Many Thanks

Hello, I already ask to Cecil with PM but he doesn't read my msg therefore I submit my question in this topics. I would partially replace actual OP AMP used in my ZX 450 V2 with better ones, what OP AMP I have to replace if the Crossover is configured in bypass mode, only OP AMP installed on Mainboa...

Hello, I have to connect two different amp (one for left and right channels and one for sub) at the same two Source line out. Firts amp is a PG MS275 and second ones is Alpine AMP, how can I do it ?

with master and slave connection ?

Thanks in advance

Hi Cecil, Unfurtunatly for me no O-scope no party, I will try to maximize benefit from all other mods (caps and so on). At my first turn on my new (this amp isn't in a great condition) ZX450 I have my firt negative impressione, it's true that I connected it only to test funtionality (before cap repl...

Hi Cecil, therefore after the OPAMP replacement I have to measure OPAMP power voltage to understand what additional action have to do? can you help me with detailed action because I'm not an electronic engeener? I have soldering/desoldering station and a good multimeter but I don't have other equipe...

I understand that I have to replace BA4560 with OPA2134 and NE5532 with OPA2604 but I have do change or modify other component as to support new kind of OPAMP ?

thanks

Hello, I need some suggestions about cap and if needed OPAMP replacement in my new (just buyed) ZX450 V2. I find this replacement cap: 4 X 2200uF 16V with Nichicon HE 5600uF 16V UHE1C562MHD but I did'n find a good replacement for 4 X 2200 50V in a nichicon HE series, who can suggest me a good choice...

Hi Cecil, I replaced all power cap, now I'm ready to rep all three opamp with

OP274
OPA2164
OPA2604

what op APM do you suggest me (I have got all of them) ?

Thanks

Hello,

I think that those amp are very similar but if I can choose one on them what amp I have to prefer, what are the differences ?

Thanks in advance

Thanks, I replaced: all power supply cap + three 2,200uF 16V by three 5,600 16V + two 4,700uF 35V by two 10,000uF 35V I think to replace also all other cap with Elna Silmic II, all OP-AMP (from NE5532) with OP275 or OPA2134 or OPA2604 (to find better sound) . At the end I hope that sound will be bet...

Hello, what do you think about ZX475 or Ti500.4 used with channel 1-2 for RF (midwoofer and tweeter) and channel 3-4 bridged for Subwoofer ? is it a good configuration and good amps for this or not ? my FF front is managed by MS275 and I need only one additional amp for RF and subwoofer, what's amp ...

Hello,

Who can help me to identify what component have to be replaced on my MS275 Rev E amp, I would replace also OAMP NE5532 with better component (example AD825), which are the best choice ?

thanks