question for sir apex
sir apex could i us 4558 opamp ic instead of ne5532... and could i totally omit the limiter section of the input and use it as a active crossver?? thank and god bless😀
sir apex could i us 4558 opamp ic instead of ne5532... and could i totally omit the limiter section of the input and use it as a active crossver?? thank and god bless😀
hello apex sir
can u share the diagram of checking the amp without speaker at full volume.
because i built two amps nmos200 and b500 . within two or three days both will finish.
pls help.
can u share the diagram of checking the amp without speaker at full volume.
because i built two amps nmos200 and b500 . within two or three days both will finish.
pls help.
Hy! It was an old amplifier's case, but the front panel didn't fit with the cooling fan and the heatsinks, so i made a new one. The rest of it was a Reflex 500 amp's case.
Hello Apex !
I have read most of this thread today and saw some changes made. And I was wondering if you could make a complete pdf with all the new components, PSU, Bridge board, PCB's... I think that would help many other so they don't need to search the 137 pages for the latest version.
So I want to make this amp could you recommend the best Input voltage ?
Thank You Very Much.
I have read most of this thread today and saw some changes made. And I was wondering if you could make a complete pdf with all the new components, PSU, Bridge board, PCB's... I think that would help many other so they don't need to search the 137 pages for the latest version.
So I want to make this amp could you recommend the best Input voltage ?
Thank You Very Much.
I'm sure, that you either can find a case in the garbage (if you know where to look) or find a friend, who has a metal bender, so you can make your own case. It's really not that difficult, just plan before you make anything, and the result will be satisfying.
Hi, Apex sir. I have a question for you:
Can you explain me why you put electrolytic capacitors on input of amplifiers instead of block,tantal capacitors? In many projects on web I see block capacitors 1uF(or similar), so what's the difference? 😱
Can you explain me why you put electrolytic capacitors on input of amplifiers instead of block,tantal capacitors? In many projects on web I see block capacitors 1uF(or similar), so what's the difference? 😱
Sir Apex,
Can I use B500 with a DC supply rail of 100V-0-100V..? and what changes should be made...please help me...
Can I use B500 with a DC supply rail of 100V-0-100V..? and what changes should be made...please help me...
Hello,
I have assembled most of the parts for B-500. Transistors yet to be soldered.
I will be using Regulated Psu giving 75-0-75 dc, and 4-10,000 mfd capacitors, Do i need to make any changes.
Currently i am having 37-0-37 5 amps transformer, Can i use this to test the amp.
The heat sink is 15" long height 105mm and fins length 44mm, I suppose this should be enough.
Will kse350 work in place of mje350.
I am assembling a amp for first time without any help, So tell me how to set bias for the transistors. And what initial steps to take for testing the amp.
I am not getting relay for protect, can i get any photo of the sample or link where to buy it in India, is it fine if i connect the speakers without protect.
hoping for the big miracle.
Thank You🙂🙂
I have assembled most of the parts for B-500. Transistors yet to be soldered.
I will be using Regulated Psu giving 75-0-75 dc, and 4-10,000 mfd capacitors, Do i need to make any changes.
Currently i am having 37-0-37 5 amps transformer, Can i use this to test the amp.
The heat sink is 15" long height 105mm and fins length 44mm, I suppose this should be enough.
Will kse350 work in place of mje350.
I am assembling a amp for first time without any help, So tell me how to set bias for the transistors. And what initial steps to take for testing the amp.
I am not getting relay for protect, can i get any photo of the sample or link where to buy it in India, is it fine if i connect the speakers without protect.
hoping for the big miracle.
Thank You🙂🙂
Attachments
Sir Apex,
can you please send me the schematic of triple darlington topology and its corresponding PCB..?
thanking in advance and with best regards...also to the group..
can you please send me the schematic of triple darlington topology and its corresponding PCB..?
thanking in advance and with best regards...also to the group..
They are 0.33r 5watts , is anything wrong.
if i need 250watts rms at 4 ohms what changes should i do.
Ok Thank you.
Please give guidance for first startup and bias adjustment.
I am not having good electronic experience, so some guidance is welcome.
Hi, also i am not able to get relay for protect, I searched for it at lamington rd, but was told to bring sample, which i don't have, Where did you get relays.