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Topics - mladenu

#1
Amplifier Discussion / Insert spring reverb...
February 18, 2016, 05:04:24 PM
Hello good people. Me again with my pathfinder voxy! :) After all rumble with my ear and brain wracking, i found that factory set up of mentioned "monster" is all i need.. But what about reverb, and spring one of course??? :) Not to mention that i draw pcb layout of Phat Verb, but... Stand alone unit which is greater than amp? Forget, unfortunately... Idea is to insert spring reverb section of session rockette 30, but with preserving that sound... Many things make me confucing:
First.. This one ic spring reverb (tl072), is the best sounding reverb i`ve heard... I have read Rod Elliot article, and because of that i amazed how Stewart Ward achieve that.. Strong way driving 190ohm impedance tank with single (ok, dual) op amp ..

Because of that my plan is to add that reverb drive and recovery to my pathfinder... Is it possible and where would be insert point... After tone stack or master volume or.. ? And which modification i must plan? Suspect on gain values...

Thanks in advance!

Schematic and sound:
#2
Amplifier Discussion / Add FX loop to Pathfinder
December 19, 2015, 07:04:20 PM
Well, i plan to add reverb pedal to this little Vox, and maybe would know where to predict FX return, but will leave this enigma to some of ssguitar expert which would be kind to explain me that...

And here is schematic:
#3
Hello my friends,

I will post Schematic of this little Vox amp... I plan to use PhabbTone pedal in front of Pathfinder, and want to add swith to bypass completely and only tone stack.. This because i prefer pre, not post eq distortion, and because lack of mid control.. And of course because i find Phabbtone to be all i need for tone shaping.. :)

Question is where to add bypass switch?

Thanks for your answer...

Mladen
#4
HEllo guys, me again.. :)

Like a subject says, please give me advice with schematics for guitar power amp with lm3886 (because i have one), and a power supply which power up this chip to throw ~20-25watt output.. For practice amp needs surely.. :)

Again Thanks in advance.

Mladen
#5
This schematic is from Sessionette Rockette 30 amp, and you will recognize standard Hitachi power amp design.... With wholehearted help from J M Fahey, i add current-feedback to PA which is drawn on picture.. But, i want to add Presence to control CF...

Help me to do that...
Thanks in advance!

#6
I apologize if I repeat, but ran into this schematic. My question is whether this is possible and enforceable in practice ...

Even if it might serve as a guitar power amp ... :)

JMFahey last year helped me (if he remembers that :) ) to add current-feedback to classically designed Hitachi mosfet power amp with current resistor, but this with lm317 regulators is new to me...

http://www.current-drive.info/projects/45

#7
Hello friends,

I want to modify tone stack from preamp, and need output impedance value from marked point to simulate new one (tone stack) through LTSpice.. How to do that?

Thanks in advance!
#8
The Newcomer's Forum / Current Feedback question!
October 27, 2014, 01:33:41 AM
Hello guys,

I own Japanese Fender Sidekick Reverb 30 amp, and I have dilemma does this amp have current feedback in topology?

I marked where my doubts lie...

Thanks in advance for your answer(s). :)

Cheers!