The JBL K2 S 9900 (39800 euros the pair) shoots the bird – without big batting, she reached Galactic 124 dB.
- Column speaker JBL K2 S 9900
- Data sheet
Far more honest than the Tannoy factory, you are the JBL, which is also marketed as 8 ohm Cabinet. Their minimums in the bass be good-natured 7.1 ohms. The curve below 5 ohm drops only 20 kilohertz, where hardly any rivers flow.
What about the practice? If the amplifier with 4-ohm load comes clear, sounds the Tannoy when connecting to a track louder. Mathematically, the JBL is lightweight, because at the same voltage, only the half current flows into 8 Ohms.
Almost equal in the deep bass response: covered with 33 (Tannoy) and 34 Hertz (JBL) on-3 decibels both require no subwoofer.
Beyond good and evil are the SPL reserves. Already, the Tannoy reached up to 115 dB at 1 meter distance without distorting the signal over charge.
The JBL shoots the bird but, who achieved Galactic 124 dB without big bat an eyelid. The discussion whether SPL reserves are necessary at this level, whether time outside before left. Actually, the K2 S is the loudest box that ever heard stereoplay 9900.
JBL breaks all records
During the test, the Rolling Stones in the player rotated or Bach’s St Matthew passion, was almost beside the point, because the dynamic limits of both models were even on the loudest places in the distance. But if the tester’s RIP times correctly, the JBL remained clearly approved.
On the other hand even die-hard retrieve hardly permanently such level, that are only possible as long as the power play. Who actually wants to explore the limits of the two cars, must provide services close to 1000 watts.
Overall, extremely little distorted the JBL and achieved percentage distortion factors at the level of electronic components. The values are slightly higher only in the deep bass, which is the case with boxes commonly.
Despite parallels with regard to dynamics and JBL and Tannoy use very different approaches Watts needed for their chassis. The JBL is a classic three way box with HiFi Atypically high transition frequencies.
The 15-inch bass driver works up to 900 Hertz and is well prepared for this purpose with a comparatively light paper cone. A ludicrously linear high-performance magnet Alnico assumes the drive.
A compression driver with a 10-centimeter membrane made of high-strength magnesium denies the upper part of the MIDs and the highs. Before that, a horn is mounted, which mouth extends across the entire width of the box.
Very much smaller was the Superhochtoner arranged about who comes first at 15 kHz in the game. He uses a ultra light beryllium diaphragm, who is also a pressure Chamber before.
The two horns produce a gigantic high efficiency significantly exceeding the non sound-guided bass driver. The pressure Chamber systems must be tamed by voltage dividers, otherwise bass compared to the other shares of the sound would be too low. For the Horn driver, this is not a disadvantage, because they work thus always in the ultra-distortion poor part-load range.
JBL K2 S 9900
Technical data and test results
|Installation tip:||free-standing, \r\NHo raft 3.5 meters, normal damped rooms from 35 m²|
|Operating voltage for 90 dB SPL||2.5 V|
|Impedance minimum stp||4.7 ohm|
|Maximum volume upper value||124 dB|
|Maximum volume lower value (> 45 Hz)||124 dB|
|Lower cut-off frequency (-3dB)||34 Hz|
|Lower cut-off frequency (-6 dB)||26 Hz|
|Short conclusion||Large-capacity stainless Standbox\r\nmit pressure Chamber drivers für\r\nMitten and height. Hochtöner\r\nmit beryllium diaphragm, Bass\r\nmit Alnico magnet. The JBL tönt\r\nmonitorhaft neutral and clear, \r\nselbst at levels beyond von\r\nGut and evil.|
|Sound||Absolute top class|
|Sound points (70 points)||64|
|Overall rating (max. 120 points)||very good 87|
|Price / performance||well|
|tested in output||1 / 11|