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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > How can I downgrade from EPS to Logic7?



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      08-12-2019, 02:18 PM   #1
whyzee125
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How can I downgrade from EPS to Logic7?

As the title states, I have EPS/Individual Audio and do not like it at all. I'd like to have Logic7 back like I had in my old car. As I understand it, both use the same connector and utilize the MOST ring. I've heard that EPS speakers are vastly superior to Logic7 speakers so I don't mind keeping my speakers if that will work but I want the Logic7 amp/processor rather than the dirac/EPS. Is it a simple matter of swapping amplifiers and coding the head unit for Logic7? I would happily swap to Logic7 speakers as well if this is still feasibly doable. Please let me know if you have any insight on this. Also, I'd be interested in trading equipment if someone else prefers the EPS. It is certainly crisp and powerful, but the sound is not for me.
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      08-12-2019, 05:21 PM   #2
ctuna
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I believe the amps are interchangable as one of the more
popular BMW aftermarket online places offers the EPS amp
as plug and play upgrade.
Although I haven't heard the EPS is has more power so I can't
see why you would want to do this.
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      08-13-2019, 07:22 PM   #3
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Quote:
Originally Posted by whyzee125 View Post
As the title states, I have EPS/Individual Audio and do not like it at all. I'd like to have Logic7 back like I had in my old car. As I understand it, both use the same connector and utilize the MOST ring. I've heard that EPS speakers are vastly superior to Logic7 speakers so I don't mind keeping my speakers if that will work but I want the Logic7 amp/processor rather than the dirac/EPS. Is it a simple matter of swapping amplifiers and coding the head unit for Logic7? I would happily swap to Logic7 speakers as well if this is still feasibly doable. Please let me know if you have any insight on this. Also, I'd be interested in trading equipment if someone else prefers the EPS. It is certainly crisp and powerful, but the sound is not for me.
You would probably want to replace the amp and the subs with logic 7 variants. People doing NBT Evo retrofits would love your subs. They are 8ohms and pair well with the F series amp.
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      08-13-2019, 09:02 PM   #4
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Quote:
Originally Posted by whyzee125 View Post
As the title states, I have EPS/Individual Audio and do not like it at all. I'd like to have Logic7 back like I had in my old car. As I understand it, both use the same connector and utilize the MOST ring. I've heard that EPS speakers are vastly superior to Logic7 speakers so I don't mind keeping my speakers if that will work but I want the Logic7 amp/processor rather than the dirac/EPS. Is it a simple matter of swapping amplifiers and coding the head unit for Logic7? I would happily swap to Logic7 speakers as well if this is still feasibly doable. Please let me know if you have any insight on this. Also, I'd be interested in trading equipment if someone else prefers the EPS. It is certainly crisp and powerful, but the sound is not for me.
The logic 7 amp will have a hard time driving the EPS speakers
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      08-13-2019, 09:31 PM   #5
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Thanks for the responses! I've been confused about whether the EPS speakers would work with the Logic7 amp and it seems like it would be best to just convert the whole system to Logic7. I found one person who is interested in doing the swap with me so all the info I can get would be awesome!
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      08-13-2019, 09:35 PM   #6
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Quote:
Originally Posted by ctuna View Post
I believe the amps are interchangable as one of the more
popular BMW aftermarket online places offers the EPS amp
as plug and play upgrade.
Although I haven't heard the EPS is has more power so I can't
see why you would want to do this.
Would you mind PMing me the place you're talking about? The EPS isn't a bad system and is super crisp but they sound very different and I prefer the Logic7.
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      08-13-2019, 09:35 PM   #7
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Quote:
Originally Posted by whyzee125 View Post
Thanks for the responses! I've been confused about whether the EPS speakers would work with the Logic7 amp and it seems like it would be best to just convert the whole system to Logic7. I found one person who is interested in doing the swap with me so all the info I can get would be awesome!
Personally, if you had the $$$, I'd just gut the entire system but keep the EPS speakers. Probably get rid of the EPS sub's under the seats.

There are surround sound processors and amps out now that are far superior to the logic 7 amp.
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      08-13-2019, 10:20 PM   #8
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Simply swap all the speakers and the amp with that of a Logic 7 setup, the code your amp and head unit for 676.

Very easy, all plug and play.

FYI I'm selling my L7 amp and underseat subs as I completed my EPS retrofit
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      08-13-2019, 10:21 PM   #9
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Quote:
Originally Posted by Nickco43 View Post
You would probably want to replace the amp and the subs with logic 7 variants. People doing NBT Evo retrofits would love your subs. They are 8ohms and pair well with the F series amp.
Which F series amps would you recommend? I picked up an EPS amp to drive my EPS speakers, and I noticed the L7 amp was very subpar in driving the subs due to the impedance.

I wouldn't mind grabbing an F series spec amp if it's actually an upgrade from the EPS one.
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      08-14-2019, 05:31 AM   #10
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As stated you may want to just gut the entire system and source a set of good speakers and head unit and tune it yourself. I got rid of everything in my Hifi system and tried the EPS speakers and the Logic 7 with my amp and deck. Didn't like them at all. I have an Alpine single din deck and Focal speakers, with a Boston Acoustics sub in the trunk. Once I find some Focal underseats for true midbass I will be golden. If you had Idrive then you are probably doing the best for your system with the Logic 7 speakers and amp. You could keep the EPS stuff and get a sound processor I suppose.
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      08-14-2019, 07:00 AM   #11
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I'll +1 what others are saying. The EPS drivers are good quality parts, it's likely the processing in the EPS sysyem that you don't like. Just swapping amps for an L7 may not work simply because the impedance and frequency response of the EPS/L7 drivers will be different, so whatever processing is happening in the L7 amp will likely not be good for the EPS drivers. Might be worth it to try and see what happens if you're going to swap anyway, try just the amp, first.

And if you're a tweaker or would like to get more involved, like others have stated, keeping the EPS drivers and going aftermarket with the processing and amplification could result in a great system. This takes quite a bit(lot) of work, though, tuning and dialing everything in.
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