LOGIC 7 (e65) subwoofers amp replacing by TPA3118

kaulas

New Member
Joined
May 23, 2021
Messages
1
Points
1
Location
Lithuania
BMW E65 / logic7/ Bass amps = has broke. I replace this two by a TPA3118 PBTL boars. In first i make a little mode of tpa inputs (on LOGIC7 output is 2 caps 0.47mkf) Pout Nout - on tpa input Pin and GND. I disconnect GND from chip (negative input pin), and reconnect directly to Logic7 Nout. For supply i have out StepUP converter for 400W (TPA board use ~3 A on 24V). In LOGIC board remove all caps. Replace one (10000mkf/25V in PCB) to give a supply for step up. Put 3caps on channel (upside-down) 10000MKF/35V on old place of original 6800mkf caps for 24V tpa 3118 supply. Tested. Right channel work little bit quitter... need to trace errors.
 

Attachments

  • maitinimo blokas stepup.pdf
    485.7 KB · Views: 7
  • IMG_1157.JPEG
    IMG_1157.JPEG
    791.7 KB · Views: 13
  • IMG_1291.JPEG
    IMG_1291.JPEG
    813.2 KB · Views: 14
  • IMG_1294.JPEG
    IMG_1294.JPEG
    765.7 KB · Views: 13
  • IMG_1305.JPEG
    IMG_1305.JPEG
    716.2 KB · Views: 13
  • K-AAAgCIMeA-1920.jpg
    K-AAAgCIMeA-1920.jpg
    174.4 KB · Views: 14
  • 0-02-05-9ba4a3680b96fcb0f6c7f8cd2c37a95fc2a6c8f2496f9e421b40f5d664d54ef6_1c470aaf.jpg
    0-02-05-9ba4a3680b96fcb0f6c7f8cd2c37a95fc2a6c8f2496f9e421b40f5d664d54ef6_1c470aaf.jpg
    202 KB · Views: 14
Hello and welcome to the forum!

We request new members to get to know our forum members via this introduction area.
This is because it takes time and some mutual interest for members to share their knowledge.

Going straight into trouble shooting a project might be expecting too much.
However, you would get better results by posting this in the DIY forum.

Thanks for joining the forum and I hope you get a solution for your problem.

Regards



.
 
Wharfedale Linton Heritage Speakers in Walnut finish at a Special Offer Price. BUY now before the price increase.
Back
Top