Leeds 1020 - 10 Inch Alnico Guitar Speaker, 20 Watt, 8 Ohm

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Give your listeners a tailored response of a sharp and punchy bottom-end, scooped mids, and soaring highs--keeping you in the fray at the extremes while maintaining an excellent sense of sweetness in the middle of your range.

This classic 10-inch guitar speaker delivers a vintage sound thanks to an alnico magnet motor that softens the tone without losing the immediacy. In addition, a vintage Kurt Müller paper cone maintains a lush, full-bodied sound profile that compliments your playing.

  • British tone guitar speaker
  • 10 inch (250 mm) steel basket diameter
  • 20 watts, 8 ohm, 96 dB SPL
  • 1-inch copper voice coil, Kraft paper former
  • 6.8 oz alnico magnet
  • Kurt Müller guitar cone

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ToneSpeak guitar speakers result from years and years of 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) 10" (250 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) 20 Watts
Rated Impedance (Ω) 8
Continuous Power (W) 20
Program Power (W) 40
Frequency Range (Hz) 65 - 6,300
Sensitivity (dB SPL) ¹ 96
Resonant Frequency (Fs) (Hz) +/- 15% 112
DC Resistance (Re) (Ω) 6.20
Voice Coil Inductance (Le) (mH) 0.35
Mechanical Q Factor (Qms) 18.38
Electrical Q Factor (Qes) 1.99
Total Q Factor (Qts) 1.80
Mechanical Resistance (Rms) (kg/s) 0.61
Compliance Equivalent Volume (Vas) (L) 28.27
Suspension Compliance (Cms) (mm/N) 0.1
Surface Area of Diaphragm (Sd) (cm²) 397.61
Moving Mass (Mms) (gm) 15.84
Motor Force Factor (BL) (T•M) 5.91
Efficiency (η₀) (%) 1.93
Efficiency Bandwidth Product (EBP) (Fs/Qes) 56.48
Basket Type Cold-rolled steel
Terminal Size (mm) 5.2 x 0.5 (Dual lug)
Voice Coil Diameter (mm) 25.4
Voice Coil Wire Material Copper
Voice Coil Former Material Kraft paper
Voice Coil Winding Style Single Layer
Magnet Material Alnico
Magnet Weight (g) 192.77
Cone Body Material Paper composite
Cone Surround Material Paper composite
Dust Cap Material Felt
Technical Notes

¹ Sensitivity is measured with 2.83 volt input, measured on-axis at 1 meter distance