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speaker impedance question... (1 Viewer)

MikeSme

Auditioning
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Jul 8, 2004
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4
I’m a finish Carpenter by hobby and a Home Theater enthusiast…My question is this…
I’m building a set of custom speakers from solid 1” thick Maple. If I take two 5” 4 ohm drivers and hook them in a series, would this make it an 8 ohm driver, or do I want to hook them in parallel for this? Cause you see…I bought fifteen 5” 4 ohm aluminum mids from MCM, and I’ve got the proper math for the speaker box and unlimited access to a mill shop (woodmeister corp).

Thanks guys…
 

CalvinCarr

Supporting Actor
Joined
Dec 4, 2003
Messages
512
You'll want to wire them in parallel. Do a google search on parallel wiring and you'll get all kinds of information.
 

Brian Fellmeth

Supporting Actor
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Jul 30, 2000
Messages
789
No you won't. That would halve the load to 2 ohms which will burn up any but the most robust, expensive amps if played loud. Wire them in series for an 8 ohm load.
 

Rutgar

Second Unit
Joined
Jan 17, 2004
Messages
495
Wiring two 4 ohm speakers in parallel will give a nominal impedance of only 2 ohms. Which, can burn up a low quality amp very quickly. Series will be 8 ohms.

Speaker building is a complex endeavor. There's far more to it than building a "box", and throwing some speakers into it. I would suggest you check out sites like Madisound and Parts Express. They have books, software, and components, that are essential in building successful DIY speaker enclosures.

-Rutgar
 

MikeSme

Auditioning
Joined
Jul 8, 2004
Messages
4
Hey, thanks guys...I have a CAD for building speakers. It takes everything into account, except how to make a 4 ohm driver an 8...! I'll post pics of the speakers when they are done...you guys will be impressed! I even have 3/4" x 8" Cherry planks. I can build things in this shop most people can only dream of. Check out the site...just ad a www and a .com to the name above, some real fancy mill work.
 

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