LF
Fullrange
4"
4FR
Code: 4FRX4-385
Full-Range/4inch/Ferrite/PP/30W/4ohm
Key Features
- 4FR Mid-woofer was designed with outdoor applications in mind. All speaker parts are coated to provide good protection against weather elements. The surround, cone and dust cap are produced with UV stabilizers. Our state of the art glue application and glue selection ensures the glue joints are waterproof. Magnet circuit is designed around sizable ferrite magnet. Consistent and wide Bl field add to the well balanced performance of this driver. Polypropylene cone and dustcap are lightweight solution and deliver the highest levels of performance. Large surround roll extends the peak to peak cone displacement and greatly improves the LF performance. The best application is in 2-way or multi-way speaker systems that can be designed for indoor or outdoor usage in Hi-Fi or professional products.
- EXTENDED LF FREQUENCY RESPONSE
- 2-way speaker systems
Quick Specs
Impedance
4 Ω
Program Power
60 W
Sensitivity
85.13 dB
Fs
80.00 Hz
Magnet
Ferrite
Voice Coil
25.4 mm
Design Notes
4FR Mid-woofer was designed with outdoor applications in mind. All speaker parts are coated to provide good protection against weather elements. The surround, cone and dust cap are produced with UV stabilizers. Our state of the art glue application and glue selection ensures the glue joints are waterproof.
Magnet circuit is designed around sizable ferrite magnet. Consistent and wide Bl field add to the well balanced performance of this driver.
Polypropylene cone and dustcap are lightweight solution and deliver the highest levels of performance. Large surround roll extends the peak to peak cone displacement and greatly improves the LF performance.
The best application is in 2-way or multi-way speaker systems that can be designed for indoor or outdoor usage in Hi-Fi or professional products.
Magnet circuit is designed around sizable ferrite magnet. Consistent and wide Bl field add to the well balanced performance of this driver.
Polypropylene cone and dustcap are lightweight solution and deliver the highest levels of performance. Large surround roll extends the peak to peak cone displacement and greatly improves the LF performance.
The best application is in 2-way or multi-way speaker systems that can be designed for indoor or outdoor usage in Hi-Fi or professional products.
Specifications
General Specs
Nominal Diameter
4"
Rated Impedance
4 Ohm
Magnet
Ferrite
Basket Material
Steel
Power Handling
AES Power
30 W
Continuous Power
60 W
Peak Power
120 W
Voice Coil
Diameter
25.4 mm
Winding Wire
Copper
Former
Aluminum
Winding Height
4.3 mm
T/S Parameters
Resonant Frequency (Fs)
80.00 Hz
Re
3.30 \u2126
Qes
0.580
Qms
4.24
Qts
0.510
Vas
1.96 liters
Sd
50.30 cm\u00B2
Mms
7.30 grams
Rms
0.86
Cms
0.5400
Bl
4.58 T\u00B7m
Le
0.290 mH
Sensitivity
85.13 dB
Design Details
Surround Material
NBR
Cone/Dome Material
PP
Spider
Nomex
T-Plate
5 mm
Xmax (peak)
0.35 mm
Xmech
4.65 mm
Overall Diameter
116.00 mm
Bolt Circle Diameter
109.00 mm
Baffle Cutout Dia.
94.50 mm
Mounting Holes
4
Depth (flange to rear)
55.90 mm
Net Weight
0.78 kg
Ordering Codes
Product Code
4FRX4-385
Downloads
Frequency Response & Impedance
2D Drawing
Enclosure Recommendations
Recommended enclosure alignments (sealed): - 1.1 liters (Qtc 0.85): compact, punchy character; system resonance approx. 133 Hz - 2.1 liters (Qtc 0.707): maximally flat Butterworth response (recommended); system resonance approx. 111 Hz - 5.1 liters (Qtc 0.6): extended response, smooth gradual rolloff; system resonance approx. 94 Hz
Frequently Asked Questions
- - 4FR Mid-woofer was designed with outdoor applications in mind. All speaker parts are coated to provide good protection against weather elements. The surround, cone and dust cap are produced with UV stabilizers. Our state of the art glue application and glue selection ensures the glue joints are waterproof. Magnet circuit is designed around sizable ferrite magnet. Consistent and wide Bl field add to the well balanced performance of this driver. Polypropylene cone and dustcap are lightweight solution and deliver the highest levels of performance. Large surround roll extends the peak to peak cone displacement and greatly improves the LF performance. The best application is in 2-way or multi-way speaker systems that can be designed for indoor or outdoor usage in Hi-Fi or professional products.
- - EXTENDED LF FREQUENCY RESPONSE
- - 2-way speaker systems
Recommended enclosure alignments (sealed): - 1.1 liters (Qtc 0.85): compact, punchy character; system resonance approx. 133 Hz - 2.1 liters (Qtc 0.707): maximally flat Butterworth response (recommended); system resonance approx. 111 Hz - 5.1 liters (Qtc 0.6): extended response, smooth gradual rolloff; system resonance approx. 94 Hz
Outdoor / weather-resistant; pa column midrange, small two-way monitors
AES Power: 30 W,
Continuous: 60 W,
Peak: 120 W.
Sensitivity: 85.13 dB (1W/1m).
