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Visaton K 50 4 Ohm, 2 Inch, Miniature Speaker

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K 50 · 4 Ω · part 2900 — Product photo

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K 50 · 4 Ω · part 2900 — Product photo Product view K 50 · 4 Ω · part 2900 — Alternate product view Rear view K 50 · 4 Ω · part 2900 — Dimension drawing Dimension drawing K 50 · 4 Ω · part 2900 — 4 Ω response and impedance 4 Ω response and impedance K 50 family directivity pattern; see labelled measurement K 50 family directivity pattern

Product photographs and manufacturer drawings. Images are not to scale.

K 50 · 4 Ω · part 2900 — Product photo

Product view

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Part number: 2900

A 5 cm (2 inch) 4 Ω miniature speaker with a plastic diaphragm and metal basket for voice and signal output where space is limited.

Nominal size
5 cm / 2 inch
Impedance
4 Ω
Rated power
2 W
Cut-out
45 mm
Sensitivity
83 dB (1 W/1 m)
Resonance
500 Hz
ex VAT
£2.95 inc VAT
Maximum quantity available reached.

Stock and dispatch
Selected products are held in UK stock; other lines are sourced to order. Dispatch timing depends on the product and quantity.

Delivery information. Need it for a specific date? Ask us.

Quantity discounts

Description

The K 50 is a compact miniature speaker with a Mylar diaphragm and metal basket. The 4 Ω version is rated at 2 W, covers 250–10000 Hz and has a 45 mm cut-out. The manufacturer lists IP65 for the front side only when the speaker is built into a sealed enclosure.

Typical applications

  • Voice and signal output in machines and equipment
  • Compact indoor or outdoor equipment where installation space is limited
  • Replacement speaker where the 4 Ω load, 45 mm cut-out and enclosure conditions match
Full specifications
K 50 · 4 Ω
Rated power2 W
Nominal impedance4 Ω
Frequency response (−10 dB)250–10000 Hz
Mean sound pressure level83 dB (1 W/1 m)
Opening angle (-6 dB)180°/4000 Hz
Excursion limit±0.5 mm
Resonance frequency fs500 Hz
Height of front pole-plate2 mm
Voice coil diameter14 mm
Height of winding3 mm
Cut-out diameter45 mm
Net weight0.05 kg
ConnectionsSolder lugs
Protective systemIP65 — front side in a sealed enclosure
Temperature range−40 to 70 °C
DiaphragmMylar
Dimensions and drawings
K 50 · 4 Ω · part 2900 — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

Check the 45 mm cut-out and the complete current dimension drawing before fitting. Allow clearance behind the panel for the speaker, solder lugs and wiring.

Connect the solder lugs to an amplifier suitable for the 4 Ω load and keep the leads supported and clear of the moving parts. Keep drive within the published 2 W rating.

The IP65 rating applies to the front side only when the speaker is built into a sealed enclosure; the manufacturer notes that gluing and a front cover or grille may be needed. Do not treat the speaker alone as a complete weatherproof installation.

The published operating temperature range is −40 to 70 °C. Confirm the enclosure, sealing and environmental exposure for the actual equipment before ordering.

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