speakers/tweeters question

[Cb7_Qc]

hey, i got some tweeters from a bmw e46, with the housing and everything, would fit nicely in front of the door handle on my front trim panel, but i really am ignorant about eletricity...
i noticed they are 4 ohms, while all my other speakers are 9 ohms, what does that changes, what does that mean, can i still plug them as is, is there a way to convert them to 9 ohms, what are the ohms???
so many questions, hope someone can explain all this to me!

[sonikaccord]

Ohms is the unit of electrical resistance, google can help you there.
Yes there is a way to convert it, but you don't want to find/build an impedance matching transformer for that.

What head unit are you running?

Tweeters need to be "crossed over" which means (loosely speaking) that they must avoid playing lower frequencies below 3-4 kHz is a good start. I'm not sure if that tweeter has a built in crossover so be careful otherwise you'll blow it fast.

To hook them up, you connect the positive of the tweeter to the positive of the woofer and do the same for the negative.

Check for the crossover!!! it should be a capacitor (google again) somewhere near it, or you could post a pic here. I think that's a good start

[Cb7_Qc]

i think they do have a crossover built in since in the BMW they are plugged directly in a second connector thats on the door speaker itself..
i have a pioneer head unit, i dont know the model, im not a ''sound'' guy...i listen to metal...so i dont want a subwoofer or anything (something less to attract thieves lol) i find i have enough bass for my needs right now. but i would like to plug the tweeters for a more ''surround'' sound, i find the door speakers are positionned too low and my leg is blocking the sound of the left one lol and id like to get better rear speakers and amplify them a bit. ive heard some awsome sound from such a set up the guy didnt have a sub and the bass was just perfect.

my main concern was more about the ohms difference between these tweeters and my current speakers, so basically if i plugg those with 4 ohms i doesnt change much if the rest of the system is 9 ohms? theyr not gonna blow faster or anything?

[wildBill83]

Where did you get 9ohm speakers?

[sonikaccord]

I believe those pioneers may be stable to 2 ohms, when you connect the tweeter the headunit will see a total load of 3 ohms so you should be good, in theory of course.

That connector could go to an external xover or a dedicated tweeter amp. It's hard to say.

Yes alot of sound is going to your ankles but just adding a tweeter may or may not help. There are other things to consider, but for now try it and see how you like it. If you do then that's great, if not, we can help find you something that's more satisfying.

[Cb7_Qc]

Where did you get 9ohm speakers?

I work in a bmw dealer as a bodyman...got them of a e46 used door from the jy that we received for a job...reinstalled the owners trim so i kept the one from the jy

And since they are original bmw speakers, they are harman/kardon but theyr are not standard size thats why i wanted to know if they would fit/run fine on my system before cutting a hole in my door trim...i dont wanna have to change them anytime soon...

[kapone]

hey, i got some tweeters from a bmw e46, with the housing and everything, would fit nicely in front of the door handle on my front trim panel, but i really am ignorant about eletricity...
i noticed they are 4 ohms, while all my other speakers are 9 ohms, what does that changes, what does that mean, can i still plug them as is, is there a way to convert them to 9 ohms, what are the ohms???
so many questions, hope someone can explain all this to me!

im confused... the tweeters are 4 ohm correct?

the "other" speakers you speak of, are they already installed in your car to the pioneer deck?
or are you trying to install the 9 ohm speakers also ?

and were did you get 9 ohm speakers...? off the BMW also.?

Answering these questions can help us help you...

[sonikaccord]

im confused... the tweeters are 4 ohm correct?

hey, i got some tweeters from a bmw e46....
i noticed they are 4 ohms,

the "other" speakers you speak of, are they already installed in your car to the pioneer deck?
or are you trying to install the 9 ohm speakers also ?

theyr are not standard size thats why i wanted to know if they would fit/run fine on my system before cutting a hole in my door trim

and were did you get 9 ohm speakers...? off the BMW also.?

