Alan Roberts wrote on Thu, 20 August 2009 14:57 |
I've been concerned about what I perceive as a drop-off of high-frequency content after about 35 feet. Now, I will admit that my volumes are low, but it seems that other speakers I use may be better at projecting beyond 35 feet. I need to play with this a little more to make sure I'm not imagining things. |
Dick Rees wrote on Thu, 20 August 2009 14:24 | ||
Alan.... What may be perceived as a "drop off" in HF 35' out into a room may actually be a result of the direct sound (at those frequencies) being overwhelmed and/or phase cancelled by the reflected sound. All bets are off once you go beyond the critical distance. DR |
Dick Rees wrote on Thu, 20 August 2009 15:24 | ||
Alan.... What may be perceived as a "drop off" in HF 35' out into a room may actually be a result of the direct sound (at those frequencies) being overwhelmed and/or phase cancelled by the reflected sound. All bets are off once you go beyond the critical distance. DR |
Don Boomer wrote on Wed, 26 August 2009 12:41 |
Hey Art What's the source for the graph? |
Ivan Beaver wrote on Wed, 26 August 2009 13:29 |
But take 2 loudspeakers. One that is 6dB down at 15K and one that is flat to 15KHz. At any distance the one that has the extended response will STILL have more HF-because it started with more-assuming the rest of the system was level matched. The air loss will reduce the level of both the same (dB wise). The air doesn't care what what the starting level is (in a linear condition). |
Art Welter wrote on Wed, 26 August 2009 17:30 | ||
It is on the EAW site. |
(Brian) Frost wrote on Wed, 11 August 2010 13:16 |
I now own 8 of the k10s and 2 of the k12s. I do many gigs with k10s over a single small sub with great results. I dont find the k12 gets that much louder tho it does a little better throwing further and does a little better without a sub- tho less than you might think. I use them for monitors weekly and every singer seems to compliment how good they sound. Im all around thrilled at their size, weight, and price to quality ratio. I expect them to make me money for a long time. Dont know of a box that competes in its price class. I do wish I liked the ksub more because its price and form are very attractive but it just doesnt do it for me. |
Michael Lewis wrote on Tue, 28 December 2010 08:09 | ||
Wow.. you got 8 K10s! I only have 2 and looking forward to my 2nd pair. Question I have is whether any of you have paired the K10s, 2 per side. I wanna know how much more do you really gain from the coupling effect (not in theory but in practice) and how much improvement in terms of volume and bass response. Any comments are welcomed. So far, i find the speakers to have quite good volume and bass by itself, high frequencies are awesome especially on vocal boost but for larger gigs or dance stuffs, I have to rely on my 18" sub. Are the Ksubs that bad? What settings do you normally go for the deep and HF switches? Mike |
Art Welter wrote on Wed, 29 December 2010 00:46 | ||||
Adding a second pair will give you 6 dB more output down low, but the very wide dispersion in the high frequencies will cause lots of comb filtering, so there will be areas where there is actually less HF than with a single. Intelligibility suffers with two per side, unless you need over 140 degrees of dispersion. As it is, I found the high end needed to be boosted. The wide HF vertical dispersion also causes a lot of ceiling reflections in most rooms. I made a pair of acoustical "clouds" that fit in the top handle and extend forward about 14 inches with egg crate type foam on the bottom, really helped clean up the high end. The "deep" switch seemed too hyped to be of use live. The "vocal" setting probably would be usable if you had no other EQ, for instance plugging a microphone directly in to the speaker with. The Ksub gets loud for it's size, but does not go very low. It is a small sub, but very deep (front to back dimension) for it's size, which can limit where it is placed. |
Quote: |
thanks for the helpful info. I'll only use 2 per side in wider rooms. In narrow and long rooms i'll use them as mid fills. Can the ksub compete with a cheap 600W sub? How loud is loud? |
Art Welter wrote on Tue, 28 December 2010 15:31 |
The QSC specs the K sub at 130 dB peak, with a -6 dB point of 48 Hz, and that peak point is probably up around 100 Hz. The K10 is rated at 129 dB peak, -6 dB at 60 Hz. So, using the same rating, the K sub is only 1 dB louder than the K10, and only goes about 1/3 octave lower. Many people would prefer a sub that is 3 to 10 dB louder than their top cabinet, and goes an octave lower. |
Grant Conklin wrote on Tue, 28 December 2010 21:27 | ||
I own a couple K10's and I think they're great. However, I'd love to know how they achieve their peak ratings. If my memory serves me right, I believe I saw them go into limit somewhere around 115db @ 1m. |
Jay Barracato wrote on Thu, 17 February 2011 04:25 |
I run two k10's over 181's and it is a great small rig. I think for a lot of music 1 181 wpuld keep up fine with 2 k10's. |