Don't worry at all.
Very few speakers have a flat impedance. While there are others that can speak to this probably better, the impedance seen by the amp changes depending upon how far the drivers are extended. I used to have Martin Logans, which were nominally rated at 4 ohms, but dipped to 1 ohm at times.
As a rule of thumb (anyone wanna shoot me down here) a good solid state amp should double the output power as you have the output impedance--an amp that does 100W into 8 ohms should be capable of 200W into 4 ohms, 400W into 2 ohms... The same is not true for tube based amps for some reason.
Oh yeah, in the practical realm, I've got a pair of Kappa 8s or 9s (I forget which they are) in my pool room and have, over the years, driven them with everything from a Yamaha integrated, an Adcom, to an ARC D240... They have not yet blown up. Speaking of which, if you are in the DC area, make me an offer. They are a little large for my room... ; )
Very few speakers have a flat impedance. While there are others that can speak to this probably better, the impedance seen by the amp changes depending upon how far the drivers are extended. I used to have Martin Logans, which were nominally rated at 4 ohms, but dipped to 1 ohm at times.
As a rule of thumb (anyone wanna shoot me down here) a good solid state amp should double the output power as you have the output impedance--an amp that does 100W into 8 ohms should be capable of 200W into 4 ohms, 400W into 2 ohms... The same is not true for tube based amps for some reason.
Oh yeah, in the practical realm, I've got a pair of Kappa 8s or 9s (I forget which they are) in my pool room and have, over the years, driven them with everything from a Yamaha integrated, an Adcom, to an ARC D240... They have not yet blown up. Speaking of which, if you are in the DC area, make me an offer. They are a little large for my room... ; )