Arrh...RadioShack Doesn't Provide T/S Specs

[coolkhoa]

Has anyone measured T/S parameters for RadioShack #40-1033 6-1/2" polypropylene woofer? I just need Qts and Vas for sealed box use.

Thanks in advance.

 

[Cal Weldon]

Maybe if you post a pic, someone will recognize who makes it and you may be able to find out via that route.

Cal

 

[coolkhoa]

I hope these pictures are clear enough.

Foam surround:

 

[coolkhoa]

Top view; flat dustcap.

 

[coolkhoa]

Side view; unshielded.

 

[coolkhoa]

Rear view.

 

[Cal Weldon]

Can't really see but,

That looks suspicially like something sold under the Pyramid name. Just guessing by the magnet structure and dust cap. Not familiar with their smaller stuff. I have some 5 yr old 15's that sure resemble yours. Are they 4 or 8 ohm? That might be a clue.

I'm sure there are others with more insight than I.

Cal

 

[kelticwizard]

Coolkhoa:

How's this for a picture? From the 2002 catalog.

 

[coolkhoa]

Wow, thanks, kelticwizard (and Cal Weldon, too)! I bought some of the last units ($10 each) and couldn't find any specs on their website.

A Qts of 0.72...