4inch (100mm) Loudspeaker

This loudspeaker is especially well suited for use in RC Models, especially RC airplanes and helicopters due to its very high sensitivity. It has been carefully chosen for the best balance between sensitivity, power handling, weight and frequency response.

What's New:

February 15, 2022

New Learjet 35-70 executive jet sound set added bringing our total airplane sound sets
to 123.

November 06, 2021

New Shelley Foss Tugboat sound set added bringing our total boat sound sets to 75.

September 27, 2021

New RNL Tamar Class lifeboat sound set added bringing our total boat sound sets to 74.

September 05, 2021

Many Battleship/Warship sound sets added bringing our total boat sound sets to 73.

4inch (100mm) Loudspeaker



Frequency Response

Name : 4inch 20 Watt 4 Ohm loudspeaker

Item Number : LS4IN-20W-4
Size : 102mm x 102mm x 36mm (4" x 4" x 1.4")
Weight: 162 grams (5.7oz)
Frequency Response : 150-13000 Hz
Sensitivity : 90dB/1W/1m


ONLY Canadian and US Customers
can use the Add To Cart Button.
For all other countries please email us at contactus@modelsoundsinc.com for a shipping quote.

Highly recommended for model airplanes and helicopters -
90dB/1W/1m Sensitivity, light weight - 162 grams (5.7oz)

This German engineered loudspeaker sounds terrific, yet is shallow and weighs only 162grams. This fine loudspeaker can handle 20 Watts continuous, 30 Watts peak.

This 4 Ohm speaker can be used with our ShockWave series sound modules with no more than a 4S LiPo battery. If you wire two of these in series, the sound module can be powered on its maximum battery voltage of a 6S LiPo for maximum sound output.
See Wiring Loudspeakers.

Our loudspeakers can be ordered by new customers only at the same time as ordering a sound module from us, or by existing customers later who have already purchased a sound module from us.

When two of these speakers are used in series, the output level from our ShockWave series sound modules (on 26 Volts) can be around 107dB. This was measured with the speakers in open air. When housed in a small enclosure, the sound level will be even higher.