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8-ohm speaker w/ sub Xover designed for 4- what happens?

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Posted on October 28, 2009 at 17:40:25

riker1384
Audiophile

Posts: 326
Location: Eastern PA
Joined: August 1, 2004

I picked up a pair of CS200W, which are passive KEF 8" subs in the shape of speaker stands. I was thinking I could use them to add bass to a bedroom rig without taking up space. They're designed for the KEF C25 which are 4-ohm speakers. Most bookshelves I look at seem to be 8 ohms. If I hooked up an 8-ohm speaker, would the crossover point go up or down? It might be the end of the world if it went up, since there are 2 subs and the speakers would be right on top.

RE: 8-ohm speaker w/ sub Xover designed for 4- what happens?

djk

23:54:18 10/28/09

RE: 8-ohm speaker w/ sub Xover designed for 4- what happens?

riker1384

08:59:19 10/29/09

RE: 8-ohm speaker w/ sub Xover designed for 4- what happens?

djk

16:02:38 10/29/09

RE: 8-ohm speaker w/ sub Xover designed for 4- what happens?, posted on October 28, 2009 at 23:54:18
djk Manufacturer Posts: 3888 Joined: June 17, 2000	The crossover point would go down, I wouldn't worry about it.

RE: 8-ohm speaker w/ sub Xover designed for 4- what happens?, posted on October 29, 2009 at 08:59:19

riker1384
Audiophile

Posts: 326
Location: Eastern PA
Joined: August 1, 2004

Well, if it goes down too far, it would defeat the point of the subs. I can't find the stock xover point, but the sub's FR is rated up to 120Hz so that's probably as high as it goes. If it goes down an octave, the sub would only be covering 40-60 hz. Is it an octave, or some other factor that it changes by?

I have the 4-ohm KEF speakers, but they aren't the best in the world so I wanted the option of changing that.

I see the PSB Alphas are 6-ohm, though, so that would probably work.

RE: 8-ohm speaker w/ sub Xover designed for 4- what happens?, posted on October 29, 2009 at 16:02:38
djk Manufacturer Posts: 3888 Joined: June 17, 2000	It doesn't change the crossover point for the sub, it changes the crossover point for the sattelite spakers. 6 ohms is code for 'it's really a 4 ohm speaker'.

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