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Bavarian Soundwerks' Mobile Electronics Forum
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Old 05-24-2011, 02:44 AM   #41
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bump!
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Old 05-24-2011, 03:51 AM   #42
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Most people that have the HK system and replaced the amp have also replaced all of their speakers. The stock HK amp becomes noticeably anemic when it has to drive higher impedance speakers.
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Old 11-15-2011, 05:37 AM   #43
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I am very happy I found this thread but I just want to confirm, I have the oem amp in my 325i. Would these work for me with stock amp?

http://www.amazon.com/Vifa-NE65W-04-.../dp/B002WE8UX6

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Old 11-15-2011, 10:40 AM   #44
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Just for clarification. Has anybody used the above mentioned speakers (2.5, 6.25 and tweeter) from PartsExpress with a stock amp?
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Old 11-15-2011, 10:42 AM   #45
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Clarification Needed - Speakers

Just for clarification. Has anybody used the above mentioned speakers (2.5, 6.25 and tweeter) from PartsExpress with a stock amp?




Quote:
Originally Posted by zhp43867 View Post
You can also use this as a midrange:

http://www.parts-express.com/pe/show...number=264-807

You have to dremel the speaker flange, but it will slide and clip into the bracket. I have this, paired with this as a tweeter:

http://www.parts-express.com/pe/show...number=264-865

And this as a woofer:

http://www.parts-express.com/pe/show...number=295-372

It sounds amazing, all of the drivers listed get extremely high marks for the range they are used in for this system. I paired it with a sub and amp and it rivals some of my incredibly expensive home audio equipment. (Sonus Faber, etc.)

BSW: I have my on.
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Old 11-15-2011, 12:39 PM   #46
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People. The HK system uses 2 Ohm loads. If you use a 4 Ohm load like most car speakers on the market, you will get a quarter of the power output. P=V/R^2. How does this relate to sound output? Sound is measured in decibels which is a log10 of this power value. That means that you will get a significant change in the power of sound output from these speakers.

The people suggesting these speakers have stated this a few times, but if you don't understand their statements you would have missed it.

Bottom line is that you CAN use higher impedance speakers with the HK amp, but you will not like the result. You should swap both the amp and speakers when you decide to go this route.

The other option is to use BSW speakers with the HK amp.

Edit: I just read through Jmanscotch's post on bf.c. Sounds like he is happy with the sound output. The stock tweeter is 3 Ohm, not 2.

Edit2: I wrote this when I was tired... P=V^2/R.

Last edited by fadeaway; 11-29-2011 at 12:02 PM.
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Old 12-15-2011, 09:21 AM   #47
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I am adding another stage to my front speaker setup with VIBE SPACE3D 2ohm speakers. I am adding them on to the OEM amp. What wiring is necessary, I have a JL 300/4 and JL 500/1 already setup. for Front threeway, back two way and 2 12" subs in trunk.

How do I wire up this system?????????? Please Help!
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Old 01-16-2012, 12:30 PM   #48
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Anyone? I got my speakers and getting flange cut, but how in the hell do I wire it all up???????????????
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Old 01-16-2012, 01:29 PM   #49
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If we use the parts express speakers that were listed above, and we later decide to by-pass or eliminate the factory amp, would we need to add a crossover?
Even better, can someone recommend amp and crossover set up that would benefit the set up?
My initial thoughts:
1) Six channel amp from JL Audio http://www.sonicelectronix.com/item_...o-XD600-6.html
2) Cross over from audio control (not sure what model/application)
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Old 01-16-2012, 03:56 PM   #50
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http://electronics.howstuffworks.com...tem-sound3.htm
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Old 02-13-2012, 04:25 PM   #51
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Any chance of a group buy?

I was wondering if BSW would consider a group buy discount on the drop in relacements and how many units it would take and what kind of discount will they offer.
I think BSW monitors this thread, hopefully they will chime in.
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Old 03-27-2012, 01:23 AM   #52
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Bought the BSW replacement speakers for me 02 coupe with H&K sound. It took about 30 minutes total and the sound is OUTSTANDING!!! It is unbelievable the difference that racing the torn speakers makes.
The car actually has a LOT more clean bass. This should be the first move in fixing/upgrading the stock sound.
I'm thrilled beyond my expectations.
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Old 05-09-2012, 10:46 PM   #53
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I just blew my front midbase on my BMW 325i e46. I have a set of HK that I got from an M3 e46.

