Beyma 4FR40 4-inch Full Range Passive Ferrite Speaker, 40 Watt, 8 Ohm

5.0 / 5

1 review

Discontinued, this product can no longer be ordered.

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Beyma 4FR40 4-inch Full Range Passive Ferrite Speaker, 40 Watt, 8 Ohm
Product no: 9000-0102-8553 Bax Music Warranty: This product comes with a 3-year warranty.

General

The Beyma 4FR40 full-range speaker excels when it comes to both compact design and extensive response. This 4 inch speaker has an AES power rating of 40 Watts, boasts the high performance of a paper cone mounted in a pressed steel frame and features an 87 decibel sensitivity level and a 100Hz to 20,000Hz frequency response. All of these details combine to result in defined, low-distortion sound. The 4FR40 is the ideal candidate for completing a compact line array system or any setup in need of optimal audio reproduction.

Specifications

Product features

Sustainable product	not specified
Speaker size (inches)	4
Sensitivity	87 dB
Weight per speaker	< 1 kg
Installation depth	not specified
Maximum frequency	20 - 20.9 kHz
Minimum frequency	100 - 149 Hz
Nominal impedance	8 ohms
RMS capacity in watts	0 - 49 W
Type of magnet	ferrite

Weight and dimensions including packaging

Weight (incl. packaging)	585 gr
Dimensions (incl. packaging)	11,6 x 11,3 x 8,0 cm

Product specifications

technical specifications:
- woofer diameter: 4"
- nominal impedance: 8 Ohms
- minimum impedance: 7.3 Ohms
- AES power capacity: 40W
- program power: 80W
- sensitivity: 87dB, 1W/1m
- frequency range: 100 Hz - 20,000Hz
- voice coil diameter: 20.3mm, 0.8"
- BL factor: 4.2 N/A
- moving mass: 0.0044 kg
- wrap length: 7.7mm
- air vent height: 5mm
- diaphragm material: PM4
Thiele & Small:
- Fs: 92 Hz
- Re: 6.4 Ohms
- Qms: 11.3
- Qes: 0.96
- Qts: 0.88
- Vas: 2.8 L
- Cms: 668 µm / N
- Rms: 0.23 kg/s
- efficiency: 0.22%
- Sd: 0.0055m²
- Xmax: 3mm
- Vd: 11cm³
- Le at 1 kHz: 0.2 mH
construction:
- weight: 0.55 kg

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Wim July 14, 2025

Wrote the following about Beyma 4FR40 4-inch Full Range Passive Ferrite Speaker, 40 Watt, 8 Ohm

Ik gebruik deze als midrange speaker in een 3 weg philips box (FB821). Bij het doormeten bleek dat ik alleen de Plus en min aansluiting moest omdraaien. Mijn boxen zijn weer helemaal goed nu. Het was een gok maar ben er heel blij mee.