[tmac01]

Well in my situation I should add. I have the SWS 8 Xi and I'm also running a 10" jL W3 in the trunk and I just have no mid bass even with the MS-8 eq. I can't find Jehnerts or the Kickers and I just want my mid-bass back and I have read many on this forum who love the hi fi 8" mid bass oem speskers. Any suggestions or advice is gratefully appreciated.


My set up:

CDT CL 42
Infinity reference 4" center
SWS Xi 8"
OEM rears
JL W3 10"
JL XD 600/6
JL JX-250/1
Technic Harness

2008 328i Original Hi-Fi system

[taibanl]

Originally Posted by tmac01

Well in my situation I should add. I have the SWS 8 Xi and I'm also running a 10" jL W3 in the trunk and I just have no mid bass even with the MS-8 eq. I can't find Jehnerts or the Kickers and I just want my mid-bass back and I have read many on this forum who love the hi fi 8" mid bass oem speskers. Any suggestions or advice is gratefully appreciated.


My set up:

CDT CL 42
Infinity reference 4" center
SWS Xi 8"
OEM rears
JL W3 10"
JL XD 600/6
JL X-250
Technic Harness

2008 328i Original Hi-Fi system

Probably OEM midbasses will deliver better midbass than the sws....

However, you are probably experience most of your weak midbass due to running a subwoofer (corner loaded?)

The problem is that the ms-8 sweeps the sub well beyond its crossed frequency range. Even though you may have the sub crossed over at say 80hz, on the initial tuning sweep it listens for sound as high up as 150-200hz, which will not penetrate the rear seats...

The solution is to do the kaigoss mod. Many other posts on this.

Edit i anot familiar twith the x-250 but you wil l need to use y adapterrs on the midbass output channels from ms-8 and then run the midbass outputs as inputs to the x-250 AND the 600/6. Cnfigur the front low from 20-200hz and do no tell the ms-8 you have a sub

[Dannyboy]

Yeah not a fan of the SWS for midbass.

[tmac01]

Taibanl,
should I even be running the sub through the MS-8 ? The JL JX-250 is a mono amp that is just running the sub only. So I just search for Kaigoss MS-8 mod ? Thank you very much......

[kaigoss69]

Try this first if your amp allows it:

http://www.e90post.com/forums/showthread.php?t=724447

Sorry, can't post link due to limitations in iPhone app.

[tmac01]

Thanks Kaigoss I've been looking for this thread all day. I have a simple question are you using channel 8 of your ms 8 for your sub ? Thanks

[kaigoss69]

Originally Posted by tmac01

Thanks Kaigoss I've been looking for this thread all day. I have a simple question are you using channel 8 of your ms 8 for your sub ? Thanks

Yes but it does not matter what channel!

[taibanl]

Originally Posted by kaigoss69

Yes but it does not matter what channel!

But...be aware kaigoss has his sub firing through (directly) the ski pass. If you are corner loaded, you must do the kaigoss mod.

[tmac01]

Taibanl,
My sub is in a custom enclosure with the sub facing away from the backseat. I'm still confused on the Kaigoss mod is that the thread you sent me Kaigoss ?

[kaigoss69]

Originally Posted by tmac01

Taibanl,
My sub is in a custom enclosure with the sub facing away from the backseat. I'm still confused on the Kaigoss mod is that the thread you sent me Kaigoss ?

They are two separate mods. The one I sent you will give you more midbass, at least with normal midbass woofers, not sure if SWS-8 is capable of good midbass though...definitely try it!

The other mod ("kaigoss" mod) is completely different. Basically, you need to configure the MS-8 without a sub, and let the midbass play all the way down to 20Hz. Then, you split the sub signal from the midbass signal externally with the help of your amp crossovers. So the MS-8 is sending 20 - 150Hz to your midbass amp, then split the signal at the amp if you are using the same amp for mid-bass and sub. If not, you can use the line-out from your mid-bass amp and connect it to your sub amp. If that is not an option, use RCA y-splitters.

[kaigoss69]

Originally Posted by tmac01

Taibanl,
My sub is in a custom enclosure with the sub facing away from the backseat. I'm still confused on the Kaigoss mod is that the thread you sent me Kaigoss ?

They are two separate mods. The one I sent you will give you more midbass, at least with normal midbass woofers, not sure if SWS-8 is capable of good midbass though...definitely try it!

The other mod ("kaigoss" mod) is completely different. Basically, you need to configure the MS-8 without a sub, and let the midbass play all the way down to 20Hz. Then, you split the sub signal from the midbass signal externally with the help of your amp crossovers. So the MS-8 is sending 20 - 150Hz to your midbass amp, then split the signal at the amp if you are using the same amp for mid-bass and sub. If not, you can use the line-out from your mid-bass amp and connect it to your sub amp. If that is not an option, use RCA y-splitters.

[tmac01]

Kaigoss I'm using a separate amp for my sub. I'm using the jl XD 600/6 for fronts, underseat subs and rears. I'm using the ms 8 amp just for my center channel so I'm thinking I have to configure the ms 8 without a subs?

[kaigoss69]

Originally Posted by tmac01

Kaigoss I'm using a separate amp for my sub. I'm using the jl XD 600/6 for fronts, underseat subs and rears. I'm using the ms 8 amp just for my center channel so I'm thinking I have to configure the ms 8 without a subs?

You don't have to do that, but the mod requires you to do it that way. Like I said try the other trick first and see how much the midbass improves.

[tmac01]

Will do and I'll report back ! Thank you so much .....

[tmac01]

Looks like the amp I'm using for my sub won't work : (

[taibanl]

Sure it will!

MS-8 "Front Low" (L+R) channels to the sub amp. Pre-outs then back to the midbass input channels of the 600/6. Set the MS-8 front low to 150hz, subsonic to 20hz.

HP the Midbass channels at 80hz/12db and up on 600/6, sub on 80hz/12db down on the sub amp.

[taibanl]

Oh, and zero out the bass boost until after you have tuned Ms-8, then adjust to taste if you like.

[bmw325i]

Originally Posted by taibanl

Sure it will!

MS-8 "Front Low" (L+R) channels to the sub amp. Pre-outs then back to the midbass input channels of the 600/6. Set the MS-8 front low to 150hz, subsonic to 20hz.

HP the Midbass channels at 80hz/12db and up on 600/6, sub on 80hz/12db down on the sub amp.

80 hz seems a little high to me. I have my subs crossed at 60hz.

And just leave the bass boost down. There is no need for it.