[roham22]

Hello
My car model is E90 325i 2006 and i think vehicle audio system is mc73.
I have 2 subwoofers,4 midranges,4 tweeters.and 1 black amplifier and i think its model is (hifi).
my question is that, why don't have equalizer settings to arrange the sound better?
i only have base and treble.
Do I need to update it by PC, or change anythings?

[ctuna]

Nope you are describing the 676 hi fi system .
It doesn't come with an equalizer and there is no way
to add a stock one. And it wouldn't help that much if
you did because all the components are weak in that system.
Top Hi Fi option 677 in that year has one but the wiring and amplifier
are totally different.

Go for and aftermarket solution if you want something better.
I would suggest a Helix 86dsp or BMW7 amp/dsp and new speakers
in the front at least.

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 system wiring pre/post 3/09
https://www.google.com/url?sa=t&rct=...tDpLJPcGkw_ui_
Base System Guide
http://www.e90post.com/forums/attach...5&d=1493273253

[roham22]

Originally Posted by ctuna

Nope you are describing the 676 hi fi system .
It doesn't come with an equalizer and there is no way
to add a stock one. And it wouldn't help that much if
you did because all the components are weak in that system.
Top Hi Fi option 677 in that year has one but the wiring and amplifier
are totally different.

Go for and aftermarket solution if you want something better.
I would suggest a Helix 86dsp or BMW7 amp/dsp and new speakers
in the front at least.

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 system wiring pre/post 3/09
https://www.google.com/url?sa=t&rct=...tDpLJPcGkw_ui_
Base System Guide
http://www.e90post.com/forums/attach...5&d=1493273253

I have optic fiber cable that is for CD changing, can I omit the CD changer and use its optic for top-hifi amplifier ? With that MC-73 ?
Considering changing all speakers and sub woofers and also Changing the wires from amplifier through bands.

[whyzee125]

Originally Posted by roham22

I have optic fiber cable that is for CD changing, can I omit the CD changer and use its optic for top-hifi amplifier ? With that MC-73 ?
Considering changing all speakers and sub woofers and also Changing the wires from amplifier through bands.

Logic7 can be retrofitted but you need a whole different harness, coding, speakers, rear speaker wiring, etc.

[ctuna]

Yeah you can retrofit Logic 7 at great expense and time if you
are real accomplished and by putting a the Logic 7 wire harness
in and reprogramming the head unit but it's really not worth it.
Kind of wasted time and money because that system is really not that good.

https://www.e90post.com/forums/showthread.php?t=1847099

There are more logic 7 DIY's than this one .
I don't get why somebody would want to do it though.

You also should understand the Most System in which modules are added on .

Logic 7
https://www.e90post.com/forums/showthread.php?t=1056432
https://www.bavlogic.com/?p=3729
https://www.bavlogic.com/?tag=loop
http://www.bmwlogicseven.com/?p=3837
http://www.bmwgm5.com/
https://www.e90post.com/forums/showt...5#post24455335
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.google.fr/url?sa=t&rct=j&...slMu2A&cad=rjt
https://www.bmwgm5.com/Logic7_E90_91_92_93.htm
http://www.bimmerfest.com/forums/sho...d.php?t=982666

http://www.e90post.com/forums/attach...1&d=1209780605
Most
http://www.e90post.com/forums/showthread.php?t=727663
http://www.e90post.com/forums/showthread.php?t=347222
https://www.google.com/search?q=BMW+...VCkMqy2aCK09M:
http://www.1addicts.com/forums/showt...php?p=19256760
https://www.teacremotes.com/bmwgm5/
Diagnostic Manuals Inpa/Ista D
https://bimmerprofs.com/diagnostics-inpa-part-1/
https://www.google.com/url?sa=t&rct=...7x8H3pN8h1fMuF
https://carmod.ru/files/icom/istad_en.pdf
https://www.e90post.com/forums/showthread.php?t=1681573
https://www.bimmerforums.com/forum/s...-P-actually-do
primary links
https://www.bimmerfest.com/forums/at...9&d=1539905743
https://www.e90post.com/forums/showthread.php?t=1681573
https://www.bimmerfest.com/forums/at...1&d=1590283589
https://www.nathansbmwworkshop.com/b...or-dean-videos

[roham22]

Originally Posted by ctuna

Yeah you can retrofit Logic 7 at great expense and time if you
are real accomplished and by putting a the Logic 7 wire harness
in and reprogramming the head unit but it's really not worth it.
Kind of wasted time and money because that system is really not that good.

https://www.e90post.com/forums/showthread.php?t=1847099

There are more logic 7 DIY's than this one .
I don't get why somebody would want to do it though.

You also should understand the Most System in which modules are added on .

Unfortunately, I am in Iran and we have been heavily embargoed and we do not have any aftermarket services.
On the other hand, there is very little equipment for upgrading here. That's why I decided to use the L7 sound system and my cd73 and by changing the amplifier and the band, and at least an equalizer I can achieve the result.
And please consider that hifi is also very practical.What about using Match up 7BMW amplifiers ?
Is it worth to install much more expensive?

[roham22]

Originally Posted by whyzee125

Logic7 can be retrofitted but you need a whole different harness, coding, speakers, rear speaker wiring, etc.

yeah i know.

tnx alot

[ctuna]

Helix amp/dsp will produce a superior but you need to upgrade the front
speakers to . I would get at least the 86dsp or the BMW7 . Way better
amp specs than BMW delivers.