My SqueezeBoomBox: Speaker Cabinet Thoughts?

[asteinmetz]

I've been using the SB hooked up to some powered PC speakers stuck in a Sierra Nevada beer case (it's important that you know it's a good beer). It goes everywhere and works great. Now I'm ready to turn it into a more proper box. I have my chopped up wooden wine case (Casillero del Diablo. That's important too) and my T-amp. I'm thinking about Fostex full range speakers but I wonder about the best size.

The box face is about 7x20. Do I get 3" speakers and leave room for a bass port below them or fill up as much of the available area with speaker cone as possible, 4.5" in this case? I know diddly about cabinet design. One issue with the smaller speakers is efficiency. I see in the forums that 90+ db is preferred for this amp.

Fostex Size Watts dB
FE83E 3" 10 88
FE103E 4" 15 89
FE126E 4.5" 45 93

Thanks for your thoughts.

[zanash]

the speakers your looking at are normally built into horns ...these need a long tube 8-10' to be able to generate the low notes.

As you say your very limited to the power output of the T-amp [single ?] you only have about 3 watts before it clips....

I can't think of a design thats going to help you ...but you may find the information here useful

http://www.visaton.com/en/chassis_zubehoer/archiv/index.html

this is the archive section you can download all the kit designs from here ...there must be something that will help you !

[Matt B]

Have you looked at www.diyaudio.com?

Lots of stuff there on diy boomboxes.

[pemrich]

The Fostex 126 has nice efficiency and can get down to 60 Hz in a small box. I drove speakers of slightly lower efficiency with the T amp to quite respectable sound levels.

Fostex has a design guide at http://www.fostexinternational.com/docs/speaker_comp/pdf/recom_enclose/fe126e_encl.pdf