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.
AVAILABLE NOW: Birmingham 1275 Impulse Response
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