Boston 1020

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Boston 1020Boston 1020Boston 1020Boston 1020
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Get that classic tone of Alnico with the Boston 1020 by ToneSpeak. This 10-inch speaker brings warmth, articulation, and a touch of vintage compression that enhances your playing dynamics. With rich, full lows, scooped mids, and shimmering highs, the Boston 1020 ensures your guitar tone remains detailed and expressive across the full frequency range.

At the heart of this speaker is a classic 1960s-style 6.8 oz. Alnico magnet, designed for quick impulse response and a naturally dynamic feel. As you push the speaker, the Alnico magnet subtly compresses, delivering a smooth and musical breakup that adds an unmatched sweetness to your sound. Paired with a USA-made seamed paper cone, this speaker delivers the authentic American tone that guitarists crave.

Key Features

  • 10-inch (250 mm), 20-Watt power handling at 8 Ω impedance
  • 96 dB SPL sensitivity for a well-balanced output
  • Classic 6.8 oz. Alnico magnet for vintage compression and dynamic response
  • USA-made seamed paper cone for rich tonal character
  • 1” copper voice coil with Kraft paper former for durability and warmth

Add a touch of timeless American tone to your amp with the Boston 1020—where vintage character 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 Boston 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 Boston 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 Boston 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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