LSi15 and LSi9 Switch ?

bankshot

Quick queastion, not sure if anybody will know this.

Anyways, I have a pair of LSi9s. From one of them the mid driver has lower output than the other drivers. I was going to replace it with an extra LSi15 driver I have, but the model # of the driver in the LSi15 and the LSi9 dont match.
Should I still go ahead and change them or would that damage something?

cfrizz

Bank, I believe they are designed to be that way! Leave them alone.

bankshot

cfrizz wrote:

Bank, I believe they are designed to be that way! Leave them alone.

I know what youre saying, but I meant the upper woofer.
There is plenty of bass, but the midrange is definately unbalanced.

SKsolutions

If the drivers are of the same number, (upper and lower) in the same cabinet, then I would think that they are identical and interchangable. You should maybe do some research here on your own first, but I doubt you would encounter a problem. It would be cost prohibitive to have the drivers be that tailored: i.e. of certain impedance/moving mass/Rfreq/TsQ////// ect. I would think that they are of the Plug and Play variety. I'm interested, but not enough to look it up, so if you would care to, shoot me an IM when you find out, that would be cool. GL

Eric W

Although the drivers look the same, they are not the same. The LSi9 uses the RD5534-1 while the 15's use the RD5535-1.

If you are referring to the upper driver having more midrange output then the bottom one, they are designed that way. The lower driver plays only bass and midbass up to 200 Hz, while the upper driver will play up to 2.4 Khz.
http://www.polkaudio.com/education/article.php?id=23

However, it sounds as though one side sounds different then the other. If this is so, I recommend swapping just the top midwoofer from one speaker to another and seeing if the problem stays within the cabinet or follows the driver. If it stays within the cabinet, it is either the crossover, or room acoustics. If it follows the driver, then it is the driver at fault.

bankshot

Eric Wong wrote:

Although the drivers look the same, they are not the same. The LSi9 uses the RD5534-1 while the 15's use the RD5535-1.

If you are referring to the upper driver having more midrange output then the bottom one, they are designed that way. The lower driver plays only bass and midbass up to 200 Hz, while the upper driver will play up to 2.4 Khz.
http://www.polkaudio.com/education/article.php?id=23

However, it sounds as though one side sounds different then the other. If this is so, I recommend swapping just the top midwoofer from one speaker to another and seeing if the problem stays within the cabinet or follows the driver. If it stays within the cabinet, it is either the crossover, or room acoustics. If it follows the driver, then it is the driver at fault.

Thanks for the info Eric, and yes the unbalanced sound stays with the driver.
Guess Ill have to send it in.