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Messages - johnk

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1
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: September 05, 2021, 10:28:39 PM »
hmm. mine looks real. i got it from smallbear a couple of years ago. it still didn't work though.

2
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: August 28, 2021, 02:35:05 AM »
mine never worked either and i tried another TDA1022P chip but to no avail.

3
thanks for the offer. i'll probably do that since it's just sitting here collecting dust.

4
maybe, but i bought it from Smallbear and they're always reliable.

5
nope. still no chorus effect.

6
Bummer! i hope you can get it sorted.

7
that would be great.

so far i've just measured voltages. i plan to put it on a scope & a signal generator tomorrow.

8
does anyone that successfully built the TDA1022P version have some voltage readings that they'd be willing to share?

9
if you could be so kind to post your voltages (on the chips for a start) maybe i can get mine working properly.
with a 9 volt benchtop power supply, i am getting +13.4 volts on pin 8 of the TL072's and LM 1458 and -13.4 volts on pin 4. i'm also getting -13.4 volts on pin 9 of the TDA1022P.

10
yeah, i'm sure that it is okay. i'm just trying to figure out why mine's not chorusing/vibrato-ing.

11
i just built my TDA1022P version yesterday. the bypass & volume control works as well as the LED's rate flashing with the rate pot, but i have absolutely NO chorus effect. I've checked and re-checked everything but to no avail. i had really high hopes for this one.


12
General Questions / Re: Best gated fuzz synth bass PCB a la Brown Dog?
« on: March 16, 2017, 01:57:01 AM »
Any bass players on here tried the Lovetone Big Cheese? That does a nice gated guitar, don't know about bass. Plus it has other modes, too.

yes, i've built one but i added a bass ("fat") boost to mine and it sounds great for bass that way.





here's a quick & dirty clip noodling and trying different settings:

https://soundcloud.com/johnk_10/bigcheesebass




13
General Questions / Re: Best gated fuzz synth bass PCB a la Brown Dog?
« on: March 06, 2017, 12:58:00 PM »
thanks guys!

14
General Questions / Re: Hipster Won't Bias
« on: March 06, 2017, 12:57:06 PM »
i had a bad ground on the fuzz pot. DOH!

15
General Questions / Re: Best gated fuzz synth bass PCB a la Brown Dog?
« on: March 05, 2017, 02:59:49 PM »
i've made few Chunk Systems pedals:





pcb layout:



i also built their Agent 00Funk:




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