[Hiroyue]

So I have 2010 328i with a JBL ms8 running dls r4’s in the door and vibe slick v3’s in the back and center. Technic did the install for the prior owner years back recently the center went out I swapped over a working vibe but still no sound. My assumption is the channel the center is on is blown but not sure how the jbl ms8’s internal amp works. Could I switch the center to my last open channel or could I add a amp after the ms8 to get it up and just power the other 2 with it on a 4 channel like a jl jx400

[mweisdorfer]

Originally Posted by Hiroyue

So I have 2010 328i with a JBL ms8 running dls r4’s in the door and vibe slick v3’s in the back and center. Technic did the install for the prior owner years back recently the center went out I swapped over a working vibe but still no sound. My assumption is the channel the center is on is blown but not sure how the jbl ms8’s internal amp works. Could I switch the center to my last open channel or could I add a amp after the ms8 to get it up and just power the other 2 with it on a 4 channel like a jl jx400

I'd try moving the center channel to another open channel first. If it works, then you know something is up with the channel the center is currently on. I like the JL XD series. It's s much better amp. Alpine PDR is also a nice amp as well. You should set up the amp after the JBL MS-8. Run your high def output connections into the amps High Def input connections. Then run speaker wires from the amp.

[Hiroyue]

Thanks for the advice, I assume I will have to do recalibrate the system to move the channel for the ms-8 to test if it’s burnt up. If that works I assume the original channel would be no good at all anymore even if it was amped after the ms8?

[biz77]

Originally Posted by Hiroyue

Thanks for the advice, I assume I will have to do recalibrate the system to move the channel for the ms-8 to test if it’s burnt up.

Yes, you will need to reconfigure the channel setup, reset crossovers and rerun the calibration. Basically start setup over from the beginning. Fortunately the whole process takes 10-15 minutes.

Originally Posted by Hiroyue

If that works I assume the original channel would be no good at all anymore even if it was amped after the ms8?

Maybe, maybe not. It's likely that just the amplifier channel is bad. If that's the case the pre-amp output for that channel would still function and you could use an outboard amplifier for that channel. This would still require reconfiguring the MS8 to tell it you are using outboard amplification for that channel versus the internal amplifier.

[Hiroyue]

Got it, yeah looking through the manual that’s what I thought I got out of it. I just need to get my crossovers down right I’ve never personally set up the system so trying to learn. It seems like a pretty straight forward system can I go to sonicelec to find my speaker ranges?, and should I set the cross over directly at what the speakers are rated for I know don’t got lower in bass or higher but if it’s rated for 66-20k should I set it at 70-18k

[kaigoss69]

Originally Posted by Hiroyue

Got it, yeah looking through the manual that’s what I thought I got out of it. I just need to get my crossovers down right I’ve never personally set up the system so trying to learn. It seems like a pretty straight forward system can I go to sonicelec to find my speaker ranges?, and should I set the cross over directly at what the speakers are rated for I know don’t got lower in bass or higher but if it’s rated for 66-20k should I set it at 70-18k

Yes and No, the DLS you can experiment with how low they play. I would start at 150Hz with 24 db slope. Center 200Hz high pass, rears 100Hz.

[Hiroyue]

Alright so here’s a update got a deal on a jl xd600/6, should have it by this weekend. Unfortunately for tuning wise the car has been down for waiting on some engine parts. So it seems I will be up and running literally.

[mweisdorfer]

Originally Posted by Hiroyue

Alright so here's a update got a deal on a jl xd600/6, should have it by this weekend. Unfortunately for tuning wise the car has been down for waiting on some engine parts. So it seems I will be up and running literally.

Good deal. I will really like the XD 600/6 v2.

Now you just need an amp to run your underneath subs & potentially a trunk sub. The 6 channel amp will run every channel in the logic 7 setup except the subs. There's 7 channels if you parallel wire the rear door & rear shelf speakers. If not, then you have 9 channels to deal with & the JBL MS-8 can't do its job.

You are gonna need 4 of these -

JL Audio XD - CLRAIC2 SW RCA to speaker wire.

It's the only way you can hook up the HD Output harness speaker wires from the JBL MS-8 to the RCA inputs on the JL Audio XD. The JL Audio XD does not have an HD input.

[Hiroyue]

So the prior upgrades before my ownership the sws8’s did get amped post ms8 with a xd200/2 so that is kind of why I didn’t got the route of a helix or a xd800/8. I guess it’s money now used for a couple sets of JL Audio Core Audio Interconnects - Audio cable - molded - 3 ft - M RCA x 2 to M RCA x 2 I got a couple sets of these already to hook the ms-8 to the Xd correct me if I’m wrong but the ms8 amp outputs are the rca’s and the Xd only has rca inputs and the outputs its speaker wire tightened down to the channels.

[Hiroyue]

So got the car up and recal’ed the system center is working again didn’t change channels or anything yet. Jl xd600/6 on its way and I picked up another jl ms-8 as a backup got it for dirt cheap because it was just the dsp nothing else, anyone have any luck putting one of these in a e39 wagon my wife has one with stock dsp I didn’t see anything through the forums of anyone doing one. Could cut out the old dsp and wire this in would I need to decide to base?

[mweisdorfer]

Originally Posted by Hiroyue

So the prior upgrades before my ownership the sws8’s did get amped post ms8 with a xd200/2 so that is kind of why I didn’t got the route of a helix or a xd800/8. I guess it’s money now used for a couple sets of JL Audio Core Audio Interconnects - Audio cable - molded - 3 ft - M RCA x 2 to M RCA x 2 I got a couple sets of these already to hook the ms-8 to the Xd correct me if I’m wrong but the ms8 amp outputs are the rca’s and the Xd only has rca inputs and the outputs its speaker wire tightened down to the channels.

