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anyone using (or have used) Krell monoblocks??

622 Views 12 Replies 5 Participants Last post by  rider
I'm considering upgrading my fronts and center amps from Krell KAV-2250s (which I love) to an FPB-350Mcx monoblock for each channel.


Is anyone using (or previously used) Krell monoblocks, or have demoed them?

Any experience would be appreciated, since this would be an expensive upgrade for me -- but PLEASE: just comments from those who have used or listened to them, not hearsay/speculation/theories/guessing.


Thanks.
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what speakers you are using?


try 20000+ there are quite a few krell users


over here there are lots considering all amps sound the same
What pre/pro are you using?


I agree that would be an expensive upgrade. I've heard the monoblocks, they are incredible, but...


I wonder if you would be able to tell the difference in a HT set-up? An optimized, 2-channel rig, maybe. But you are starting with a very nice amp in the 2250. Are you running them bridged?


Sounds like you are chasing that last 1%. More power to you...


John
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Originally posted by John Robert
What pre/pro are you using?
I'm using the Krell HTS 7.1

Front speakers are Mirage OM-5 towers; center and surrounds Mirage also.

Quote:
Originally posted by John Robert
I've heard the monoblocks, they are incredible, but...


I wonder if you would be able to tell the difference in a HT set-up? An optimized, 2-channel rig, maybe. But you are starting with a very nice amp in the 2250. Are you running them bridged?


Sounds like you are chasing that last 1%. More power to you...


John
I went from the Krell Showcase amp to the 2250s (not bridged) and I heard a dramatic difference. You said the monoblocks sound incredible; but do you think I'd only really be gaining a 1% difference over the 2250s?
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Originally posted by rider


I went from the Krell Showcase amp to the 2250s (not bridged) and I heard a dramatic difference. You said the monoblocks sound incredible; but do you think I'd only really be gaining a 1% difference over the 2250s?
Yes, since the 2250 is already in the very upper tier of amps, I do think the gain would be small, especially considering the $8K difference per channel (am I doing the math right?). But obviously, what matters to you is the determining factor. Since you are dropping this kind of coin, you must have a dealer that appreciates your business. How about an in home trial on the monoblocks? Seems the least he could do...


What are you doing with the 4th amp channel on the 2250?


John
Quote:
Originally posted by John Robert
Since you are dropping this kind of coin, you must have a dealer that appreciates your business. How about an in home trial on the monoblocks? Seems the least he could do...


What are you doing with the 4th amp channel on the 2250?


John
My dealer doesn't have any in his showroom. I called Krell, and they said they'd build a pair (currently 1 month+ backorder) and send them to him for me to demo -- I was pretty impressed.


I currently have 2 2250s and 1 3250; 7 channels total (1 per spkr.).
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IMO you will probably notice a more dramatic difference if you upgrade the speakers. You already have excellent amps.
Quote:
Originally posted by rider
My dealer doesn't have any in his showroom. I called Krell, and they said they'd build a pair (currently 1 month+ backorder) and send them to him for me to demo -- I was pretty impressed.
Wow, that's a significant commitment to customer service. Let us know what you think after your demo...


John


BTW - I was also somewhat struck by the disparity between your electronics (both current and proposed) and your speakers. What are your thoughts?
Quote:
Originally posted by John Robert
BTW - I was also somewhat struck by the disparity between your electronics (both current and proposed) and your speakers. What are your thoughts?
The Mirages have an identical set of drivers (mid and tweeter) that fire out the back, so in addition to direct sound, they re-create the complement of reflected sound that is present when hearing something "live." They give an incredible holographic soundstage that gives the illusion of being indepentent of the speakers; the performers/instruments seem to "be there" in 3-D space, and you can walk around the room, including behind the speakers, and it's like you're walking among them. There's really no "sweet spot" that you loose as soon as you move a few inches out of focus.


I haven't heard any other speakers so far (including Definitive) that have the ability to make the sound totally leave the box and seem live and truly 3-D; especially for HT, where only 1 person would be able to sit in the sweet spot.
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Quote:
Originally posted by rider
The Mirages have an identical set of drivers (mid and tweeter) that fire out the back, so in addition to direct sound, they re-create the complement of reflected sound that is present when hearing something "live." They give an incredible holographic soundstage that gives the illusion of being independent of the speakers; the performers/instruments seem to "be there" in 3-D space, and you can walk around the room, including behind the speakers, and it's like you're walking among them. There's really no "sweet spot" that you loose as soon as you move a few inches out of focus.


I haven't heard any other speakers so far (including Definitive) that have the ability to make the sound totally leave the box and seem live and truly 3-D; especially for HT, where only 1 person would be able to sit in the sweet spot.
That bipolar sound seems to generate strong feelings both ways. Many, like you, seem to swear by it. Sounds like you have surmounted some of the placement challenges that others have found difficult. I know Def Techs require 3' or so of clear space - do you find the Mirage's to be the same?


John
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Quote:
Originally posted by John Robert
That bipolar sound seems to generate strong feelings both ways. Many, like you, seem to swear by it. Sounds like you have surmounted some of the placement challenges that others have found difficult. I know Def Techs require 3' or so of clear space - do you find the Mirage's to be the same?


John
Yeah, they definitely need breathing room. 3 or 4 ft. from the wall and they REALLY open up.


BTW: Definitive is bipolar; Mirage is "omnipolar." Huge difference in sound: Def. doesn't come close to the 3-D holography of Mirage, IMHO.
If you have not already done so I think the best use of your money at this point would be to have a professional come in and accoustically treat your listening room.
Quote:
Originally posted by Grond
If you have not already done so I think the best use of your money at this point would be to have a professional come in and accoustically treat your listening room.
That's definitely high up on the "to-do" list. Any recommendations for someone in the DC/N. VA area would be appreciated.
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