Project everest DD67000
© 2012 HARMAN International Industries, Incorporated. All rights reserved.
JBL, Bi-Radial and SonoGlass are trademarks of HARMAN International Industries, Incorporated, registered in the United States and/or other countries. The “Hear the truth” logo is a trademark of HARMAN International Industries, Incorporated.
Features, specifications and appearance are subject to change without notice.
HARMAN International Industries, Incorporated
8500 Balboa Boulevard, Northridge, CA 91329 USA
www.jbl.com
What’s included:
• 1 JBL Project Everest DD67000 three-way,
floorstanding speaker
• 4 floor spikes
Specifications
• Speaker type: three-way floorstanding
• Low-frequency transducer: Dual 15" (380mm) three-layer,
pure-pulp sandwich/foam core cone woofer
• High-frequency transducer: 4" (100mm) pure-beryllium
compression driver
• Ultrahigh-frequency transducer: 1" (25mm) pure-beryllium
compression driver
• Maximum recommended amplifier power: 500 watts
• Frequency response (–6dB): 29Hz – 60kHz (half space);
45Hz – 60kHz (anechoic)
• Nominal impedance: 8 ohms
5.0 ohms @ 80Hz
3.0 ohms @ 40kHz
• Sensitivity: 96dB (2.83V/1m)
• Horn directivity (horizontal x vertical):
High-frequency: 100o x 60o
Ultrahigh-frequency: 60o x 30o
• Crossover frequencies:
150Hz (LF1 6dB/octave)
850Hz (LF2 24dB/octave)
20kHz (UHF 24dB/octave)
• Control functions:
HF level control (low, mid, high)
LF level control (low, mid, high)
LF/HF drive mode bars (normal/bi-amp)
System orientation bars (left/right)
• Dimensions (H x W x D): 38" x 43-5/8" x 18-1/2"
(965mm x 1109 x 469mm)
• Weight: 302 lb. (137kg) without grille
312 lb. (142kg) with grille
• Package weight: 383 lb. (174kg) 人耳听不到的（20k一60K）比人耳听到的（29Hz／－6db）重要。 0分 超高音，低端不应到850Hz，起码在5K甚至更高以上。中音头，整个工作区间太低了，不相信。而两个15寸低音，典型的专业型，不太可能工作在150Hz以下。850Hz、150Hz两点不太可信。
难道是：其一15寸在150一850Hz，号角在850一20K，超高在20K以上，那另一只15寸在150Hz以下？
坐等廿兄解答 果然是我说的难道？不小心去到4分频？;P 20-20 发表于 2014-7-10 08:52 static/image/common/back.gif
呵呵
E兄
你应该比我清楚的
我懒得搜，那号这么大，也不应低至850Hz。 20-20 发表于 2014-7-10 08:54 static/image/common/back.gif
这是什么意思呢？
呵呵，高频可至60K，而低频才到29Hz（-6db，还依靠反射加强）。该要的没，不需要那么高的刻意标出来。 本帖最后由 王梓俊- 于 2014-7-10 13:04 编辑
DD66000的频响 :) :) 20-20 发表于 2014-7-10 07:37 static/image/common/back.gif
也有一种说法是：其一15寸在850Hz以下，那另一只15寸在150H以下。并由于兩只低音频宽不一样，而有严格的左右 ...
对，两个15寸负责的频率是不一样的。但还是算三分。 王梓俊- 发表于 2014-7-10 13:00 static/image/common/back.gif
DD66000的频响
谢谢呵。宁愿放弃灭鼠器，也要补回低频。;P 厂家说是用来把电容充电，减少切换冲击。
应该是这样吧
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