'10 328i - base audio upgrade options

sfinxvc · 04-13-2021, 08:28 PM

Hey forum, I'm new here. If this isn't the right place for this thread, or if there's a thread that addresses this, or if I can ask the question in a general purpose advice thread, let me know.
--
I bought a 2010 328i xdrive last year that is in excellent condition and @ about 110K mi. It was a little below market price as well and has been wonderful as a first car in what might be the waning era of gasoline vehicles (or not, w/e).

Anyway, while I don't know much about cars, I do know audio. Specifically, about acoustics, 2-channel home audio, etc. And the base 328i has very garbage sound.

Given how old this car is and how much I paid for it, I don't want to spend a lot of money to solve this problem, and I'm also learning that the car audio world is full of things I'm unaccustomed to, e.g. harnesses and what not.

Someone I know and trust recommended a $1K+ German door speaker kit but that's a little much for me. If that's the price of solving the problems, I would rather not solve them.

What do you all think, is it possible to improve the sound for sub-$500?

Regarding goals, if I could have some more control over the frequency response, that would help. I'm in general into a downward sloping response (think about 10db down from 20hz to 20khz). I don't need heavy bass, and I don't need other people to hear my car. Basically a flatter/more linear response midrange on up would really help.

Thanks.

whyzee125 · 04-13-2021, 08:31 PM

There’s a master thread that covers all the audio systems and the common upgrades for each. The base is truly a horrible system. I don’t remember the name of the thread but shouldn’t be hard to find. Likely your best bet would be to recode your head unit to hifi then go with the sound processor/amp and speakers of your choice. There are some good suggestions that a lot of people have used with success

ctuna · 04-14-2021, 12:10 AM

Probably the most asked question on here.
But you can't do anything great without throwing a lot of money
at it. 1k minimum if you are creative but more like 1500 if you want a great
system. (Why is it expensive 4 inch thin speakers for the doors and 8 inch thin speakers
for the floors not a lot of manufacturer's make stuff that fits. ) also with the base system
there is no wiring to the Trunk for and amp .
Do and advanced search here with base system as the search parameter
limited to this subforum hundreds of thread's on this subject already here.

sfinxvc · 04-14-2021, 12:56 PM

Alright, thanks for the advice guys - I also found the master thread and it has a dedicated section on base audio upgrades. Thanks for the search tip too.

sfinxvc · 04-15-2021, 06:19 PM

Alright so I've oriented myself a bit better now...

It seems the base audio in my 2010 328i has:

- Stock HU that fudgifies the signal
- No tweeters
- No amp

(aka the 'I hate music and myself' package)

Common solutions include...

a) De-fudgifying the signal using a reverse EQ, almost like an RIAA on a turntable phono pre, or coding the stock HU to output flat. The latter is favorable in my POV.

b) Adding tweeters, tweeter sails, and an amp.

Questions...

1) Pretty much 100% of my music will come off my phone/Spotify, how do car audio folks get a digital signal out into a DAC?

2) Do you rely on the DAC of the HU and/or DSP/amp? Are there HU that output digital to DSP/amps that then do the D/A conversion? What's favored?

3) I've seen a number of amps from Bimmertech to others that use what looks to me like a generic Alibaba amp called the "PP82DSP" - can this be sourced directly? What's the experience like programming this? I'm competent enough with measurements to calibrate the drivers once they're in the vehicle, but if programming the DSP is a nightmare, I will avoid this.

4) Someone I know who knows someone else has some stock tweeters, sails and a HK stock amp and is willing to sell for about $300-400 - is this a good deal? Also, HK stock amp signifies they have the Option 688 13 speaker set up, right? Wouldn't this amp be overkill if I'm just trying to get some tweeters going in addition to the 6 channels that come with base?

Thanks fellas.

sfinxvc · 04-15-2021, 06:28 PM

One more thing...

5) I guess one option that goes toward competent full-range sound would be to get HiFi output, then add tweeters, tweeter sails, and--disconnecting the rear woofers--send that signal to the tweeters. The tweeter will probably need a high pass/capacitor in series to protect it from the full glory of the stock HU's output, which I've heard is only 18W.

