Why do speakers have two speaker connections??

[BuCkLeY...]

Got myself a bose speaker sub thing for boot, but don't understand y it has two speaker connectors. How do I wire this up, do I wire this from one back speaker or use both rear speakers and put on different connections?

thanks

 

[Mendizmo]

Do you mean the positive & negative terminals?! Any chance of a pic?

 

[BuCkLeY...]

Do you mean the positive & negative terminals?! Any chance of a pic?

its got 2 positive terminal and two negative terminals. Was just wondering it wire these up separately to each back speaker

 

[welshname]

Sounds like it's got an inbuilt amp that you can run other speakers off.

Need a picture to confirm.

 

[Big Spence]

Its more than likely for 'bridging' mate so you can run more speakers off it, 6x9s etc

 

[Mendizmo]

Sounds a bit strange mate, pic would really help!

 

[BuCkLeY...]

Thanks for help will take picture when I get home from college later

 

[Adam G]

Are they at a 90° angle to each other?
Some are like that just for how it's fitted. So you can use one or the other if space is an issue.

 

[Mikeyjp]

+1, definitely sounds like Bridging, did you get no instructions telling you with ones to use?

just had a poke about on the net.... as far as i can tell Bose dont make subs for cars in general, they only make them for specific models where the car manufacture has fitted them as standard, so you have bought something that was not made/designed to be fitted to your car?

also confused who in their right mind would buy anything made by Bose in the 1st place

and unless its got a built in amp, you will need to go and buy one, then if you are still on a standard headunit, would need a new HU

 

[DanEdser]

Could be dual voice coil?

 

[Mikeyjp]

Could be dual voice coil?

will still need to sort an amp

 

[DanEdser]

will still need to sort an amp

Well, yeah. Bit confused as to what OP means,

For example my hertz sub is dual voice coil:

Is this what you mean by 'two speaker connections'?

Sounds like you have an amp and are confusing things.

Pic's will help us help you

 

[BuCkLeY...]

+1, definitely sounds like Bridging, did you get no instructions telling you with ones to use?

just had a poke about on the net.... as far as i can tell Bose dont make subs for cars in general, they only make them for specific models where the car manufacture has fitted them as standard, so you have bought something that was not made/designed to be fitted to your car?

also confused who in their right mind would buy anything made by Bose in the 1st place

and unless its got a built in amp, you will need to go and buy one, then if you are still on a standard headunit, would need a new HU

Its off a Mercedes haha. I tested it on one speaker and works but I wondered y it has two speaker connections. Should I just wire it up to one speaker or both bck ones

 

[Mikeyjp]

yeah try running it on one set of connections, and see how that goes, worst that can happen is that its underpowered and wont perform well

 

[BuCkLeY...]

The connections are oppostie each other. Anyone recommed wiring one back speaker or both of the speakers to it.

 

[Mikeyjp]

am i being stupid, or is it not already wired up ? remove the blue and brown cable out of the block and replace with cable running from your head unit

 

[BuCkLeY...]

am i being stupid, or is it not already wired up ? remove the blue and brown cable out of the block and replace with cable running from your head unit

Was to check if it works. Ill just try to wire it up from one speaker :/ ill know it works then haha

 

[TheEvilGiraffe]

Are you going to amp this at all or just running off one rear regular speaker output !?

Have you checked the the HU puts out 2ohm as this speaker requires...?

I would guess that the double wires is to lower the resistance as they were too tight to use large cable... Could be wrong. Scrooge ??

 

[Scrooge]

From description and pictures, looks like dual coil and you'll need to bridge it for the 4 ohms your HU will put out.

Also is that 1998 on that date code?!

 

[BuCkLeY...]

Dunno haha come off a 2003 a class

 

[Scrooge]

If that's anything like the sub that came in Dad's old merc it'll be next to useless.

I'd get a secondhand active sub if I was you and just chuck it in the boot

Also sounds like you have no amp and were planning on wiring this to the rear speaker cables? Don't do this, do the above.

 

[BuCkLeY...]

Idea was if like this then will get a propper one. N y will wiring to back speakers cause any damage

 

[TheEvilGiraffe]

Kinda like buying toy fruit to see if you like eating food....

Are you just going to get your passenger to hold it whilst you drop the bass ?

Buy one already made. Go to Halfords with £100 in your pocket and you're sorted.

:S

 

[BuCkLeY...]

I only at college still I can't afford such things yet =(

 

[Big Spence]

Wiring a sub to your head unit without going through an amp is next to pointless tbh pal, nowhere near enough power :/

 

[BuCkLeY...]

OK thanks =) I'll wait few more months

 

[DanEdser]

Sounds alot of effort for not much gain, I'd say bin and get decent speakers.

Even standard stuff that comes in more expensive cars aren't that great, especially considering that speaker looks like it's pretty old.

F*ck, I'm a college student and can afford sh*t! That's no excuse

 

[DanEdser]

Looks like you'll have to run it through an amp that can handle 2ohm, or bridge it so it runs at 4ohm (will still need to be amped to get any kind of sound out of it, a normal head unit runs at 50w peak, 12w rms, which is nothing. If you try running a 2ohm speaker off an amp/head unit that isn't designed to handle 2ohm impedance you will just fry it.

2ohm (how it is at the moment, I think):

4ohm:

 

[BuCkLeY...]

What does bridge it mean sorry I'm new to audio haha

 

[DanEdser]

Bridging just basically means you can run two subwoofers (or in this case a dual voice coil) using one amp/signal wire.

Without bridging you would just be running one channel to one speaker, or in your case one voice coil, but if you've got two, you might as well use them.

You can also bridge an amp to your running two channels to one speaker to increase power going to the speaker (more power = louder).

http://www.wikihow.com/Bridge-Subwoofers

But in your case, if you've only got that subwoofer (speaker) that you posted, you will most definitely need an amp if you want any sound to come out of it.

Guessing you don't know any specs of it, so it will be hard to advise you on what amplifier to get, but I reckon if you really wanted to use that speaker (I do not advise), a fairly low powered (cheap) 2ohm capable mono (single channel) ampifier, or 4 channel amplifier if you would like to amplify front or rear speakers.

I had an edge ED7800 4 channel amp powering my subwoofer and front speakers in my clio, was around £80 but did the job.

 

[BuCkLeY...]

Ok thanks for your help