BD 90-6-727
Diamond Dome Midrange
| Dome material | Diamond |
| Application | MIDRANGE |
| Overall diameter | 124 MM |
| Cutout Diameter | 124.4 MM |
| Overall depth | 56 MM |
| Motor assembly depth | -- |
| Motor assembly diameter | -- |
Main Features
full featured cell concept
90 mm diamond dome, 20 carat
ideal acoustical center
no reflections at the back
Underhung motor design
200 HZ - 10000 HZ
Technology
3D Model
Booklet
Print
Back to Overview
The BD90-6-727 is a 5 inch midrange driver with diamond dome.
Similiar to our C90-6-724, the new design facilitates an ideal acoustical center identical to our CELL tweeters and bass drivers. The innovative construction provides ideal conditions for layouting the spider and magnetic system, and in combination with the unique 20 carat diamond dome, it ensures the lowest distortion rates that we have ever achieved.
The magnetic system which delivers 1.8 Tesla does not cover the rear of the dome, eliminating reflections and energy storage. The proprietary CELL-clamping technology enables easy assembly and adjustment for various front panel designs.
Your individual logo can be applied to the milled basket upon request.
We recommend our BD90-6-727 for an application from 200 Hz – 10000 Hz.
Our diamond speakers are only sold to loudspeaker producers
Mechanical Data
| Specification | Value | Unit | |
| Overall diameter | 124 | mm | |
| Cutout diameter | 124.4 | mm | |
| Min. frontplate thickness | 8 | mm | |
| Overall depth | 53 | mm | |
| Motor assembly depth | -- | mm | |
| Motor assembly diameter | -- | mm | |
| Screwfitting | -- | mm | |
| Terminal | +: 6.3 x 0.8 / -: 4.8 x 0.8 | mm | |
| Shipping weight (pair) | 6.0 | Kg | |
| Shipping box size (pair) | 350/160/110 | mm | |
Thiele Small Parameters
| Specification | Value | Unit | |
| Sensitivity (2.83V / 1m) | Spl | 92 | dB |
| DC-resistance | Re | 5.5 | Ohm |
| Resonance frequency | Fs | 123 | Hz |
| Equivalent volume of air | Vas | 1.6 | ltr |
| Mechanical Q | Qms | 4.5 | |
| Electrical Q | Qes | 0.30 | |
| Total Q | Qts | 0.28 | |
| Effective piston area | Sd | 73.3 | Cm2 |
| Moving mass | Mms | 8.0 | g |
| Suspension compliance | CMs | 0.21 | mm/n |
| Mechanical resistance | Rms | 1.37 | Kg*s |
voice coil parameters
| Specification | Value | Unit | |
| Power handling | p | 100 | W |
| Linear excursion | Xmax | +/-3.0 | mm |
| Voice coil diameter | 80 | mm | |
| Voice coil former material | Ti | ||
| Voice coil material | Cu | ||
| Voice coil inductance | Le | 0.13 | mH |
| Force factor | Bl | 10.7 | N/A |
| Motor type | underhung | ||
| Ferrofluid filling | No | ||
Frequency Response [db]
Impedance [OHM]
Distortion [%]
