BMW E39 5 SERIES REAR DECK SUBWOOFER TOP HIFI SPEAKER
1997-2003 BMW 5-Series E39 Trunk DSP Speaker Woofer Box Nokia HAES fits M5 model | eBay
✓✓1995-2003 BMW E39 Sedan M5 540i 530i 528! OEM Subwoofer Box Nokia Look!! | eBay
G.A.S. Passive Crossover and Sub Box for e39 with DSP | BMW M5 Forum and M6 Forums
BMW E39 dsp soundsystem overhaul (custom pcb-s, 3d scanning) | DIYMobileAudio.com Car Stereo Forum
Sharing audio upgrade on my non-DSP in '99 528iT. Kept OEM headunit/cassette (for looks mostly). Replaced stock speakers with Bavsounds & replaced OEM CD changer with GROM bluetooth which punches above its