Does anyone know if I can just drop those HK in? My system is not HK its the base system.

Is it the same impedence etc.
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Old 05-12-2012, 04:09 AM   #54
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Don't work about impedance. If they fit, try them.
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Old 05-13-2012, 07:30 AM   #55
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Quote:
Originally Posted by 325imtl View Post
I just blew my front midbase on my BMW 325i e46. I have a set of HK that I got from an M3 e46.

Does anyone know if I can just drop those HK in? My system is not HK its the base system.

Is it the same impedence etc.
Quote:
Originally Posted by ti317 View Post
Don't work about impedance. If they fit, try them.
Do pay attention to impedance, or you could blow your amplifier. Do your stock woofers have an impedance marking on them? They often do. The HK woofers are 3ohm if yours aren't marked.
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Old 05-13-2012, 08:20 PM   #56
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Quote:
Originally Posted by zhp43867 View Post
Do pay attention to impedance, or you could blow your amplifier. Do your stock woofers have an impedance marking on them? They often do. The HK woofers are 3ohm if yours aren't marked.
The difference between stock and HK is that they are 4ohm and stock is 8ohm. Replacing one pair of 8 with a pair of 4 will result in a bit more output and some strain on the amp BUT one pair in the arrangement is not going to damage your amp.
Don't take my word for it. You can go to Crutchfield and you will see they spec out the same midbass impedance for HK and non HK systems.

You can also direct your questions to BSW. I am sure they will confirm what I told you.
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Old 05-13-2012, 08:22 PM   #57
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Quote:
Originally Posted by 325imtl View Post
I just blew my front midbase on my BMW 325i e46. I have a set of HK that I got from an M3 e46.

Does anyone know if I can just drop those HK in? My system is not HK its the base system.

Is it the same impedence etc.
The only caveat is that the connectors may be different.
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Old 05-14-2012, 06:08 AM   #58
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The difference between stock and HK is that they are 4ohm and stock is 8ohm. Replacing one pair of 8 with a pair of 4 will result in a bit more output and some strain on the amp BUT one pair in the arrangement is not going to damage your amp.
Don't take my word for it. You can go to Crutchfield and you will see they spec out the same midbass impedance for HK and non HK systems.

You can also direct your questions to BSW. I am sure they will confirm what I told you.
I won't take your word for it. HK are not 4 ohm, I've got several pairs from multiple HK E46s and they all say 3ohm- at least mine do. I do believe there was some variation.

My concern is that the stock amplifier was not built with the same margin as aftermarket amplifiers are- certainly with an aftermarket amplifier the impedances we're talking about should be easily handled. But we really do not know if BMW (or Alpine or Blaupunkt or whoever) really designed any margin into the stock amplifier at all.
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Old 05-14-2012, 06:43 PM   #59
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There are 4 ohm and 3 ohm H&K depending on the year. It is obvious that you are concerned about burning out the amp and that is why I gave you a couple of sources to verify with but I guess it is easier to argue than to check the sources.
For those who may actually want to do the research, the sources are Bavarian Sound Works and Crutchfield, both have a better reputation than I do.
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Old 05-14-2012, 09:53 PM   #60
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Okay, impedance madness is breaking loose! Impedance is A/C resistance. It's measured in ohms and that may confuse some. You can't measure a speaker with an ohm-meter. If you read an ohm value, that's good you don't have a blown or open voice coil, but the value is D/C resistance and useless. Speakers are basically, electro-magnetic devices that respond to polarized or in-phase A/C sine waves pulsing to the amplifier output.

Facts: With solid state amps, you DO have to pay attention to impedance values. Solid state amps DO NOT have a designed "margin" or range you can play with. To operate a speaker in its efficiency range or max output, it MUST be impedance matched to the amps specified output. We'll say - very close to matched. I'll mention what's safe in a moment.

1) A higher ohm value speaker will not operate as efficient and sound quieter at the same gain (volume). It would not damage the amps output or cause it to run hotter.

2) A lower ohm value speaker will not operate as efficient and sound louder at the same gain. It may damage the amps outputs and cause it to run hotter.

However, 1-2 ohm difference from the factory speaker impedance specification will not create enough of a delta to cause amp damage or audibly detect.

>> That would be the margin you may safely experiment with. Remember, going up is better then down in value.

20 years pro-audio experience >> So don't mess with me!!!
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