Author Topic: PUNCH - 1W amplifier  (Read 118546 times)

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allesz

Re: PUNCH - 1W amplifier
« Reply #20 on: September 26, 2012, 08:10:03 AM »
Hallo, just a few words to confirm what tca say about the tda7052.

Some times ago I posted an even simpler project on fsb, the nano amp http://www.filedropper.com/nanoamp

It was super simple but way better and cleaner sounding than the classic lm386 projects (it should be a little more powerful, so you also get some more headroom). My amp was (before a wrong polarity incident  ;D) my go to friend for testing circuits on the breadboard late at night, because it did not colour too much the sound.
Of course it sounded way better and brighter with a buffered pedal before, so the idea to add a buffer seems very good.

Right now I use a transistor amp with a small output transformer; it sounds good but it is almost unusable wile breadboarding because it distorts too much.

I still have a couple of tda7052 and (if I did not fry them too) I want to give a go to this project.


tca

Re: PUNCH - 1W amplifier
« Reply #21 on: September 30, 2012, 05:52:53 PM »
Just made a PCB for the PUNCH. Enjoy.

Cheers.

EDIT: BTW, tested.
« Last Edit: September 30, 2012, 05:58:33 PM by tca »
"The future is here, it's just not evenly distributed yet." -- William Gibson

tca

Re: PUNCH - 1W amplifier
« Reply #22 on: October 10, 2012, 06:26:22 AM »
Here is the webpage for the PUNCH.

Cheers.
"The future is here, it's just not evenly distributed yet." -- William Gibson

garcho

Re: PUNCH - 1W amplifier
« Reply #23 on: October 10, 2012, 01:17:27 PM »
bravo, thanks
"...and weird on top!"

tca

Re: PUNCH - 1W amplifier
« Reply #24 on: October 20, 2012, 10:23:38 AM »
Just made a cabinet for the PUNCH with a 3'' speaker and using a IKEA wooden box. The rear photo shows the 9V battery enclosure.



Cheers.
« Last Edit: October 20, 2012, 10:25:46 AM by tca »
"The future is here, it's just not evenly distributed yet." -- William Gibson

deadastronaut

Re: PUNCH - 1W amplifier
« Reply #25 on: October 20, 2012, 01:10:09 PM »
looks great...nice touch with the battery box.. :icon_cool:
http://www.youtube.com/user/100roberthenry
http://deadastronaut.wix.com/index
https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

tca

Re: PUNCH - 1W amplifier
« Reply #26 on: October 29, 2012, 05:31:31 AM »
Just made a VERO version using the diy-layout-creator. Great software.



Cheers.
"The future is here, it's just not evenly distributed yet." -- William Gibson

deadastronaut

Re: PUNCH - 1W amplifier
« Reply #27 on: January 18, 2013, 03:21:53 AM »
hi tiago:

i breadboarded the ruby yesterday, and found its not for me...

i'll order up a couple of these TDA7052'S and try yours on breadboard too....9v-12v.

i looked in ikea for the same sturdy box you used, no joy....hmmmm...i'm sure i'll find something else suitable......eventually ::).

 i'll try it out on breadboard and if it sounds ok, i'll build/get a speaker box and then match the EQ to suit it... 8)

 thanks for sharing man... 8)
http://www.youtube.com/user/100roberthenry
http://deadastronaut.wix.com/index
https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

tca

Re: PUNCH - 1W amplifier
« Reply #28 on: January 18, 2013, 03:46:07 AM »
Hi Rob, looking forward to hear about your build.

Cheers.
"The future is here, it's just not evenly distributed yet." -- William Gibson

bluebunny

Re: PUNCH - 1W amplifier
« Reply #29 on: January 18, 2013, 10:18:54 AM »
i looked in ikea for the same sturdy box you used, no joy....hmmmm...i'm sure i'll find something else suitable......eventually ::).

