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  • Delling is a compact floorstanding 2.5-way loudspeaker using state of the art Seas Excel drivers.

    The woofers are two E0049-08S W16NX001 . These speakers are really good at producing deep bass in small enclosures. The chassis and surround has been designed to maximize the available radiating area. The chassis has the same outer diameter as our 15cm chassis, but significantly larger radiating area, and also more depth to allow for long excursion.

    The tweeter is the widely used E0011-06 T25CF002 "Millennium" . Appreciated by builders of our kit's for years, and and also selected by Siegfried Linkwitz for use in his Orion dipole speaker, this tweeter is well known for it's accurate and effortless reproduction of the high-frequency range.

    Enclosure design:

    The woofers T/S parameters indicate that these drivers may be used in very small boxes. In this case we have oversized the volume a bit to extend the frequency range even further into the bass region. The front baffle is narrow, and the height of the cabinet is sufficient to bring the tweeter on axis in a normal listening chair. Net cabinet volume is 24 litres.

    The cabinet is braced with horizontal MDF shelves that has holes to allow for free air-flow. The braces are placed with different distance to each other. This will distribute the panel resonances over a broader frequency range. To further reduce panel resonances you may add bitumen based damping sheets on the inside of the cabinet walls.


    We have used 140g of Rockwool for damping of the cabinet, with 1/3 of this amount behind each of the woofers, and the last 1/3 in the space between the two lower braces.



    The simulated halfspace response in a 24 liter cabinet with a Helmholz frequency at 40 hz predicts a -3dB point at 43 Hz.

    Crossover design:



    The crossover is a 2.5-way topology. The lower woofer fills in the frequency range below the baffle step. Both woofers are filtered with a single series inductor and a notch filter. The tweeter is filtered with a 3rd order network. This results in a summed response that is flat on the listening axis.
    All drivers should be connected with the same polarity.
    The crossover frequency is 2.8 kHz.

    Measurements:
    The measurements are done in a free-field anechoic chamber at 1 meter on tweeter axis with an input voltage of 2.83 volts.

    Minimum impedance is 4.2 ohm at 175 Hz.
    The measured axial frequency response variation is +/- 1.5dB between 65 Hz and 20 kHz.



    Download Delling cabinet drawings
    Download Delling cabinet parts list
    Download Delling crossover schematics

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  • 环球佳酿举行新品发布会 百余款酒品集中发售 2019-07-26
  • 印度纪行:从女佣到女工的距离 2019-07-17
  • 泸州老窖刘淼:品牌基因是推动酒企发展的终极力量白酒 泸州 2019-07-17
  • 京发展租赁型职工集体宿舍 人均面积不得低于4平方米 2019-06-02
  • 《中国教育报》电子版 2019-06-02
  • 小萌们以为计划就是一拍脑袋一张嘴那么简单? 2019-05-29
  • 公众论坛官方网站首页·南方都市报·南方报业传媒集团 2019-05-29
  • “讲课带着泥土味,我们都爱听” 2019-05-14
  • 用当代中国马克思主义指导改革发展实践 2019-05-13
  • 人才济济是德尚"幸福的烦恼" 高卢雄鸡能否高奏凯歌 2019-05-12
  • 英国球迷要在世界杯上搞事情?俄罗斯笑脸相迎:你来啊 2019-05-12
  • 端午节,跟随习近平找寻中华民族“精气神” 2019-05-11
  • 首届中国企业海外投资沙龙举行 2019-05-11
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