I think some output offset adjustment is necessary as now what is sent to output bias mech has changed. Perhaps a servo of some sort integrated into the idea may make it possible, dunno that much about them.
aah crap. hmmm. next isue. how much offset are we talking about?
i do want some easy adjustment on P3 without opening the amps.
so it can be adjusted after ones mood and music choice🙂
maybe a mix of fixed resistor and pot. say a 50ohm pot and 2 75ohm resistors.
then you have a little adjustment without that much change in offset.
i do want some easy adjustment on P3 without opening the amps.
so it can be adjusted after ones mood and music choice🙂
maybe a mix of fixed resistor and pot. say a 50ohm pot and 2 75ohm resistors.
then you have a little adjustment without that much change in offset.
Hi AudioSan,
Set it up and try it ,If you want a ohm meter any DVM you could sacrifice the display and all of them have a calibration adjustment inside,I guess price would dictate how many digits you wanted,
You could use a vertical trim pot and a plastic adjust tool to get it to the front panel ,one of those with the hex hole would be perfect,
Good Luck to ya!
NS
Set it up and try it ,If you want a ohm meter any DVM you could sacrifice the display and all of them have a calibration adjustment inside,I guess price would dictate how many digits you wanted,
You could use a vertical trim pot and a plastic adjust tool to get it to the front panel ,one of those with the hex hole would be perfect,
Good Luck to ya!
NS
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hi NS. i want a back light display that looks nice🙂 so a DMM is no no🙂
i think i have to try some. hmmm. actualy. i can just try it on the F5 i have.
so that all s ready when the turbo monoblocks are build.
i also want to change one thing on the turbo. R5 and R6 says 1K. here i will go for 2.2K as the standar F5. so i dont run out of pot adjustment🙂
parts will be ordered from mouser next week🙂
i think i have to try some. hmmm. actualy. i can just try it on the F5 i have.
so that all s ready when the turbo monoblocks are build.
i also want to change one thing on the turbo. R5 and R6 says 1K. here i will go for 2.2K as the standar F5. so i dont run out of pot adjustment🙂
parts will be ordered from mouser next week🙂
It is great, playing very fine. Great combo with frugal horn mk3 and alpair7.3
Thanks for your help with the build.
Thanks for your help with the build.
Ill check, although i think any change that would cause a difference in sound would cause offset. What is acceptable, you tell me. WIth BA3 FE, you can get away with it because of cap.
that sounds great🙂 well. +/-50mV is acceptable.
so i guess there is some adjustments allowed🙂
if one find the sweet spot on P3 and adjust offset to 0mV, there will be a little bit to go on i hope🙂
or one can start with 100ohm on each side of the wiper of P3, adjust it to 0mV and see how much offset one gets when P3 is adjusted all the way to each side.
i know. but a 200ohm pot set in the middle is 100ohm from wiper to each end pin🙂 thats what i ment🙂
if this works. then maybe one will do with a single turn pot(50ohm)
and don't need display and ohm meter🙂
and ofcourse. one can have a switch inside the amp, to switch between multiple resistor settings. and adjust offset from there. f.ex if you switch speakers or something else🙂
and use the pot to adjust after type of music🙂
and don't need display and ohm meter🙂
and ofcourse. one can have a switch inside the amp, to switch between multiple resistor settings. and adjust offset from there. f.ex if you switch speakers or something else🙂
and use the pot to adjust after type of music🙂
If it were me, i would define 3 settings and use a selector switch. I am sending out the GB kits Mondat, so hopefully this thread will light up soon.
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I am going to show the monblock setup i have been talking about tomorrow. It is not ideal due to the unflat back of the 10.08 HS i got from HS USA. They are currently retooling to with a focus on a nice smooth and flat back for instances just like this. It is the reason they have been out of production for a while. Mine will work, but it puts the heatsink back on an uneven plane and will show up when the lid and bottom are added. It should still show a method that would allow the use of TeaBags boards, ChipAmp PSU, and possibly trado in single monoblock. I know this will open things up for some folks in building the larger versions.