[bluewater328]

Originally Posted by lordbmw

I have the base sound system (not HiFi, and not Logic 7) with no tweeters at all.

So in total I see 4 speakers. 2 on the door (I have a coupe) and 2 on rear side panels. Not sure if I have any under the seat but I doubt it.

The stock speakers sound just dreadful !!!

So anyhow, Bavsound sells a kit that includes 4 speakers, 2 of which have integrated tweeters. So the kit does not include separate tweeters.
https://www.bavsound.com/Stage-One

Is this a good kit for $397?

Looks like I can install it myself though it might take some time. A few hours perhaps.

They are having a big sale now on open box. Might want to check that out if youre in the market.

[lordbmw]

Thanks for all the replies.

I checked under the driver seat and there does appear to be at least a grill for a possible speaker there (photo attached). Don't know if an actual speaker is there. Havne't checked passenger side yet.

Does anyone know what type (and size) of speaker that would be ?

Is it sort of like a poor man's sub?

[ctuna]

All these questions you are asking have answers in the links
I posted.
The whole base system is some kind of terrible joke that BMW
played on its customers. There 6.5 inch and they are glued
into the enclosures. Please read the following

https://www.e90post.com/forums/attac...1&d=1411521234

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

[lordbmw]

Originally Posted by ctuna

All these questions you are asking have answers in the links
I posted.
The whole base system is some kind of terrible joke that BMW
played on its customers. There 6.5 inch and they are glued
into the enclosures. Please read the following

https://www.e90post.com/forums/attac...1&d=1411521234

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

Thanks for the links.

In the first link (upgrade guide), it uses a JL CleanSweep instead of recoding the HU to disable the low/high frequency boosting.

Any reason to choose one method vs the other?

[kaigoss69]

Originally Posted by lordbmw

Thanks for the links.

In the first link (upgrade guide), it uses a JL CleanSweep instead of recoding the HU to disable the low/high frequency boosting.

Any reason to choose one method vs the other?

Recoding is the way to go. Would you rather drink water from a spring, or pee run through a Brita filter?

[ctuna]

If you read all the links I listed in response number 2 it will
give you more knowledge than most so called auto stereo
shops have about these systems.

The cleansweep is out of production as are a lot of things mentioned
with time stamps over 5 years old.
Best to use a DSP/amp now to accomplish the same task .
But it is more correct to recode and run one of these with the flat
pre amp signals. If you do this you absolutely need and amp
and a 6 channel one to cover all speaker locations.
However if you have a newer car you may need an ICOM cable
to make this change.

Bimmertech Helix 86dsp kit for the base system and a set of
new front speakers for front doors and floors is recommended.
Especialy if you are new to modifying stereo's

[bluewater328]

Originally Posted by kaigoss69

Recoding is the way to go. Would you rather drink water from a spring, or pee run through a Brita filter?

Oddest analogy ever...

[mweisdorfer]

Originally Posted by lordbmw

I understand for my particular sound system (Base unit), the high and low frequencies were boosted to compensate for the lack of tweeters and sub.

When I get my speakers upgraded, do I need to do anything to anything about this artificial boosting ?

If you want tweeters, buy the sails and have the shop install them.

https://www.e90post.com/forums/showthread.php?t=1041141

Probably a different part number for a coupe vs a sedan for sure.

But you get my point. These parts can easily be bought.

[lordbmw]

Originally Posted by mweisdorfer

If you want tweeters, buy the sails and have the shop install them.

https://www.e90post.com/forums/showthread.php?t=1041141

Probably a different part number for a coupe vs a sedan for sure.

But you get my point. These parts can easily be bought.

Seems like if you really just want tweeters then you can just do as these guys did:

I don't know if it'll sound good because there's no crossover right?

Looks like they played around with the equalizer to reduce high frequency.

[mweisdorfer]

Originally Posted by lordbmw

Seems like if you really just want tweeters then you can just do as these guys did:

I don't know if it'll sound good because there's no crossover right?

Looks like they played around with the equalizer to reduce high frequency.

The only time I am aware of that you need a cross over, which is a separate piece of equipment in the door assembly, is when you up grade to the BMW Individual Audio (EPS) speakers. The logic 7 speakers do not have a separate cross over installed in the doors.

If you are looking for a cheap/ good set of speakers, that's the route I'd go. I'd purchase a set of logic 7 speakers for around $250.00.

In fact, I have a set that I'd let go for around $200.00, that I know will work. The only thing is you'd have get a speaker grill for the center channel and wire it up the harness.

I don't think you gave to overcome the MOST Canbus system being that you have a base system. Therefore, you can get any double din system you want really, as long as it fits.

The logic 7 speakers are only good for 70w per channel at 2ohm. So, keep that in mind.

[lordbmw]

How do I disable the base unit frequency boosting (compensation) ?

I understand I need to recode it but not sure what's involved.

TIA.

[ctuna]

When you recode to Hi Fi it flattens the output of the overboosted
hi frequencys of the front channels (read the links .)
It also drops the outputs from the head unit on all channels to
5 volts for use as differential pre out signals.

here is another
http://www.e90post.com/forums/showth...ighlight=graph

[lordbmw]

Originally Posted by ctuna

When you recode to Hi Fi it flattens the output of the overboosted
hi frequencys of the front channels (read the links .)
It also drops the outputs from the head unit on all channels to
5 volts for use as differential pre out signals.

here is another
http://www.e90post.com/forums/showth...ighlight=graph

So it looks like I can use this NCS EXPERT program to recode it to Hi-Fi mode.

[ctuna]

You may need and Icom cable to do it rather than a simple
K/D can cable . Ncsexpert is the correct program though.
Cars made after 3/07 seem to need an Icom cable for programming
modules that are attached to the Most Bus this seems to include
the Head Unit. There has never been a hard answer as to why.

[lordbmw]

Originally Posted by ctuna

You may need and Icom cable to do it rather than a simple
K/D can cable . Ncsexpert is the correct program though.
Cars made after 3/07 seem to need an Icom cable for programming
modules that are attached to the Most Bus this seems to include
the Head Unit. There has never been a hard answer as to why.

Do I have a MOST Bus ?

[ctuna]

Do you have bluetooth phone , Sat Radio , Sos ,
USB if do you have a most Bus almost all US BMW's do.
But that doesn't have anything to do with the base system
or the Hi Fi system as far as stereo is concerned those
are analog systems.
Look for the modules behind the passenger seats under the
trunk floor.

http://www.e90post.com/forums/attach...2&d=1260829447

[GertrudRouthier]

Bavesound kit is looking good but I am not sure how much improvement in sound quality it will offer because I never used it. However, if you ask about my experience then last year, I installed Focal Integration IC 100 speaker and yes, it really helped to upgrade my car's sound system. The kit price is also very reasonable as compared to other options.

Withal, the size of the speaker will matter and with increment in size and installation difference, the price will also vary. You can see many other focal speaker options here ( https://99carstereo.com/focal-car-speakers-reviews/ ). Moreover, if you have good budget then you can also consider Focal component speaker kit and Pioneer TS-M650PRO Mid-Range speakers could also be reliable options.