Building a portable boombox, need box advice

[iamdarkyoshi]

I have some (probably like 6in) speakers from an older rear projection TV, a high end mitsubishi one. These speakers are pretty good actually, better than the ones in the back of my car.

 

Now, I can do all of the electronics no problem, but designing the box... I dunno what to do. As any logical non-audiophile would say for a project like this...

 

"I want good bass, along with the other frequencies and I want the box as small as possible while still maintaining good sound"

 

I do have some titanium tweeters I plan to use as well if the regular speakers cannot do high frequencies well, but obviously these tweeters don't need a box

 

 

So how would I go upon using some speakers with unknown properties? I know I can just plop them into any old box and they would sound okay, but I want something that sounds good.

 

Is there some way I use my digital oscilloscope or something with a microphone to try to measure some of the properties of these speakers? I have a professional RTA, but the calibrated mic for it is missing because someone stole it, pisses me off. Right off.

 

So where should I go with this? @Enderman @SSL

[Enderman]

no, you need a special tool to measure the properties of a speaker, like this one:

http://www.daytonaudio.com/index.php/dats-dayton-audio-test-system.html

it aint cheap

[iamdarkyoshi]

1 minute ago, Enderman said:

no, you need a special tool to measure the properties of a speaker, like this one:

http://www.daytonaudio.com/index.php/dats-dayton-audio-test-system.html

it aint cheap

So whats my best bet without spending loads of cash? Build a box and test it? Where to start?

[Enderman]

2 minutes ago, iamdarkyoshi said:

So whats my best bet without spending loads of cash? Build a box and test it? Where to start?

I would use what you know about the speaker and find the average size box used for similar speakers

stuff like impedance, xmax, diameter, etc... which are easy to measure

 

for speakers that arent subwoofers you dont need to get the box measurements very accurate

and you can always add polyfill to the box to change the sound a little depending on what you think sounds best

[Scheer]

EDIT: Nvm, I've decided I don't know what I'm talking about

[iamdarkyoshi]

6 minutes ago, Scheer said:

EDIT: Nvm, I've decided I don't know what I'm talking about

I know that feel. I think. What are we talking about exactly?

[Hackentosher]

I'm going to sound like a mom, but maybe you should finish some of your other projects before starting new ones. 

[iamdarkyoshi]

5 hours ago, Hackentosher said:

I'm going to sound like a mom, but maybe you should finish some of your other projects before starting new ones. 

Yah probably

 

Though the passive project is waiting on ideas, the laptop is waiting on the sale of my imac, and the 3d printer is waiting on me getting my collective pop in a group to redo the controller's firmware

[creativecasemod420]

im building portable boom boxes,speakers and such myself. currently working on a scorpion build with bowers and wilkins sub,vu meters,tweeters and other components. my thing is audiophile sound,quality and uniqueness.

[creativecasemod420]

forgot to ad that I also make these bt and if they want wifi .

[iamdarkyoshi]

3 minutes ago, creativecasemod420 said:

im building portable boom boxes,speakers and such myself. currently working on a scorpion build with bowers and wilkins sub,vu meters,tweeters and other components. my thing is audiophile sound,quality and uniqueness.

Nice! What amp do you use to drive them? I use a Pam8610. They do not sound the best due to poor board design, but they are TINY and can kick out 10W per channel off of a 12V power source

[creativecasemod420]

amps come down to what size speaker I build, I use exotic wood, everything is hand made and put together. the scorpion speaer system I am building ..that is not the name that is what it looks like literally, having a sub in the main body,2 speakers in the claws, tweeters and small full range in the tail, claws and legs have brass rod in the middle to accent them, speaker spikes for feet on the legs, vu in the front with amp controls and I may liquid cool the amp and set the lines recessed. amps vary tho, ive run the amp u have and as is aid depending on size depends on amp I run but as of now im running 100 watt amp for his build from parts express. I love creating unique things, its fun and it sells.

[creativecasemod420]

as soon as I find my cam I will post some pics and work with you ,I may even have parts that somehow if I don't need em I can pass along, I am humble and grateful for what I have,not greedy at all and enjoying helping others if possible.

[iamdarkyoshi]

1 minute ago, creativecasemod420 said:

as soon as I find my cam I will post some pics and work with you ,I may even have parts that somehow if I don't need em I can pass along, I am humble and grateful for what I have,not greedy at all and enjoying helping others if possible.

Cool! I have been experimenting with passive radiators, but they are somewhat hard to find...

[creativecasemod420]

ebay is where I bought mine, used 2 for the sides of the scorpion, its also where I bought the 4.0 lossless Bluetooth modual

[Brennan Price]

Use an old briefcase if you can find one. If you don't have one I bet any charity shop will have a good dirt cheap one to use. That means it would be portable if need be however I would also say to make it battery powered (rechargeable) like my speaker system I built from scratch.

[Dukanater]

On 3/19/2016 at 0:06 PM, creativecasemod420 said:

amps come down to what size speaker I build, I use exotic wood, everything is hand made and put together. the scorpion speaer system I am building ..that is not the name that is what it looks like literally, having a sub in the main body,2 speakers in the claws, tweeters and small full range in the tail, claws and legs have brass rod in the middle to accent them, speaker spikes for feet on the legs, vu in the front with amp controls and I may liquid cool the amp and set the lines recessed. amps vary tho, ive run the amp u have and as is aid depending on size depends on amp I run but as of now im running 100 watt amp for his build from parts express. I love creating unique things, its fun and it sells.

you better post pictures because i just visualized this and now i need to see it!!!