LSi9 or LSi15

NewHTguy

Face wrote: »

LSi9's dip to 2ohms, the LSi15's only dip to 3ohms.

Are you sure of that?

http://www.polkaudio.com/forums/showpost.php?p=828876&postcount=9

Anyway, are you saying that that Lsi 9's are more difficult to drive overall?

Face

Yep, I measured them both a few months ago.

Hilbert

I wonder if the guys who recommend 9s over 15s would mind giving a reason? (Or several.)

I ask because I have 9s and am constantly tempted to pluck a couple of 15s off the Polk Direct site. I'd like to be talked out of this for the obviou$ rea$on$.

treitz3

To me, the 9's represent a more accurate representation of the spectrum. They image better and do not exhibit the slowness, boom or muddiness that the LSi15 does. It's just a more musical speaker IMO.

Hilbert

Ah, thank you---just what I was hoping for.

My 9s are just a bit boomy at times; I thought 15s might be an improvement.

disneyjoe7

tonyb

Hilbert wrote: »

Ah, thank you---just what I was hoping for.

My 9s are just a bit boomy at times; I thought 15s might be an improvement.

Boomy eh....what are you driving them with ? How are they set up ? What kind of cables are you useing ? What's the other gear ? Do you use a sub ? Whats the crossover set at ?

If your having a problem getting good sound out of the 9's,just say so and maybe we can help you tweek them a bit.

jimmydep

treitz3 wrote: »

To me, the 9's represent a more accurate representation of the spectrum. They image better and do not exhibit the slowness, boom or muddiness that the LSi15 does. It's just a more musical speaker IMO.

I haven't noticed any "Boominess" (is that a word) with the LSi-15's, I have found that speaker placement can be a little tricky, especially in a less than perfect room, which may have to do with the side fireing woofer.

When listening to the 15's in two channel, I don't use a sub, and the low end is accurate and clean.

I found the imaging on the 15's to be quite good although small changes in speaker placement (distance from walls, toe-in, or toe-out) can significantly change the soundstage and imaging.............so if you like to tinker....

I listen to many genre's of music, but feel the Lsi's sound best with, female pop, country, and jazz.....worst with, that screaming type of hardcore noise my son listens to.

Hope this helps.

Jimmy

Hilbert

tonyb wrote: »

Boomy eh....what are you driving them with ? How are they set up ? What kind of cables are you useing ? What's the other gear ? Do you use a sub ? Whats the crossover set at ?

If your having a problem getting good sound out of the 9's,just say so and maybe we can help you tweek them a bit.

Thanks for offer to assist.

The 9s sound great about 99% of the time. Boominess happens on only a handful of CDs, mostly string quartets, mostly recorded in the 80s, so maybe they weren't well recorded to begin with. Boominess more pronounced on playback via Oppo 83 than on Cambridge 640C. The other gear is Emo xpa-5 (contemplating upgrade to Wyred 4 Sound ST 500) and USP-1. HP Crossover set at 60 hz; LP at 80 (with caveat the USP-1 affords only very approximate control over these settings). The speakers are at right angles to the wall, 6.5 feet apart and a foot away. I experimented and found right angle offered best imaging.

Cables are all from Blue Jeans; I intend to invest in Signal cable bi wire at some point.

I shall be interested in any and all suggestions for improvement, but I repeat the boominess is really pretty minor.

Bernal

For music? the Polk LSi15.:)
My settings to use bi-wiring: HF "Oxygen-free copper / Oxygen-free high thermal conductivity"