DS18 12PRO2500MB-8

12" Professional Mid-Bass Loudspeaker with 4" ISV Voice Coil

Owner's Manual

Specifications

Nominal Diameter	12" / 300 mm
Nominal Impedance	8 OHMS
RMS Power Handling	1250 Watts
MAX Power Handling	2500 Watts
Sensitivity (1w/1m)	99 dB
Frequency Response	40Hz-5KHz
Recommended Hi Pass Crossover	80 Hz
Sold as Pair or Single	Single / Unidad

Features

Interleaved Sandwich Voice Coil (ISV): Yes
Improved Heat Dissipation: Yes
Cone Shape: Curvilinear
Speaker Terminals: Push with Spring Loaded

Motor Specifications

Voice Coil Diameter	4" / 101.6 mm
VC Former Material	Fiberglass
Winding Material	CCAW / CCA
Cone Material	Non-Pressed Paper
Dust Cap Material	Paper
Surround Material	Cloth
Basket Material	Aluminum
Basket Color/Finish	Black
Magnet Material	Ferrite
Magnet Weight	126 Oz
Displacement Volume	1.9L / 0.067ft³

Thiele & Small Parameters

Equivalent Volume (Vas)	32.9L / 1.16ft³
Excursion (one way) (Xmax)	2 mm
Free Air Resonance (Fs)	68 Hz
Mechanical Factor (Qms)	7.61
Electrical Factor (Qes)	0.45
Total Factor (Qts)	0.42
Mechanical Mass (Mms)	68.86 g
Mechanical Compliance (Cms)	0.08 mm/N
BL Factor (Bl)	19.82
Voice Coil Inductance (Le)	0.41 mH
Cone Area (Sd)	539.13 cm²
DC Resistance (Re)	5.9 ohm
Mechanical Mass w/o air (Mmd)	57.63 g

Measurements

The loudspeaker has the following physical dimensions:

Overall Diameter: 12.4" / 316 mm
Overall Depth: 5.78" / 147 mm
Front Mount Baffle Cutout: 11.22" / 285 mm
Mounting Depth: 5.4" / 137 mm
Motor Diameter: 8.6" / 220 mm
Mounting Hole Diameter: 0.25" / 6.5 mm

The graph titled "SPL vs Freq" illustrates the Sound Pressure Level (SPL) in decibels (dB) across a frequency range from 20 Hz to 20 kHz. The response shows variations, with a peak sensitivity around 105 dB.

The product is described as "Designed & Engineered in USA".

Warranty and Warnings

For detailed warranty information, please visit the official DS18 website: DS18.com.

DS18 reserves the right to modify product designs and specifications without prior notice. Optional equipment may be depicted in images.

Warning: Cancer and Reproductive Harm

⚠️This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warning.ca.gov.

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