Product Description

This 12 in. Delta Series speaker is ideal for sound reinforcement systems. It is also suitable for lead and bass guitar, keyboards, guitar combos, club music systems, and stage monitors.

Features
Kapton coil former

Ferrite magnet

Pressed steel basket

Polyamide-imide coated aluminum voice coil

Paper cone/cloth cone edge

Solid composition felt dust cap

Technical Description

Nominal Basket Diameter: 12 in., 304.8mm

Impedance: 8 or 16 ohm

Power Rating: 400W rms

Music Program: 800W

Resonance: 55Hz

Usable Frequency Range: 55Hz to 5Khz

Average Sensitivity: 1W @ 1m 100 dB

Magnet Weight: 56oz.

Gap Height: 0.375 in., 9.52mm

Voice Coil Diameter: 2.5 in., 63.5mm

Mounting Information
Overall Diameter: 12.02 in., 305.2mm

Baffle Hole Diameter: 10.97 in., 278.6mm

Front Sealing Gasket fitted as standard

Rear Sealing Gasket fitted as standard

Mounting Holes Diameter: 0.25 in., 6.4mm

Mounting Hole B.C.D.: 11.59 in., 294.3mm

Depth: 5.35 in., 136mm

Net Weight: 11.4 lbs., 5.2 kg

Shipping Weight: 13.5 lbs., 6.1 kg

Thiele-Small Parameters
Resonant Frequency: 55Hz

Impedance (RE): 6.3 ohm

Coil Inductance (Le): 0.74mH

Electromagnetic Q (Qes): 0.46

Mechanical Q (Qms): 5.27

Total Q (Qts): 0.43

Compliance Equivalent Volume (Vas): 81.3 liters/2.87 cu.ft

Peak Diaphragm Displacement Volume (Vd): 82cc

Mechanical Compliance of suspension (Cms): 0.21mm/N

BL Product (BL): 13.5 T-M

Diaphragm Mass inc. Airload (Mms): 39 grams

Equiv. Resistance of mechanical suspension loss (Rms): 2.55N*sec/M

Efficiency Bandwidth Product (EBP): 119

Voice Coil Overhang (Xmax): 1.6mm

Surface Area of Cone (Sd): 519.5cm2

Impedance at Resonance (Zmax): 78 ohm

Important Note

Watts: The guaranteed long term power rating throughout the usable frequency range of the speaker.

(Translation: the speaker will operate continuously at any frequency within the speakers specified frequency range when driven at this power. The "Watts" rating is similar to RMS, but is really more indicative of long term thermal capability.)

Music Program: The speaker will safely and reliably handle the varying frequencies of musical content at this power rating. The "Music Program" rating is more indicative of what you can expect in the real world with the speaker operating within the appropriate enclosure reproducing music or vocal audio program.

Product Rated 8.7 Out of 10 (12 ratings)

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