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      02-08-2019, 11:29 PM   #23
jv92red
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Running audio and accessories when the car is running will be getting power from the alternator so ~14.2 volts + or -. When your car is not running you run audio and accessories off battery power, so ~12 volts. No need to worry about battery capacity while the car is running, the battery is just acting like a power buffer at that point. When the car is not running then capacity comes into play as you'll need to be careful how long you listen and at what levels and still be able to start your car.
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      02-09-2019, 12:26 AM   #24
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Quote:
Originally Posted by wyatth View Post
presumably you can set the “tune” on any of them?
Don't quote me on this as I don't have any experience with any of these Amp/DSP combo units but there may be a way once your in the DSP software to set your system parameters up (speaker sizes and locations) and hook up a UMIK-1 or other compatible USB microphone and perhaps the software can then listen and 'autotune' the system for you based upon the RTA readings? Worth digging into the manuals on these units to find out.
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      02-09-2019, 04:59 PM   #25
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https://www.e90post.com/forums/showthread.php?t=1456356


Read somewhere that Bimmertech has some hardware change on the PP82DSP that lets them get more out of it. Cant tell is BS or not, haha. Also read that maybe the Match Up7 BMW is solid 4 ohm while the others are variable?
Musicar sells a PP82DSP as well as their stage 1, again cant figure the differences between these amps. Annnnnd BavSound now coming out with their own. Sheesh
I think Im leaning to one of these over the JL XD600 for now, at least. Although there is a JL for $300 on E90post.
Good info on amps: https://f30.bimmerpost.com/forums/sh....php?t=1547243

So I think Im content with the OE HiFi underseat woofers. Final confirmation is if the ESP front mids, front tweeters (w/ crossovers), and rear shelf coaxials are all plug and play. Im pretty sure they are. I think the dispositive Q is if the amps can run channels at different ohms, or if that matters? The Match Up7 amp at 4 ohms with the EPS speakers would be the best bang for me, if they work together.

From Technic: EPS ... 4 drivers and coaxials are 4 ohms, tweeters are 7 ohms, woofers are 4 ohms..

If this all fits in, this would be equivalent to the BSW Stage 1 but an easier install with rear coax versus drilling for tweeters.
Also think Ive confirmed E92 speakers will fit an E90. Either way, HiFi cars do not have the same amount of speakers so Ill be looking for someone selling them individually or a set for a fair price given that not all can be used. So hard to find this accurate information, lots of misinformation and different terms being used!

So I think the final Qs are:
- Can the ESP component fronts run at 4 ohms? If so, the standard Match amp will do.
- Would ESP midrange or coax be better for the rear [shelf]? I know its fill so probably not important either way, but theyre probably priced the same used. Id think coax since BSW and EPS both add some form a tweeter to the rear.

Last edited by wyatth; 02-10-2019 at 01:18 PM..
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      02-10-2019, 11:30 AM   #26
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And more conflicting info:

https://www.m3post.com/forums/showth...7#post23274602

EPS (Individual audio) uses 7 ohm subs and 8 ohm front speakers (S752A).

No clue now about what equipment runs at what ohms. But the Up 7BMW Match amp with fixed 4ohms doesnt seem to fit anything but stock HiFi which it was made for, and of course after market speakers which run at 4.
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      04-12-2019, 08:05 PM   #27
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Focal

Anyone use the Focal direct replacements?
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      06-05-2019, 03:15 PM   #28
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Focal seemed expensive but good when I was searching.

Bumping this up .. would like to jump on some gear when it comes available. Still unclear on ohms.
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      06-05-2019, 06:19 PM   #29
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when i was younger, i spent $$$$$ on audio in my cars, and was also in the car audio industry. Nowadays I am constantly thinking to myself, "im glad i got out of the car stereo biz, the sound system in my m3 is so good from the factory, i would never bother upgrading." The EPS system in the m3 to me is a very nice sounding FACTORY sound system. Like the OP, the only time i feel it is kinda weak is on the freeway with the windows down. My way around that issue is to turn off the stereo, and push the gas pedal harder.

I guess the takeway for me is to upgrade to EPS system complete. just wait for a part out, or hollar at mpartsworldwide and see if they have a complete system from a salvage e90m3.
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      06-23-2019, 02:55 PM   #30
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Quote:
Originally Posted by wyatth View Post
And more conflicting info:

https://www.m3post.com/forums/showth...7#post23274602

EPS (Individual audio) uses 7 ohm subs and 8 ohm front speakers (S752A).

No clue now about what equipment runs at what ohms. But the Up 7BMW Match amp with fixed 4ohms doesnt seem to fit anything but stock HiFi which it was made for, and of course after market speakers which run at 4.
gents...

I have installed several PP62, PP82, PP86 and UP7BW's now.

first - I have created a pp cable for both 'base hifi' and 'bmw hifi' (type 676) for the non bmw amp's. works smooth and expirience so far is that installing any of the ATF DSP amplifiers will prowide the single biggest update you can get - especially compared to the effort from installing speakers etc.

soundwise I find the PP86 is my favourite from sound.
UP7bmw is however great in the F-series cars w. hifi sound from start. GREAT.

when it comes to impedance load it is also not sensitive! in our f31 it is in a system w. 8ohm, 4ohm and 2ohm speakers.
it works sweet. And the car is on competition level with several EMMA cars.

I'm running the PP86 in my daily E91, where it is doing a 3 way front + a dvc 10" - from sound I'm impressed. Not as good as my Helix Psix II DSP, but great!

conclusion - adding an amplifier like the JL is OK, but once you try the DSP you realize that you are now on next level...

btw - before you run out to change speakers, try to add a good passive x-over on the hifi door speakers + add the much needed right amount of damping material on doorcards and door plates = most will be surprised what you can get from the philips speakers..
however, the under seat woofers are crap and must be changed

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      07-02-2019, 04:30 PM   #31
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Thanks for the feedback, certainly helpful! I think I'll buy some time with the stock HiFi speakers and will just start with an amp. Though the EPS speakers/grills look sweet.
Of the amps you've compared, which would you say is the best from a PnP perspective? I'm not technically savvy and am not an audiophile, so the easiest to install and mostly tune will get some bonus points.
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      07-30-2019, 06:35 PM   #32
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Bumping this up - anybody have any recs for the best PnP amplifier?
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      07-30-2019, 11:51 PM   #33
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Quote:
Originally Posted by wyatth View Post
Bumping this up - anybody have any recs for the best PnP amplifier?
I am no audio person, so don't quite follow the technical information many have shared here. But about the amp, I have EPS + ghost subs, upgraded to what I believe is the F8X cars' HK amp, and came away beyond satisfied.

The improvement from going to the F8X amp is pretty dramatic, from the sheer volume, bass, to the level of clarity and newly obtained range that simply weren't showing before. And for my EPS equipped car, the switch was "almost" plug and play. Mike @ BPM did the swap for me. Again, I dont know anything about electronics, but it took less than 10 minutes from start to finish, that's with him juggling customer calls in between. I recall there's something about the connector from the F8X amp that needs to be changed in order to mate with E9X EPS system's wire, but that was it.

if you ever end up going the EPS speakers upgrade route, and can source this amp used say from junkyard to keep the cost down, it's a worthy consideration
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      08-06-2019, 12:07 AM   #34
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Thanks for the input, Ill keep that setup in mind!
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