Birmingham 1275 - 12" Guitar Speaker, 75 Watt, 16 Ohm
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Classic British rock tone, inspired by tones from the ‘60s and ‘70s.
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.
- British tone guitar speaker
- 12" (305 mm) steel basket diameter
- 75 watts, 16 ohm, 100 dB SPL
- 1.75" copper voice coil, nomex former
- Kurt Müller guitar cone
- 50 oz. ferrite magnet
For the 8 Ohm Birmingham 1275, CLICK HERE.
A flat shipping fee of $15 is applied to US customers.
For international customers, CHECK OUR DISTRIBUTORS PAGE to see what is available near you.
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.
|Size, Nominal (inch & mm)||12" (305 mm)|
|Shape of Speaker||Round|
|Speaker Type||Guitar Speaker|
|Nominal Impedance (Z) (Ω)||16|
|Rated Power IEC268-5 (W)||75 Watts|
|Frequency Range (Hz)||80 - 5,000|
|Sensitivity (dB SPL) ¹||100|
|Resonant Frequency (Fs) (Hz)||104|
|DC Resistance (Re) (Ω)||13.9|
|Voice Coil Inductance (Le) (mH)||0.54|
|Mechanical Q Factor (Qms)||12.72|
|Electrical Q Factor (Qes)||0.91|
|Total Q Factor (Qts)||0.85|
|Mechanical Resistance (Rms) (kg/s)||1.49|
|Compliance Equivalent Volume (Vas) (L)||34.8|
|Suspension Compliance (Cms) (mm/N)||0.1|
|Surface Area of Diaphragm (Sd) (cm²)||551.6|
|Moving Mass (Mms) (gm)||29.0|
|Motor Force Factor (BL) (T•M)||17.0|
|Efficiency (η₀) (%)||4.12|
|Efficiency Bandwidth Product (EBP) (Fs/Qes)||114.18|
|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 Weight (g)||1417|
|Cone Body Material||Felted paper|
|Cone Surround Material||Felted paper with damping edge treatment|
|Dust Cap Material||Open cloth|
|Net Weight (kg)||5.9|
¹ Sensitivity is measured with 2.83 volt input, measured on-axis at 1 meter distance