Portable Bluetooth Boombox powered by Drill Batteries 

Thats some cheapness.. Wow.

yuppers

I've spent 3 hours watching your videos tonight btw, you're cool as hell man

Can't say I've run into that problem, my batteries all still work fine. As far as I know the Makita batteries have a built-in controller that keeps just that from happening, you can't really de-charge them too far in my experience. They last very long in this thing anyway, I've had this run at full blast for 3-4 hours on one 5A battery and it still had 2 bars left

@@PhilVandelay Thank you for taking the time to answer me. I only have the newer star/yellow makita batteries, this is part of why i'm so worried. Makita batteries cost is absurd here in Brazil. I had a problem before with a makita vacuum that overdischarged the battery and than the charger refused to charge it, thankfully it was still on warranty. Sinde that happened i started to worry about using makita batteries in "dumb" devices, by that i mean devices that doesn't have internal overdischerge control. Thank you!

What is the essay supposed to be on? Maybe we can help. Do an essay on how we have become such a disposable society, when so much of what gets thrown out, can be reused and made into something really cool, like a portable boom box from some speakers and a case that one may have lying around! Just saying.

I simply looked for the two spots where the two contact pieces that connect to the battery are soldered onto the board. Then I soldered my two wires on to the topside of those. You don't really need all the stuff on that board, I only bought the adapter as a shortcut so I have something that fits the battery. You can use it for USB charging too of course but in this case it's just so you don't have to build an entire adapter that the weirdly shaped batteries fit in

you should use a car battery or motorcycle with an ac/dc adapter

If the amp runs on DC, and the output of all batteries is DC..why the need for ac/dc adapter?? Do you mean charger for the car battery?

I'm not sure about Milwaukee, but with Makita the charging electronics are built in to the battery, not the tool, so it should work no matter what you connect it to. So far I haven't had any problems with this setup and I use the same adapter to charge my camera too, all my batteries still work fine, even though I've "emptied" them a few times - they charge just fine. I'm pretty sure it's the same for other tool brands, I think it's a common misconception that those chips sit in the tools themselves. It makes much more sense to put them into the battery.

@@PhilVandelay while I agree it is smarter to put charge protection into the battery instead of the tool, I simply don't have the kind of money to add Makita to my cordless tool arsenal. I was wondering what you would have done, had the charging protection been in the tool itself; as it is in my case. I've been thinking about getting a 5s BMS and using it only for over discharge protection, as I can easily pull m18 batteries off the dock to charge quickly on my milwaukee charger. I dont want to "charge the battery with the speaker" as it will defeat the main purpose of my build. My goal is to build a speaker that, when the battery dies I pull another m18 pack out of my jeep; swap them out constantly keeping one charged and never miss a beat with the tunes.

@@PhilVandelay but I am having a difficult time finding a low voltage cutoff circuit that I can adjust for my batteries, hence settling on using a BMS.

I bought it on ebay, just search for "Makita USB adapter" or whatever tool brand you have, you can also find them for other brands like DeWalt etc.

Lexvox LP the back was sealed

koupe88 my mistake didnt really see that😂🤦‍♂️

If you drilled the back out of the dummy speaker you could probably use it as a radiator.

D twist Rewind true

lol i didnt see that either

I'm not taking the power from the USB outlets, it comes directly from the battery which is the reason for opening it and soldering on those cables. The adapter is just there to provide the connection because it's much easier than to build something that fits on that battery. So it's outputting 18V to the mini amp

Yeah it's really good for the price. Except for that awful melody when you switch it on

Phil Vandelay that melody is fine compared to mine. "Bluetooth mode!" And when you plug a jack "input mode!"

Yeah I get the same ones. I just cut them out of the video ;)

I actually added the foam later on like you said, and you're right it made a huge difference to the sound! I was going to add a grill soon but it kind of got lost on my to-do list... As for the reflex, I just used the same tube that was in the original speakers, I don't know much about speakers so I kind of just guessed everything. It's probably not the greatest sounding speaker out there but it suits my needs so far. Already tempted to make another one though...

Because I'm cheap and I mostly used stuff I had around the shop at that time

Eo fresco é kkkk

Did you ever figure out this song??

Thanks 😀

Can you please link me to your builds that do things "properly"? 🙄

I bought it on ebay but you can also get them on Amazon. There's a link in the description. I got the cheap knock off version but Makita also makes an official one.

Thanks, I never notice it.

очень все плохо в европе... не едь сюда...

Depends on what you consider enough

Do you consider it enough?

For a portable sound system? Yes definitely. It's kind of hard to demonstrate on video unless you have a really good mic. I also upgraded this later by putting sealing tape all around the closing edges which helped a lot with the bass.

Nice. 👍🏻👍🏻

Not *that* obvious, as the back of it is completely enclosed - no way for air to pass and to pick up resonating frequencies.

Yeah there's a great vibe to brazilian music :)

Thanks! I suspected that it probably wasn't just there for looks

yeah passive radiator tend to be used in thinner boxes where theres not enough room for a port but alot of places seem to use them now because they look like an extra speaker. something like www.parts-express.com/dayton-audio-sd215-pr-8-passive-radiator--295-492 or a port in that box could help with the low end if you feel it lacks it. if the box doesnt seal well when its closed a passive radiator wont work very well though.

I have actually made a small modification to this since the video, I've added sealing foam tape (made for doors and windows) around the edges of the inside box and it has had a huge imapct on sound quality now that it's somewhat air sealed. I got plenty of bass now and am even more satisfied with the result! I also get no considerable vibration even at high volume anymore (the box being quite heavy helps with this). Thank you for your insights, speaker building seems to be a rabbit hole and I'm already tempted to build some more :)

im with you. my dad has some old but very high end towers in his home audio setup they were like 3000 a pair new and he blew a midrange and i found him replacements but i had to buy 2 to get them so i got the extra and now i want to build something with it but i havent decided what route i want to go yet

Atergia maybe try making a small mono FM radio, I've made one and it sounds really good! I used a 3,5" driver from Dayton audio

It's not a passive radiator

Faraaz Yousaf you should delete your comment. he obviously knows what a passive radiator is. But this thing in the video wasn't. It was sealed...

how was that a passive radiator, the back of it was sealed. how is the air pressure supposed to move it if the back is sealed?

Luca Mongiardo it is not, it is sealed from behind, so air can't get to the cone.

Nerd Central nope. it was sealed