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Birmingham 1275 - 12" Guitar Speaker, 75 Watt, 8 Ohm

Birmingham 1275 - 12" Guitar Speaker, 75 Watt, 8 Ohm
Ship weight
5.90 kg
Priced per:
Stock Status:
8 ohm
Your price:
CDN $187.99
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Classic British rock tone, inspired by tones from the ‘60s and ‘70s.

Available Mid-April.Pre-Order Today

This speaker has a personality all its own, with balance from top to bottom and rich harmonic complexity.  Good punch and definition in the lows that won’t get flabby, a warm, throaty, and broad midrange, and nice grit with soaring articulation in the highs.

  • 12” speaker
  • 75 watts
  • 8 ohm
  • 50 oz. magnet
  • 1.75” voice coil diameter
  • Nomex voice coil former

ToneSpeak guitar speakers are the result of years and years of the deep-dive for the perfect tone.  Decades of testing, field experience and conversations with elite tone-chasers have all been poured into these fine products.  When you play ToneSpeak, you play the best.

More Information
Brand Name ToneSpeak
Size, Nominal (inch & mm) 12" (305 mm)
Shape of Speaker Round
Speaker Type Guitar Speaker
Application Musical Instruments
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 8
Rated Power IEC268-5 (W) 75 Watts
Frequency Range (Hz) 80 - 5,000
Sensitivity (dB SPL) ¹ 100
Resonant Frequency (Fs) (Hz) 93
DC Resistance (Re) (Ω) 7.1
Voice Coil Inductance (Le) (mH) 0.37
Mechanical Q Factor (Qms) 20.81
Electrical Q Factor (Qes) 0.71
Total Q Factor (Qts) 0.69
Mechanical Resistance (Rms) (kg/s) 0.84
Compliance Equivalent Volume (Vas) (L) 40.2
Suspension Compliance (Cms) (mm/N) 0.1
Surface Area of Diaphragm (Sd) (cm²) 539.1
Moving Mass (Mms) (gm) 29.9
Motor Force Factor (BL) (T•M) 13.09
Efficiency (η₀) (%) 4.35
Efficiency Bandwidth Product (EBP) (Fs/Qes) 130.15
Basket Type Stamped Steel with black powder coat painting
Terminal Size (mm) 5.2 x 0.5
Voice Coil Diameter (mm) 44
Voice Coil Wire Material High temperature copper
Voice Coil Former Material Nomex
Voice Coil Winding Style Single Layer
Magnet Material Ferrite
Magnet Weight (gm) 1417
Cone Body Material Felted paper
Cone Surround Material Felted paper with damping edge treatment
Dust Cap Material Open cloth
Spider Material Cotton
Net Weight (kg) 5.9
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