Has anyone tried this? I know you lose direct sound in the rear, but you can theoretically get full-range sound in the front. It would be ideal if you could create filters for the front door woofers and underseat, but I don't think the stock HU can be programmed to apply different filters to different outputs like a DSP, or can it???

This approach seems to be the most cost effective...but I wonder if I'm overlooking something you vets know.

ctuna · 04-15-2021, 07:43 PM

sfinxvc · 04-15-2021, 08:27 PM

Quote:

Originally Posted by ctuna

If you program to Hi Fi you only have pre out voltage levels from the Head
Unit . That means you need and Amp a 6 channel amp.

Yes AudioTech Fisher makes the Helix 86dsp (82dsp old version) it's a German company.
These are decent multichannel amps with superior dsp.
If you want digital in or USB/SD one of these is the cheapest way to go
https://www.e90post.com/forums/showt...ight=bluetooth

There are three common system's
Stereo no amp no tweeters, 6.5 inch underseats glued into enc losers.(Speakers alone for this system
would on be a placebo effect)
Hi Fi tweeters and 8 inch speaker under the seat 6 channels from a very weak
analog amp.
Top Hi Fi or Logic 7

9 channel amp with fiber optic Input and sound processing . 13 speaker pre LCI
but tweeters are counted as speakers.
All the BMW amps are spec'ed at 10 percent distortion for marketing reasons.
That is why aftermarket stuff is way better.

Thanks, that's super helpful.

The Match PP86DSP is $749 on the bay, more than I want to get into at this point. I'm still trying to game the system to some degree.

Is there any reason something like this wouldn't work? (harness wise or something?)
https://www.sony.com/electronics/car...iers/xm-gs6dsp
Goes for about $400.

I've another potentially novice question, if I can get HiFi coded on the HU and it outputs line-level pre-outs, why would I need so many inputs on the amp? Shouldn't the line-level pre-out just be 2 signals (+/-) for L and R and get split at the amp? Or is it common practice to supply multuple line-level signals from the HU before the amp?

Would I need any special harnesses or anything to get HiFi line level output into that Sony amp?

I appreciate all the help I'm getting here so far, no doubt if this works out I'll post how it goes down so there's a way forward cheaply for folks.

ctuna · 04-15-2021, 08:31 PM

Use a Technic Harness it is designed for these Cars.
You can use any 6 channel amp that supports differential Inputs
or speaker outs from the Head Unit.
Reprogramming your Head unit to Hi Fi might not be possible without
a more expensive Icom cable.

It's not really clear if the Sony is a true 6 channel amp with independent DSP
on each channel.

The Head unit is 4 out FR, FL,RL , RR regardless it's hardware The helix 86dsp is an 8 channel out amp with
individual dsp on each out channel . You could go active with that or bridge channels
for more power on a channel I believe. Bottom line you deciede in the setup which Input channels
go to which output channels.

Most 6 channel amps are 4 in 6 out . You program the source or use a switch to set that up
for Inputs to designated outputs.

sfinxvc · 04-15-2021, 08:34 PM

Quote:

Originally Posted by ctuna

Use a Technic Harness it is designed for these Cars.

Found the Technics website. You're fantastic for helping out! Much appreciated.

ctuna · 04-15-2021, 08:38 PM

You can use any Amp that supports Differential low Inputs or Speaker level
Inputs. You may have trouble programming the Head Unit to Hi Fi output levels without
a ICOM cable . Using speaker level ins with DSP would allow you to re eq
without reprogramming the Head Unit.

You only use 4 Inputs to the amp that come of the Head Unit .
Any good amp will be able to route the Front Input channels to separate output channel.
You want the front doors and floors on separate channels both for power and eq.

Its not clear what the Sony Can do I suggest you download the manual and take a look at
there app for phone.
It says 6 channel but I don't know it if really is with all the features.

sfinxvc · 04-15-2021, 10:04 PM

Quote:

Originally Posted by ctuna

You can use any Amp that supports Differential low Inputs or Speaker level
Inputs. You may have trouble programming the Head Unit to Hi Fi output levels without
a ICOM cable . Using speaker level ins with DSP would allow you to re eq
without reprogramming the Head Unit.

