[Beisofmarko]

Hey,

I've been thinking about upgrading my audio system even more.
I have 06 E92 with newer CCC HU and my current setup is:
- Base stereo system
- Jehnert flatline kit
- Helix match pp82dsp
- Technic 4/6 harness

I've been able to flatten the factory curve with pp82dsp to pretty decent to my ear.
And now i'm in progress of making a sealed box for 1x 12" rockford t2d212.

My aim is sound quality over maximum pressure.

Questions:

1) I run front as 3 way active and i have 2 channels left on pp82dsp for adding
another amp for subwoofer, i fear that front will be too quiet to match the sub.
atleast the way it is now, Is there anyway i could add third amp to this system?
Is it even possible and if yes, what it would require in terms of hardware?
Then i could think of adding jehnert door panels.

2) I don't have 6FL option so i ran my music currently through kinivo btc450
that's connected to armrest aux + cigaret lighter.
With this method music plays louder than with aux cord but lacks "dynamic"/bass big time?
- Is there really better ways for "reasonable" effort?
- I've been thinking about aux input capacitor and resistor removal, thoughts?

Base system is nightmare to begin with, especially if i wan't to keep OEM HU + look.
But i'll get there... one day.

Thanks!

[ctuna]

As far as usb and bluetooth are concerned
(Head Unit must support CDC for the following to work)
Read from the beginning of he following thread.

http://www.e90post.com/forums/showth...4#post23244354

This above is cheap and its got great audio quality to.
You get usb and sd card playback plus streaming bluetooth and phone if you need it . The usb and sd card playback sound as good as anything you
can put on a disk . bluetooth playback is good to and you get steering wheel
controls. It lists the songs the same way you would from the single disk
player on a pro radio. Bluetooth streaming is only foward and backward
to the next track . Switching between sources requires a double tap on the Pro Radio on off button that is the only thing a little clumsy about it.
(YES steering wheel controls work)

AVOID the BMW AUX if you want good sound.

If your goal is sound quality I don't see why you would even bother with
subs.

The Jehnert xe-200's are not lacking in bass and they are so accurate
and smooth. Below 50z you are just massaging your but and upsetting
the neighbors.

You might want to recode to Hi Fi and re balance the the 82dsp.
Have you tuned it yourself? The underseats might sound better with
a tad more power depends on how loud you listen to it.
I believe the 82dsp is 55 per channel.

[Beisofmarko]

Originally Posted by ctuna

If your goal is sound quality I don't see why you would even bother with
subs.

The Jehnert xe-200's are not lacking in bass and they are so accurate
and smooth. Below 50z you are just massaging your but and upsetting
the neighbors.

You might want to recode to Hi Fi and re balance the the 82dsp.
Have you tuned it yourself? The underseats might sound better with
a tad more power depends on how loud you listen to it.
I believe the 82dsp is 55 per channel.

Thanks for the link, will look into that for sure.
How would i check if my HU supports CDC?
I have newer model of CCC idrive with "better internals".

Adding a sub will be test if it brings the "fullness" that i'm looking for.
This speaker had great reviews on accuracy and overall sound quality
and i have had it laying on the garage for few years so it's kinda free test,
will see how it works out.

Yes i did tuning myself with the pp82dsp tuning videos you provided me last year i think.
I got rid of the peaks that hurted ears and curve looked much better,
i'm sure it's not close to perfect yet as i'm nowhere close to professional with these.

I wonder if coding to Hi-Fi would work out better and change the quality of sound?
Also would re-coding require some hardware change, like would it still work with
the technic 4/6 stereo harness or would i need a different harness or?

I know jehnerts are great but i'm not sure if my problem is in the pp82dsp settings,
bluetooth streaming via bmw aux line or underpower (yes it has 55watts per channel).
Sound quality is pretty nice i'd say but there are literally no bass/punch at all
untill i turn up the volume from HU to the max and from the phone to 1 from max.
My gains from the amp are: tweeters +0db, mids +0db, underseats +2db and
everything on middle (+0db) on HU).

Thanks!

