DELTA-12LFA American Standard Series Recommended for professional audio mid-bass or floor monitor applications in a sealed enclosure. Also suitable Mas a woofer in vented, bass guitar or PA enclosures. SPECIFICATION Nominal Basket Diameter 12“, 304.8 mm Nominal Impedance 8 ohms Power Rating Watts 500 W / Music Program 1000 W Resonance 51 Hz Usable Frequency […]
Recommended for professional audio mid-bass or floor monitor applications in a sealed enclosure. Also suitable
Mas a woofer in vented, bass guitar or PA enclosures.
DELTA-12LFA American Standard Series
Recommended for professional audio mid-bass or floor monitor applications in a sealed enclosure. Also suitable
Mas a woofer in vented, bass guitar or PA enclosures.
SPECIFICATION
12” neodymium woofer offers 300Wrms (AES) continuous power handling and 98dB sensitivity
3” high temperature Inside/Outside voice coil efficiently dissipates heat, preventing sensitivity loss through thermal compression
M-roll surround provides progressive excursion control, yielding a smooth response even at extremes of frequency range
Extremely lightweight design combined with a highly efficient magnet assembly results in exceptional power-to-weight ratio
Intelligent heat management in both chassis and magnet assembly design further minimizes distortion
Nominal diameter (mm/in)
305/12
Power Rating (AES, W rms)
300
Nominal impedance (Ω)
8
Voice coil diameter (mm/in)
76.2/3.0
Magnet type
Neodymium
Chassis type
Cast aluminium
Sensitivity (dB)
98
Frequency range (Hz)
50-4000
Coil material
Round copper
Cone material
Kevlar loaded paper
Surround material
Cloth-sealed
Suspension
Single
Xmax (mm/in)
4/0.16
Gap depth (mm/in)
8.0/0.32
Voice coil winding width (mm/in)
16.0/0.63
Small Signal Parameters
D (m/in)
0.26/10.24
Fs (Hz)
56.4
Mmd (g/oz)
54.41/1.92
Mair
6.92/0.244
Qms
2.74
Qes
0.33
Qts
0.29
Re (Ω)
5.77
Vas (lt/ft3)
51.78/1.828
BI (Tm)
19.61
Cms (mm/N)
0.13
Rms (kg/s)
7.921
Le (mH)
0.778
Mounting Information
Overall diameter (mm/in)
310/12.2
Overall depth (mm/in)
137/5.39
Cut-out diameter (mm/in)
286/11.26
Mounting slot dimensions (mm/in)
6.5/0.26 x 9.5/0.37
Number of mounting slots
8
Mounting slot PCD range (mm/in)
294/11.57
Unit weight (kg/lb)
2.6/5.7
Packed Dimensions and Weight
Single pack size W x D x H (mm/in)
-
Single pack weight (kg/lb)
-
Multipack (60) size W x D x H (mm/in)
1080 x 980 x 880/42.5 x 38.6 x 34.6
Multipack (60) weight (kg/lb)
146/321
Long excursion 12" woofer with 800W power handling for
subwoofer application. A special 3" copper voice coil using
proprietary high temperature adhesives and an optimized
magnet assembly guarantees superb LF dynamic range with a
very low distortion. Due to the linear characteristics of the 12
PZ 32, exceptional results are obtained in horn loaded
subwoofer applications.
Specifications
Nominal Diameter 320 mm (12 in)
Nominal Impedance 8 Ω
Minumum Impedance 7.8 Ω
Power Handling
(70 –700 Hz)
Nominal1 400 W
Continuous Program2 800 W
Sensitivity (1W/1m)3 95 dB
Frequency Range 40-2500 Hz
Voice Coil Diameter 76 mm (3 in)
Winding Material Copper
Former Material Glass Fibre
Winding Depth 22 mm (7/8 in)
Magnetic Gap Depth 10 mm (3/8 in)
Flux Density 1.1 T
Also available in 4 Ω, data upon request
Thiele & Small Parameters4
Fs 38 Hz
Re 6.2 Ω
Qes 0.2
Qms 5.9
Qts 0.19
Vas 102 dm3 (3.6 ft3)
Sd 522 cm2 (80.9 in2)
η0 2.7%
X max ± 5.5 mm
X var ± 5.5 mm
Mms 64 g
Bl 21.7 T·m
Le 2.7 mH
Mounting and Shipping Information
Overall Diameter 316 mm (12.4 in)
Bolt Circle Diameter 296 mm (11.6 in)
Baffle Cutout Diameter 282 mm (11.1 in)
Depth 134 mm (5.3 in)
Flange and Gasket Thickness 16 mm (5/8 in)
Net Weight 7.6 kg (16.7 lb)
Shipping Weight 8.5 kg (18.7 lb)
Shipping Box 380x380x170 mm
(15x15x6.7 in)
1 2 hours test made with continuous pink noise signal (6 dB crest factor) within the
specified range. Power calculated on rated minimum impedance. Loudspeaker in
free air.
2 Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
3 Applied RMS Voltage is set to 2.83V for 8 ohms Nominal Impedance. Average
SPL from 200 to 2500 Hz.
4 Thiele-Small parameters are measured after a high level 20 Hz sine wave preconditioning
test.
This classic guitar speaker actually started life as a radio speaker that was modified specifically for use in electric guitar amplifiers. In its original incarnation as the G12 T530 it appeared in several colour variations, but it was the Blue version, fitted as standard into Vox AC30 amps, that secured its place in guitar tone history.
The Blue found favour with notable guitarists like Brian May, due to its glorious dampened attack, warm lows, mellow upper-mids and brilliant belllike top-end. When coupled with a suitable amplifier it evokes rich definition and develops beautiful musical compression when pushed. According to tone enthusiasts worldwide, the Blue is the benchmark for guitar speaker perfection.
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