You only use 4 Inputs to the amp that come of the Head Unit .
Any good amp will be able to route the Front Input channels to separate output channel.
You want the front doors and floors on separate channels both for power and eq.

Its not clear what the Sony Can do I suggest you download the manual and take a look at
there app for phone.
It says 6 channel but I don't know it if really is with all the features.

It seems to be possible...

I'd connect woofer outputs to underseats, midrange outputs to rear deck woofers, and tweeter outputs to front door woofers and tweeters in parallel (with passive components in series as necessary).

It's still quite a bit of money though...

Coding to HiFi - $?
Technics harness and wiring - $?
Sony XM-GS6DSP - $400
Tweeters and sails - $200

Not to mention labor if I decide to have any of these done for me.

But this is basically the cheap equivalent (and not even that much cheaper) of the Musicar stage 1 where they have you keep stock speakers and just give you pre-loaded filters on the amp.

EDIT: just confirmed, the manual says the following...

You can adjust tweeter HP from 500hz to 4khz and level
Midrange LP 500hz to 4khz and HP from 50hz to 500hz, and level
Woofer LP from 50hz to 500hz, level and boost 40hz up to 10db

ctuna · 04-15-2021, 11:18 PM

connectors
http://www.e90post.com/forums/showpo...9&postcount=19
http://www.e90post.com/forums/showth...ower+Connector
connectors1
http://www.e90post.com/forums/showpo...9&postcount=19

I believe every Musicar upgrade at least upgrades the front door and floor speakers.
If you are buying door speakers which you should buy them or acquire them as a component set.
Technic's prices are listed on his website.

The setup you show is and active setup that has the tweeters on a separate channel each.
Mostly people would run one channel to each door with a passive crossover that comes with
a component set . Then you would do the same for the rear speakers. If you have PDC and or gongs
that go to the rear speakers you would want to do this especially if you recode to hi fi as when you do
this it drops all channels from the head unit to 5 volt differential signals basically low level speaker outs.

True DSP is like having a graphic or parametric equalizer on every channel with time delay.
Plus all kinds of other control like filters and levels.

E92x7z · 04-16-2021, 08:43 AM

download the demo version ATF DSP PC-Tool 4.75a ... enter the settings and you will answer why Match PP86DSP is a compromise and after see DSP 2/3

jl fix 82 get analog signal and get optical to another DSP but in this time only Audiocontrol and Mosconi have DSP +BT module in aptX HD /helix have only aptX/

sfinxvc · 04-16-2021, 10:02 AM

Quote:

Originally Posted by E92x7z

download the demo version ATF DSP PC-Tool 4.75a ... enter the settings and you will answer why Match PP86DSP is a compromise and after see DSP 2/3

jl fix 82 get analog signal and get optical to another DSP but in this time only Audiocontrol and Mosconi have DSP +BT module in aptX HD /helix have only aptX/

I'm not gonna lie, most of that went over my head. I think you're saying the Match PP86DSP is a compromise...but I couldn't tell relative to what? To the configured versions of it sold by outfits like Bimmertech? Or to some dedicated DSP solution?

Sorry man, just too uninformed when it comes to car audio to tell.

--

In other news, I found a nice DSP/amp that rivals the Sony's price but with even more control: the JBL DSP4086.

I'm still not sure exactly what differentiates something like the JBL DSP4086 from the Match PP86DSP. I guess maybe some hardware and support/community as mentioned above. Features seem similar enough.

ctuna · 04-16-2021, 03:24 PM

In general you want a amp that will deliver at least 50 watts a channel at 4 ohms
with a low distortion spec at that output.
There are many multi channel amps that do that now.
And now a lot of them have DSP.
What is true DSP .
It allows you to apply frequency filters of all kinds an allows eq on each channel
like a parametric or graphic equalizer as well as delay .
This is done through programming . When I see physical eq adjustments on the
back of something it make me suspicious it's really DSP.

