Hi zdr.
My board is 2.2z.
I would like to add an op amp buffer just before the two output relays .
As there is no schematics available, can you tell me if there is a best trace to cut?
I don't really understand how mute and calibration relays are used when calibrating, perhaps it's a bad idea and will disturb calibration procedure?
Thanks in advance.
Best regards
My board is 2.2z.
I would like to add an op amp buffer just before the two output relays .
As there is no schematics available, can you tell me if there is a best trace to cut?
I don't really understand how mute and calibration relays are used when calibrating, perhaps it's a bad idea and will disturb calibration procedure?
Thanks in advance.
Best regards
RMI-FC100 is class A until 8W so there is some heat dissipated, but it can be biased for less dissipation. Better to ask for details in the FC100 thread.
I thought it was only class A until 2w? viz :
Class A power: 2W rms into 8ohm with Iq=0.6A (maximum Iq for optimal B class bias)
zdr,
Is there any easy way to test for ldr failure since I can't get past error 20 to measure them. I am getting approximately 5V across the three relays, which should be enough for operation. I am using the NSL-32R3 in this build; which I believe you have said in past posts were slow on calibration but should work.
Regards,
Roy
Is there any easy way to test for ldr failure since I can't get past error 20 to measure them. I am getting approximately 5V across the three relays, which should be enough for operation. I am using the NSL-32R3 in this build; which I believe you have said in past posts were slow on calibration but should work.
Regards,
Roy
I thought it was only class A until 2w? viz :
Class A power: 2W rms into 8ohm with Iq=0.6A (maximum Iq for optimal B class bias)
Indeed, i confused watts with ohms
R6 relay
Hi,
I have a tube preamp that needs to preheat the tubes before applying full B+ voltage, I want to use the "+ R6" header on the board to connect a SPST low current 12v relay.
Is this model of relay (G2RL-1A-E-ASI DC12) can make the job ?
How I connect the coil ? +12V at one side and R6 at the other side ?
Thanks for ansewering and best regards
Hi,
I have a tube preamp that needs to preheat the tubes before applying full B+ voltage, I want to use the "+ R6" header on the board to connect a SPST low current 12v relay.
Is this model of relay (G2RL-1A-E-ASI DC12) can make the job ?
How I connect the coil ? +12V at one side and R6 at the other side ?
Thanks for ansewering and best regards
Hi,
I have a tube preamp that needs to preheat the tubes before applying full B+ voltage, I want to use the "+ R6" header on the board to connect a SPST low current 12v relay.
Is this model of relay (G2RL-1A-E-ASI DC12) can make the job ?
How I connect the coil ? +12V at one side and R6 at the other side ?
Thanks for ansewering and best regards
sounds like it should work!
It’s still under test. It requires a hard modified version of Arduino Nano with Atmega328PB to utilise all available 16bit timers. There is no more high/low range switching causing volume bumps, so the dac hardware is also modified. Power supply is fully on 5v, no 12v any more.
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