Leeds 1020

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Leeds 1020Leeds 1020Leeds 1020Leeds 1020
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Infuse your guitar tone with the timeless warmth of an alnico-driven British-style speaker. The Leeds 1020 from ToneSpeak delivers punchy lows, scooped mids, and soaring highs—offering definition at the extremes while still preserving a sweet, balanced character through the midrange.

A carefully designed 6.8-ounce alnico magnet softens the attack for a more vintage-flavored response, while the highly regarded Kurt Müller paper cone contributes a lush, full-bodied tone that truly complements your playing. Equipped with a 1-inch copper voice coil on a durable Kraft paper former, the Leeds 1020 is built to handle dynamic performances with clarity and nuance.

Key Features

  • 10-inch (250 mm), 20-Watt power handling at 8 Ω impedance
  • 96 dB SPL sensitivity for strong projection
  • Signature alnico magnet providing a warm, classic response
  • Kurt Müller paper cone for a rich, musical tonality
  • 1” copper voice coil with Kraft paper former for consistent performance
  • Steel basket design for stability and easy installation

Elevate your guitar rig with the Leeds 1020—where vintage flair meets modern reliability.

sensitivity & impedance curves

Input: 2.83 volts measured at 1 Meter

Input: 2.83 volts measured at 1 Meter

0 deg response
30 deg response
60 deg response
impedance
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  • General Specifications
    General Specifications for the Leeds 1020 speaker
    Nominal Diameter (in & mm)10" (250 mm)
    Nominal Impedance (Z) (Ω)
    Rated Power IEC268-5 (W)20
    Program Power (W)40
    Magnet Weight (g)193
    Voice Coil Diameter (mm)25
    Sensitivity (dB SPL)96
    Frequency Range (Hz)65 - 6300
  • Small Signal Parameters
    Small Signal Parameters for the Leeds 1020 speaker
    Resonant Frequency (Fs) (Hz) +/- 15%112
    DC Resistance (Re) (Ω)6.2
    Voice Coil Inductance (Le) (mH)0.35
    Moving Mass (Mms) (gm)15.84
    Suspension Compliance (Cms) (mm/N)0.1
    Motor Force Factor (BL) (T•M)5.91
    Mechanical Q Factor (Qms)18.38
    Electrical Q Factor (Qes)1.99
    Total Q Factor (Qts)1.8
    Compliance Equivalent Volume (Vas) (L)28.27
    Surface Area of Diaphragm (Sd) (cm²)397.61
  • Material Description
    The Material Description for the Leeds 1020 speaker
    Basket TypeCold-rolled steel
    Magnet MaterialAlnico
    Cone Body MaterialPaper composite
    Cone Surround MaterialPaper composite
    Dust Cap MaterialFelt
    Spider Material
    Voice Coil Wire MaterialCopper
    Voice Coil Former MaterialKraft paper
    Voice Coil Winding StyleSingle Layer
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