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

ctuna · 04-16-2021, 03:31 PM

Aptx only works with Android phone I believe.
Didn't know there was and Aptx HD

https://www.aptx.com/aptx-hd

Looks like there are limited number of even Android phones
that support Aptx HD
and Sammsung is not one of them although it does Aptx.

E92x7z · 04-17-2021, 02:33 AM

you have many option ... i test 5 diferent DSP to my car in now i have 2 into the car .... need a know you need change front speakers

and underseat "mids "
my POV is a dsp + one 2 chanel D and one 4 chanel AB amp. ...
you have more option man .. ONLY you have to know what you want

aptX not a bad ...

sfinxvc · 04-22-2021, 02:38 PM

So my friend tried to recode the HU for me but it seems it's not possible on my car. A profesional installer I messaged warned that it might not be possible to recode either.

I suppose getting an aftermarket HU will also provide flat outputs? i.e. won't include the EQ the stock base system has, right? I suspect so, but just trying to confirm before I get a HU.

ctuna · 04-22-2021, 10:40 PM

A dsp can flatten the curve if you get a good one.
In New York you should be able to find a coder with
and Icom cable that can code the Head Unit.
I would put up a post on the coding sub forum.

bmw335ie90 · 05-04-2021, 11:08 PM

Quote:

Originally Posted by sfinxvc

So my friend tried to recode the HU for me but it seems it's not possible on my car. A profesional installer I messaged warned that it might not be possible to recode either.

I suppose getting an aftermarket HU will also provide flat outputs? i.e. won't include the EQ the stock base system has, right? I suspect so, but just trying to confirm before I get a HU.

You have navigation or no?

sfinxvc · 05-05-2021, 12:40 PM

Quote:

Originally Posted by bmw335ie90

You have navigation or no?

nope

04-13-2021, 08:28 PM	#1
sfinxvc Enlisted Member 0 Rep 32 Posts Drives: BMW 328i xdrive Join Date: Apr 2021 Location: NY iTrader: (0)	'10 328i - base audio upgrade options - V4M Hey forum, I'm new here. If this isn't the right place for this thread, or if there's a thread that addresses this, or if I can ask the question in a general purpose advice thread, let me know. -- I bought a 2010 328i xdrive last year that is in excellent condition and @ about 110K mi. It was a little below market price as well and has been wonderful as a first car in what might be the waning era of gasoline vehicles (or not, w/e). Anyway, while I don't know much about cars, I do know audio. Specifically, about acoustics, 2-channel home audio, etc. And the base 328i has very garbage sound. Given how old this car is and how much I paid for it, I don't want to spend a lot of money to solve this problem, and I'm also learning that the car audio world is full of things I'm unaccustomed to, e.g. harnesses and what not. Someone I know and trust recommended a $1K+ German door speaker kit but that's a little much for me. If that's the price of solving the problems, I would rather not solve them. What do you all think, is it possible to improve the sound for sub-$500? Regarding goals, if I could have some more control over the frequency response, that would help. I'm in general into a downward sloping response (think about 10db down from 20hz to 20khz). I don't need heavy bass, and I don't need other people to hear my car. Basically a flatter/more linear response midrange on up would really help. Thanks.
	Appreciate 0 Tweet Quote

04-13-2021, 08:31 PM	#2
whyzee125 Brigadier General 1673 Rep 3,640 Posts Drives: Dinan stage 2 335i Join Date: Jul 2014 Location: Chattanooga Tn iTrader: (0)	There’s a master thread that covers all the audio systems and the common upgrades for each. The base is truly a horrible system. I don’t remember the name of the thread but shouldn’t be hard to find. Likely your best bet would be to recode your head unit to hifi then go with the sound processor/amp and speakers of your choice. There are some good suggestions that a lot of people have used with success
	Appreciate 1 sfinxvc0.00 Quote

