Bottlehead Forum
Bottlehead Kits => Eros Phono => Topic started by: johnsonad on September 24, 2016, 12:36:21 PM
-
Team BH,
Given the Eros is a shunt regulated design, is there any benefit swapping the 100uF 450v lytic in the PS for a 100uF 500v film cap?
Thanks,
Aaron
-
Aaron,
I would think that any benefit using film cap would be greatly diminished with the additional regulation of the Eros. Not to say you would not hear it.
That's just my 2 cents.
-
It will give you warm fuzzies inside, but a large benefit of the hybrid regulator is relative immunity from power supply nasties.
-PB
-
It will give you warm fuzzies inside, but a large benefit of the hybrid regulator is relative immunity from power supply nasties.
-PB
I am suspecting this is also true on switching out the 270W 5W wirewound resistor resistor for a choke?
-
Yes, the C4S load that feeds the whole circuit appears as roughly 10M-15M of impedance to 60Hz ripple. An equivalent choke would be 30,000-40,000 Henrys.
-
PB I see what you're saying but is there any advantage to lowering the ripple by using a choke in place of the 270 Ohm resistor in the PS before the shunt reg? I'm assuming it's one of those try it, and listen to it mods.
-
PB I see what you're saying but is there any advantage to lowering the ripple by using a choke in place of the 270 Ohm resistor in the PS before the shunt reg? I'm assuming it's one of those try it, and listen to it mods.
You can try it and measure the ripple on the regulated B+ before and after.
-
I'm pretty sure my scope is not sensitive enough for that but I'll try it at some point. Thanks.