Guitar / Bass

Signature Series

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JS-1250

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 alnico. The result is an extremely versatile speaker with vintage tone and the ability to handle the power of modern amps.

Suggested Retail  $119.99
Your Price  $99.99

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This table charts the specifications for the JS-1250 speaker
Speaker Detail
Specification
Nominal Basket Diameter12", 305 mm
Nominal Impedance*8 Ω
Power Rating*
Program PowerN/A
Watts50 W
Resonance92 Hz
Usable Frequency Range80 Hz - 5.2 kHz
Sensitivity*101.4 dB
Magnet Weight38 oz.
Gap Height0.313", 7.95 mm
Voice Coil Diameter1.75", 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)41.04 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)0.00 mm
Mounting Information
Recommended Enclosure Volume
Sealed Acceptable
Vented Acceptable
Driver Volume Displaced0.07 cu.ft. / 2 liters
Overall Diameter12.17", 309.12 mm
Baffle Hole Diameter11.13", 282.7 mm
Front Sealing GasketYes
Rear Sealing GasketNo
Mounting Holes Diameter0.24", 6.1mm
Mounting Holes B.C.D.11.75", 298.5mm
Depth5.23", 132.84 mm
Net Weight8 lbs, 3.63 kg
Shipping Weight9.8 lbs, 4.45 kgs
Materials of Construction
Coil ConstructionCopper voice coil
Coil FormerNomex
Magnet CompositionFerrite
Core Details
  
Basket MaterialsPressed steel basket
Cone CompositionFull molded paper
Cone Edge CompositionPaper
Dust Cap CompositionZurette
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Footnotes

Multiple units exceed published ratings evaluated under EIA 426A specification while tested in a free-air, non-temperature-controlled environment. Multiple compression drivers exceeded published ratings evaluated under EIA-426A or AES specification while mounted on Eminence’s H290, H290S, or H2EA horn in a non-temperature-controlled environment.

The average output across the usable frequency range when applying 1W/1m into the nominal impedance. i.e: 2.83V/8Ω, 4V/16Ω. Eminence response curves are measured under the following conditions: All speakers are tested at 1W/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25" supplied microphone (software calibrated) mounted 1m from wall/baffle | 2 ft. x 2 ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction | Yamaha P3500S amplifier | 2700 cu. ft. chamber with fiberglass on all six surfaces (three with custom-made wedges). Compression drivers were tested using a 2ft x 2ft baffle built into the wall with horn front mounted.

BETA 8CX, 10CX and 12CX are coaxial speakers with tweeter sold separately. The data for these coaxial woofers was calculated with the ASD:1001 driver screwed into the woofer, but not active.

Prices, specifications and product cosmetics are subject to change without notice.