04-14-2021, 12:10 AM	#3
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Probably the most asked question on here. But you can't do anything great without throwing a lot of money at it. 1k minimum if you are creative but more like 1500 if you want a great system. (Why is it expensive 4 inch thin speakers for the doors and 8 inch thin speakers for the floors not a lot of manufacturer's make stuff that fits. ) also with the base system there is no wiring to the Trunk for and amp . Do and advanced search here with base system as the search parameter limited to this subforum hundreds of thread's on this subject already here. Last edited by ctuna; 04-14-2021 at 10:27 AM..
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04-14-2021, 12:56 PM	#4
sfinxvc Enlisted Member 0 Rep 32 Posts Drives: BMW 328i xdrive Join Date: Apr 2021 Location: NY iTrader: (0)	Alright, thanks for the advice guys - I also found the master thread and it has a dedicated section on base audio upgrades. Thanks for the search tip too.
	Appreciate 0 Quote

04-15-2021, 06:19 PM	#5
sfinxvc Enlisted Member 0 Rep 32 Posts Drives: BMW 328i xdrive Join Date: Apr 2021 Location: NY iTrader: (0)	Alright so I've oriented myself a bit better now... It seems the base audio in my 2010 328i has: - Stock HU that fudgifies the signal - No tweeters - No amp (aka the 'I hate music and myself' package) Common solutions include... a) De-fudgifying the signal using a reverse EQ, almost like an RIAA on a turntable phono pre, or coding the stock HU to output flat. The latter is favorable in my POV. b) Adding tweeters, tweeter sails, and an amp. Questions... 1) Pretty much 100% of my music will come off my phone/Spotify, how do car audio folks get a digital signal out into a DAC? 2) Do you rely on the DAC of the HU and/or DSP/amp? Are there HU that output digital to DSP/amps that then do the D/A conversion? What's favored? 3) I've seen a number of amps from Bimmertech to others that use what looks to me like a generic Alibaba amp called the "PP82DSP" - can this be sourced directly? What's the experience like programming this? I'm competent enough with measurements to calibrate the drivers once they're in the vehicle, but if programming the DSP is a nightmare, I will avoid this. 4) Someone I know who knows someone else has some stock tweeters, sails and a HK stock amp and is willing to sell for about $300-400 - is this a good deal? Also, HK stock amp signifies they have the Option 688 13 speaker set up, right? Wouldn't this amp be overkill if I'm just trying to get some tweeters going in addition to the 6 channels that come with base? Thanks fellas.
	Appreciate 0 Quote

04-15-2021, 06:28 PM	#6
sfinxvc Enlisted Member 0 Rep 32 Posts Drives: BMW 328i xdrive Join Date: Apr 2021 Location: NY iTrader: (0)	One more thing... 5) I guess one option that goes toward competent full-range sound would be to get HiFi output, then add tweeters, tweeter sails, and--disconnecting the rear woofers--send that signal to the tweeters. The tweeter will probably need a high pass/capacitor in series to protect it from the full glory of the stock HU's output, which I've heard is only 18W. Has anyone tried this? I know you lose direct sound in the rear, but you can theoretically get full-range sound in the front. It would be ideal if you could create filters for the front door woofers and underseat, but I don't think the stock HU can be programmed to apply different filters to different outputs like a DSP, or can it??? This approach seems to be the most cost effective...but I wonder if I'm overlooking something you vets know.
	Appreciate 0 Quote

