BMS BMS12N804L 12 N 804 – 12″Neodym Ultra Low Woofer 1100 W 8 Ohm

12" Neodymium Ultra Low Distortion Woofer

Features

• 98 dB Sensitivity 1 W / 1 m
• 1100 W Power Handling
• 4" Sandwich Voice Coil for low Power Compression
• Double treated Cone for Water Protection
• Neodymium Magnet
• Triple Aluminum demodulating Rings for ultra low Distortion
• Optimal for compact Subwoofers

Specification
Nominal Diameter 320 (12) mm (in)
Nominal Impedance (1) 8 Ohm
Minimum Impedence 7.5 Ohm
Nominal Power Handling (2) 450 W
Continuous Power Handling (3) 900 W
Sensitivity (1W/1m) (4) 95 dB
Frequency Range 40 - 1000 Hz
Voice Coil Diameter 76 (3) mm (in)
Winding Material Copper
Former Material Glass Fibre
Winding Depth 22 (0.9) mm (in)
Magnetic Gap Depth 10.5 (0.4) mm (in)
Flux Density 1.15 T

Thiele & Small Parameters
Fs 42 Hz
Re 6.1 Ohm
Qes 0.22
Qms 3.8
Qts 0.2
Vas 75 (2.6) dm3 (ft3)
Sd 522 (80.9) cm2 (in2)
Eta Zero 2.4 %
Xmax +/- 7 mm
Xvar +/- 9 mm
Mms 74 g
Bl 23.5 Txm
Le 2 mH

Mounting and Shipping Info
Overall Diameter 316 mm (12.4 in)
Bolt Circle Diameter 296 mm (11.6 in)
Baffle Cutout Diameter 282 mm (11.1 in)
Depth 140 mm (5.5 in)
Flange and Gasket Thickness 16 mm (5/8 in)
Net Weight 7.6 kg (16.7 lb)
Shipping Weight 8.4 kg (18.5 lb)
Shipping Box 340x340x170 mm
(13.4x13.4x6.7 in)
1For different impedances, please ask.
22 hours test made with continuous pink noise signal (6 dB crest factor).
Power calculated on rated minimum impedance.
3Power on Continuous Program is defined as 3 dB greater than the
Nominal rating.
4Applied RMS Voltage is set to 2.83V for 8 ohms Nominal Impedance.

• Nominal Basket Diameter 12“, 304.8 mm
• Nominal Impedance 8 ohms
• Power Rating Watts 400 W / Music Program 800 W
• Resonance 55 Hz
• Usable Frequency Range 54 Hz - 5 kHz
• Sensitivity 98.3
• Magnet Weight 56 oz.
• Gap Height 0.375“, 9.53 mm
• Voice Coil Diameter 2.5“, 63.5 mm

• Resonant Frequency (fs) 55 Hz
• DC Resistance (Re) 6.3
• Coil Inductance (Le) 0.74 mH
• Mechanical Q (Qms) 5.27
• Electromagnetic Q (Qes) 0.46
• Total Q (Qts) 0.43
• Compliance Equivalent Volume 81.3 liters (Vas) 81.3 liters / 2.9 cu. ft.
• Peak Diaphragm Displacement Volume 125 cc
• Mechanical Compliance of Suspension 0.21 mm/N
• BL Product (BL) 13.5 T-M
• Diaphragm Mass inc. Airload (Mms) 39 grams
• Efficiency Bandwidth Product (EBP) 120
• Maximum Linear Excursion (Xmax) 2.4 mm
• Surface Area of Cone (Sd) 519.5 cm²
• Maximum Mechanical Limit (Xlim) 9.9 mm

• Recommended Enclosure Volume Sealed N/A Vented 25.5-85 liters/0.9-3 cu.ft.
• Overall Diameter 12.03“, 305.5 mm
• Baffle Hole Diameter 10.95“, 278.1 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.25“, 6.4 mm
• Mounting Holes B.C.D. 11.59“, 294.3 mm
• Depth 5.35“, 136 mm

• Aluminum voice coil
• Polyimide former
• Ferrite magnet
• Vented core
• Pressed steel basket
• Paper Cone
• Cloth cone edge
• Solid composition felt dust cap

Originally created as a higher-power handling variant of the G12M Greenback, the G12-65 is widely regarded as one of the best speakers ever produced for use in a 4x12 cabinet.

With its fast attack and tightly controlled low-end, the G12-65 became a firm favourite in the ʼ80s with hard rock players. The precisely tuned midrange and crisp defined top-end contribute to an aggressive crunch sound that punches through the mix while the mid-range warmth and detail give weight and depth to single notes.