Skip to content
VISATON loudspeakers and components · UK support · Trade and OEM enquiries welcome
{ "id":2010324992067, "title":"Visaton FR 87 4 Ohm, 3.4 Inch, Full Range Speaker","handle":"visaton-fr-87-4-ohm-3-4-inch-full-range-speaker", "description":"\u003cdiv class=\"product__main__box dd-text\"\u003e\n\u003cdiv class=\"field field--name-body field--type-text-with-summary field--label-hidden field__item\"\u003e\n\u003cp\u003e8.7 cm (3.4\") full range speaker with balanced frequency response and high efficiency. For speech and music reproduction in electronic devices and vehicles.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eTypical applications\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eMonitoring speaker for electronic devices\u003c\/li\u003e\n\u003cli\u003eVehicles\u003c\/li\u003e\n\u003cli\u003eElectronic musical instruments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eAttributes\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eMoisturised cone\u003c\/li\u003e\n\u003cli\u003eMetal basket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e", "published_at":"2019-01-22T10:50:03", "created_at":"2019-01-22T10:52:07", "vendor":"Visaton", "type":"Full-range driver", "tags":["4 Ohm","general purpose speakers","Impedance_4 Ohm","Size_3.4 inch","Type_Full Range Speaker","Visaton","Visaton - General Purpose Speakers: Full Range"], "price":895, "price_min":895, "price_max":895, "price_varies":false, "compare_at_price":null, "compare_at_price_min":0, "compare_at_price_max":0, "compare_at_price_varies":true, "all_variant_ids":[18569684975683], "variants":[{ "id":18569684975683, "product_id":2010324992067, "product_handle":"visaton-fr-87-4-ohm-3-4-inch-full-range-speaker", "title":"Default Title", "option1":"Default Title", "option2":null, "option3":null, "sku":"4630", "requires_shipping":true, "taxable":true, "featured_image":null,"image_id":null, "available":true, "name":"Visaton FR 87 4 Ohm, 3.4 Inch, Full Range Speaker - Default Title", "options":["Default Title"], "price":895, "weight":0, "compare_at_price":null, "inventory_quantity":-8, "inventory_management":null, "inventory_policy":"deny", "inventory_in_cart":0, "inventory_remaining":-8, "incoming":false, "next_incoming_date":null, "taxable":true, "barcode":null}], "available":true,"images":["\/\/impactaudio.co.uk\/cdn\/shop\/products\/fr87.jpg?v=1548154355","\/\/impactaudio.co.uk\/cdn\/shop\/products\/fr87_tz.gif?v=1548154374","\/\/impactaudio.co.uk\/cdn\/shop\/products\/fr87_4_fs.gif?v=1548154389","\/\/impactaudio.co.uk\/cdn\/shop\/products\/fr87_rd.gif?v=1548154403"],"featured_image":"\/\/impactaudio.co.uk\/cdn\/shop\/products\/fr87.jpg?v=1548154355", "options":["Title"], "url":"\/products\/visaton-fr-87-4-ohm-3-4-inch-full-range-speaker"}
  1. Home
  2. Visaton general-purpose speakers
  3. Visaton FR 87 4 Ohm, 3.4 Inch, Full Range Speaker

Visaton FR 87 4 Ohm, 3.4 Inch, Full Range Speaker

Previous Product | Next Product
FR 87 · 4 Ω · part 4630 — Product photo

Product photo · Enlarge image

FR 87 · 4 Ω · part 4630 — Product photo Product photo FR 87 · 4 Ω · part 4630 — Dimension drawing Dimension drawing FR 87 · 4 Ω · part 4630 — Response and impedance Response and impedance FR 87 · 4 Ω · part 4630 — Directivity pattern Directivity pattern

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

FR 87 · 4 Ω · part 4630 — Product photo

Product photo

Open original image

Quantity discounts

Part number: 4630

An 8.7 cm full-range driver for speech and music in vehicles, electronic instruments and monitoring equipment.

Nominal size
8.7 cm / 3.4 inch
Impedance
4 Ω
Rated power
15 W
Cut-out
80 mm
Sensitivity
85 dB (1 W/1 m)
Resonance
137 Hz
£8.95 Business price, ex VAT £10.74 inc VAT at 20%
Maximum quantity available reached.

Description

The FR 87 uses a moisture-resistant cone and metal basket. Its 4 Ω impedance and 15 W rated power suit compact integrated audio systems.

Typical applications

  • Vehicle audio installations
  • Electronic instruments
  • Equipment monitoring
Full specifications
FR 87 · 4 Ω
Rated power15 W
Maximum power20 W
Nominal impedance4 Ω
Frequency response (−10 dB)100–20000 Hz
Mean sound pressure level85 dB (1 W/1 m)
Opening angle (-6 dB)143°/4000 Hz
Excursion limit±2 mm
Resonance frequency fs137 Hz
Height of front pole-plate3 mm
Voice coil diameter15 mm
Height of winding4.3 mm
Cut-out80 mm
Net weight0.21 kg
D.C. resistance Rdc3.5 Ω
Mechanical Q factor Qms6.4
Electrical Q factor Qes1.56
Total Q factor Qts1.25
Equivalent volume Vas1.3 l
Effective piston area Sd37 cm²
Dynamically moved mass Mms2 g
Force factor Bxl2.1 Tm
Inductance of the voice coil L0.2 mH
Terminals4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Temperature range–25 to 70 °C; contact us for use in extreme temperatures
Dimensions and drawings
FR 87 · 4 Ω · part 4630 — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

Allow for an 80 mm panel opening and align the slotted fixing holes before drilling. Optional grille: FR 87, part 4639. Check the operating-temperature limits before fitting in a location exposed to extreme heat or cold.

Use an amplifier suitable for the 4 Ω load and observe terminal polarity. For a 100 V line system, connect through a suitable line transformer; do not connect the driver directly to the line.

Downloads

Related Products