Boston 1020 - 10" Alnico Guitar Speaker, 20 Watt, 8 Ohm

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Create your next signature sound with the Boston 10” guitar speaker. Spotlight your tone with a driver that delivers a warm, articulate bottom-end, scooped mids, and blooming highs.

This model includes a good old fashioned 1960’s style Alnico magnet assembly for an ultra-quick impulse response. The often-misunderstood magic of Alnico is that it partially and temporarily demagnetizes when you push them hard, applying a simple compression effect that adds a satisfying sense of sweetness that can't be beat. 

  • American tone guitar speaker
  • 10" (250 mm) steel basket diameter
  • 20 watts, 8 ohm, 96 dB SPL
  • 1" copper voice coil, Kraft paper former
  • 6.8 oz alnico magnet
  • USA-made seamed paper cone

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.

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) 55 - 6,200
Sensitivity (dB SPL) ¹ 96
Resonant Frequency (Fs) (Hz) 104
DC Resistance (Re) (Ω) 6.3
Voice Coil Inductance (Le) (mH) 0.35
Mechanical Q Factor (Qms) 19.9
Electrical Q Factor (Qes) 1.77
Total Q Factor (Qts) 1.63
Mechanical Resistance (Rms) (kg/s) 0.58
Compliance Equivalent Volume (Vas) (L) 29.6
Suspension Compliance (Cms) (mm/N) 0.1
Surface Area of Diaphragm (Sd) (cm²) 397.6
Moving Mass (Mms) (gm) 17.5
Motor Force Factor (BL) (T•M) 6.4
Efficiency (η₀) (%) 1.83
Efficiency Bandwidth Product (EBP) (Fs/Qes) 58.8
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