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REDCATT 35FRX4 3.5″ Full-range woofer 4 ohms
€14.95
The REDCATT 35FRX4 is a compact 3.5″ full-range woofer with a ferrite motor, paper cone and 4 Ohm impedance, designed for strong low-frequency extension and wideband performance in small loudspeaker systems.
Available on backorder
Highlights of the REDCATT 35FRX4
- 3.5″ full-range woofer with ferrite magnet and paper cone
- 4 Ohm rated impedance with 25 W AES, 50 W continuous and 100 W peak power handling
- Excellent HF extension combined with extended LF performance
- Copper voice coil on an aluminum former for thermal stability
- Suitable for sealed designs, column speakers, 1-way, 2-way and passive radiator systems
Product details REDCATT 35FRX4
REDCATT 35FRX4 3.5″ Full-Range Woofer 4 Ohm
The REDCATT 35FRX4 is built as a compact full-range woofer for applications where size, performance and cost efficiency all matter. Its ferrite magnet system, steel basket and paper cone create a balanced driver platform with useful low-frequency reach and high-frequency extension for wideband reproduction.
With a resonant frequency of 67 Hz, 83.70 dB sensitivity and a Qts of 0.340, the 35FRX4 is well suited to small speaker systems. It can be used in sealed enclosures, compact column designs, 1-way speakers or 2-way portable products, and can also be paired with a passive radiator to extend low-frequency output further.
The motor and voice coil construction are designed for reliable power handling. A 25.4 mm copper voice coil is wound directly on an aluminum former using high-temperature wire, helping the driver handle 25 W AES, 50 W continuous and 100 W peak power while maintaining thermal stability during demanding use.
For compact DIY and OEM audio components projects, the 35FRX4 offers practical mounting dimensions with an 85 mm baffle cutout, 51 mm mounting depth and four mounting holes. Bass reflex alignments around 1 liter are possible, including tunings for higher mid-bass output, balanced general-purpose use or deeper low-frequency extension with suitable high-pass protection.
Specifications
| Article number | 35FRX4 |
| EAN | 9509371567736 |
| Woofer Type | Full-Range |
| Nominal Diameter | 3.5" | 90 mm |
| Power Handling (RMS) | 25 Watt |
| Power Handling (max) | 100 Watt |
| Continuous Program Power | 100 Watt |
| Impedance (Z) | 4 Ω |
| Sensitivity (SPL at 1m / 2.83V) | 83.70 dB |
| Voice Coil Diameter | 25.4 mm |
| DC Resistance (Re) | 3.5 Ω |
| Voice Coil Inductance (Le) | 0.14 mH |
| Resonant Frequency (Fs) | 67 Hz |
| Mechanical Q (Qms) | 4.35 |
| Electromagnetic Q (Qes) | 0.37 |
| Total Q (Qts) | 0.34 |
| Diaphragm Mass Inc. Airload (Mms) | 7.5 g |
| Mechanical Compliance of Suspension (Cms) | 7.5 mm/N |
| Surface Area of Cone (Sd) | 38.5 cm² |
| BL Product (BL) | 54.6 Tm |
| Compliance Equivalent Volume (Vas) | 1.6 L |
| Maximum Linear Excursion (Xmax) | 0.55 mm |
| Driver's Mechanical Losses (Rms) | 0.73 kg/s |
| Cone / Diaphragm Material | Paper |
| Surround Material | Rubber |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Aluminum |
| Basket / Frame Material | Steel |
| Magnet Material | Ferrite |
| Overall Outside Diameter | 93 mm |
| Overall Depth | 51 mm |
| Baffle Cutout Diameter | 85 mm |
| Bolt Circle Diameter | 101 mm |
| # Mounting Holes | 4 |
| Article number | 35FRX4 |
| EAN | 9509371567736 |
| Woofer Type | Full-Range |
|---|---|
| Nominal Diameter | 3.5″ | 90 mm |
| Power Handling (RMS) | 25 Watt |
| Power Handling (max) | 100 Watt |
| Continuous Program Power | 100 Watt |
| Impedance (Z) | 4 Ω |
| Sensitivity (SPL at 1m / 2.83V) | 83.70 dB |
| Voice Coil Diameter | 25.4 mm |
| DC Resistance (Re) | 3.5 Ω |
| Voice Coil Inductance (Le) | 0.14 mH |
| Resonant Frequency (Fs) | 67 Hz |
| Mechanical Q (Qms) | 4.35 |
| Electromagnetic Q (Qes) | 0.37 |
| Total Q (Qts) | 0.34 |
| Diaphragm Mass Inc. Airload (Mms) | 7.5 g |
| Mechanical Compliance of Suspension (Cms) | 7.5 mm/N |
| Surface Area of Cone (Sd) | 38.5 cm² |
| BL Product (BL) | 54.6 Tm |
| Compliance Equivalent Volume (Vas) | 1.6 l |
| Maximum Linear Excursion (Xmax) | 0.55 mm |
| Driver's Mechanical Losses (Rms) | 0.73 kg/s |
| Cone / Diaphragm Material | Paper |
| Surround Material | Rubber |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Aluminum |
| Basket / Frame Material | Steel |
| Magnet Material | Ferrite |
| Overall Outside Diameter | 93 mm |
| Overall Depth | 51 mm |
| Baffle Cutout Diameter | 85 mm |
| Bolt Circle Diameter | 101 mm |
| # Mounting Holes | 4 |
