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Fostex NF Series 4" Black Powered Stereo Speaker (Each)


Model #:

NF04R

Fostex NF Series 4" Black Powered Stereo Speaker (Each)-0
Fostex NF Series 4" Black Powered Stereo Speaker (Each)-1
Fostex NF Series 4" Black Powered Stereo Speaker (Each)-2
Fostex NF Series 4" Black Powered Stereo Speaker (Each)-3
Fostex NF Series 4" Black Powered Stereo Speaker (Each)-4

At a Glance

First in the NF series to adopt an aluminum die-cast body. The 4-inch HR-shaped woofer unit is mounted. The first compact active speaker in the NF series.Read More

Available in Store Only
$600.00

Get to know this product.

Product Overview

Product Overview

HR Diaphragm

HR (HP ROTATION) is a circumferential rotation of the HP (HYPERBOLIC PARABOLOIDAL) shape, which is known in the field of building structural mechanics, to further improve it. This shape is ideal for diaphragms, as it is lightweight and highly rigid, and disperses resonance caused by split vibrations, since only shear forces act as internal stresses and no bending stresses.

UFLC Diaphragm

UFLC is a diaphragm made of polyurethane resin with urethane film laminated to a cloth material, and is used in the tweeter of this unit. By using this diaphragm, it is possible to faithfully reproduce audio signals with natural extension to high frequencies.

UDR Tangential Edge

UDR (UP/DOWN ROLL) Tangential Edge is a revolutionary edge structure that combines up-roll and down-roll in a tangential plane, and the shape is based on FEM modal analysis to optimize the functions that the edge has. It is used for woofer edges, which have important functions for speaker operation.

Speaker Grille SN04 for Exclusive Use with NF04R

High-precision molded plastic frame and high-strength steel perforated grille are used. The inside of the grille is cushioned in various places to ensure that the grille can be installed without rattling. The grille can be attached and detached without the use of screws. Can be used for relay sites, halls, and other audio equipment applications.

Wall Mounting Bracket EB-6301

The angle of the speaker body can be adjusted and mounted on the wall. Robust steel plate 3mm thick is used.

Useful Documents
Specifications

General Specs

ColorBlack
Color/Finish NameBlack
Speaker TypePowered Stereo Speakers
Frequency Response57Hz - 36kHz
Impedance20 KOhms
Mounting TypeWall Mount, Tabletop
Mounting Hardware IncludedNo
Bi Amp InputsNo
Enclosure Type2-Way Bass Reflex
Enclosure MaterialAluminum Die-Casting
Outdoor ApprovedNo
WaterproofNo
Water ResistantNo
Dust ResistantNo
WirelessNo
Wireless Rear SpeakersNo
Wifi CapableNo
Bluetooth CapableNo
Smart CompatibleNo
Airplay CapableNo
Built-in MicrophoneNo
Number of Speakers1
Speaker Width (in.)4.7244
Speaker Depth (in.)6.1811
Speaker Height (in.)7.4409
Shipping Width (in.)9.5
Shipping Depth (in.)9.1
Shipping Height (in.)9.8
Speaker Weight (lbs.)6.834
CollectionNF series
SeriesNF series
Wattage30
Voltage100

Speaker Section

Units100mm HR shape woofer 19mm soft dome tweeter
Internal volume2.8L

Amplifier section

Rated outputWoofer: 30W, Tweeter: 20W
Input connectorXLR-3-31 type (No.2 HOT) (balanced) 6.3 mm (1/4″) TS phone (unbalanced)
Rated input level-10dBV (TS phone) / +4dBu (XLR) GAIN SW 0dB -20dBV (TS phone) / -6dBu (XLR) GAIN SW +10dB
Volume– ∞ to 0dB
LO FREQUENCY (80Hz)0 / -2 / -4 / -6dB
Tweeter Level0 / -2dB
Gain0 / +10dB