[ctuna]

There is a big bluetooth streaming thread here.
The basic conclusions reached are the Aux sucks
you can improve the sound a little buy using a DAC
and still go through the Aux .
I did a comparison myself using the same files on my
phone and a CD I burned conclusion is is it cuts the highs
and lows. (you might want to do this to)
My TCU broke so that was enough to make me try one
of these bluetooth boxes and its well worth the money .
I believe the CCC is the first version of the Idrive/nav in the
e9x and it did have the CDC option.
You should be able to see the CDC option in one of the
CCC files.
Or it may say something about CDC prep if you check with a Vin
checker.

I believe this was the thread

https://www.e90post.com/forums/showt...ight=bluetooth
or this
https://www.e90post.com/forums/showthread.php?t=1002984

I though that helix had some input devices for bluetooth or aux on some
of there devices to.

[ptpending]

arent pp82dsp have separate RCA output for sub amp ?

[Beisofmarko]

Originally Posted by ptpending

arent pp82dsp have separate RCA output for sub amp ?

Yes it has, but i wish it had 2 sets of rca outputs so i could throw 2 extra amps
for doorboards and a sub.
Not sure what kind of amp i should have for this setup to work out,
guess i'll need to choose between adding a sub or doorboards.
Doorboards would be more ideal for my build if i just got the underseats
to have some punch in them..
Maybe 55watts is too low, helix p six dsp would nice but it's 6 channels
so couldn't run front as 3-way active + another amp for doorboards?

Also after reading links above i noticed that my kinivo 450btc supports aptx
but i don't have aptx codec selected on my phone (galaxy s10),
will check today if it makes any difference.

Maybe i'll have to burn a CD as ctuna suggested and see if lacking lows
come from music source or underpower.

Also if i went and recode to Hi-Fi now, would it require a new harness between HU and pp82dsp?
i currently have technic 4/6 stereo harness or would it work with it?

[ctuna]

If you amp the rears you would have to at least intercept or run
wiring to those and use the rear channels as the input to an amp. If you go active at the doors you need another set of wires to run to the doors. (From whatever amp you used of
course)

Helix has the V8 which has more power per channels or the 6-dsp if you were
thinking of changing.

From what I understand using aptx is automatic if you have it in both devices.

There was a review of the doorboards here someplace you need to run two
decently powered channels to each door at least.

[Beisofmarko]

Originally Posted by ctuna

From what I understand using aptx is automatic if you have it in both devices.

There was a review of the doorboards here someplace you need to run two
decently powered channels to each door at least.

Yeah, i just tested and it changes automatically codec to aptx when i connect the phone.

If i was to get doorboards the plan was to have current pp82dsp to run front
as 3-way active and the channels G/H line outputs to another 2-channel ~300watts/rms amp
that would run 1 channel to each door passive crossover powering the 3x 6,5" speakers.

I just did some testing and if i give few clicks bass from HU, the bass and punch comes there
but it's distorts like crazy right away..
Does this support my thinking of having too little power to underseats?

I saw that there are bluetooth streaming modules for certain helix amps
that promise CD quality sound, but unfortunately pp82dsp doesn't support that module..

If i were to "rebuild" my whole system from the scratch with goal of having
Jehnert flatline kit + Jehnert doorboards and having HU coded to Hi-Fi.
What kind of amps & harnesses i should get?
budget being what it takes at this point.

Thanks

[ctuna]

https://www.e90post.com/forums/showt...ght=doorboards

https://www.e90post.com/forums/showt...hlight=Jehnert

[Beisofmarko]

Yeah, i'm leaning towards doorboards even more..
That would be simple as adding doorboards, running some wires and adding
amp for them.

After coding to Hi-Fi:
"With Amps, if you are feeding with a signal from the HiFi coded head unit, you must use an amp that will accept balanced differential inputs"
- How do i know if amp works like that, i browsed some and can't find any
that states directly that?

- I assume pp82dsp works with that, does the amp for doorboards that connects
to pp82dsp have to accept balanced differential inputs aswell or
can it be any 200-300wrms 2-channel amp?

