Reddit reviews INSMA Amplifier Board TDA7492P Audio Receiver Amplifiers DIY Module 25W Dual Channel

I'm going to actually leave the batteries in the pack and solder on a plug for charging. I'll use the battery pack to power a Bluetooth amp board.

I have one of these on the way: https://www.amazon.com/TDA7492P-Amplifier-Wireless-Bluetooth-Receiver/dp/B01BTJZFY6/

Hopefully it will work out well.

INSMA Amplifier Board TDA7492P Audio Receiver Amplifiers DIY Module 25W Dual Channel https://www.amazon.com/dp/B01BTJZFY6/ref=cm_sw_r_cp_apa_mwOPBbA4SSH1W

So basically you want to use the electronics from the existing speaker with different speakers and a different cabinet?

Why destroy the original speakers when you can use something like this.

I'm not endorsing that board, btw, it was literally the first match in a search for "bluetooth amplifier board" on amazon.com.

Not OP but you could hook the speakers up to a Bluetooth Amplifier or something similar and then make a wood case for it.

I got it off Amazon. It's a dual channel 50W + 50W driver that can drive 4ohm -8ohm speakers. I used BOSS 4" 50W 4ohm speakers

TDA7492P 2 x 50 Watt Dual Channel Amplifier Wireless Digital Bluetooth 4.0 Audio Receiver Amplifier Board 50W + 50W https://www.amazon.com/dp/B01BTJZFY6/ref=cm_sw_r_cp_api_HtjByb5TNPS0P

BOSS AUDIO BRS40 BRS 4" 50-watt Full Range Speaker https://www.amazon.com/dp/B001RNNX8K/ref=cm_sw_r_cp_api_mvjByb6J5BQZV

I wired together an old pair of passive speakers on top of our kitchen cabinets. Got power from an old 9v adapter to a $13 TDA7492P bluetooth amp. The echo dot is about 10 feet away on a wall.

They're always on/connected. No problems so far.

My bad, I meant to post this one (the ones I actually bought)

If the one has anything close to 200w, most of that would have to be the subwoofer channel. I'm deeply skeptical.

The Lepai is not an amazing amp. According to one reviewer, his bench tested at a realistic 7w per channel, nowhere near the 20 advertised. But it gets the job done, it's compact, reasonably well built, and it's a proven design that lots of people use. My Lepai drives my commercially-made 2-way 8-ohm bookshelf speakers quite well, JBLs and Polks. It does NOT like my Carmody Classix IIs, which are lower sensitivity than the big-brand ones. They pop and break up if you try and push it, which does not happen when I run them off my 85w/channel Yamaha receiver.

Remember that if the battery life is an issue, and for a suitcase boombox I assume it will be, the Elegiant is most likely going to pull more current than the Lepai in order to power the subwoofer channel. I'd keep it simple here and go with the Lepai.

If you're willing to buy something that's basically a bare board without a case, there are more options.

This one claims 50 watts/channel and has integrated bluetooth, but no minijack input.

This one doesn't have bluetooth but it's extremely cheap and claims 35w/channel.

Im using this 😊
INSMA TDA7492P Chip 25W+25W Wireless Bluetooth 4.0 Audio Receiver Digital Amplifier Board https://www.amazon.com/dp/B01BTJZFY6/ref=cm_sw_r_cp_apa_igCLzbX7RN3CA

if you just want to stream audio to it from another device.

amazon link


or from china link

i've setup things with the 2nd item, works fine. no soldering on either, unless you want to replace the crap switches... or move them off the board.

Do you have any suggestions?

Right now I'm using this to connect with Bluetooth : https://www.amazon.com/dp/B01BTJZFY6/ref=cm_sw_r_em_apa_i_82k4BbCDEH8CP


I looked up AV-Receivers and they're several hundred dollars (from what i saw) and I'm kinda hoping i don't need to spend that much to just connect through RCA cables instead of Bluetooth

Hi, I am looking for help replacing the amplifier of my busted M-Audio AV40 Studiophile monitor speakers. The amp is dead and I have little knowledge of electronics. My question is regarding the following type of amplifiers:

https://www.amazon.com/TDA7492P-Amplifier-Wireless-Bluetooth-Receiver/dp/B01BTJZFY6/ref=sr_1_1?s=electronics&ie=UTF8&qid=1487097907&sr=1-1&keywords=TDA+7492

Can I simply replace the old board with one such as that one? or do I need another component to separate the signal to each of the drivers in each speaker? Its a 2 speaker system, with woofer and tweeter each, no stand alone woofer. I think the woofer frequency is 80hz to 2.7khz, not sure about the tweeter driver. Here are the specs of the monitors:

http://www.m-audio.com/products/view/studiophile-av-40 (features/support tab)

And what kind of quality difference should I expect by replacing the old board with this one? Those are some damn good monitors but they are kind of old, I suppose it wont be that difficult to approach the quality for a budget.
The main question remains tho... Do I need a crossover, filter, divider for one, none, or both speakers? I only know those are components, not sure if I need them. Thanks, guys.

I'd really like to find something that can stand on its own without a sub, since none of my groomsmen will have a sub. Other than the Sprites, it looks like the rest of those were designed to be paired w/ a sub.

I saw the Sprites original design was a boombox, which I thought was pretty cool. I think that would be the most practical form that my groomsmen would use. Then I got to thinking, if it's going to be a boombox it needs to have bluetoof and I need to fit an amp and battery. Here's what I came up w/:

speakers $42.70
http://www.parts-express.com/dayton-audio-nd90-8-3-1-2-aluminum-cone-full-range-driver-8-ohm--290-210

port tubes $5.14
http://www.parts-express.com/parts-express-speaker-cabinet-port-tube-1-3-8-id-adjustable--260-388

filter parts $17.19
http://www.parts-express.com/jantzen-audio-090mh-20-awg-air-core-inductor-crossover-coil--255-046
http://www.parts-express.com/dayton-audio-dnr-20-20-ohm-10w-precision-audio-grade-resistor--004-20

amp $16.99
https://www.amazon.com/INSMA-TDA7492P-Amplifier-Wireless-Bluetooth/dp/B01BTJZFY6/ref=sr_1_1?s=aht&ie=UTF8&qid=1467991447&sr=1-1&keywords=bluetooth+speaker+amp+board

battery $15
https://www.amazon.com/ExpertPower-EXP1250-Alarm-Battery-Terminals/dp/B0010Z4MDK/ref=sr_1_7?ie=UTF8&qid=1468001600&sr=8-7&keywords=12v+sla+battery

battery charger $20
https://www.amazon.com/gp/product/B00LICD2TU/ref=ox_sc_act_title_3?ie=UTF8&psc=1&smid=ATW4RRWB3JMSM

• handle $3
  https://www.amazon.com/gp/product/B00JJ18WLK/ref=crt_ewc_img_huc_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
  
  
• optional $11 voltmeter + USB charger ports
  https://www.amazon.com/gp/product/B00LUL054Y/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A11A70Q280RHPK
  
  
• plus another ~$12 in other misc build materials
  
  After adding all that I ended up at about $130 per which is too high. How can I get that down?
  
  What if I used 1 driver per boombox instead of 2...do you think that would still sound decent or is it not going to get loud enough by itself?