DIY BOOMBOX - Need Help!

[vokus]

Hi Everyone! My first post, and here to draw on your knowledge and experience.

I build this boombox for my little sister because she likes to listen to dubstep.
Its made of random old parts laying around the house. I don't even know the power ratings of the speakers or the amp. It surprised me by how GOOD it sounds!







So I here to ask questions and build a better version that really kicks and reproduces sound more accurately!

Can you guys give me some pointers?

What should I be looking at when its comes to car audio components.
Who makes good quality subs, speakers, amps?
How can I get a boombox that represents good lows, mids, and highs?

[picowallspeaker]

Hi
My bad ! I lost my previous message ,
so I skip all the first part about power supply , thin cables and separated chambers for the speakers .
I was writing about the difference between home and car speakers , when I hit
a strange button ......
So , car speakers are 4Ω impedance : the amplifier is less happy to work on
such load ,as it distorts twice ; but theoretically it should deliver double
power , but it happens only when the output stages are projected and dimensioned for it , as also the power supply .
I suggest to go the classic way , with separated speakers on proper stands ,
a good turntable and ....

[jerome69]

Hi,

The concept is very good and nice.
Use better amps, better speaker drivers, and better power supply.
The price will rise too. You can use a 2.1 amp with integrated active crossover.
I like a lot Rockford Fosgate, Alpine and Focal in audiomobile.

what is your budget ? the size ?

[vokus]

Thank you!

I have questions about boxing the regular car audio door speakers? ( Not Sub's )

Should I make the door speakers a sealed box, like the sub, or should I leave them open to the air?

Are thier any powerfull 2.1 amps 12volts amps? I keep finding weak stuff on ebay, but cant seem to find any 2.1 that has alot of power...

[Kjeldsen]

Read this first.

The Boominator - another stab at the ultimate party machine

Powerfull 2.1 amps on 12 volt is only seen carstereo, since they step up the voltage inside. one cheap example
NANO-404

The traditional 12 volt amps on ebay with tripath chips will never be more that 10-12 watts or so in 8 ohm.

[dangus]

10 watts RMS may not sound like a lot, but it's 10 to 100 times as much power as many portable stereos. And the same real power as a "high power" car head unit (read the specs carefully). And those can deliver bass you can feel (at least inside a car).

[Saturnus]

Originally Posted by Kjeldsen

Read this first.

The Boominator - another stab at the ultimate party machine

^^ This

If you're at all serious about making a quality boombox. Build that.

[Kjeldsen]

I have 10 watts at home, and don't need more. But if you have a small apartment and 15 happy friends partying, then 10 watt is simply not enough.

[Saturnus]

Originally Posted by Kjeldsen

I have 10 watts at home, and don't need more. But if you have a small apartment and 15 happy friends partying, then 10 watt is simply not enough.

Depends more on your speaker's sensitivity than how many watts your amp can belt out.

[Kjeldsen]

Originally Posted by Saturnus

Depends more on your speaker's sensitivity than how many watts your amp can belt out.

Yes, but a boombox like the one pictured here will not have any deep bass if sensitivity is very good (95 dB or above). When I was student and single I had big fairly efficient speakers around 90 dB, and 10 watt was absolutely not enough.