High sensitivity (99) with mid powered (50 to 100 wpc/tube) amps?


Sorry: my thread title should have read "high sensitivity speakers with mid powered tube amps?"

Are there draw backs or ramifications to running a pair of speakers which list the sensitivity at 99 with amps producing 50 wpc? (Specifically I was looking at a pair of open box KLIPSCH - Forte IV) and specifically I would be driving them with a Cary V12 rated at 50 wpc in triode and 100 wpc in ultralinear. (I know that I have the power to drive them, but I am thinking that they are usually paired with lower powered, such as SET, amps, and I was wondering if they might not be suitable to be paired with a beefier push pull amp.)

What interests me about these speakers in that they seems relatively small (HWD:: 35.75" x 16.63" x 13") and they would be near-field in a quite small room. Would they be a good speaker for near field? (I note that they are pretty low to the ground, tweeter wise) Also I note that they are biwireable, so I could continue to use my current runs of shotgun biwirie.

Also, are the diaphragm compression driver that they list what is also known as horns? And as it is a 3-way speaker with 12" LF drivers, I was thinking that I could retire my ancient sub.

Doing some reading/searches through posts & users say close to the wall is okay (my B&W 805s are close to 4 feet from wall) so that & no sub would make my small room bigger. Is there an "in your face shout" from horn drivers?

Thanks in advance for any input on this.

immatthewj

Showing 3 responses by oddiofyl

They are very different from your 805.   I will use my sub sometimes but they really don't need a sub.   I have my sub crossover set low, it's only playing below 50 hz with a steep crossover slope. 

I was running my Forte IV with a pair of 40 watt Quicksilver mono amps and for me it's plenty of power and sounds great.   I also run them with a 300b Amp that's only around 7 watts.   Sounds beautiful, but runs out of steam if you crank it up loud.   

I think that would be a great combo,  especially where you can switch between triode and Ultralinear .   It's like having an amp with two personalities .

 

 

 

 

Heresy are great but Forte IV are much better.  I replaced my Heresy III with the Forte and they give you a lot more low end with the same footprint.  Heresy need a sub to sound like a full range speaker.