[ctuna]

don't you already have your 82dsp hooked up therefore
proving it works . I assume if you bought the 2/4 harness
the rear channels are still off the radio.
Also I would assume if you would be using your existing 82dsp
for all Inputs from the head unit would go to the 82dsp
so you could dsp it then feed it to an aftermarket amp
with whatever is most appropriate signal out of the Helix.
I thought most of the Helix's have one or two extra dsp
channels used for either feeding subs or whatever.
V8 and 6 dsp come to mind.

Lot's of people use Helix and Jl products here we know
they work.
Be aware you have to cut out our existing lower panel and
I don't know how hard is is to route new wires through the
door connections.

Doesn't look like it would be too much trouble just to add wires
to the existing Harness .

[Beisofmarko]

Yes i have pp82dsp hooked up and it works but i meant to say
that if i went to get recoded my current base system to Hi-Fi
to have easier starting point tuning the system.
Wouldn't this quote from the audio upgrade thread take place:
"With Amps, if you are feeding with a signal from the HiFi coded head unit, you must use an amp that will accept balanced differential inputs"
And that is why i'm asking if i need to worry about pp82dsp working as i don't know if pp82dsp accepts this
and if it also affects the amp that i'm going to add to pp82dsp for doorboards.

I have technic 4/6 stereo harness currently, i'm running jehnert flatline kit
as 3-way active, i have no speakers at rear.
I have channels G/H unused currently waiting for another amp.

So the end game what i'm thinking right now would be something like:
- recode to Hi-Fi (need to know if stereo 4/6 harness still works or if i need a new Hi-Fi one after?)
- pp82dsp powering flatline kit as 3-way active (maybe upgrading to v8 or something in the future to get a bit better power to speakers)
- Some 2-channel 200-300wrms @4ohm amp for doorboards passive crossovers hooked up to pp82dsp after i figure out which amp is suitable.

Thanks for the patience, i appreciate every bit of guidance!

[ctuna]

There is nothing magic about the outputs they are just
reduced speaker out's that go down to 5 volt swing instead
of a speaker level swing. Its still the same signal out of the pro
head unit just at a reduced level and at an even eq.

Other people here have used the 82dsp on Hi Fi systems
no problems reported.

[Beisofmarko]

Originally Posted by ctuna

There is nothing magic about the outputs they are just
reduced speaker out's that go down to 5 volt swing instead
of a speaker level swing. Its still the same signal out of the pro
head unit just at a reduced level and at an even eq.

Other people here have used the 82dsp on Hi Fi systems
no problems reported.

Okay glad to hear, so amp should work!

Only thing still bothering me is my current technic harness as i would like to get
HU recoded to Hi-Fi. I have the stereo 4/6 harness without rca terminations,
BUT with the pp82dsp ready connectors.
Would my system work with the same 4/6 stereo harness after coding to Hi-Fi like it should,
just with the flattened-eq (low level inputs)?
What is written at technic's site throws me off as i don't have rca terminations
on my harness and i couldn't even connect a pp82dsp with them?

"Coding of the OEM HU/iDrive to output HiFi (balanced, low level outputs) would not require a processor/de-EQ,
but it will require balanced-inputs aftermarket amps and RCA termination."

I also got recommendation for amps to doorboards from jehnert:
2-channel amp, 1-channel per passive crossover feeding 3x 6,5"
- Audio System X-330.2 2x330wrms @4ohm
- Mosconi Gladen One 130.4 bridged 2x350wrms @4ohm
Any experience/thoughts with these brands, both new for me?

Edit: Technic replied to my email and confirmed that old 4/6 base stereo
harness works after coding to Hi-Fi so no need for different harness.

[ctuna]

Mosconi's used to be mentioned in high regard here.

I would check with the manufacturer for peace of mind
and load the manual and check it. The better brands accept
any type of Input.

[Beisofmarko]

Originally Posted by ctuna

Mosconi's used to be mentioned in high regard here.

I would check with the manufacturer for peace of mind
and load the manual and check it. The better brands accept
any type of Input.

I've looked into few different manuals and i don't see any mention
about "type of input" on any of these?
What i should be looking for, i only seem to find Input sensitivity.
Is that right one?

Hi-Fi coded HU being ~5V balanced outputs, should i have amp with
input sensitivity matching in that range?
the X-330.2 for example has input sensitivity of 200mV - 8V.
So that should work? or am i totally lost.