2G speaker impedance

[96boosted]

I've been searching for hours, but I can't get a consistent answer. What exactly are the impedance of the door speakers and the dash speakers? This is with factory infinity system by the way. I see 8, 12, even dash 2 and door 8. I am throughly confused. I DO know that they're wired in parallel, so whatever they're rated, it would be half of that. Someone also suggested measuring it with a multimeter then multiply it by 1.3 to get an approximation. Well, I got 4 ohms off of the dash. So that would make the fronts (dash and door) 2ohms.... help!

-96boosted

 

[dynatos]

They are wired in parallel - but only to your factory amp which i'm sure you aren't using.

http://www.ecanfix.com/users/manualcd/gift/dsm/2g_radio_wiring.pdf

Car speakers are 4ohm, home speakers are 8 ohm. Just the way it is.
Home speakers normally have a higher impedance on the tweeter (like 12 or 16) but that is because of having a tweeter, mid, and low on one circuit.

 

[96boosted]

Thanks for clearing it up dynatos. I AM using the factory amp however.... Since they're wired in parallel, both the dash and door speakers are 8ohms then? Making them an effective 4 ohms in parallel. My dash speakers blew, instead of replacing those, I'm just going to disconnect the dash and replace the door speakers. Keeping everything else the same.

-96boosted

 

[Defiant]

The dash speakers are 12 ohm:

http://www.dsmtuners.com/forums/showthread.php?s=&threadid=102471&highlight=lexon

 

[dynatos]

and just for info: you can put a higher ohm speaker on an amp/deck/receiver than what's it's designed for - but you can't put a lower ohm speaker than what's it's designed for. You put your 2ohm sub on your home stereo receiver, and the amp inside isn't going to like you.. that's why it's not good to run more than one speaker off of a channel, because it drops the ohms down. (talking home setup). i wouldn't recommend putting 8ohm speakers in your car, but it wouldnt' damage your deck doing so. Just some info...

 

[96boosted]

This is what I mean when I was searching, someone will say 4, some will say 12. I don't know what to believe anymore. I'm guessing the door speakers are 12 too? So they are 6ohms wired in parallel?

My tweeters blew, Mitsubishi wants $55 for EACH tweeter, so I thought I can just disconnect the tweets and replace the door speakers with appropriate impedance. I don't know who's selling 6ohm car speakers, nor can I find just a 12 ohm tweeter. I'm not an audiophile, and I don't really want to replace the stock infinity amp or deck. What are my options now? I just bought a pair of 4ohms(they're all 4ohms!) kenwood door speakers, but now it looks like those speakers alone will kill the stock amp....

The other thread didn't mention the impedance of the Lexon tweeters. the ebay auction said 4ohm variable, so I don't know what that means... 4ohms would definitely fry the amp wouldn't it?

-96boosted

 

[Defiant]

Originally posted by 96boosted
This is what I mean when I was searching, someone will say 4, some will say 12. I don't know what to believe anymore.

Well, the link I gave has a picture of a Mits dash speaker with 12-ohm tattooed right on its ass, so that one's answered. That's out of a '95 Talon, so it's all I can speak of.

Your best bet is going to be to yank yours and read them.

 

[96boosted]

I took my speakers out. First of all, my tweeter doesn't look like yours very much. I don't have the capacitor, and mine has a sticker over it that says "infinity" and no impedance rating printed either. The door speaker does say 15watt and 4ohm. Perhaps the talons don't have the same audio system. I do have the "infinity premium audio", so that could be another reason.

Since I DID measure 4ohms out of the tweeter and door speaker, I am going to assume the tweeter and door speaker wired in parallel theory is false. I tried disconnecting the tweeter while the music is playing, it made absolutely no difference to how the door speaker sound. Which means they're not wired in parallel. It also seems that the factory amp sends only the highs to the tweeters, because changing the treble on the stock deck does not make much of a difference in how the door speaker sounds.

This is my theory, factory Infinity Premium System has a 6 channel output, so the tweeter does not have a filter on it. Factory system without Infinity System has 4 channels with the tweeter and door speakers wired in parallel. (from what I've read) That's the reason for the capacitor to block the lower frequencies.

WAY too many misinformation out there on the factory system. Which is why I started this thread. I'm back to where I started. At least I'm on the right track now.

-96boosted

 

[dynatos]

well, i did give you the wiring diagram for the audio system - that right there should have blown the 'wired in parallel' theory.

i also let you know car speakers are 4 ohm, which would apply to the door and rear. The wiring from the deck is only 4 channel. the factory amp sends out a crossed over frequency to the tweaters (not really "tweeters, more like a tweeker ). If you want, you can split the audio signal of the fronts, run them down to the wiring harness (if you are bypassing your amp) and put a capacitor to cross over the frequencies. I did that and it sounds great. If you are using an aftermarket deck, i would recommend not using the factory amp - it sucks.

i checked my tweeters, and they too don't have the cap and the impedance marked (infinity sound system) - but i wouldn't worry. Your amp or deck isn't going to blow up. My deck is perfectly fine with it, and since the tweeters should be higher ohms, you are realistically only running a little less than 4 ohms.

 

[96boosted]

Dynatos,
I read the diagram, but I couldn't make sense of it. Wires went to the speakers directly, then splits off to amp, then to another set of speakers, and that goes back into the deck. I was sooo confused.

I do know that car speakers are 4ohms, but everyone keeps say the stockers are strange, not following the general "rule" of car audio. So the factory deck is only 4 channels, and they're driving both door and rear speakers directly? Then the "tweekers" are driven by the amp? I'm keeping everything factory, I'm only upgrading cause the tweeters blew (DSM rule applys here) I know if you run speakers with lower impedance than the amp was designed for, it'll overload the amp. But you're saying I can just get any 4ohm tweeter to replace the stock tweeter and not worry about the amp blowing up? How are ohms ARE our tweeters anyways?

thanks for all your help!
-96boosted

 

[dynatos]

are you using, or planning on using the factory amp?

 

[96boosted]

I am using and plan to use the factory amp. I don't have plans to upgrade it until it fails.

-96boosted

 

[96boosted]

it seems there's supposed to be a 2nd part to this?

 

[dynatos]

i'm sorry it's taken me so long to reply, but anyway:

unless my amp was defective, an aftermarket head unit will out-perform the factory amp easy. either way, you dont' have to worry about blowing anything up as far as speaker inpedance goes. The difference just isn't that drastic to harm stuff.

 

[96boosted]

Ok. I'll take your word for it. I have some cheapy tweeters coming in from partsexpress.com. I'll see how it turns out.

-96boosted