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Enough Current?

I just picked up a brand new in the box Rotel RB-1090 amp. Original owner purchased 2, one for backup, he never used it.

So, I have a pair of Martin Logan CLS IIZ Limited Edition speakers. I purchased them new in 2003. They were the last pair Martin Logan had available, nick of time right? I really have not used these speakers much over the years. In this time they have been sitting in a spare room with covers on them. Now I have the urge to pull them out once again and give a listen.

I wanted some opinions on how well some of you believe the Rotel RB-1090 will drive the CLS? Below is a link to the Stereophile measurements/review.

Something interesting stated in the Stereophile review:

"The RB-1090 also includes overcurrent protection, which operates when the load impedance drops below 2 ohms. Front-panel LEDs—one per channel—indicate the operation of the protection circuitry.

Although the RB-1090's formal specifications state the minimum combined load as 4 ohms, the manual refers to the amplifier's ability to "drive difficult loads with ease, including 2 ohm speakers." When queried about this apparent inconsistency, Mike Bartlett told me that the specifications refer to continuous testing into a fixed resistance; the RB-1090 meets the ETL/UL safety specs at 4 ohms. To produce an amplifier that can handle a 2-ohm resistive load at full continuous power would incur a major cost penalty; arguably, that amplifier would be no better at driving loudspeakers."

I believe the CLS dip to about 1.5ohms in the HF range. This is my worry.

Thanks!!



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Topic - Enough Current? - Lt Einhorn 07:21:30 01/18/15 (19)

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