You may have seen these on eBay, CS8416 + CS4398 24BIT/192KHZ Optical Fibre/Coaxial Decode Board DAC Decoder - if someone has one of these, please confirm the power connection as I don't want to blow it up
There is a 3 way connector, blue in photo.
It looks to me that pins 1 and 3 are 12 V AC with pin 2 being central (0v) tapping to a transformer. Pin 2 connects to screen of phono sockets.
There are 4 diodes that I've buzzed through to the connector that form a bridge rectifier from pins 1 and 3 hence I'm pretty sure my assumption is correct.
Thanks
There is a 3 way connector, blue in photo.
It looks to me that pins 1 and 3 are 12 V AC with pin 2 being central (0v) tapping to a transformer. Pin 2 connects to screen of phono sockets.
There are 4 diodes that I've buzzed through to the connector that form a bridge rectifier from pins 1 and 3 hence I'm pretty sure my assumption is correct.
Thanks
Attachments
The description states: Working Voltage: AC dual 12V-18V (Recommend dual 12V)
So I've connected 0-6 0-6 transformer and no smoke, listening to it now and sounds fine.
So I'm not sure if that description means two lots of 0-12v or 12 v peak, crappy translation I guess.
So I've connected 0-6 0-6 transformer and no smoke, listening to it now and sounds fine.
So I'm not sure if that description means two lots of 0-12v or 12 v peak, crappy translation I guess.
Depends on what regulators are used, simple. If the headroom is not enough it may be unreliable or seriously underperforming. A dual 12V transformer is 2 x 12V, not 2 x 6V.
No smoke as voltage is lower than needed. Smoke would occur when you would use a 2 x 24V transformer. My estimated guess is that the regulators for the opamps are now getting too low voltage to function properly. There will be sound but it is likely worse quality than it should be. The ears are unreliable instruments for DC, a DMM is more to be trusted so check type numbers of regs and measuring voltages.
So essentially: if you need sugar to bake a cake you would not use salt. If you need a 2 x 12V transformer then you don't use a 2 x 6V version.
No smoke as voltage is lower than needed. Smoke would occur when you would use a 2 x 24V transformer. My estimated guess is that the regulators for the opamps are now getting too low voltage to function properly. There will be sound but it is likely worse quality than it should be. The ears are unreliable instruments for DC, a DMM is more to be trusted so check type numbers of regs and measuring voltages.
So essentially: if you need sugar to bake a cake you would not use salt. If you need a 2 x 12V transformer then you don't use a 2 x 6V version.
Last edited: