Fountek FR135EX 5″ Neodymium Full Range Speaker Driver 8Ohm
Overview:
Fountek’s FR135EX 5″ full range driver features an attractive, high-strength aluminum cone, robust cast-aluminum frame, and an optimized long-excursion neodymium motor, for low distortion and excellent detail.
Highlights:
- Black anodized aluminum cone with phase plug
- 40 watts RMS power handling
- Neo-powered, high-excursion, underhung motor design
- Smooth, extended frequency response
- Cast aluminum frame
Product Description:
Fountek has applied much of what it has learned from designing industry-leading ribbon transducers in creating its line of full-range drivers. These high-performing cone drivers feature optimized aluminum diaphragms that shed resonance rapidly, for exceptional detail and smooth frequency response.The 5″ FR135EX model features a high-strength neodymium motor structure for low distortion, extended excursion, and excellent transient response. It’s perfect as a full-range driver or a midrange in multi-way speaker designs.
Product Specifications:
| Nominal Diameter | 5″ |
| Power Handling (RMS) | 40 Watts |
| Power Handling (max) | 80 Watts |
| Impedance | 8 ohms |
| Frequency Response | 50 to 26,000 Hz |
| Sensitivity | 85.1 dB 1W/1m |
| Voice Coil Diameter | 1.26″ |
Thiele-Small Parameters:
| Resonant Frequency (Fs) | 61.5 Hz |
| DC Resistance (Re) | 6 ohms |
| Mechanical Q (Qms) | 1.71 |
| Electromagnetic Q (Qes) | 0.69 |
| Total Q (Qts) | 0.49 |
| Compliance Equivalent Volume (Vas) | 0.22 ft.³ |
| Mechanical Compliance of Suspension (Cms) | 0.89 mm/N |
| BL Product (BL) | 5.03 Tm |
| Diaphragm Mass Inc. Airload (Mms) | 7.55g |
| Moving Mass Of Diaphragm (Mmd) | 7.21 |
| Maximum Linear Excursion (Xmax) | 5 mm |
| Surface Area of Cone (Sd) | 70.5 cm² |
Materials of Construction:
| Cone Material | Aluminum |
| Surround Material | Foam |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Aluminum |
| Basket / Frame Material | Cast Aluminum |
| Magnet Material | Neodymium |
Mounting Information:
| Overall Outside Diameter | 5.73″ |
| Baffle Cutout Diameter | 4.53″ |
| Depth | 2.71″ |
| Bolt Circle Diameter | 5.35″ |
| # Mounting Holes | 4 |
















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