Respected as much for his tone as his guitar skills, Josh Smith's concept for the ultimate guitar speaker involved combining the lows of the Eminence Tonespotter, the clean highs of the Wizard, and the natural grit and sparkle of the Red Fang. The result is an extremely versatile speaker with vintage tone and the ability to handle the power of modern amps.

Characteristics

Series		Signature
Model		JS-1250
Application		12" Open or Closed Back
Configuration		1, 2 or 4x12"
Low End Response		Aggressive
Low End Shape		Fat/Round
Mid-Range Response		Aggressive
Mid-Range Shape		Warm
High-End Response		Aggressive
Volume/Power		Louder
Overall Coloration*		An extremely versatile speaker with vintage tone and the ability to handle the power of modern amps.
Break-up Modes		Medium
Power Range		Up to 50 watts
Instrument*		Lead/Rhythm Guitar
Genre of Music*		Blues, Rock, Country

Specifications

Download Spec Sheet

SPECIFICATION
Nominal Basket Diameter	12", 0 mm
Nominal Impedance*	8 Ω
Power Rating*
Program Power	N/A
Watts	50 W
Resonance	92 Hz
Usable Frequency Range	80 Hz - 5.2 kHz
Sensitivity*	101.4 dB
Magnet Weight	38 oz.
Gap Height	0.313", 8 mm
Voice Coil Diameter	1.75", 44 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	92 Hz
DC Resistance (Re)	6.42 Ω
Coil Inductance (Le)	0.5m H
Mechanical Q (Qms)	15.69
Electromagnetic Q (Qes)	0.63
Total Q (Qts)	0.61
Compliance Equivalent Volume (Vas)	41.21 liters / 1.46 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	41 cc
Mechanical Compliance of Suspension (Cms)	0.11 mm/N
BL Product (BL)	12.91 T-M
Diaphragm Mass Inc. Airload (MMs)	28 grams
Efficiency Bandwidth Product (EBP)	145
Maximum Linear Excursion (Xmax)	0.79 mm
Surface Area of Cone (Sd)	519.5 cm2
Maximum Mechanical Limit (Xlim)	0 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed	N/a
Vented	N/a
Driver Volume Displaced	0.071 cu.ft. / 2 liters
Overall Diameter	12.17", 309.1 mm
Baffle Hole Diameter	11.13", 282.7 mm
Front Sealing Gasket	Yes
Rear Sealing Gasket	N/A
Mounting Holes Diameter	0.24", 6.1mm
Mounting Holes B.C.D.	11.75", 298.5mm
Depth	5.23", 132.8 mm
Net Weight	8 lbs, 3.63 kg
Shipping Weight	9.8 lbs, 4.45 kgs
MATERIALS OF CONSTRUCTION
Coil Construction	Copper voice coil
Coil Former	Nomex former
Magnet Composition	Ferrite magnet
Core Details	Non-vented core

Basket Materials	Pressed steel basket
Cone Composition
Cone Edge Composition	Full molded paper
Dust Cap Composition	Zurette dust cap

Frequency Response

Signature Guitar Series

JS-1250 12" Signature Guitar Speaker