I work in a bmw dealer as a bodyman...got them of a e46 used door from the jy that we received for a job...reinstalled the owners trim so i kept the one from the jy

Sorry, I was bored

[Cb7_Qc]

lolllll nice quoting skills

pioneer deck and some xplod front speakers with rear no names 6x9 speakers with a huge ass magnet that i got for 20$ and play real great! everything is standars 4ohms like every speaker u buy for cars, only those bmw tweeters are 9ohms because germans do thing differently i guess...
i just want to know if they will blow or play bad if i install them or if the ohms difference doesnt matter thats all...i dont know what ohms do in the speaker world i suck and electricity stuff.
can i plug those tweeters successfully yes or no? if yes i plug them straight up like that or do i need to put a resistance or something on the wires first?
i think i cant be more simple than that

[sonikaccord]

Yes, they should work.
keyword: should

Try it and see what happens. If it sounds wrong, chances are it is.

[Soufkackicustom]

Yes they will work. No issues. A lot of the super tweeters people add are 8 ohm.

If you really want 100% hook them up temp. Run some wire off the rear speakers and leave them in the trunk, hooked up playing for a few weeks

[kapone]

lolllll nice quoting skills

pioneer deck and some xplod front speakers with rear no names 6x9 speakers with a huge ass magnet that i got for 20$ and play real great! everything is standars 4ohms like every speaker u buy for cars, only those bmw tweeters are 9ohms because germans do thing differently i guess...
i just want to know if they will blow or play bad if i install them or if the ohms difference doesnt matter thats all...i dont know what ohms do in the speaker world i suck and electricity stuff.
can i plug those tweeters successfully yes or no? if yes i plug them straight up like that or do i need to put a resistance or something on the wires first?
i think i cant be more simple than that

ok ... they will work, sort off.

If you wire them to the existing speakers in your doors the 9 ohms running parallel to the 4 ohm will give you a 6-7 ohm load at the deck. since its a 4 ohm deck whats going to happen is going to get less power to both the speakers on each channel.

So not only are you adding another speaker that is going to need power for it to play, your going to be requesting less power from the deck because of the load (ohms) ...

best bet get a cheep set of 4 ohm tweets at the flee market for 10 bucks that will work better and still be loud...

[Soufkackicustom]

And you will tell no difference between the flea market tweeters and the BMW ones. The head unit will still unleash it's 20 watts of fury. No diffrent then putting a head unit and amp bypass in a Hk equipped BMW. Works just fine

[sonikaccord]

ok ... they will work, sort off.

If you wire them to the existing speakers in your doors the 9 ohms running parallel to the 4 ohm will give you a 6-7 ohm load at the deck. since its a 4 ohm deck whats going to happen is going to get less power to both the speakers on each channel.

So not only are you adding another speaker that is going to need power for it to play, your going to be requesting less power from the deck because of the load (ohms) ...

best bet get a cheep set of 4 ohm tweets at the flee market for 10 bucks that will work better and still be loud...

Resistances in parallel are always less than the smallest resistance.

Also loads don't 'ask' for power, the amp just tries to deliver what it's told. If it can't handle the load, it'll simply burn it's outputs up...maybe the power supply too.

(9*4)/(9+4)= 3 ohms

I believe his head unit is 2 ohm stable, that's up to the OP to look up.

[kapone]

Resistances in parallel are always less than the smallest resistance.

Also loads don't 'ask' for power, the amp just tries to deliver what it's told. If it can't handle the load, it'll simply burn it's outputs up...maybe the power supply too.

(9*4)/(9+4)= 3 ohms

I believe his head unit is 2 ohm stable, that's up to the OP to look up.

I'm really not trying to argue (As i hate doing that in forums) but I my self have a 8 ohm speaker wired in parallel with a 4 ohm speaker and my multi-meter states its a 6 ohm load....

and yes the load determines the amount of power the amp is going to give said speaker....

If an amp is rated at 100 watts at 4 ohms if you connect an 8 ohm speaker to it it will give you 50 watts, if you connect a 16 ohm speaker it will give you 25 watts ect.... that's what i meant by "ask".