Right - if no nested option is used, then you have only 27K resistor and 1P5...2P2 ceramic cap in parallel.
This is wonderful.🙂
Glad to hear that my job is a help for other guys.
This will help me to stay on game also.😉
If i see well,two options.
1)unmound two 120k change R15 to 27K// 2.2pf
2)mound two 1p2 //120k
Right?
Try them both and see what you think. I'm interested to hear other's opinion on the nested feedback. Some testing numbers would be good for each option too!
It looks like it didn't take you long to master SMT work. Nice job! Those dual transistors can be a bit of a pain.
Ok i will mount two 1p2 to this channel and leave the other channel empty according to second option for a try.
For d.c input blocker capacitor i have these, what is preferable to your opinion?
Unfortunately the 10uf don't feet well.
I want to go step by step so this IPS will be tested alone without OUT mounted.
Never i have done this in the past,but now using SMD this is necessary.😉
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Thanks,you,Valery,Evan ,give to me the opportunity to go for this.🙂
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Any one of those should work. The bass might roll off a little early with 2.2uF though.
I made up a jumper to plug into the bottom of my board with 100R resistors from PD+ and ND- to NFB for testing. It works well.
Right. Just don't forget - in the 1-st case R15 = 27K, in the 2-nd case R15 = 47K.
Good tryk! I will do the same .
Yes Valery i don't forget this(i hope so)
I'll put a note right on the schematics saying this. It will likely save some grief later.
ZERO DISTORTION OUT
Some progress to power amplifier.
An easy to build power stage,clear, beautiful,i wish to play nice too!
This Monster will be alive soon😱
Some progress to power amplifier.
An easy to build power stage,clear, beautiful,i wish to play nice too!
This Monster will be alive soon😱
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Thanks Valery!
I hope this can play soon.🙂
Looking around for the adjustment procedure (R31,R43).
My plan is to use one or two pairs of out transistors for this first test.😉
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Looking around for the adjustment procedure (R31,R43).
Where i can find this adjustment procedure?
Where i can find this adjustment procedure?
If you go to Index at the 1-st page and click "NS-OPS", you end up here:
Building instructions
Just note - clockwise / counter-clockwise directions are mentioned there, based on the trimmers orientation at my 1-st prototype version.
Anyway, set the bias spreader to the maximum R position, the clamping spreader trimmer - close to the middle R.
First - you set the bias with no signal. Then - set the clamping with signal.