SlewMaster Builds

[thimios]

Your wolverine board should arrive any day now.

This arrived in Greece but not in house yet!

 

[thimios]

I thought you made a few

I have made many but not completed in a chassis.

 

[thimios]

Green IPS ver.1.2

The derty test is here.
I have use the power prototype that i used for all the Slewmaster IPS.
Have a look.
No servo placed for 0v offset adjustment.
Zero A.C with input sorted!

 

[vargasmongo3435]

1.2mV offset thimios wow! on the first image? Please make a video sound but with free copy right music

oh yes of course you still need to set up all take your time let me know how is the sound later

 

[thimios]

1.2mV offset thimios wow! on the first image? Please make a video sound but with free copy right music

oh yes of course you still need to set up all take your time let me know how is the sound later

Hi Juan,thanks for gerbers!
Yes offset set easy at 1.2 mV.
I will do all the test.
PS.If you will find the time make all TO92 transistors smd,just redrow the pcb!

 

[vargasmongo3435]

that is awesome, I'm glad you got the gerbers sure man , SMD yes I can, it will take time but yes if I do the layout I'll post here, at the moment I'm having fun with a vintage clone layout the ETI466 1980 power amplifier, good day thimios



regards
Juan

 

[thimios]

1.2mV offset thimios wow! on the first image? Please make a video sound but with free copy right music

oh yes of course you still need to set up all take your time let me know how is the sound later

It is specially for you Juan.
Playing in mono, i haven't the other channel yet.
Because that i haven't a speaker protection system i have add a 10.000uf in series with speaker. Speaker is a full range Fane 12-250TC parallel to a salvaged woofer.
Green Input stage - YouTube

 

[thimios]

Second channel is on the road.

 

[vargasmongo3435]

hi thimios wow awesome man how is the sound mids high and low frequencies?
also, really important thimios thank for doing this test I don't have proper tools to do the test

 

[thimios]

Second channel tested.

 

[vargasmongo3435]

nice thimios hey what did you use for Q5 and Q6?

 

[thimios]

nice thimios hey what did you use for Q5 and Q6?

I ended up from c1845, a992.
I use BC560, BC550.As soon as voltage is 12v it is't any problem. Different pin position!!!
That's why i ask for smd pcb.

 

[thimios]

Ready for the final test and play in stereo mode.

 

[Harry3]

Nice and good luck on the final test.

 

[vargasmongo3435]

thimios when you get a chance, post SMD transistors part numbers good luck on the test

 

[thimios]

thimios when you get a chance, post SMD transistors part numbers good luck on the test

 

[vargasmongo3435]

got it

 

[gaborbela]

Ready for the final test and play in stereo mode.

May I ask what type of power transistors U use in the power section (OPS). Thank you!

 

[thimios]

May I ask what type of power transistors U use in the power section (OPS). Thank you!

Sure, i will look because i don't remember.

 

[thimios]

NJW0281G,NJW0302G