[moz335d]

Like many, I was suffering base audio woes, I did a ton of research (thank you Ctuna!) from bavsound drop ins, to retrofitting hifi tweeters, to even looking at completely isolated setups.

(all the information you could want is already in this forum)

But it led me right back to a DSP Amp, technic harness and fancy new speakers (or heck even L7/HK speakers).

In total I have so far around $2100 in parts. I got lucky with some VERY discounted speakers. A;so huge thanks to MusicarNW for the amp and advice as well!


Parts:
Gladen One 201 BMW (non extreme)
- Tweeters
- Door speakers
- Underseat woofers
Focal Auditor RCX100
- Rear Deck
Technic 4/6 stereo harness w/standard termination
Match 7BMW DSP amplifier
Door surround with tweeters


Laying this all out makes a lot more sense, and should be super simple other than "arranging" two quadralock harnesses (technic and android headunit) behind the CIC lol

[bmw335ie90]

Looks like some good equipment! Godspeed on getting two daisy chained harnesses to fit in there, i couldnt even get my Technic harness alone to fit without smashing it in with CIC. I ended up extenting the wires on the relay to remotely mount it so nothing was touching behind the head unit.

[moz335d]

Originally Posted by bmw335ie90

Looks like some good equipment! Godspeed on getting two daisy chained harnesses to fit in there, i couldnt even get my Technic harness alone to fit without smashing it in with CIC. I ended up extenting the wires on the relay to remotely mount it so nothing was touching behind the head unit.

I think so too, worth the investment!

No kidding!! It was impossible, Like actually impossible to fit both harnesses, I'll explain how I kept the AVIN / Carplay / AA unit installed with technics harness!

[moz335d]

So I'm writing this already having completed the installation. Just wanting to use this to share my experience After dealing with the CIC harness I kinda dropped off taking photos.

Only issue I'm having is very little to no sound from the underseat. Wondering if either I'm not sending HiFi signal to the amp or if the crossover isn't setup 100% in the DSP.

Next is to ensure HiFi has been coded properly, then see about messing with the crossover. Regardless of the success of either of those, I will be finishing this project by heading over to Cartunes of Atlanta for them to magically make this all sound mint.

Huge thanks to the following:

Nick from MusicarNW
Ctuna (E90post)
Technic PNP (for saving a ton of wiring work)
ORCA Design

[ctuna]

You might as well try to tune the DSP/Amp if you have come this far
I assume you have the two higher output channels wired to the
underseats.

DSP

http://www.e90post.com/forums/showthread.php?t=1384218
http://www.e90post.com/forums/showthread.php?t=1383653
http://www.e90post.com/forums/showthread.php?t=1381697

http://www.e90post.com/forums/showthread.php?t=1384218
http://www.e90post.com/forums/showthread.php?t=1383653
http://www.e90post.com/forums/showthread.php?t=1381697

[moz335d]

Originally Posted by ctuna

You might as well try to tune the DSP/Amp if you have come this far
I assume you have the two higher output channels wired to the
underseats.

I have been trying lol, everything fought me, I couldn't even connect to the DSP until randomly one cable and one laptop of mine decided to work.

I bumped all other channels down as much as I could (dB) and then bumped the woofer channels up as much as I could (+10dB) and voila the underseats sorta work, granted the audio on the radio has to be near max now.

I cant even make use of the EQ part because no matter what I do in the DSP EQ the underseats wont work unless I do something with the gain.

So I think I need to properly set the gain on the amp and then input gain in the software and maybe then it should work?

The DSP is configured with the two front input signals being used for the sub channels yes, I tried both front and rear at 50% ea and just rear at 100% to no avail.

Probably something stupid simple that I'm missing because my audio abilities end and running wires and soldering lmao.

I wired it as follows using Technics harness:

Stereo (via Technic harness) | Fischer DSP
FL OUT | FL IN
FR OUT | FR IN
RL OUT | RL IN
RR OUT | RR IN

Fischer DSP | Stereo (via Technic harness)
FL OUT | FL IN
FR OUT | FR IN
RL OUT | RL IN
RR OUT | RL IN
CENTER OUT | NOT USED

FISCHER DSP | Underseat woofer (Direct connection, new separate wiring)
SW L | L Woofer
SW R | R Woofer

Underseat woofer wire connection = Bridged (via Technic plug)

[ctuna]

that amp should have plenty of juice to run almost any under seat speaker
and make it loud.

Sound's like a wiring issue would be the first conclusion.

