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I know its an old thread but how did this project now.   did you update it?   Im very interested

Tried the 2.2uf from pin 6 (+) to 4 (-)   What that did was apparantly made some sort of a highpass filter and chopped of the highs. This was with the 386n 

When i tried the n4 it farted "Less"  but never the less still farts.   like braaaattttt braaaatttt like when you try the low strings.

I think the amp is perfect as it is and i really like the stock tone.   So this is me officially giving up on the N4.

Initially was running it on a perf/vero board.    Then i found out that i skipped the 2.2meg between input and the first 47n cap.

I etched out a pcb and got it working . . . . however . . . .

1.) was not anticipating it to be errrr  this fuzzy hahahaha ( 1n4148 diodes)

2.) It seems to act like a noise suppressor would dive down on the signal killing the sustain. 

Since the adding of the 2.2meg made the circuit work would bumping up to say 4 meg cure the sustain problem?

Ordered some 5088's amd 89's should show up today.    But the 3904's did work.   

Ill check which n4 i got.    https://ph.rs-online.com/web/p/audio-amplifier-ics/5342911/   It says texas instruments

I really wanted to build a green ringer only problem is 5088's arent availbe to me locally.
so i though to sub 3904's   

Ended up failing miserably i double, tripled and quadruple checked by circuit.  Everything is in place. however i did notice several schematics in the net with some variances from one another like at +9v on one there was no cap to ground but on another there is a 100uf and also to the final cap on some it calls for a .1uf cap and on some 100uf was listed.

the sound that im getting is a barely there kindly farting output.   I feel it wants to work but it just cant.

Anyways im convinced that the transistor has to be the culprit maybe the 3904's cant push enough juice to make the circuit work

Any inputs would be greatly appreciated. Im open to all suggestions and comments

Hey Chromeshpere thanks for that reply  i didnt even knew you were in the forums here.

Its just frustrating cause i ordered a bunch of these and I had to wait about a month to get em only not to be able to use them.   

BTW i also tried the twin 386 bridged with the circuit.   I couldnt get that to work either.  Anyways its still an excellent amp and i use it everyday.     

Ive built a Zen drive into the amp.    thats why there alot more hook up wiring in there .  It actually gives it a clean boost for more volume and dirt if i so please.

havent solved the n4 problem though.    i same chromesphere in youtube built a distortion circuit and initially it had the same farting problem i had.   he solved it with a 2.2uf cap very close to the + and - on the chip.  I think i might try this.

It had significantly higher output but was unusable as is.     I hope i can solve this to continiue using the n4

Ive built a lil green Watter 1 watt 12 au7 hybrid off NZCdogs design :

http://www.madbeanpedals.com/forum/index.php?topic=6869.0

And have been enjoying it for quite sometime now.  However i was using the lm386-N1 OPamp for the power section.   

Recently lm386-N4 came available and since its what the guys in the thread were using so i ordered it.   it was an easy swap since i used a socket.

However it was quite disappointing as it gave a harsh/farty/distorted tone.   and as the sustain died out it also cleared up.   I dunno maybe i need to swap out a cap to make it work with the N4 but i followed the build notes and i tried the suggested values but no avail.







MAybe you guys can help me determine what could be/where i went wrong.   I thought i could just swap out the IC's but it wont work

Sir corey,

Just wanted to ask do you think this would work with a MJ2955 transistor amplifier right after the output.    with 2 mj2955's power can be raised to 30watts.   But i know mj's work as playback amplifiers.   what cha think.    I really love mine use it alot.    But jamming throught a home stereo the amp just can keep up with the output.