I agreed to get dragged along to IKEA on the unspoken premise that I would pick up one (or two) of these handy "mini guitar cabs".  B*ggers had discontinued it.    >:(
Ohm's Law - much like Coles Law, but with less cabbage...

deadastronaut

Re: PUNCH - 1W amplifier
« Reply #30 on: January 18, 2013, 11:42:21 AM »
ha ha yeah i got dragged too.... :)
http://www.youtube.com/user/100roberthenry
http://deadastronaut.wix.com/index
https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

caspercody

Re: PUNCH - 1W amplifier
« Reply #31 on: January 19, 2013, 01:06:46 AM »
Stopped at Radio Shack today, and they have the 3 watt kit (K8066RS) for $9.99 (over 50% off). Not a bad price.

rutabaga bob

Re: PUNCH - 1W amplifier
« Reply #32 on: February 10, 2013, 05:40:07 PM »
Does this have to be direct-soldered, or can an 8-pin IC socket be used?  I've seen some chips that say DO NOT use a socket.
"...as sharp as a sackful of wet mice" - Foghorn Leghorn

tca

Re: PUNCH - 1W amplifier
« Reply #33 on: February 10, 2013, 05:42:08 PM »
Does this have to be direct-soldered, or can an 8-pin IC socket be used?  I've seen some chips that say DO NOT use a socket.
I've used a socket, but you can solder it if you want to.
"The future is here, it's just not evenly distributed yet." -- William Gibson

chptunes

Re: PUNCH - 1W amplifier
« Reply #34 on: February 11, 2013, 11:29:24 AM »
I used a socket with the TDA7052A chip.. great clean amp for the bedroom/family room.


rutabaga bob

Re: PUNCH - 1W amplifier
« Reply #35 on: February 11, 2013, 12:17:20 PM »
Thanks to you both!  This is on my list of projects...thinking of putting a valvecaster on the front end.  Larry
"...as sharp as a sackful of wet mice" - Foghorn Leghorn

tca

Re: PUNCH - 1W amplifier
« Reply #36 on: February 11, 2013, 12:23:16 PM »
I used a socket with the TDA7052A chip.. great clean amp for the bedroom/family room.
The TDA7052 has more gain, requires a more tolerant wife/family.

Cheers.
« Last Edit: February 11, 2013, 12:51:05 PM by tca »
"The future is here, it's just not evenly distributed yet." -- William Gibson

rutabaga bob

Re: PUNCH - 1W amplifier
« Reply #37 on: February 11, 2013, 12:31:26 PM »
Forgot to ask: the 7052 is the only chip available in my area.  For a volume control, should I just wire in a pre-gain pot?
"...as sharp as a sackful of wet mice" - Foghorn Leghorn

tca

Re: PUNCH - 1W amplifier
« Reply #38 on: February 11, 2013, 12:45:54 PM »
Forgot to ask: the 7052 is the only chip available in my area.  For a volume control, should I just wire in a pre-gain pot?
A 10k pot between the buffer and the chip, one lug to buffer, the other to ground and wiper to chip, that should work.
« Last Edit: February 11, 2013, 12:57:29 PM by tca »
"The future is here, it's just not evenly distributed yet." -- William Gibson

petey twofinger

Re: PUNCH - 1W amplifier
« Reply #39 on: February 12, 2013, 12:40:03 PM »
i see there is a tda7052 a than has a volume lug on the chip as well .

DC volume control
Few external components
Mute mode
Thermal protection
Short-circuit proof
No switch-on and off clicks
Good overall stability
Low power consumption
Frightens house pets
Low HF radiation
ESD protected on all pins

you run the pot from ground to pin 4 . i wonder what the benifit of this design is . oh well , i ordered 5 so i guess i will never know unless i bought the normal ones and a/b'ed em .

my goal is to do a simple fuzz circuit and house them both in the amp chassis . tried this with an lm386 and it howls like mad .
Frightens house pets
im learning , we'll thats what i keep telling myself