– One pin is connected to the ground (I don’t know if it’s 1 or 3, depending on naming convention, but it’s an extremity pin) I’ve checked the continuity with my multimeter on the volume button The sound stops on both speakers, the led continues to shine… I’ve completly removed the original wire from the speakers then tried to follow your schema to plug everything correclty (using 8 wires)…īut the sound stops when i turn the volume button above 9 I’ve found some 7 pins dins on the internet (ali express). Original issue : I had loose electrical connections in right speacker. Good luck guys…Happy modding.įirst of all a big thank you for this webpage… The only resource available on the internet for ATP3 ! I finished the project yesterday and I’m too busy to explain you briefly because I’m too busy enjoying my new ATP3 sound. To turn-on the speaker simply connect pin 7 and 6 and to control volume, bass and treble simply adjust the DC voltage enter to pin 1, 2 and 3 accordingly (using voltage divider principle). Mini-DIN pinout on ATP3 amplifier PCBīecause I can’t find the male of 7pin mini-DIN connector on local market, so I remove the connector and I soldered rainbow cable directly on the PCB. I found the functions of the pins as follow:įigure 1.

Googling this yields some information about the pins but it didn’t solve the problem because nobody posted about the pins functions. Since the connection from amplifier circuit to right satellite speaker use 7pin mini-DIN connector, I try to search about ATP3’s mini-DIN pinout. For tone control, ATP3 use IC LM1035 from National semiconductor which use DC controlled bass, treble and volume technology.īut I have problem because all speaker control is on ATP3’s right satellite speakers. ATP3 configured the IC to work both in single ended and bridge, 2 channel in single ended configuration for powering satellite speakers and 1 bridge configuration for powering the subwoofer.

This amplifier IC can be configured to work either in dual bridge or quad single ended amplifier. The heart of this amplifier is quad power amplifier TDA7337 integrated circuit (IC) from SGS-Thomson. Volume, bass, treble control and right speaker is connected to amplifier using 7pin mini-DIN connector. Left satellite speaker is connected to amplifier using RCA connector. Input signal is connected to amplifier using 3.5mm stereo connector. I opened up the ATP3 subwoofer and found that amplifier circuit is located inside subwoofer enclosure. In this project, I want to replace ATP3’s original satellite speakers with my Selenium surround speakers.

Speaker altec lansing atp3