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BEYMA 8P300Fe/N

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BEYMA 8P300Fe/N — 8" / 8 inch · Woofer · Bass · Ferrite Magnet
300 W AES - 94 dB - 60 – 7000 Hz - 8 Ω
Part no.: 42A-CHS-TT-BEY-0037

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BEYMA 8P300Fe/N — 8" · Woofer · Ferrite-Magnet

300 W AES · 94 dB Sensitivity · Frequency range 60 Hz – 7000 Hz

Technical data

  • Diameter: 8 "
  • Voice coil: 2.5 "
  • Power handling: 300 W AES
  • Sensitivity: 94 dB
  • Impedance: 8 Ω
  • Magnet: Ferrite
  • Weight: 4 kg
  • Mounting depth: 102 mm
  • Frequency range: 60 – 7000 Hz

Series: P · Part no.: 42A-CHS-TT-BEY-0037

Beyma 8P300Fe/N: 8" mid-woofer with 94 dB, 300 W AES and a 2.5" voice coil

The Beyma 8P300Fe/N is an 8" mid-woofer from the P series with a ferrite magnet, 2.5" voice coil and 300 W AES. It covers 60 Hz to 7000 Hz, making it a typical candidate for compact 2-way tops with a compression driver, for stage monitors and for the midrange section in 3-way systems with a 12" or 15" bass. 94 dB sensitivity at 8 Ω ensures it level-matches horn systems.

The parameters: Fs 53 Hz, Qts 0.31, Qes 0.33, Vas 24.8 l, BL 13.5 Tm on 52 g of moving mass. That is a balanced set which, with an EBP of 161, points toward vented enclosures. Xmax 6 mm gives 132 cm³ of displacement, enough for the lower midband in a top but no subwoofer excursion. At 102 mm mounting depth and 4 kg the 8P300Fe/N stays cabinet-friendly.

Use and enclosure

For a vented box the guideline is 13 l with fb 64 Hz and f3 around 71 Hz. That yields a compact 2-way top which works cleanly with subwoofer support and, even without one, delivers enough lower midband for speech and monitoring. As a midrange in a 3-way box the driver belongs in a sealed midrange chamber; the guideline is 5.9 l with fc around 121 Hz, with the lower crossover then set well above 60 Hz. At the top you cross over below 7000 Hz, in practice where the 8" cone begins to beam and a compression driver on a horn takes over. Beyma horns and waveguides are listed in their own category at 42.audio.

The inductance of 1.2 mH is normal for an 8" driver with a 2.5" coil and can be accounted for in a passive crossover. With Re 6.1 Ω and 300 W AES a mid-power amplifier is the right match; a high-pass protects the 6 mm Xmax when the top runs without a subwoofer crossover. The enclosure calculator at 42.audio handles the exact cabinet design.

What to look out for

  • 2.5" voice coil with 300 W AES: decent thermal reserve for continuous use.
  • Xmax 6 mm: high-pass well above 60 Hz when no subwoofer is in the chain.
  • Mounting depth 102 mm, 4 kg: fits compact tops and monitors.
  • Le 1.2 mH: account for it in the crossover design when going passive.
  • Re 6.1 Ω at 8 Ω nominal: two drivers in parallel present a 4 Ω load.

Frequently asked questions

How does the 8P300Fe/N differ from the B&C 8MBX51?

The 8MBX51 has a slightly higher resonance at similar total Q, with Fs 60 Hz, Qts 0.29 and Vas 23 l. The 8P300Fe/N starts marginally lower with Fs 53 Hz and Vas 24.8 l, which makes it a little better suited to tops that have to work without a subwoofer.

Which enclosure for a compact 2-way top?

Vented around 13 l with fb 64 Hz as a guideline, f3 then around 71 Hz. Add a 1" compression driver on a horn, crossing over below 7000 Hz where horn and 8" cone radiate similarly. Check the tuning in the enclosure calculator.

Is the 8P300Fe/N enough as a midrange in a 3-way system?

Yes, with 94 dB and 300 W AES it is robust enough for midrange duty next to a 15" bass. Sealed midrange chamber around 5.9 l as a guideline, lower crossover well above 60 Hz, and the 6 mm excursion stays far below its limit.

Beyma 8P300Fe/N: manufacturer, spellings and classification

Beyma and Acustica Beyma refer to the same manufacturer: Acústica Beyma S.L. of Moncada near Valencia, Spain. The 8P300Fe/N is a 8-inch woofer with ferrite magnet from the P 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 8P300Fe/N with all key data in the driver database and the enclosure calculator. More drivers from this manufacturer: Atlas Beyma.

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs53 Hz
Total Q Qts0.31
Electrical Q Qes0.33
Mechanical Q Qms6.5
Equivalent volume Vas24.8 l
Moving mass Mms52.0 g
Cone area Sd220 cm²
Linear excursion Xmax6 mm
Displaced volume Vd132 cm³
Force factor BL13.5 Tm
DC resistance Re6.1 Ω
Voice coil inductance Le1.2 mH

Enclosure suggestion

The EBP of 161 suggests a bass-reflex enclosure. EBP = fs / Qes = 53 / 0.33

Sealed (Qtc 0.707)

Enclosure volume Vb
5.9 l
System resonance Fc
121 Hz
Cut-off frequency F3
121 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
10.4 l
Tuning frequency Fb
69 Hz
Cut-off frequency F3
78 Hz

Vb is the required net internal volume, Fb the tuning frequency of the reflex port and F3 the frequency at which the level has dropped by 3 dB. Calculated approximation after Small. A starting point for simulation, not a finished build plan.

Comparable drivers

Same size, same type, Qts within ±30 %.

Specifications

Allgemein
Manufacturer BEYMA
Category Low Frequency
Series P
Magnet Ferrite
Impedance (Ω) 8
Power handling (W) 300
Sensitivity (dB) 94
Frequency from (Hz) 60
Frequency to (Hz) 7000
Abmessungen & Korb
Diameter 8
Voice coil (inch) 2.5
Mounting depth (mm) 102
Weight (kg) 4
Thiele-Small-Parameter
Re (Ω) 6.1
Le (mH) 1.2
Fs (Hz) 53
Qms 6.5
Qes 0.33
Qts 0.31
Vas (l) 24.8
Xmax (mm) 6
Vd (cm³) 132
BL (Tm) 13.5
Mms (kg) 0.052
Sd (m²) 0.022