Notwithstanding all that nonsense in the other (now locked) thread, did you get to hear them?
Note to all - if you want to talk about active crossovers, start your own thread.
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I am looking forward to his impressions of the LS50's.
All the best
Rick @ Musicraft
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When reading the KEF LS50 and R100 specs, I noticed their impedance both dip to 3.2 Ohms.
Looking at some other small (nominally 8 Ohm) speakers, they don't dip anything like as much. (Spendor SA1 minimum 6.3 Ohms, Spendor S3/5R2 minimum 6.2 Ohms, PMC DB1i minimum 6.3 Ohms, MA GX50 minimum 4.85 Ohms).
Is it right to say the 3.2 Ohm minimum impedance figure suggests quite a challenging load?
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That is low and certainly would imply a difficult load. As for 'challenging' it is all relative. I certainly would not like to drive them with a 12watt single-ended
valve amp! They should be listed as 4ohm nominal speakers.
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Kef should really rate these speakers as 4 ohm nominal! A speakers minimum impedance really should be not much lower than 8/10 its nominal figure.
So for a 8ohm nominal speaker the minimum should be no lower than 6.4 ohms.
A 4ohm nominal speaker should not drop much below 3.2 ohms.
It also depends how reactive they are and whether there is a large phase shift around the minimum impedance.
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I didn't get a chance to try a much better amp (will do when they come in for demo), but the Nait XS and Audiolab 8200P power amp drove them fine. Most of my listening was done on an 8200CDQ CD pre and 8200P power amp system.
David @Frank Harvey Hi-Fi, Coventry
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FWIW, the KEF speakers were being driven by the Arcam A38 amp in the Munich show demo last week.
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The Chili Peppers' Blood Sugar Sex Magic was sounding nice and tight, with nice weight to the kick drum, and with as much detail as I have heard on the snare drums (on more expensive speakers, I mean). The only boom I was hearing was our demo room, which isn't perfect. The first couple of tracks of the Atticus Ross/Trent Reznor Social Network soundtrack, whilst not having the scale and depth of the Blades, seemed just a detailed and energetic - the LS50 has even more in common with the Blades than the R series does.
I also think that the UniQ's benefit of it's wide dispersion and imaging is realised more fully with the LS50's, which I think is down to the fact that the cabinet is playing no part in the presented sound. Like the Blade cabinet, the front facia curves back from the driver, eliminating reflections that a flat front panel would normally introduce.
For AV, I like a lot of detail. Many hi-fi speakers don't cut it for me, but the R300's have been pretty amazing. Having recently tried out the Audiolab 8200AP in my system, they're sounding even better than ever, and have really opened up purely because of this processor. I could quite happily live with the current sound that I have. But after what I heard earlier, I need to get a pair of LS50's home and try them out directly against my R300's. As I mentioned earlier, I think time spent with these will reveal their true strengths, as they're not immediately apparent.
Apologies for the odd look - I think because I was shifting stuff around, copying and pasting, somethign weird has happened. I've edited it to put gaps inbetween paragraphs, but they're refusing to show up!
So...... Active crossovers... What's the deal?
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You''ll get your bottom smacked.! Passively of course.
Nah.. I've met JD in person...... I think I can take him.
You should give one of those T-shirts away free with ever pair of KEF LS70 sold.
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Whatever else you may be David, I applaud your taste in music. Particularly BoC, but I like everything on your list!!
edit...not heard FNDMNTL... which will hopefully be remedied with Spotify.
edit 2. That sounds a bit rude, it isn't supposed to be...
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