The JBL MS 8 can use RCA outputs & inputs. The manual terms them as "low" level. I used the HD outputs, which are basically, 16 speaker wires used for 8 channels coming out of a harness of sorts. You just use a ratcheting, crimping tool to connect them to the speaker wire end of the JL Audio RCA interconnect. You might want to consider buying special gold plated terminals.

You are correct in that the JL Audio XD 600/6 v2 only uses RCA for inputs.

[Hiroyue]

Originally Posted by mweisdorfer

The JBL MS 8 can use RCA outputs & inputs. The manual terms them as "low" level. I used the HD outputs, which are basically, 16 speaker wires used for 8 channels coming out of a harness of sorts. You just use a ratcheting, crimping tool to connect them to the speaker wire end of the JL Audio RCA interconnect. You might want to consider buying special gold plated terminals.

You are correct in that the JL Audio XD 600/6 v2 only uses RCA for inputs.

I think you lost me where would I need to use the speaker to rca’s if I’m reading the MS-8 install right I probably won’t even use the harness for outputs I only have 5 channels on it now because the subs are on the other amp. I’ll just be using rca’s in between the ms8 and the jl Xd then the out puts on the jl would be speaker wire

[mweisdorfer]

Originally Posted by Hiroyue

I think you lost me where would I need to use the speaker to rca's if I'm reading the MS-8 install right I probably won't even use the harness for outputs I only have 5 channels on it now because the subs are on the other amp. I'll just be using rca's in between the ms8 and the jl Xd then the out puts on the jl would be speaker wire

Use the speaker wire output harness on the JBL-MS 8. Run everything out from JBL MS 8 to your amp(s) including your sub amp.

Your amps require RCA inputs. That's were you use the JL Audio RCA speaker wire to RCA adapters.

Then use the amps to feed the speakers themselves.

You probably need s technique harness.

When you set up the JBL-MS 8, tell it that you have 2 subs. Set up your front channel as a two way. When you do that, it will use the front door speakers & the underneath the seat subs as your two channels.

Set your first cross over, on the 2 way front, at say 50 for starters. Set the second cross over at 200.

[mweisdorfer]

Originally Posted by Hiroyue

I think you lost me where would I need to use the speaker to rca’s if I’m reading the MS-8 install right I probably won’t even use the harness for outputs I only have 5 channels on it now because the subs are on the other amp. I’ll just be using rca’s in between the ms8 and the jl Xd then the out puts on the jl would be speaker wire

Here is a pic of my car. You can see the black JL Audio RCA to speaker wire adapters plugged into the JL Audio XD 600/6 v2 RCA inputs & the crimped terminals. The jacketed speaker wire makes its way to the JBL MS-8's HD output harness.

The JL Audio XD 600/6 v2's speaker outputs are hooked up to 5 channels of speakers via a Technique Harness.

[biz77]

Originally Posted by mweisdorfer

Use the speaker wire output harness on the JBL-MS 8. Run everything out from JBL MS 8 to your amp(s) including your sub amp.

Your amps require RCA inputs. That's were you use the JL Audio RCA speaker wire to RCA adapters.

Why on earth would you use the high level outputs on the MS8 to go into low-level inputs on the amplifiers?

If OP already has signal being fed into the MS8 then he would just need regular RCA cables to connect the MS8 to the amplifier(s) as he indicated above with reference to the owner's manual.

[Hiroyue]

I’ve been side tracked with the wife’s e39 wagon this week I’ve been rebuilding her front end suspension and changed the wheel hubs to the e60 pelican has a great deal on the hubs like 50$ for the pair shipped put some e92 rims on it. So I haven’t touched the amp to put it in I have 3 sets of 2 channel rca double ended JL Audio cables so the doors rear deck and center will be hooked up.

[Hiroyue]

Update, after several long days wife’s wagon suspension brakes and bearing all redone new rims from a e60 and some Goodyear eagles to ride on like a new car. Even put a little mini amp to make her aux cord sound like it a cd. Finished the install of the JL xd600/6 recaled and tweaked some of the gains and it sounds superb, the gong sounds like a bomb when it goes off though even with the ms8 turned to -15. Oh and my battery died getting into it last night car was at work for 8 hours and she was caput, I disconnected the amps for the ride home after I jumper boxed her to life. My assumption is the battery is on its way out? Maybe 4 years old at most 5 but I live in Florida so I know the heat murders our batteries. I don’t need to register the battery after a amp install correct?(to show the system and increased load current)

[ctuna]

If you did a long install with the battery connected and car awake
it could have depleted the battery.
Put on long slow charge on it and go from there.
You did make sure everything you attached can go to sleep with the
rest of the car didn't you.

[Hiroyue]

The car was drove for an hour to work before I came out to it being dead, left the amps disconnected for the ride home. First crank today car was slow to start still no amps plugged in for power. Yes everything running off the rem out from jbl and jbl input harness was built by technic I believe the rem in for it is from the the head unit or the lock control. So it should all be sleeping, I’ve been thinking about running a rem from the cig lighter because I do get the slight pops at turn on and sleep but that only happens on high jbl volume.

[ctuna]

Average life on the battery is 6 years.
Also short drives don't replenish the battery.
Get a full charge on it and start from there.

I had an already weak battery by the time I started
my installs and it was weakened further by the process.

[Hiroyue]

Thanks tuna I’ll have to pick up a charger gave my old one up to my father since he was having issues with a old vette.

[ctuna]

Its a good idea to have a battery tender with these
cars cause they are battery hogs.
a ctek 4.3 or better is recomended .
In fact BMW rebrands and sells it as there officaial one now.
5 to 8 hours should fill the battery .

electical e90 pdf
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU

georges links
https://www.bimmerfest.com/forums/at...9&d=1539905743