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change amps or speakers

I am powering Eminent technology LFT8bs with quicksilver M60 monoblocks.  No preamp - I am running a dac directly to the amps, which works because with this configuration I am using very little attenuation.  Problem is it is obvious that the ETs require more current and/or wattage- the detail is there but not the punch and there are times when I am maxed out on volume at 12 0'clock and need more. Question is do I change the amps or speakers - I love the quicksilvers and put some serious $ into modifications.  A well respected friend/tech highly suggested I seek out a used pair of PSB stratus golds. I have a medium sized family room and like detail neutrality but need more rhythm and dynamics. Thanks you.
majorc
yogiboy's avatar
yogiboy
5,642 posts
 
Before you make any changes you should try a KT88 type tube. The KT88 is a more powerful tube and will give you a bigger brighter sound than the EL34. BTW, I prefer the KT88 with my QS amps!
djones51
4,947 posts
 
Everyone's likes are different but I would look at efficient speakers with a flat FR if you end up looking for new ones. 
elliottbnewcombjr
5,304 posts
 
Those speakers are for 'midrange lovers'

Without a doubt, I suggest you try new and more efficient speakers with a tighter measured frequency balance.

this from their web site I find funny:

" The speaker is moderately efficient and its impedance averages 8 ohms."

they are very low sensitivity, 83db/1w/1m. you need 4x power to 'get to' equal of a 90db efficiency speaker. That's why you need max volume on your amps, and still not enough.

"frequency balance +/- 4db (in a typical room)". that is adding bass reinforcement of a 'typical' room, and still -4db.

highs fall off -6db (+ 3db needs twice the power. another +3db needs twice the power again, so that is a LOT of diminished sound.

highs 'smoothly' fall off to -12db at 20khz. 12 year olds with wonderful ears couldn't hear those diminished highs, certainly not my 72 year old ears.

majorc OP
76 posts
 
Most of you confirmed my instinct: replace the speakers with more efficient ones that will work with the quicksilvers. Any recommendations in the 3,000 range new or used? 
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