04-15-2021, 07:43 PM	#7
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	If you program to Hi Fi you only have pre out voltage levels from the Head Unit . That means you need and Amp a 6 channel amp. Yes AudioTech Fisher makes the Helix 86dsp (82dsp old version) it's a German company. These are decent multichannel amps with superior dsp. If you want digital in or USB/SD one of these is the cheapest way to go https://www.e90post.com/forums/showt...ight=bluetooth There are three common system's Stereo no amp no tweeters, 6.5 inch underseats glued into enc losers.(Speakers alone for this system would on be a placebo effect) Hi Fi tweeters and 8 inch speaker under the seat 6 channels from a very weak analog amp. Top Hi Fi or Logic 7 9 channel amp with fiber optic Input and sound processing . 13 speaker pre LCI but tweeters are counted as speakers. All the BMW amps are spec'ed at 10 percent distortion for marketing reasons. That is why aftermarket stuff is way better. BMW stereo types http://www.e90post.com/forums/showthread.php?t=352586 http://www.e90post.com/forums/attach...2&d=1266451970 http://www.e90post.com/forums/attach...2&d=1260829447 http://www.e90post.com/forums/attach...1&d=1209780865 http://bmwcoders.com/forum/3-er-8/bm...1-e92-e93-291/ http://technicpnp.com/menuDiagrams/d...e90_92_93.html http://www.musicarnw.com/page-2/ http://www.e90post.com/forums/attach...3&d=1169133185 http://www.e90post.com/forums/attach...1&d=1209780605 http://www.e90post.com/forums/showthread.php?t=641323 http://www.e90post.com/forums/attach...4&d=1278871872 http://www.e90post.com/forums/showthread.php?t=343673 https://www.bimmerfest.com/threads/e...n-752.1275694/ Base Stereo info (the ampless system) http://www.e90post.com/forums/showth...ighlight=graph Best System examples Base System Upgrades http://www.e90post.com/forums/showthread.php?t=1378833 base system wiring pre/post 3/09 https://www.google.com/url?sa=t&rct=...tDpLJPcGkw_ui_ http://www.e90post.com/forums/attach...1&d=1411521234 http://www.e90post.com/forums/showth...ghlight=Dotech http://www.bimmerfest.com/forums/sho...d.php?t=550771 http://www.e90post.com/forums/showthread.php?t=445266 http://www.e90post.com/forums/showthread.php?t=581379 http://www.e90post.com/forums/showthread.php?t=494299 http://www.e90post.com/forums/showthread.php?t=451941 http://www.e90post.com/forums/showth...ht=amp+upgrade http://www.e90post.com/forums/showthread.php?t=540954 http://f30.bimmerpost.com/forums/sho....php?t=1003810 http://www.e90post.com/forums/showth...1#post16679904 http://www.e90post.com/forums/showthread.php?t=822366 http://www.diymobileaudio.com/forum/...morel-jbl.html http://www.e90post.com/forums/attach...1&d=1411521234 http://www.1addicts.com/forums/showthread.php?t=634957 http://www.e90post.com/forums/showthread.php?t=495855 http://www.e90post.com/forums/attach...1&d=1411521234 http://www.1addicts.com/forums/showthread.php?t=634957 http://www.bilstereoforum.se/showthread.php?t=2356 http://www.e90post.com/forums/showth...ight=processor http://www.diymobileaudio.com/forum/...creations.html http://www.e90post.com/forums/showth...1#post16679904 http://www.e90post.com/forums/showth...&highlight=BSW Base System Upgrades http://www.e90post.com/forums/showth...1#post16679904 Last edited by ctuna; 04-15-2021 at 08:02 PM..
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04-15-2021, 08:31 PM	#9
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Use a Technic Harness it is designed for these Cars. You can use any 6 channel amp that supports differential Inputs or speaker outs from the Head Unit. Reprogramming your Head unit to Hi Fi might not be possible without a more expensive Icom cable. It's not really clear if the Sony is a true 6 channel amp with independent DSP on each channel. The Head unit is 4 out FR, FL,RL , RR regardless it's hardware The helix 86dsp is an 8 channel out amp with individual dsp on each out channel . You could go active with that or bridge channels for more power on a channel I believe. Bottom line you deciede in the setup which Input channels go to which output channels. Most 6 channel amps are 4 in 6 out . You program the source or use a switch to set that up for Inputs to designated outputs. Last edited by ctuna; 04-15-2021 at 08:53 PM..
	Appreciate 0 Quote

