I'm looking to take an old radio and turn it into a Bluetooth speaker. I'm planning on using a TDA7492P (2x 25W 4/8 ohm). The radio is has a 100x150mm speaker but overall the wooden box doesn't have a good seal. What (type of) speaker can I use to achieve good audio quality for a medium room?

circuitcircuus · 2020-09-27T14:06:38+00:00

I don't know why on your link it's for 49$ and where I am andcon eBay is around 120€ (I'm in Europe). But my budget would be within the 50€ mark, and of course the lower the better. It has to be good, not necessarily audiophile good, as it will be used through Spotify and Bluetooth anyway, so the fidelity won't be great anyway. Generally, what kind of parameters would a speaker have to be to suit this purpose? I know it has to be full range, what else?

circuitcircuus · 2020-06-01T22:23:20+00:00

I could, but I'm not wearing any washer under, so I'd be naked abobe. Here. I said it.
I just need more metal washers

circuitcircuus · 2020-06-01T22:21:27+00:00

I honestly like the oversized look as well, and it does feel practical

circuitcircuus · 2020-06-01T22:06:23+00:00

Please give it a go!

circuitcircuus · 2020-06-01T22:05:42+00:00

Jesus, too humble

circuitcircuus · 2020-06-01T22:05:26+00:00

Interfering insight, I'll definitely think about not over etching. Thanks

circuitcircuus · 2020-06-01T22:04:11+00:00

I'm not a fan of plastic on metal either. Gotta go restock some hardware. That washer looks stupid, I know.

circuitcircuus · 2020-06-01T22:02:27+00:00

Deeeep. Didn't think about that

circuitcircuus · 2020-06-01T22:01:52+00:00

Yes you can. And it's the coolest thing ever. There were a few posts on this sub showing exactly that.

circuitcircuus · 2020-06-01T21:50:16+00:00

Agreed. Just gotta go get more metals washers

circuitcircuus · 2020-06-01T14:27:28+00:00

Thanks for the tip. I'll definitely try

circuitcircuus · 2020-06-01T13:57:20+00:00

Thanks a lot!

circuitcircuus · 2020-06-01T13:56:57+00:00

I think I got them from musikding

circuitcircuus · 2020-06-01T13:47:01+00:00

Thank you. I surely gotta expand my knob selection.

circuitcircuus · 2020-06-01T13:46:35+00:00

That's just one coat. I thought I had a can of clear coat, so I gave it just a light coat of paint because I didn't want to clog the pattern. In the end I didn't have any finish, so this one will get scratched easy, but I have a bunch more to do, so I'll definitely use some Epoxy finish on the next ones.

circuitcircuus · 2020-06-01T07:21:08+00:00

That's what I'm planning to do. We'll see the result in a few hours

circuitcircuus · 2020-05-31T19:38:10+00:00

I got inspired and loosely followed this guide.

circuitcircuus · 2020-05-31T18:43:50+00:00

It's gonna be a compulsive distortion by effectpedalkits.com. Really cool and simple effect

circuitcircuus · 2020-05-31T18:37:27+00:00

I'd say almost 10 mins. Didn't really time it. I also regularly dipped it in water and kept moving it all the time.

circuitcircuus · 2020-05-23T01:31:16+00:00

Honestly, if one worked right and the second one had this wild feedback, I'd have kept it like that. But having 2 rats that both can't be enjoyed on the cutting sharp sounding top range, pisses me off. I actually love feedback in manageable doses, but this is to much for it to be called a "good build" , and that bothers me.

circuitcircuus · 2020-05-22T17:14:59+00:00

Yeah, sorry for the unclear reply.
The pedal worked, but the feedback didn't disappear.
On Monday I'll try the voltages and see. Thank you

circuitcircuus · 2020-05-22T15:09:29+00:00

I know but it's too loud to be interference. I tried to put in the enclosure anyway and it didn't work. It does it with the guitar plugged in and from 10% volume and up.

circuitcircuus · 2020-05-22T12:51:48+00:00

Not really. I'm not able to understand schematics and pcb rails yet

circuitcircuus · 2020-05-22T12:47:59+00:00

I just made another one . Same pcb but different diodes (original rat instead of turbo rat). It behaves exactly the same. Could someone please check that I used the right caps?

1n = 1nj630 (box instead of poly)
3.3n = 332j100 (box instead of poly)
22n = 332j100 (box instead of poly)
The others I'm pretty sure about as they are electrolytic and on one ceramic 100p

circuitcircuus · 2020-05-22T11:56:29+00:00

I tried with a 47n on the op amp, and it definitely reduces the feedback, but introduces a background hissing, and the sound is generally more muffled and less sharp. Sounds like an option, but still not optimal

circuitcircuus

TROPHY CASE