Retro Amp 50W Single Supply

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#321
Hopefully this will entice some disco lovin' guys to build this version with modern transistors and relive those 70's and 80's as I come to know about this amp from reading online..
how is the logo?

regards
Prasi
P.S. reduced the size a bit.
 

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  • Autona Vintage Job-REV3_reduced.png
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#325
As promised🙂
 

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#328
prasi said:
Apex Retro Amp
1. Prasi 2 nos
2. Member (nareshn) thro PM 2 nos.
3. Bix 2 nos.
4. avtech23 2 nos.

16 PCBs remain.
Click to expand...

got the pcbs made to spec.70um Cu. ready to ship out.
Pl let me know your paypal via PM along with full postal address. Will send an invoice. For Indian member, it will be bank transfer.

Next step, Mouser BoM for Bix.

regards
Prasi
 

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#329
prasi said:
got the pcbs made to spec.70um Cu. ready to ship out.
Pl let me know your paypal via PM along with full postal address. Will send an invoice. For Indian member, it will be bank transfer.

Next step, Mouser BoM for Bix.

regards
Prasi
Click to expand...

Hi Bix,
Mouser BoM attached. Please add all components and share your cart here, so someone could suggest corrections, if any.
R8' trimmer is for bias adjust to 43mA (~20mV across R18). It might be better to replace the R8 after bias adjust with a fixed resistor R8.
regards
Prasi
 

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#330
Fantastic Prasi, thank you very much. I’ll look over the bom this weekend, I’m super busy at work at the moment. Really looking forward to building this and a few others this winter. I’ve got plenty of projects lined up so I’m gonna be a busy boy. 🙂
 
#338
prasi said:
I think it was tested by mouna and he decided to keep the apex original schema.
Click to expand...

yes indeed. i found original apex design better sounding to me.my only modification was to exclude the two diodes and resistor and add a vbe multiplier with bd139 mounted on same place with output device.
I dont have the amp any more but i will build it again..my only concern is to use 2N3773 or 2SC5200..i dont know which ones would sound better..
 
#340
Hey Prasi, thanks for the BOM. Now, dumb question, do I manually go through each part and then purchase through mouser or can I import the entire list? Sorry for the silly question but I can’t see import option at mouser. What am I doing wrong? Duh

Edit: I found it. I new I would feel stupid posting this just as I hit the submit button🙂
 
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