Mod 8-20

Mod 8-20

General Characteristics
Nominal Overall Diameter 207 mm 8 in
Nominal Voice Coil Diameter 25 mm 0.98 in
Magnet Weight 160 g 6 oz
Overall Weight 0.68 kg 1.5 lbs
Flux Density 1 T
Thiele-Small Parameters
Nominal Impedance
Voice Coil DC Resistance RE 3.26 Ω 6.5 Ω
Resonance Frequency ƒS 111.2 Hz 119.4 Hz
Mechanical Q Factor QMS 19.23 19.88
Electrical Q Factor QES 2.52
Total Q Factor QTS 1.74 2.24
Mechanical Moving Mass MMS 10.1 g 10.3 g
Mechanical Compliance CMS 204 µm/N 173 µm/N
Force Factor BxL 3.47 Wb/m 4.45 Wb/m
Equivalent Acoustic Volume VAS 13.1 lt. 11.1 lt.
Maximum Linear Displacement XMAX ± 1.5 mm ± 1 mm
Reference Efficiency nO 0.9 % 0.72 %
Diaphragm Area SD 213.8 cm2 213.8 cm2
Losses Electrical Resistance RES 32.8 Ω 51.1 Ω
Voice Coil Inductance @ 1kHz LE 0.3 mH 0.4 mH
Constructive Characteristics
Magnet Ferrite
Voice Coil Winding Copper
Voice Coil Former Epotex
Cone Material Paper
Surround Material Integrated Paper
Dust Dome Material Non-treated Cloth
Basket Material Pressed Sheet Steel
Electrical Characteristics
Nominal Impedance
Rated Power 20 W 20 W
Musical Power 40 W 40 W
Sensitivity@1W,1m 93.2 dB 93.2 dB
20 watts
Available in 4Ω, 8Ω

Straightforward tone with smooth highs and more predominant lows. It responds to overdrive distortion with a mellow fuzz overdrive.

Guitarist Description
Straightforward tone with smooth highs and more predominant lows. Responds to overdrive distortion with a mellow fuzz overdrive.
Bassist Description
Sound Samples
Want a more in-depth demonstration of our speakers? Try our Jensen speaker demonstration.
Having trouble playing our sound samples? Access the files directly.
Specification Sheet
Product Dimensions
Note: all dimensions are in mm.
User Reviews

I installed a Mod 12-70 in my Lab L3 and i was immediately knocked out by the sound - the low end was tighter and the mids were more complex. Clean or distorted it was the sound I had wanted for years. On a whim I installed a Mod 8-20 in an old Peavey Rage 158 - the sound opened up with more lows and mids and volume. This small 15W amp is now my go-to for small rooms and recording.

Matt Richards

I bought four 8" MOD speakers for a 4x8” cab project I was working on. I’m really happy with the speakers. They were easy to install and sound really good paired with a Fender Pro Jr as the head. Congrats on a great product.

Ed in New York, NY