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Visaton BF 37 4 Ohm, 1.5 Inch, Full Range Speaker

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BF 37 · 4 Ω · part 2260 — Product photo

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BF 37 · 4 Ω · part 2260 — Product photoProduct photo BF 37 · 4 Ω · part 2260 — Rear view and connectionsRear view and connections BF 37 · 4 Ω · part 2260 — Response and impedanceResponse and impedance BF 37 · 4 Ω · part 2260 — Directivity patternDirectivity pattern BF 37 · 4 Ω · part 2260 — Dimension drawingDimension drawing

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

BF 37 · 4 Ω · part 2260 — Product photo

Product photo

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Part number: 2260

A long-excursion miniature driver for small vented or passive-radiator speakers.

Nominal size
3.7 cm / 1.5 inch
Impedance
4 Ω
Rated power
5 W (specified test)
Weight
33.1 g
Sensitivity
74 dB (1 W/1 m)
Connections
Solder lugs
ex VAT
£14.34 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 BF 37 uses a neodymium magnet and generous cone travel to support music and speech in compact equipment. It is designed for small vented enclosures or systems with a passive radiator. This 4 Ω version has its own motor and enclosure parameters, so use the matching data when designing the cabinet.

Typical applications

  • Compact music systems
  • Information terminals
  • Displays
Full specifications
BF 37 · 4 Ω
Rated power5 W — see test conditions below
Nominal impedance4 Ω
Frequency response (−10 dB)100–20000 Hz
Mean sound pressure level74 dB (1 W/1 m)
Excursion limit±3.4 mm
Resonance frequency fs155 Hz — confirm before enclosure design
Net weight33.1 g
D.C. resistance Rdc3.8 Ω
Mechanical Q factor Qms5.11
Electrical Q factor Qes0.86
Total Q factor Qts0.74
Equivalent volume Vas0.06 l
Effective piston area Sd6.2 cm²
Dynamically moved mass Mms1.0 g
Force factor Bxl1.99 Tm
Inductance of the voice coil L0.17 mH
TerminalsSolder lugs
Protective systemIPX4 — front side in a sealed enclosure
Rated-power testFree air; IEC 60268-2 adjusted broadband signal, 300–6000 Hz.
Dimensions and drawings
BF 37 · 4 Ω · part 2260 — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

Allow for the 37 mm frame and leave clearance for the solder lugs and moving surround. Check the basket profile and overall depth against the actual driver before cutting a close-fitting panel.

Seal the mounting joint into a sealed enclosure and protect the rear and terminals from moisture. IPX4 applies to the front only; adhesive and a front grille may be needed to complete the seal.

Use an amplifier suitable for the 4 Ω load and follow the polarity marks. Solder without prolonged heating, insulate the joints and secure the wires so they cannot touch the cone or pull on the lugs.

Use the matching impedance version’s parameters to develop a small vented or passive-radiator enclosure. Check cone travel at the intended level and use high-pass filtering where needed to limit excessive low-frequency excursion. Verify the tuning in the finished cabinet.

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