Handover2100

Today I did this replacement, I bought a second hand ML amplifier with model 86280-0W360 which was used in IS300. I only replaced the amplifier and keep speakers unchanged, and find some music better but some worse, i don't know why, maybe I need to add more speakers or something else. I got the ML amplifier pins definition as below: P28-1: WF1+ P28-2: WF2+ (SR+) P28-3: MR+ (CTR+) P28-4: WFL+ P28-5: WF1- P28-6: WF2- (SR-) P28-7: ML- (SL-) P28-8: ML+ (SL+) P28-9: MR- (CTR-) P28-10: WFL- P29-1: WFR+ P29-2: FL+ P29-3: RL+ P29-4: RR+ P29-5: WFR- P29-6: FL- P29-7: FR- P29-8: FR+ P29-9: RL- P29-10: RR- The Pin definitions are same between ML and Pioneer, but sequence is different, I re-arranged the sequence of original lines to make it suitable for ML amplifier, and made the test, as what I said , some kind of music is better but some worse. Now I still have a problem, if you check the pin definition, you can find ML provides 2 kinds of output, for example P28-2: WF2+ (SR+), for the same pin, in different condition, it will output WF2+ OR SR+, someone told me this is dependent on whether your car has front-middle speaker, if is, ML will output SR+, if not ML will output WF2+, but how does ML amplifier know this information? It makes me confused.

For my understanding, ML is skilled at sound field, 5.1 or 7.1 channel is suitable for this system, symphonic music is better. If you prefer music kind of HEAVY-METAL, maybe you will be disappointed. All ML amplifiers have Coaxial input, but it is dependent on your CD/DVD player, only DVD player can provide coaxial output to this amplifier, and it is really optical signal, if not, it will be replaced with analog signal, the quality of music will be decreased.

As I know, IS250 with ML system is equipped with 14 speakers, non-ML IS250 only 8 speakers, firstly you need replace original Pioneer power amplifier to be ML, and then replace all the speakers, but indeed it is difficult to find all these materials.