Wat: Eminence EJ1250 gitaarspeaker
Prijs: $ 289,99 (± 216,- euro)
Website: eminence.com

Om deze signature gitaar speaker te maken voor Eminence werkte Eric Johnson samen met George Alessandro. Het doel was om een speaker te maken met de kenmerken van US model speakers van het eind van de jaren 50 en de Britse modellen van eind 60-er jaren. Het resultaat is een speaker met ‘punchy lows, warm throaty mids, and articulate highs’ aldus de website van eminence.com.

De specificaties van deze speaker kan je vinden op de website eminence.com of door op “Continue reading” te klikken onder de YouTube video waarin Eric Johnson uitleg geeft over de Eminence EJ1250 speaker

Specification
Nominal Basket Diameter 12”, 304.8 mm
Nominal Impedance* 8 ohm
Power Rating** 50 W
Resonance 89.98 Hz
Usable Frequency Range 80 Hz – 5.1 kHz
Sensitivity*** 100.9 dB
Magnet Weight 35 oz.
Gap Height 0.31”, 7.95 mm
Voice Coil Diameter 1.75”, 44.45 mm

 

Materials of construction
Coil Construction Copper voice coil
Coil Former Paper former
Magnet Composition Alnico magnet
Core Details Non-vented core
Basket Material Pressed steel basket
Cone Composition Paper cone
Cone Edge Composition Paper cone edge
Dust Cap Composition Zurette dust cap

 

Thiele & small parameters
Resonant Frequency (fs) 89.98 Hz
DC Resistance (Re) 7.19
Coil Inductance (Le) 0.62 mH
Mechanical Q (Qms) 12.41
Electromagnetic Q (Qes) 0.65
Total Q (Qts) 0.62
Compliance Equivalent Volume (Vas) 44.96 liters / 1.59 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 62.34 cc
Mechanical Compliance of Suspension (Cms) 0.12 mm/N
BL Product (BL) 12.91 T-M
Diaphragm Mass Inc. Airload (Mms) 26.55 grams
Efficiency Bandwidth Product (EBP) 139.05
Maximum Linear Excursion (Xmax) 1.20 mm
Surface Area of Cone (Sd) 519.50 cm2
Maximum Mechanical Limit N/A

 

Mounting information
Recommended Enclosure Volume Acceptable
Sealed Acceptable
Vented 136.70 cu.in. / 2.24 liters
Driver Volume Displaced 12.02’’ / 305.31mm
Overall Diameter 10.97’’ / 278.64mm
Baffle Hole Diameter Fitted as standard
Front Sealing Gasket N/A
Rear Sealing Gasket 0.25’’ / 6.35mm
Mounting Holes Diameter 11.63’’ / 295.40mm
Mounting Holes B.C.D. 6.22” / 157.98mm
Depth 8.50 lbs / 3.86 kg
Net Weight 11.10 lbs / 5.00 kg
Shipping Weight 11.10 lbs / 5.00 kg