Speakers


Miniature Rectangular Loudspeaker 40 x 20mm

A miniature low profile rectangular loudspeaker with high power handling capacity, available in 4Ω and 8Ω versions. Most sound cards specify use of a 8Ω speaker, lower impedance could cause the audio amplifier to overheat and shut down; best to use 2 of the 4Ω speakers wired in series.

Connections are via solder pads on the rear of the speaker (see More Images tab).

Power (Nominal)2.0 W
Power (Maximum)3.0 W
Impedance4Ω or 8Ω ± 15% ohms
Resonant Frequency400 ± 20% Hz
Sound pressure level(1W, 0.5M Average at 0.8,1.0,1.2,1.5KHz)
83 ± 3dB
Frequency range200Hz ~ 20KHz
Housing MaterialMetal
Magnet Size11 x 1.5mm
Magnet MaterialNd-Fe-B
Operating Temperature-20°C ~ +60°C
Storage Temperature-30°C ~ +70°C
Weight7.6g ± 5%

40x20 Speaker Drawing

40x20 Speaker, Front face
40x20 Speaker, Rear face showing solder pads


Miniature Rectangular Loudspeaker 40 x 28mm 4 ohm

A miniature 4Ω, 4W max, loudspeaker. Most sound modules specify use of a 8Ω speaker, a lower impedance speaker used at high volume could cause the audio amplifier to overheat and shut down. Using this 4Ω speaker should be OK at low volume and with plenty of air circulation around the sound module; if in doubt, use 2 of these wired in series.

Connections are via solder tags on the rear of the speaker (see More Images tab).

Power Nominal2.0 W
Power Maximum4.0 W
Impedance4 ± 15% Ohms
Resonant Frequency380 ± 20 %Hz
Sound Pressure Level(Average at 1W, 1M - 0.8,1.0,1.2,1.5KHz)
84 ± 3dB
Frequency Range0-20,000 KHz
Cone MaterialBlack Cloth Edge and Paper Cone
Housing MaterialsABS (Black)
Operating Temperature-20 ~ +60°C
Storage Temperature-30 ~ +70°C
Weight12g ± 5%

40x28 Speaker Drawing

40x28 Speaker, Front face
40x28 Speaker, Rear face showing solder pads

£ 4.80

Miniature Loudspeaker Rectangular 57.5 x 23mm

A miniature 8 ohm rectangular loudspeaker 2w max, with mounting lugs and 180mm lead.

The lead is terminated with a 2 pin Molex Picoblade plug.

Rated impedance8Ω ±15%
Nominal power1W
Maximum power2W
Resonant frequency700Hz ±20%
Frequency range0Hz to 20kHz
Sound output level93dB ±3dB
Dimensions (excluding lugs)57.5 x 23 x 14.85mm
Weight38g

57x23 Speaker Drawing

£ 9.00

Miniature Loudspeaker 28mm Round 8 Ohm

A miniature low profile round loudspeaker with 2W power handling capacity.

£ 2.65

Miniature Loudspeaker 30mm Round 8 Ohm

A miniature low profile round loudspeaker with 2W power handling capacity, 5.5mm thick.

£ 2.65

Miniature Loudspeaker Round 36mm

A miniature waterproof 8 ohm round loudspeaker 1w nominal, 2w max. Its 6mm thickness makes it suitable for applications where slim construction is needed. Being weatherproof, it is particularly suited to outdoor use.

Rated power1W
Maximum power2W
Nominal impedance
Frequency response–10dB 300-20000Hz
Mean sound pressure level77dB
Maximum cone displacement0.5mm
Resonance frequency550Hz
Voice coil diameter10mm
Height of winding2mm
Cutout diameter31mm
Overall diameter36mm
Net weight6g

36mm dia Speaker Drawing

£ 6.60

Visaton FRWS 5 R (45mm)

A miniature 8 ohm round loudspeaker 4w nominal, 10w max.

This is an ideal size speaker for fitting into a 50mm internal diameter plastic tube as a baffle.

Rated power4W
Maximum power10W
Nominal impedance
Frequency response–10dB 150-20000Hz
Mean sound pressure level84dB
Maximum cone displacement4mm
Resonance frequency320Hz
Voice coil diameter14mm
Height of winding3mm
Cutout diameter45mm
Overall diameter50mm
Net weight87g

45mm dia Speaker Drawing

£ 12.85

Visaton BF 45

A miniature 8 ohm round loudspeaker 4w nominal, 8w max and with low resonant frequency.

This is an outstanding speaker with excellent low frequency reproduction, ideal for use with a MyLocoSound sound module.

Rated power4W
Maximum power8W
Nominal impedance
Frequency response–10dB 90-20000Hz
Mean sound pressure level79dB
Resonance frequency158Hz
Voice coil diameter17mm
Height of winding4mm
Cutout diameter45mm
Overall diameter61mm
Net weight32g

BF45 Speaker Drawing

£ 19.80

Visaton 2901 K 50 (50mm)

A high quality 5cm round speaker particularly well suited to outdoor applications, 2w nominal, 3w max.

Rated power2W
Maximum power3W
Nominal impedance
Frequency response–10dB 180-17000Hz
Mean sound pressure level86dB
Resonance frequency fs300Hz
Voice coil diameter10mm
Cutout diameter46mm
Net weight48g
Protective systemIP65

50mm dia Speaker Drawing

£ 4.20

Miniature Loudspeaker Round 64mm

A small, low-profile 8 ohm round loudspeaker 4w nominal, 10w max.

£ 10.55

Mtroniks Waterproof Loudspeaker Round 80mm

A robust waterproof 8 ohm 12W speaker as used in the Mtroniks digiSound sound module sets. Fitted with 300mm wires and 2pin 2.54mm pitch plug.

£ 10.55