LF
Sub-woofer
12"
12XR
Code: 12XRX8-270
XR Sub-Woofer/12inch/Neo/Paper/500W/8ohm
Key Features
- Very high cone excursion, with very low THD
- Capable to handle very low frequencies
- High power handling, copper cap, stitched tinsel wires
Quick Specs
Impedance
8 Ω
Program Power
1000 W
Sensitivity
90.95 dB
Fs
35.00 Hz
Magnet
Neodymium
Voice Coil
63.5 mm
Design Notes
The 12XR was designed around our new approach to the magnetic system. Our XR series speaker motors were designed so the voice coil winding doesn’t leave the gap for most of the cone excursion. The desired cone excursion is carefully evaluated and incorporated into the design. The 12XR allows the designer to design sub-woofers with very large cone excursions, without the otherwise present harmonic distortion due to the voice coil leaving the magnetic gap. If you like the sound of a clean, undistorted bass, then the 12XR is the right transducer for your application.
Motor Design
The magnetic design incorporates large neodymium magnets placed along the voice coil winding. This has allowed us to push the cone excursion to 28mm peak to peak. Unique gap venting ensures good air circulation and greatly improves the reliability of this driver. We have also developed a new technique for manufacturing deep copper caps.
The design further sports a large spider on top of which is hot-pressed tinsel wires. Cone is carbon fiber reinforced, with a lightweight foamed rubber surround. The suspension was designed for large excursions.
Motor Design
The magnetic design incorporates large neodymium magnets placed along the voice coil winding. This has allowed us to push the cone excursion to 28mm peak to peak. Unique gap venting ensures good air circulation and greatly improves the reliability of this driver. We have also developed a new technique for manufacturing deep copper caps.
The design further sports a large spider on top of which is hot-pressed tinsel wires. Cone is carbon fiber reinforced, with a lightweight foamed rubber surround. The suspension was designed for large excursions.
Specifications
General Specs
Nominal Diameter
12"
Rated Impedance
8 Ohm
Magnet
Neodymium
Basket Material
Aluminum
Power Handling
AES Power
500 W
Continuous Power
1000 W
Peak Power
2000 W
Voice Coil
Diameter
63.5 mm
Winding Wire
Copper
Former
Glass Fiber
Winding Height
12.6 mm
T/S Parameters
Resonant Frequency (Fs)
35.00 Hz
Re
5.70 \u2126
Qes
0.730
Qms
10.50
Qts
0.680
Vas
89.70 liters
Sd
531.00 cm\u00B2
Mms
88.30 grams
Rms
1.85
Cms
0.2300
Bl
12.30 T\u00B7m
Le
0.240 mH
Sensitivity
90.95 dB
Design Details
Surround Material
NBR
Cone/Dome Material
Paper CF
Spider
Nomex
T-Plate
31 mm
Xmax (peak)
9.2 mm
Xmech
32.7 mm
Overall Diameter
320.00 mm
Bolt Circle Diameter
299.00 mm
Baffle Cutout Dia.
281.00 mm
Mounting Holes
8
Depth (flange to rear)
172.50 mm
Net Weight
5.70 kg
Ordering Codes
Product Code
12XRX8-270
Downloads
Frequency Response & Impedance
2D Drawing
Enclosure Recommendations
Recommended enclosure alignments (bass reflex): - 30 liters tuned to 40 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 37 Hz, HP filter 32 Hz - 35 liters tuned to 37 Hz: balanced response, general-purpose (recommended); -3 dB approx. 34 Hz, HP filter 27 Hz - 40 liters tuned to 33 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 28 Hz, HP filter 21 Hz
Frequently Asked Questions
- - Very high cone excursion, with very low THD
- - Capable to handle very low frequencies
- - High power handling, copper cap, stitched tinsel wires
Recommended enclosure alignments (bass reflex): - 30 liters tuned to 40 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 37 Hz, HP filter 32 Hz - 35 liters tuned to 37 Hz: balanced response, general-purpose (recommended); -3 dB approx. 34 Hz, HP filter 27 Hz - 40 liters tuned to 33 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 28 Hz, HP filter 21 Hz
Vented pa bass cabinet or subwoofer; weight-critical installs
AES Power: 500 W,
Continuous: 1000 W,
Peak: 2000 W.
Sensitivity: 90.95 dB (1W/1m).