So the wires that go to the under seats are directly hooked up to the
sub channels on connector 1 ( from the manual) .
If the Front door speakers are working at somewhat normal levels they
should have the same source FR and FL .

Why would you have to solder if you are using harnesses?
Can you use and ohmmeter to check your wiring.

[moz335d]

Originally Posted by ctuna

that amp should have plenty of juice to run almost any under seat speaker
and make it loud.

Sound's like a wiring issue would be the first conclusion.

So the wires that go to the under seats are directly hooked up to the
sub channels on connector 1 ( from the manual) .
If the Front door speakers are working at somewhat normal levels they
should have the same source FR and FL .

Why would you have to solder if you are using harnesses?
Can you use and ohmmeter to check your wiring.

I followed the manual listed on Audiotech-Fischers website I had to solder the Technic harness to the DSP Amp harness and also solder the AVIN harness to the quadralock harness.

Musicar made the DSP wiring idiot proof, even so I already did a continuity check on all connections before fishing it through the car. All connections fine.

Because this is marketed as the 7BMW it doesnt include a wiring diagram but its literally the same as the 7DSP. Page 29 (minus center speaker, semi-active)



99.99% sure I am just illiterate with crossovers and HPF/LPF settings because as I mentioned they work fine if the gain is set very high for the sub channels.

I haven't had more than 15 minutes to mess with it so I'm sure if I spend a few hours I'll be able to get it working. Plus absorb as much as I can tuning wise.

https://www.audiotec-fischer.de/medi...P-7DSP_Web.pdf

[ctuna]

https://www.audiotec-fischer.de/medi...b_25-09-18.pdf

See page 20

There are other downloads at the audio tech Fischer site to for the 7BMW

Manual is there the pin out is in the manual you have to scroll through the German
section to get to the English section .
Also it would be a good idea to read the manual.

Posi Tap Connectors and T taps are the best way to connect
wires without soldering.

See page 20

There should be no physical crossovers to the under seats.
The electronic filter and crossover point for the underseats are set up
in the DSP programming.

There are other downloads at the audio tech Fischer site to for the 7BMW
including a basic tune for a BMW Hi Fi system

https://www.audiotec-fischer.de/en/m...ifiers/up-7bmw

https://www.audiotec-fischer.de/en/m...ifiers/up-7bmw

[moz335d]

Originally Posted by ctuna

https://www.audiotec-fischer.de/medi...b_25-09-18.pdf

See page 20

There are other downloads at the audio tech Fischer site to for the 7BMW

Manual is there the pin out is in the manual you have to scroll through the German
section to get to the English section .
Also it would be a good idea to read the manual.

Posi Tap Connectors and T taps are the best way to connect
wires without soldering.

See page 20

There should be no physical crossovers to the under seats.
The electronic filter and crossover point for the underseats are set up
in the DSP programming.

There are other downloads at the audio tech Fischer site to for the 7BMW
including a basic tune for a BMW Hi Fi system

https://www.audiotec-fischer.de/en/m...ifiers/up-7bmw

https://www.audiotec-fischer.de/en/m...ifiers/up-7bmw

Again, I already followed the 7BMW install guide. Wiring is not an issue.

I got them working decently after moving the crossover (in the DSP software yes) to around 250Hz and a little gain boost on those two channels.

Sounds great now and at this point I can attempt fine tuning.

[ctuna]

there were some dsp discussion's on which filters to use for the audiotech
DSP might be in those setup video's and on the audiotech site . I seem
to recall Bessel as a favorite but I would check it.

[jht3]

where did you get the Technic Stereo 4/6 harness? i contacted him and the base stereo 4/6 harness is discontinued.

kicking myself for not buying one years ago. but life got in the way and upgrading the E90 took a back seat.

i could build one myself, but in reality i'm never going to find/make the time. or vampire tap the existing wires, but i dont like that approach.

[moz335d]

Originally Posted by jht3

where did you get the Technic Stereo 4/6 harness? i contacted him and the base stereo 4/6 harness is discontinued.

kicking myself for not buying one years ago. but life got in the way and upgrading the E90 took a back seat.

i could build one myself, but in reality i'm never going to find/make the time. or vampire tap the existing wires, but i dont like that approach.

I am so sorry for the delayed reply, school got busy and the car has been doing nothing but being driven.

Thats really unfortunate, In all honesty, the technic harness wasnt "necesary" as you can buy the metra connectors (71-9003 & 70-9003) and then route the wires the same way, more work but same result.

But I didnt appreciate the convininece until I had to rip half the car apart to install and neatly route everything.