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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 01-14-2014, 09:06 PM   #1
Cayne23
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Speaker question.

I bought infinity kappa 629i 6.5 inch speakers for the front doors. They come with a crossover box used to connect the wires. I connected the wires to the crossover box. Is that a no no since the signal is crissovered from the dactory amp. Oh, hk system. The speakers sound good but at 2/3 volume with little over halfway bass, they distort. Im pissed. Should I cut off the crossover and connect the mires normally? This is pissing me off. I've used kappas before in mg other cars and I love them. They never came with thd crossover box though

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Old 01-15-2014, 08:52 AM   #2
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No thoughts?

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Old 01-15-2014, 09:31 AM   #3
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nominal speaker impedance? I believe the HK speakers are 3 Ohms. Are the Kappa's 4 Ohms? ... although that should make them less likely to distort, and quieter.
Yeah, omit the crossover. It is worth a try. I assume this crossover has tweeter connections as well? If those are not connected, maybe that is tweaking the impedance or something... I'm not too bright concerning crossovers.
But, yeah, the amp is already crossedover (if that is such a thing) so the signal to the speaker should need no further modification... let us know.
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Old 01-15-2014, 09:42 AM   #4
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They are 2 ohm impedence. Coaxial speakers so the tweeter is attached. They brag about the woven fiber woofer that wont distort, yea right. I just wonder if the signal coming from the amp is what its supposed to be, then the infinity crossover is messing with that signal. I shouldnt have to run a seperate amp for these speakers. I dont want it louder, just clearer

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Old 01-15-2014, 09:43 AM   #5
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Oh, and the infinity crossover only has a + and - on it

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Old 01-15-2014, 11:20 AM   #6
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HK amp is 3 ohm, your speakers are 2 ohm. The lower impedance causes the amp to work harder, which is probably affecting your sound quality. Ideally you want to err on the side of higher ohm speakers to protect your amp.

There is an entire forum on this site dedicated to audio. You'll get better answers there. There are many great threads with options for speakers that work with the HK system.
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Old 01-15-2014, 09:15 PM   #7
Cayne23
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Ok well after some reading, im going to cut off the infinity crossovers on my new speakers. Ive read, like I thought, the crossovered signal coming fom the hk amp and then going through another crossover is messing up the speaker. Its because the range between the two crossovers sre probably different

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Old 01-16-2014, 09:30 AM   #8
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Quote:
Originally Posted by Cayne23 View Post
They brag about the woven fiber woofer that wont distort, yea right.
FWIW, the CF cones probably are not distorting or causing harmonic distortion which is one characteristic of distortion, it is most likely the amplified signal being sent to them, or they are being underpowered.
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Old 01-16-2014, 11:00 AM   #9
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FWIW, the CF cones probably are not distorting or causing harmonic distortion which is one characteristic of distortion, it is most likely the amplified signal being sent to them, or they are being underpowered.
Agreed. AFAIK havig a couple crossovers is not going to cause distortion. Crossovers filter the signal, filtering it multiple times shouldn't introduce distortion.
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Old 01-16-2014, 12:48 PM   #10
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What is AFAIK? Lol. So you're saying that I need more power for them? ****. Idont want to have to buy an amp and I cant return them because i cut the speaker basket a little in 2 places so the factory mounting bracket would work

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Old 01-16-2014, 01:50 PM   #11
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So for kappas I need an amp? Great. I have 429i 4 inch for the rears that I havent put in yet. What wattage amp should I use?

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Old 01-16-2014, 03:19 PM   #12
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What is AFAIK? Lol. So you're saying that I need more power for them? ****. Idont want to have to buy an amp and I cant return them because i cut the speaker basket a little in 2 places so the factory mounting bracket would work
AFAIK = as far as I know

You need to read up on ohms and watts. Running a lower ohm speaker (in this case 2ohm where the amp expects 3ohm) causes the amp to output more power since the amp sees less resistance. This causes the amp to work harder, which can introduce problems.

You should have done more research before purchasing. Upgrading the HK system is not simple plug and play thanks to the 3 ohm speakers the crazy germans chose.
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Old 01-16-2014, 04:31 PM   #13
Cayne23
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I did research and read that the factory wiring will carry about 1 ohm resistance. These are true 4 ohm speakers.
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Old 01-16-2014, 04:32 PM   #14
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So adding more power to.them will make them sound better? They are 75w rms. I guess the factory amp isnt putting enough wattage

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Old 01-17-2014, 06:05 PM   #15
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the factory amp is garbage. i ran a 250x2 amp for 2 front speakers 2 tweeters and it was more than enough. nice bass and mids, highs were crisp. i ran some focal speakers

when i ran an aftermarket amp, i tapped into the speakers BEFORE it went into the HK amp and left the factory amp powering the rear speakers. crossovers were installed by the amp in the trunk for a clean install.
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Old 01-17-2014, 06:42 PM   #16
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Yea im gonna take my 300w 2 channel amp and my l o c out of my daohhters car ( it used to be mine) the sub is coming out of there too. I have a 12inch infinity sub in there. gonna connect to the + and - L and R signal from the HU before the amp. Right in the wire harness. I read the long post of every wire

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Old 01-18-2014, 09:13 AM   #17
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Then I'll connect the door woofer wires to my new amp. Just gonna cut off the wires where they come out of the factory amp and connect to my mew amp. That way I wont have to run new wires to the speakers. With the wifes approval, im gonna buy a little 4 channel 100w4 amp. She said its worth not having to hear our daughter b!tch about taking things out of her car, lol

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Old 01-19-2014, 10:33 AM   #18
Cayne23
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Crap, the infinity kappa 429i 4 inch speakers wont fit. Theyre 4 inch, but the hk speakers are really 5 1/8 inch, if youre measuring the basket. Now I gotta deal with returning these things to amazon, fun

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