It was a Crest PA amplifier with 300Wpc 8ohm. We played as loud as we felt the array could handle. The woofer did really move, and i was just waiting for the large windows to shatter. This was a conventional A/B design but i think it was PWM power supply. Not the most refined and detailed sound, but rock solid fundament and not harsh in any way.
BTW: Most class D i have heard (mainly based on B&O ICE or Tripath), sounds restrained and quite harsh in the treble. Same goes for Class I (Crown I-tech)
2213 + 2435HPL w/aquaplas + H9800 (Matsj edition)
I measured a RF-63, and it showed a huge dip in the upper midrange. It was quite wide as well. Then it came full force from 8-9Khz, with a rize towards 20KHz. No rolloff. On-axis mind you.
After some research we came to the conclusion that the dip was the result of the inevitable diffraction cancellation you get from "flat mouthed square/circular) horn mouths. Ref. Geddes paper on sound radiation from circular apperatures from 1993 (AES)
2213 + 2435HPL w/aquaplas + H9800 (Matsj edition)
Which model of Crest did you use? How much attenuation did you select on the dials? What was the input V?
Using a pro amp with -dB dials makes it easy to know exactly how much W you are sending into the speakers
As I understand it, Yamaha uses proprietary "D class a-like system" EEEngine.
EEEngine
EEEngine (Energy Efficient Engine) Technology makes more efficient use of AC power by reducing power consumption and heat generation without sacrificing output power or sound quality. When power requirements are low, the system uses a highly efficient current buffer to transparently switch input power on and off as needed. As power requirements increase, an independently responding auxiliary power line supplies additional power as required. Output isn't compromised because the auxiliary power line is driven by the power supply voltage which maintains maximum output to the speaker load.
As you probably have guessed i find the Klipsch way harsher than the Array ( i worked at a Klipsch dealer for 5 years). My believe is that the dip in the Klipsch means, that the upper harmonics is relatively unaturaly strong compared to the lower harmonics. There at not many fundamentals in the 5-7K range. This making the sound a bit clinical and "analytical"
When it comes to what is annoying, personally i really hate excessive "sssss" sounds. This sound is 8-10KHz.
2213 + 2435HPL w/aquaplas + H9800 (Matsj edition)
Listening fatigue with speakers of this caliber points to poor placement, poor room treatments and/or an amp that's clipping. Could be all 3. Based on the photos, room treatments are certainly needed. Most people would be reaching to turn the Arrays UP, not down, presuming proper setup. That front wall alone is a source for many bad reflections, and they should be pulled out as far as possible away from it even with treatments. But no amount of electronics fiddling, EQ or the like will make a bad room better.
Then my conclusion is that you have a relativly high reverberation time in your room at thoose frequencies. And that the wider vertical dispersion of the Array horn makes it worse. Try putting something porus on the ceiling and floor.
Also makes sure that you are not confusing the SSSSS sound with the SCH sound. The SCH is located in the 1-3KHz range.
2213 + 2435HPL w/aquaplas + H9800 (Matsj edition)
2ch: WiiM Pro; Topping E30 II DAC; Oppo, Acurus RL-11, Acurus A200, JBL Dynamics Project - Offline: L212-TwinStack, VonSchweikert VR-4
7: TIVO, Oppo BDP103D, B&K, 2pr UREI 809A, TF600, JBL B460
The interesting curve is the power response one (4th curve from top, the blue one one the array measurement), not the on-axis response.
The > 15khz response should not be a real problem. It is more in the 5khz-15khz range that things happen.
You could try a gentle shelf filter above 5khz, slowly reducing gain up to something like -6dB at 20khz (~-3dB/oct).
But that would only be a quick fix to get that mellow sound your party mates were accustomed to.
The real fix would be to treat your room.
some explanation on the axial vs power reponse can be found here, page 2:
http://www.jblpro.com/catalog/suppor...=303&doctype=3
The Array 1400 is a constant directivity loudspeaker, whereas the Klipch is not (a horn does not guaranty constant directivity).
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