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Infinity Kappa 9's sound terrible...HELP

Recently I got a pair of Kappa 8's. Plugged them into Adcom 860 preamp and to an old HK Citation 16, GFA-555 and GFA-565's. They sounded...beyond my wildest dreams! Absolutely amazing!

A week later I bought a pair of Kappa 9's. Was really excited thinking they would out preform the k-8's! Plugged them into the same system and they sounded like crap. Tried running each k-9 to 1 GFA-565 and bi-wire them, changed all knobs to flat, experimented with the adjustments on the back of the k-9's in every conceivable position, ran them in standard and extended bass modes...and they still sounded terrible!

Has anyone experienced this before? Any tests or checks I can do to eliminate any doubts of anything? If I can't resolve this on my own, I guess I'll have to take the speakers somewhere...if I can a reliable source between the Philadelphia to Harrisburg, PA area.

Also, if any can suggest any good techs between the Phila and Harrisburg area for amplifier rebuilds (Adcom GFA-555 II models) I would also appreciate getting a name and address.

Thanks guys...appreciate your help!
barricadedbob
rvito
48 posts
 
I own A set of Kappa 9 and when I rotate them into my main system ( powered by 2 Krell Fpb400cx) the bass slam is incredible 
rvito
48 posts
 
I know another issue some have had is no polyfill inside the cabinet. It makes quite a difference.
roberjerman
2,086 posts
 
dstechlabs on the Bay has new and improved crossovers for the Kappa 6, 7, 8 and 9. Prices range from $345, 395, 445 and 495 - with free shipping within the lower 48! These address and remedy the below-2 ohms impedance of the stock x-overs. Overall improvement in sound quality and a more amplifier- friendly load for the amplifier! If I owned any of the Kappa's I would buy a pair of these x-overs!
stimpywan
2 posts
 
Personally, I wouldn't recommend the DS Tech Labs crossovers.  They totally disregard the original designs, with their crossovers.  In the case of the 9's, they turn a 5-way system into a 3-way.  The Semits and Emits are combined together, and the Polydome and Polygraph domes are combined together as well, with their boards.  You might as well buy Kappa 6's or 7's, and not waste your money.

Also, I wonder if the OP ever resolved his Kappa 9 issues?  Did Bill LeGall help out?  It sounded like the woofers might have been miswired too.  Out of phase?
brettmcee's avatar
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brettmcee
93 posts
 
Mr. Legall and his organization appear to no longer want to speak with me (via email) since I alerted them they sent back polydomes with a crack in one of the mount plates. 

?

I will open up the 9’s at some point to check the wiring on the 9’s. Something is wrong. A Carver Signature Sunfire at 635watts should push them but doesn’t. The 9’s are too big for my room as well 12x17.

For now I am enjoying my 8’s and a Crown XLS1500 amp...amazing an amp I picked up for $75 generally sounds better than Adcom 555ii and the Carver. More three dimensional...Carvers highs were more pleasant, Adcom mid bass was tighter.

:-)
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