SUB WOOFER

SUB 21-1200
PROFISSIONAL LINE
INCHES
21
OHMS
8
WRMS
1200
dB
95

The Sub 21-1200 is a subwoofer that is designed to reproduce low frequencies, supporting high power, offering high performance and quality. It comes with a Double magnet magnetic set and efficient thermal dissipation system which ensures the Best results for the transducer. It makes use of a special cellulose cone and a movable system of high compliance and resistance which allows it to endure intense sounding pressure. It is especially suitable for sub-bass reproduction.

APPLICATIONS
Musical Instruments Enclosures, Bass Enclosures, Multi-Way Enclosures, Electric Trios, P.A., Outward Sound, Hard Beat, Churches/Temples, Night Clubs, Movie Theatres, Bands
SUB-21-Frente

21

INCHES
SUB-21-Diagonal-Frente
FRAME
ALUMINUM
SUB-21-Traseira
4 1/2”
VOICE COIL
ESPECIFICATIONS
Nominal Impedance: 8 Ohms
Frequency Range: 30~1.200 Hz
Min. Frequency Cut: 35 Hz
Sensibility: 95 dB
Power Rating: 1200 Watts
Program Power: 2400 Watts
Voice Coil Diameter: 4½ Inches
TS PARAMETERS
Ressonance Frequency: Fs 26 Hz
Voice Coil Resistance: Re 5,5 Ω
Total Quality Factor: Qts 0.49
Mechanical Quality Factor: Qms 0.57
Electrical Quality Factor: Qes 3.9
Equivalent Air Volume: Vas 483.5 L
Surface Area of Cone: Sd 0.173 m²
Max. Displacement: Xmax 9 mm
MATERIALS
Magnet: Barium Ferrite
Voice Coil Wire: Copper
Voice Coil Body: Kapton®
Frame: Injected Aluminum
Cone: Cellulose w/ Fibers
Suspension: Tissue
DIMENSIONS
Larger Diameter: 540 mm
Total Height: 259.5 mm
Cabinet Drilling: 490 mm
Magnet Diameter: 225 mm
Magnet Height: 36 mm
  • Curva

* Brazilian Standard NBR 10303, with passive splitter 12 dB / Octave and pink noise for 2 hours. Response curve in standard box with divider.

+ INFORMATIONS (PDF)
ACOUSTIC BOX PROJECT
Liters Recommended = 210 to 350 L

Acoustic Box Oversound
Observations:

• The ducts should be constructed according to the desired tune. • From 6 to 12 inches speakers: Working with wood thickness of 15 to 18mm. • From 15 to 21 inches speakers: Working with wood thickness of 18 to 30mm. • To calculate the ducts we suggest the software Bassbox 6 PRO or WinISD.