Upgrade: Start Loving your Bose
#301
Nordschleife Master
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Really doesn't count if you did not do the install yourself -- having an installer do it for you is just plain cheating!!!
Last edited by Porsche_nuts; 03-19-2016 at 08:25 AM.
#304
Race Director
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Originally Posted by Duke I
Is the capacitor required?
#305
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You are correct.
As for digital files, 24bit Studio Masters at 192kHz are among the best you can get (without too much effort).
However, they need to be down converted to 48kHz wav files, to play on our Bose systems (because we can't play FLAC).
Since wav files are very inconvenient, you are better off converting to 48kHz mp3 at 320kbps.
I stopped using comercially ripped mp3 and will rip my own from CD or convert from master files.
I use a good software and choose 320kbps, CBR, Joint Stereo & Bit Reservoir.
With CD ripping use 44kHz sample rate.
With Master converting use 48kHz or 44kHz, depending which divides evenly from the source masters sample rate.
Good mp3 files, can sound real nice.
I think mp3 (and our Bose systems) got a bad rap from all the poor quality mp3 encodings being distributed.
As for digital files, 24bit Studio Masters at 192kHz are among the best you can get (without too much effort).
However, they need to be down converted to 48kHz wav files, to play on our Bose systems (because we can't play FLAC).
Since wav files are very inconvenient, you are better off converting to 48kHz mp3 at 320kbps.
I stopped using comercially ripped mp3 and will rip my own from CD or convert from master files.
I use a good software and choose 320kbps, CBR, Joint Stereo & Bit Reservoir.
With CD ripping use 44kHz sample rate.
With Master converting use 48kHz or 44kHz, depending which divides evenly from the source masters sample rate.
Good mp3 files, can sound real nice.
I think mp3 (and our Bose systems) got a bad rap from all the poor quality mp3 encodings being distributed.
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fluguy (10-08-2020)
#307
Rennlist Member
Thread Starter
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DrCGuerra, unfortunately the Bose does not play ALAC.
I have some 24bit WAV files (converted from FLAC), for my HQ Content, but I found a 24bit FLAC to 320k mp3 conversion sounds plenty good also.
What head unit did you use for your full aftermarket install?
Someday I hope to ditch the Factory PCM.
Master John, this product looks incredible.
Seems like it would be an easy retrofit (if ditching the PCM).
I have some 24bit WAV files (converted from FLAC), for my HQ Content, but I found a 24bit FLAC to 320k mp3 conversion sounds plenty good also.
What head unit did you use for your full aftermarket install?
Someday I hope to ditch the Factory PCM.
Master John, this product looks incredible.
Seems like it would be an easy retrofit (if ditching the PCM).
Last edited by lunarx; 03-25-2016 at 12:53 PM.
#308
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Audison Prima 8.9 accepts high level inputs, so speaker outs from Bose amp can be plugged into this unit direct, then rerouted to speakers. No need to change PCM 3.1. You will have active channels/speakers tailored to your liking. I will do this upgrade and post shortly. Audison unit is about $750 shipped from Italy.
#310
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DrCGuerra, unfortunately the Bose does not play ALAC.
I have some 24bit WAV files (converted from FLAC), for my HQ Content, but I found a 24bit FLAC to 320k mp3 conversion sounds plenty good also.
What head unit did you use for your full aftermarket install?
Someday I hope to ditch the Factory PCM.
Master John, this product looks incredible.
Seems like it would be an easy retrofit (if ditching the PCM).
I have some 24bit WAV files (converted from FLAC), for my HQ Content, but I found a 24bit FLAC to 320k mp3 conversion sounds plenty good also.
What head unit did you use for your full aftermarket install?
Someday I hope to ditch the Factory PCM.
Master John, this product looks incredible.
Seems like it would be an easy retrofit (if ditching the PCM).
https://rennlist.com/forums/991/9208...o-upgrade.html
#311
Rennlist Member
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The best I could get out of the PCM unit (Bose) was 16:44 WAV. I tried several variants of FLAC and WAV, 16:44 was all that works - of course I didn't expect DSD to work, and it didn't ![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
My car is a 2013, PCM is at 2.74 (I think)
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
My car is a 2013, PCM is at 2.74 (I think)
#312
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That is the maximum you can get from a CD so you, at least, get CD quality and that usually is between 600-800kbs vs. 320kbs. So your quality will be nearly 2-2.5 times the resolution. Some would argue that you will not be able to tell that much of a difference between 320 vs. 600+ but you can. It's not like doubling HP in a car but it will make a difference, IMO.
#313
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Audison Prima 8.9 accepts high level inputs, so speaker outs from Bose amp can be plugged into this unit direct, then rerouted to speakers. No need to change PCM 3.1. You will have active channels/speakers tailored to your liking. I will do this upgrade and post shortly. Audison unit is about $750 shipped from Italy.
MasterJohn - I'd be really curious what crossover points and settings you chose and I'd be more than happy to share my results as these changes make a huge impact on the sound!
#314
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Thanks, Chad996. I will definitely share DSP settings once I get them all hooked up, Active! Did you use low level or high level input to your Audison? I would have to get to the Bose amp to find out to see if there is identifiable low level from PCM.
#315
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I just finished upgrading to all Burmester speakers in my 981 (I didn't add the dash sub as the 8" door woofers now put out a ton of clean bass)! To drive everything, I installed the Audison Prima 8.9, running all 8 channels active. It's 35W x 8 @ 4 ohms, but puts out 65W x 8 @ 2 ohms - which is what Burmester & Bose speakers are... so needless to say - it's plenty of power and sounds amazing! Note that I have the base radio (CDR31) which doesn't have an outboard amp, so I simply used the high level signal out of the oem head unit into the amp. It's is an amazing amp/dsp, with a ton of flexibility. There is def a learning curve as some of the crossover settings aren't intuitive unless you do your homework, otherwise you'll have phase issues, etc. I've been tweaking these setting for a week, which honestly is a lot of fun!
MasterJohn - I'd be really curious what crossover points and settings you chose and I'd be more than happy to share my results as these changes make a huge impact on the sound!
MasterJohn - I'd be really curious what crossover points and settings you chose and I'd be more than happy to share my results as these changes make a huge impact on the sound!