carton Very Happy

im up for one Laughing

but youd have to spend more than 300 to get down to melbourne Razz

it is quiet simple.

after you mount your sub and amp.

run RCA leads to amp.
run a + wire from the battery to amp
run a - wire to amp.
run a wire from your accessories (while you have the head unit out to put the RCA leads in just hook into the head unit acc.)
run speaker wires to your sub.

to bridge your amp use a -negative speaker output from 1 channel, and a +positive from the other. doesnt matter which way you go, its all the same signal.

MaccA

Joined: 25 Oct 2003 Location: Melbourne Australia

383FJ45 wrote:

run a + wire from the battery to amp
run a - wire to amp.

Make this particular wire a big mother .. If you have a decent amp, it will want a fair amount of juice.

Jason

Joined: 21 Oct 2003 Location: North East Melbourne

yeah. need big ones. but JB will sell you what you need.

and put a fuse on the + cable.

Joined: 02 Dec 2003 Location: Warner, Brisbane Nth

ill be back to do this when i get some more $$

stupid dog... cussing

.. allergic to fleas my donkeey.......
i swear the vet just wants to c me cussing

Joined: 03 May 2003 Location: Jimboomba

get some good brand 6 by 9's and two subs like 12 inches thats hammers man!

Posted: Thu Jun 03, 2004 9:57 pm

Is the vet any good tho Razz