Loud Bluetooth Speakers With Bass

Hello everyone,

In the next few minutes you can see the production of this boom box.

The speaker box is made with plywood

You can find dimensions in the description

The interior of the box must be at least 50x40x20 cm

I used a pocket hole jig to join the plywood

I also used wood polyurethane glue

The plywood must be glued very good to avoid vibrations and cracks

The amplifier will be powered by a 12v battery pack that has a 3S BMS attached

Charging are often made thru the BMS with external 12.6v (max) power source but it'll be not balanced

The BMS stop charging when one among the cells reaches 4,2 bolts.

That means that one or more of the cells may not be fully charged

The other method, much better, is to charge with a balance li-ion charger, I use IMAX B6

I also made a schematic that you can find in the video

I used wood filler to cover the cracks

I let it to dry and sanded

Apply white matte finish paint

The white paint is the base coat for the transfer potch/medium

The image we want to transfer must be printed on a laser printer.

The transfer potch needs about 24 hours to dry

Use water to remove the paper, the image will remain transferred to the wood

Use spray varnish to protect the image

Before you start installing the wires make a schematic on paper

Also you can make a simulation to make sure all components fits the box

This model of amplifier needs 24v source

That is why I used a 250w DC-DC booster

The amplifier, battery pack and booster may get hot

you must leave space around them to cool

I used a 12v fan for the amp

The amplifier has 2 channels for mid and hi tones

and one channel for bass

I wired the mid-range speakers and tweeters in parallel

When installing the wires try to insulate them as good as you can

Always check polarity to avoid shorts

Li-ion cells are dangerous

Short or wrong polarity may result in fire or explosion

The BMS (battery management system must be activated.

You can do that by applying a 12v tension on the 12v output terminals of the BMS.

Thank You for your visit

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Ferry Bring Peoples From Side To Side On Mekong River Of Cambodia