JBL发表新的大型监听扬声器：New JBL Pro Larger Format M2 Studio Monitor Coming

jblnut · 发表于 2013-1-6 00:55

澳門客发表于 2013-1-5 23:54
The D2 Dual-Diaphragm，Dual Voice coll High-Frequency Compression Driver，意思是雙振膜雙音圈高音驅動 ...

澳佬，你太牛奔了！你咋啥都知道呢[s:97]
they do share some elements but are quite different in operation... the JBL diaphragm pair
being driven by the -same- signal and then routing/summing the outputs to a common throat (via a complex phase plug), where the BMS
driver is a dual-band device (one diaphragm for lower frequencies, the other for higher frequencies... a crossover being required,
老美评论;确实和BMS很像，但还是有很大的不同。。。。。

jblnut · 发表于 2013-1-6 00:58

交易区新帖推荐

4592ND - 2" NEODYMIUM COAXIAL DRIVER
BMS 4592ND IS A HIGH POWER DUAL VOICE COIL 2" COAXIAL HIGH-MID FREQUENCY COMPRESSION DRIVER
EXTENDED FREQUENCY RANGE FROM 300HZ TO 22KHZ
FEATURES AN ULTRA LIGHTWEIGHT NEODYMIUM MAGNET
PATENTED DESIGN INCLUDES 2 SUBSYSTEMS IN 1 DRIVER
EACH DRIVER COVERS A SMALLER FREQUENCY RANGE FOR HIGHER POWER HANDLING & DYNAMIC RANGE W/ VERY LOW DISTORTION
FOR ALL HIGH QUALITY HIGH FREQUENCY APPLICATIONS INCLUDING CONCERT, ARENA, THEATRES, DANCE CLUBS, SOUND REINFORCEMENT, ETC.
C8-8 OPTIONAL PASSIVE 2-WAY 6.3KHZ CROSSOVER AVAILABLE

Throat Diameter	2" / 50.8mm
Impedance	8 ohms
Frequency Range	300Hz - 22kHz
Sensitivity (1W/1m)	118dB 1w @ 1m w/ 2242 horn
Sensitivity (1W/1m)	112dB 1w @ 1m w/ 2230 horn
Frequency Range
High Frequency	6kHz to 22kHz
Mid Frequency Range	300Hz - 7kHz
High Frequency Power Rating
AES	80 Watts @ 6.3kHz
Peak	320 Watts @ 6.3kHz
Mid Frequency Power Rating
AES	150 Watts @ 400Hz
Peak	1,000 Watts @ 500Hz
Recommended Crossover
High Frequency	6.3kHz @ 12dB/octave
Mid Frequency	300 Hz @ 12dB/octave
Voice Coil Diameter
High Frequency	1.75" / 44.4mm
Mid Frequency	3.5" / 90mm
Flux Density
High Frequency	2T
Mid Frequency	1.95T
Efficiency	35% (300Hz -5kHz)
Mounting Information
Overall Diameter	5.2" / 132mm
Overall Depth	4.45" / 113mm
Mounting
- 4 M6 threaded holes 90° apart on 4" diameter circle
Net Weight	5.06 lb. / 2.3 kg.
Materials
Diaphragm	Polyester
Voice Coil Material	Copper Clad Aluminum (2 Layers)
Voice Coil Former	Kapton
Magnet	Neodymium

jblnut · 发表于 2013-1-6 01:14

Exploded view of the D2430K based on 3-inch voice coil with 1.5-inch exit. 1. – front adapter, 2. – front motor, 3 – front diaphragm assembly, 4 – front phasing plug, 5 – rear phasing plug, 6 – rear diaphragm assembly, 7 – rear motor.

jblnut · 发表于 2013-1-6 01:35

澳佬不知注意到没有？BMS的上限只到22K,而D2能达到40K.

澳門客 · 发表于 2013-1-6 01:37

本帖最后由澳門客于 2013-1-6 01:44 编辑

其他雖然JBL死不說明這是Coaxial同軸，只是很有技巧說明是dual-band device二頻段驅動器，但結構上，這dual-band device二頻段事實上是安裝在同一軸線上，相信在美國亦有專利問題，就看JBL的律師團隊如果應付了[s:97][s:97]