Jensen Loudspeakers 12'' Silverbird 12 70 Watt Speaker - 8 Ohm

The Silverbird speakers are designed to provide an eminently versatile array of tones, retaining the distinct vintage character of their Reinforced AlNiCo ancestors, the Blackbird 40 speakers, but in a more affordable platform. Specific attention was paid to the top-end response, carefully tailored to make the Silverbird speakers well-suited to overdrive and high-gain applications. Additionally, they feature a more contemporary frequency curve on their respective treble ranges.

The Silverbird line utilizes a new 1 1/2" (38mm) aluminum-wound voice coil with a Kapton former, designed to retain the trademark clarity of the Jensen clean tones, paired with a smooth, progressive contour of the top-end response; this response is tailored to grant openness with clean and pushed tones, and the necessary smoothness to keep the upper harmonics of the high-gain tones under control. The medium-sized Ceramic magnets provide the necessary strength for generous-yet-tight bass, while the new cone membranes, with a specific treatment on the paper surrounds, deliver a balanced response in the midrange and "presence" zone.

The Silverbird 12 has a fatter and fuller sound. Versatile enough to deliver an open, airy response in open-back cabinets, the Silverbird 12 can morph into powerful rock'n roll tone machines in closed-back enclosures.

Specifications

General Characteristics
- Nominal Overall Diameter: 307 mm (12 in)
- Nominal Voice Coil Diameter: 38 mm (1.5 in)
- Magnet Weight: 810 g (29 oz)
- Overall Weight: 3.3 kg (7.28 lbs)
- Flux Density: 1.3 T
- Voice Coil Winding Depth: 10 mm (0.39 in)
- Magnetic Gap Depth: 6 mm (0.24 in)

Thiele-Small Parameters
- Nominal Impedance: 8Ω
- Voice Coil DC Resistance, RE: 6 Ω
- Resonance Frequency, S: 87 Hz
- Mechanical Q Factor, QMS: 11.79
- Electrical Q Factor, QES: 1.33
- Total Q Factor, QTS: 1.03
- Mechanical Moving Mass, MMS: 28.4 g
- Mechanical Compliance, CMS: 118 um/N
- Force Factor, BxL: 9.09 Wb/m
- Equivalent Acoustic Volume, VAS: 40.3 lt.
- Diaphragm Area, SD: 490.9 cm2
- Voice Coil Inductance @ 1kHz, LE: 0.57 mH

Constructive Characteristics
- Magnet: Ferrite
- Voice Coil Winding: Aluminum
- Voice Coil Former: Kapton
- Cone Material: Paper
- Surround Material: Integrated Paper
- Dust Dome Material: Non-treated Cloth
- Basket Material: Pressed Sheet Steel
- Surround Treatment: Yes

Electrical Characteristics
- Nominal Impedance: 8Ω
- Rated Power: 70 W
- Musical Power: 140 W
- Sensitivity@1W,1m: 97 dB