BEYMA 15MC700Nd
BEYMA 15MC700Nd — 15" / 15 inch · Midrange Driver · Midrange · Neodymium Magnet
700 W AES - 100 dB - 50 – 4000 Hz - 8 Ω
Part no.: 42A-CHS-MT-BEY-0001
Documents
BEYMA 15MC700Nd — 15" · Midrange Driver · Neodymium-Magnet
700 W AES · 100 dB Sensitivity · Frequency range 50 Hz – 4000 Hz
Technical data
- Diameter: 15 "
- Voice coil: 3 "
- Power handling: 700 W AES
- Sensitivity: 100 dB
- Impedance: 8 Ω
- Magnet: Neodymium
- Weight: 4.2 kg
- Mounting depth: 179 mm
- Frequency range: 50 – 4000 Hz
Series: MC · Part no.: 42A-CHS-MT-BEY-0001
Beyma 15MC700Nd: 15" neodymium midrange with 100 dB and 700 W AES
100 dB sensitivity at 8 Ω: for a 15" midrange of the MC range the Beyma 15MC700Nd combines very high efficiency with 700 W AES power handling. The neodymium magnet keeps the weight at 4.2 kg, and the 3" voice coil provides the heat dissipation this power class requires. The working range spans 50 to 4,000 Hz.
The parameters tell the story of a driver built for control: Fs 49 Hz, Qes 0.38, Qts 0.31 and an EBP of 129. The motor with a BL of 17.5 Tm moves 98 g of cone mass on 880 cm² of area, and the 6.5 mm Xmax gives a Vd of 572 cm³. The high Qms of 8.6 indicates low mechanical losses in surround and spider.
Use and enclosure
An EBP of 129 says it plainly: bass-reflex or horn if you need output below 100 Hz. The guide value is compact: about 55 l tuned to 59 Hz, with an f3 around 66 Hz. For the classic midrange section between subwoofer and horn a sealed midrange chamber of about 25 l with fc at 112 Hz is suitable. Set the low crossover well above 50 Hz; the enclosure calculator at 42.audio helps with the design.
Towards the top the 15MC700Nd plays up to 4,000 Hz and hands over to a compression driver there. At 100 dB it is on a par with horn systems in terms of level, so little attenuation is needed in the crossover. Allow for the mounting depth of 179 mm when building the cabinet.
What to look out for
- 8 Ω, Re 5.4 Ω, Le 1 mH: standard load, low inductance.
- Neodymium magnet, 4.2 kg: light for a 15" driver rated 700 W AES.
- 100 dB sensitivity: matches horn tweeters without much level padding.
- Mounting depth 179 mm, Xmax 6.5 mm, Vd 572 cm³.
- Qts 0.31, EBP 129: bass-reflex guide value 55 l, sealed 25 l.
Frequently asked questions
What does the neodymium magnet on the 15MC700Nd offer over ferrite?
Neodymium achieves the same magnetic strength at far lower mass. That is why the 15MC700Nd weighs only 4.2 kg although the motor with BL 17.5 Tm and a 3" voice coil is designed for 700 W AES; for touring boxes and flown systems this is a decisive advantage.
Where do I cross the 15MC700Nd to the bass and to the tweeter?
Downwards well above the lower limit of 50 Hz, in a sealed 25 l chamber practically around the fc of 112 Hz or higher. Upwards 4,000 Hz is the limit, where a compression driver on a horn takes over at the latest.
Which amplifier fits?
At 100 dB a few watts are enough for room level. For PA use up to 700 W AES the amplifier should supply corresponding power into 8 Ω and be protected by a limiter.
Beyma 15MC700Nd: manufacturer, spellings and classification
Beyma and Acustica Beyma refer to the same manufacturer: Acústica Beyma S.L. of Moncada near Valencia, Spain. The 15MC700Nd is a 15-inch midrange driver with neodymium magnet from the MC series, available from 42.audio, Beyma dealer in Germany, with datasheet and full specifications in the driver database.
At 42.audio you get the BEYMA 15MC700Nd with all key data in the driver database and the enclosure calculator. More drivers from this manufacturer: Atlas Beyma.
Thiele-Small parameters
| Nominal impedance | 8 Ω |
|---|---|
| Resonance frequency fs | 49 Hz |
| Total Q Qts | 0.31 |
| Electrical Q Qes | 0.38 |
| Mechanical Q Qms | 8.6 |
| Equivalent volume Vas | 105.0 l |
| Moving mass Mms | 98.0 g |
| Cone area Sd | 880 cm² |
| Linear excursion Xmax | 6.5 mm |
| Displaced volume Vd | 572 cm³ |
| Force factor BL | 17.5 Tm |
| DC resistance Re | 5.4 Ω |
| Voice coil inductance Le | 1 mH |
Specifications
| Allgemein | |
|---|---|
| Manufacturer | BEYMA |
| Category | Mid Frequency |
| Series | MC |
| Magnet | Neodymium |
| Impedance (Ω) | 8 |
| Power handling (W) | 700 |
| Sensitivity (dB) | 100 |
| Frequency from (Hz) | 50 |
| Frequency to (Hz) | 4000 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 15 |
| Voice coil (inch) | 3 |
| Mounting depth (mm) | 179 |
| Weight (kg) | 4.2 |
| Thiele-Small-Parameter | |
|---|---|
| Re (Ω) | 5.4 |
| Le (mH) | 1 |
| Fs (Hz) | 49 |
| Qms | 8.6 |
| Qes | 0.38 |
| Qts | 0.31 |
| Vas (l) | 105 |
| Xmax (mm) | 6.5 |
| Vd (cm³) | 572 |
| BL (Tm) | 17.5 |
| Mms (kg) | 0.098 |
| Sd (m²) | 0.088 |