PUNCH - 1W amplifier

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[deadastronaut]

Bloody clouds... well it was fun...

just got my Tda2767a...whoohooo...3 watts of  pure unadulterated cat annoying......

[bluebunny]

Play nicely with the cat, Rob.

   

[deadastronaut]

arghhhhhhh.....

[deadastronaut]

LOL...SOLAR AMP..

1 watt solar punch amp ,

i tried a 3 watt amp and that kicked ass with a 12'' marshall speaker ha ha... (not on vid)

i now have some lovely small 12volt solar panels, which put out 14volt when raining, and 20 when bright sunshine...

so i'll be building a 3 watt, solar charged one soon..lol

[tca]

^ That looks pretty cool!

Cheers.

[bluebunny]

Nice one, Rob.  But one little thing puzzles me.  You said a long time ago that you're close to Mottingham station.  How close exactly?  Looking at that infeasibly blue sky and bright sunshine, I'd say about this close:

   

[deadastronaut]

Yeah the sun was added in after using adobe after effects....haha..

usually its moody as hell..not bad today mind...

im off to whitstable for a week, beach bumming etc,...better than the cote de zure full of illegals lol....
and  a lot cheaper too...

[bluebunny]

Enjoy yer break, mate.

[deadastronaut]

cheers man, will do...

[petey twofinger]

http://www.ebay.com/itm/Digital-Amplifier-Board-Module-35W-Mono-Power-amp-Low-Power-TDA8932-12v-24v-car-/181862348440?hash=item2a57d73698

DID TWO OF THESE IN buckets , like a 5 gallon then a three . cut in a ten inch subin the lid then a side mounted  tweeeter with a crossover in each bucket with a internal 12 volt 7mah sla battery and a port . its all upcycled stuff except the amp boards so it was cheap-ish . i paid 4 for one bass guitar amp  style speaker and 7 for the ooochie ooochie hip hop rap sub speaker .

these will be used for bass guitar and the other will be used with a drum machine , for on the back patio as the 100 watt chip amp system i built for mass guitar is stereo , has two heavier cabinets , a built in mixer and it is a bit much for the back patio so it made sense .

my punch amp is nice @ one watt , it uses a built in ni-cad 9 volt pack @ 9.6 volts , but one watt isnt enough to punch a bass speaker and drum machine at the same time , even at low levels , and i simply can not pass up a speaker value like that so sue me .

finding the tda2030 boards for 1.50 , maybe actuallya bit  less , i dont think i will be building any more punch amps , but i am sitting on four of those 7052a chips . i also am sitting on a few stereo tda / ebay / china modules i got for around 5 each , 15x2 's , i am doing one of those i n a half rack-sh enclosure  witha li-ion pack / charging circuit and i might just slap a fetzer or something in there but to be honest i doubt it as i have alot of options for small battery powered "front ends" here . i also have a 3 watt stereo unit , not sure if that can be bridged .

[tca]

Those 35W work like a charm!

[XwpisONOMA]

Hi, I know I am replying to your post more than 3 years later, but I just stumbled on it and I have a few questions, if you have of course the time and desire to answer them. Let me please know, I will post more once I receive your reply. Thank you very much!

[tca]

We are all here

[slashandburn]

I'm not. 

[deadastronaut]

revisiting the solar amp...as its been sunny recently..but not today
i fancy leaving it on my window ledge to charge during the day etc..(but i'll still have a dc socket to charge too)
i listen to radio a lot while i do stuff..so....


if i wanted to add a stereo summed to mono in for mp3/radio etc..

im guessing i just take the stereo in and add a small resistor on left/ right then in?..(what value?)

and would the straight guitar in be ok still?..

[boppy100]

All you need is are 1K resistors on the left and right out of the source, mp3, smart phone, etc. tied together for the mono input

[deadastronaut]

brilliant....cheers man.

breadboarding it up now..

[deadastronaut]

hmmmm...

that stereo/mono works,but when i add a guitar too
the guitar is almost silent..but stereo is ok hmmm...

should i put the stereo mono straight to the pin 2 instead i guess?..

edit: scatch that...

i put the L/R just before pin 2...sorted.   guitar and stereo fine now...

[deadastronaut]

does this look right for a solar/charge/DC  amp....seems logical..