Specification | Value | Unit | |
Overall diameter | 82X82 | mm | |
Cutout Diameter/Square | 64X64 | mm | |
Min. frontplate thickness | 5 | mm | |
Overall depth | 57 | mm | |
Motor assembly depth | -- | mm | |
Motor assembly diameter | -- | mm | |
Screwfitting | DIN 7984, Ø 4,50 | mm | |
Terminal | +: 4.8 x 0.8 / -: 2.8 x 0.8 | mm | |
Shipping weight (pair) | 1.00 | Kg | |
Shipping box size (pair) | 130/130/90 | mm | |
BD 25-6-034 Cell 25 mm Diamond Tweeter
The BD25–6–034 is a 1 inch tweeter with ultra hard diamond dome in a 82 mm frontplate. The unsurpassed rigidity of the diamond dome leads to most accurate conversion from electrical energy to sound pressure. As the dome breakup frequency is around 50 kHz, no damping cutouts are required. An FEA optimized underhung motor design with vented aluminium voice coil former and neodymium magnet guarantees low energy storage and good heat transfer. The soft fabric surround and ferrofluid with high viscosity center the moving parts with excellent linearity. We recommend our BD25-6-034 in an application above 2500 Hz.
Our diamond speakers are only sold to loudspeaker producers.
Dome material | Diamond |
Application | Tweeter |
Overall diameter | 82X82 MM |
Cutout Diameter/Square | 64X64 MM |
Overall depth | 57 MM |
Motor assembly depth | -- |
Motor assembly diameter | -- |
Main Features
underhung motor design
soft fabric surround
vented vc & pole piece
ferrofluid filling
2500 HZ - 50000 HZ
Mechanical Data
Thiele/Small Parameter
Specification | Value | Unit | |
Sensitivity (2.83V / 1m) | Spl | 91 | dB |
DC-resistance | Re | 5.8 | Ohm |
Resonance frequency | Fs | 1052 | Hz |
Equivalent volume of air | Vas | - | ltr |
Mechanical Q | Qms | 2.26 | |
Electrical Q | Qes | 1.99 | |
Total Q | Qts | 1.06 | |
Effective piston area | Sd | 5.94 | Cm2 |
Moving mass | Mms | 0.25 | g |
Suspension compliance | CMs | 0.069 | mm/n |
Mechanical resistance | Rms | 0.84 | Kg*s |
Voice Coil Parameters
Specification | Value | Unit | |
Power handling | p | 120 | W |
Linear excursion | Xmax | +/-0.1 | mm |
Voice coil diameter | 16.4 | mm | |
Voice coil former material | Al | ||
Voice coil material | Cu | ||
Voice coil inductance | Le | 0.03 | mH |
Force factor | Bl | 2.61 | N/A |
Motor type | underhung | ||
Ferrofluid filling | Yes | ||