I have a tda7052 and I found this project around the net: http://www.redcircuits.com/Page96.htm
I am interested in a overdrive pedal that can drive a cab if needed and I plan to build something around that project.
My idea is to put a volume control at the end of the circuit (everibody seems to put it at the beginning instead) will this work?
The earth of the output (stereo) jack seems isolated; using the pedal as a fuzz/overdrive and plugging it in an amp will always put the IC pin 8 to eart (of some other device yes... but) does it make sense?
Will be hazardous to put that pin to eart? Maybe using a cap?
I plan to put a couple of clipping diodes on the output like on the second pic. Again, will this work?
TDA7052 practice amp and overdrive project
-
ansil
- Cap Cooler
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i can look at this when i am better awake but since i am looking at it why on earth use a pushpull output stage when you want to make it a fuzz too. why not utilize something like the lm386 which is single ended and is better suited to this role.
-
allesz
- Cap Cooler
Well... I just appen to have one tda7052 around and I am in the mood to breadboard something.
I just wanted to know if somebody has some experience with that chip.
I tryed lm386 to build a smokey amp and something more flexible too; the results were not so good sonically (probaly it was my fault.... this time I have a socket to avoid wasting a chip).
I did not start to work on it yet, but I think about it, I think that a couple of cap should solve the push pull problems (value?).
Thank you for any contribution.
I just wanted to know if somebody has some experience with that chip.
I tryed lm386 to build a smokey amp and something more flexible too; the results were not so good sonically (probaly it was my fault.... this time I have a socket to avoid wasting a chip).
I did not start to work on it yet, but I think about it, I think that a couple of cap should solve the push pull problems (value?).
Thank you for any contribution.
-
allesz
- Cap Cooler
I breadboarded something today.
From an amp point of view the IC turns out super easy, it worked with just the IC and an input cap. The sound is clean but beautyfull.
I tryed to put the - pin to earth with no problem, but everything I placed on the output did non work good; diodes don't sound good (I tryed 1n4148 and 1n40004), you get distortion but a bad and strange one, not very musical (maybe different diodes....?).
Volume control works way better if placed on the input.
From the overdrive point of view I can't get any dirt from the circuit. So you can overdrive a tube amp slamming the input (and get overdrive) but not get a distorted signal from the unit.
In the redcircuit project page they say that the effect can work as a fuzz if powered at 3V; so I plan to try sonething like a beavis audio devolt to get some dirt. I will report the results.
From an amp point of view the IC turns out super easy, it worked with just the IC and an input cap. The sound is clean but beautyfull.
I tryed to put the - pin to earth with no problem, but everything I placed on the output did non work good; diodes don't sound good (I tryed 1n4148 and 1n40004), you get distortion but a bad and strange one, not very musical (maybe different diodes....?).
Volume control works way better if placed on the input.
From the overdrive point of view I can't get any dirt from the circuit. So you can overdrive a tube amp slamming the input (and get overdrive) but not get a distorted signal from the unit.
In the redcircuit project page they say that the effect can work as a fuzz if powered at 3V; so I plan to try sonething like a beavis audio devolt to get some dirt. I will report the results.