04-15-2021, 08:38 PM	#11
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	You can use any Amp that supports Differential low Inputs or Speaker level Inputs. You may have trouble programming the Head Unit to Hi Fi output levels without a ICOM cable . Using speaker level ins with DSP would allow you to re eq without reprogramming the Head Unit. You only use 4 Inputs to the amp that come of the Head Unit . Any good amp will be able to route the Front Input channels to separate output channel. You want the front doors and floors on separate channels both for power and eq. Its not clear what the Sony Can do I suggest you download the manual and take a look at there app for phone. It says 6 channel but I don't know it if really is with all the features. Last edited by ctuna; 04-15-2021 at 09:05 PM..
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04-15-2021, 11:18 PM	#13
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	connectors http://www.e90post.com/forums/showpo...9&postcount=19 http://www.e90post.com/forums/showth...ower+Connector connectors1 http://www.e90post.com/forums/showpo...9&postcount=19 I believe every Musicar upgrade at least upgrades the front door and floor speakers. If you are buying door speakers which you should buy them or acquire them as a component set. Technic's prices are listed on his website. The setup you show is and active setup that has the tweeters on a separate channel each. Mostly people would run one channel to each door with a passive crossover that comes with a component set . Then you would do the same for the rear speakers. If you have PDC and or gongs that go to the rear speakers you would want to do this especially if you recode to hi fi as when you do this it drops all channels from the head unit to 5 volt differential signals basically low level speaker outs. True DSP is like having a graphic or parametric equalizer on every channel with time delay. Plus all kinds of other control like filters and levels. Last edited by ctuna; 04-15-2021 at 11:30 PM..
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04-16-2021, 08:43 AM	#14
E92x7z Private First Class 21 Rep 129 Posts Drives: BMW e92 330 Join Date: Mar 2020 Location: Bulgaria iTrader: (0)	download the demo version ATF DSP PC-Tool 4.75a ... enter the settings and you will answer why Match PP86DSP is a compromise and after see DSP 2/3 jl fix 82 get analog signal and get optical to another DSP but in this time only Audiocontrol and Mosconi have DSP +BT module in aptX HD /helix have only aptX/
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04-16-2021, 03:24 PM	#16
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	In general you want a amp that will deliver at least 50 watts a channel at 4 ohms with a low distortion spec at that output. There are many multi channel amps that do that now. And now a lot of them have DSP. What is true DSP . It allows you to apply frequency filters of all kinds an allows eq on each channel like a parametric or graphic equalizer as well as delay . This is done through programming . When I see physical eq adjustments on the back of something it make me suspicious it's really DSP. dsp https://www.e90post.com/forums/showthread.php?t=1381697 https://www.e90post.com/forums/showthread.php?t=1384218 https://www.e90post.com/forums/showthread.php?t=1383653
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04-16-2021, 03:31 PM	#17
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Aptx only works with Android phone I believe. Didn't know there was and Aptx HD https://www.aptx.com/aptx-hd Looks like there are limited number of even Android phones that support Aptx HD and Sammsung is not one of them although it does Aptx. Last edited by ctuna; 04-16-2021 at 03:38 PM..
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04-17-2021, 02:33 AM	#18
E92x7z Private First Class 21 Rep 129 Posts Drives: BMW e92 330 Join Date: Mar 2020 Location: Bulgaria iTrader: (0)	you have many option ... i test 5 diferent DSP to my car in now i have 2 into the car .... need a know you need change front speakers and underseat "mids " my POV is a dsp + one 2 chanel D and one 4 chanel AB amp. ... you have more option man .. ONLY you have to know what you want aptX not a bad ... Last edited by E92x7z; 04-17-2021 at 12:57 PM..
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04-22-2021, 02:38 PM	#19
sfinxvc Enlisted Member 0 Rep 32 Posts Drives: BMW 328i xdrive Join Date: Apr 2021 Location: NY iTrader: (0)	So my friend tried to recode the HU for me but it seems it's not possible on my car. A profesional installer I messaged warned that it might not be possible to recode either. I suppose getting an aftermarket HU will also provide flat outputs? i.e. won't include the EQ the stock base system has, right? I suspect so, but just trying to confirm before I get a HU.
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04-22-2021, 10:40 PM	#20
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	A dsp can flatten the curve if you get a good one. In New York you should be able to find a coder with and Icom cable that can code the Head Unit. I would put up a post on the coding sub forum. Last edited by ctuna; 04-23-2021 at 12:01 AM..
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