Four Beauties in a row!
Congrats all.
Congrats all.
It would be much appreciated to show these circuits.
Sasidharan
Compress your speaker protection section and spread your out put transistor so it doesn’t cluster out at one end of the heatsink. place the transistors at each spline, this will look adn do better for heat spread.
new Naked amp project ????
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Hi Electromagix, Great diy building indeed, especially the "naked" version - never thought of doing that.
I'm a bit puzzled by the pcb design and perhaps you might enlighten me - the output transistors 1943/5200 are on one end of the pcb but the output terminals seems to provided via the delay relay (?) at the opposite end of the board, yes? Is there a purpose for this separation and longer tracking?
I'm a bit puzzled by the pcb design and perhaps you might enlighten me - the output transistors 1943/5200 are on one end of the pcb but the output terminals seems to provided via the delay relay (?) at the opposite end of the board, yes? Is there a purpose for this separation and longer tracking?
White board ? The pcb is breakable, some guys like to keep the relay section in the back panel, some on the side sink along with Amp. Spade terminal provided to interlink
Ah right, sorry - missed that
A Gareth Roberts (?) also made some rather heavy copper boards and allowed provision for the larger wattage resistors, etc - no kubota but I got a pair of boards from our mate from HK (Jim's) so have the option - I often use a high gain Cap multiplier as rail filters and allows flexibility in the power supply - the Salas L-Adapter is also a rather good supply for this too. Large, high quality power caps are getting harder to find &/or crazy prices.
A Gareth Roberts (?) also made some rather heavy copper boards and allowed provision for the larger wattage resistors, etc - no kubota but I got a pair of boards from our mate from HK (Jim's) so have the option - I often use a high gain Cap multiplier as rail filters and allows flexibility in the power supply - the Salas L-Adapter is also a rather good supply for this too. Large, high quality power caps are getting harder to find &/or crazy prices.
Hi, am back at my old loved Hiraga Class A after 101 days!!
So far there is who things I dont need in my hifi life, Nelson Pass B1 with Nutube and Hiraga with Kubota. Been there tryed that ( :
So I got 4 new transistors (1943 / 5200), change the 180 / 240 Ohm resistors ( Dale RN65 ) and the 300 Ohm resistor ( Amtrans AMRG ).
So now it plays again, lifted the pcb 5cm + so transistors no 1/3 up from bottom.
Frank
So far there is who things I dont need in my hifi life, Nelson Pass B1 with Nutube and Hiraga with Kubota. Been there tryed that ( :
So I got 4 new transistors (1943 / 5200), change the 180 / 240 Ohm resistors ( Dale RN65 ) and the 300 Ohm resistor ( Amtrans AMRG ).
So now it plays again, lifted the pcb 5cm + so transistors no 1/3 up from bottom.
Frank
Attachments
Not sure those split heatsinks are a great idea... a copper/alu plate underneath for heat distribution would help