NF04R Active Speaker

Fostex Article no: FONF04R

Price:
$849

Description

NEW: - New November 2024

NF04R Active Speaker
The smallest of new NF Series being the 4" (10cm) using the HR Shaped Woofer.

The speaker delivers tight, high-speed bass that transcends its size.

It uses our "UDR tangential edge" and a "push-pull damper". This eliminates the reverse resonance of the edge, resulting in a highly linear and responsive mid-low range.

Note: Sold as a single speaker; (NF04R Active Speakers are sold as a single speaker for multi-channel monitoring requirements) not in pairs & excludes optional EB6301 mounting bracket.

A soft dome tweeter with a UFLC diaphragm is used for high tracking and reproducibility of micro-signals. In addition, magnetic fluid is used in the magnetic circuit to ensure stable operation over long periods of use.

The monitor is equipped with a 30W high performance D class amplifier for woofers, 20W for tweeters, and a Biamp system that drives speaker units. Equipped with; adjustable sound pressure levels to suit your listening environment, low range properties adjust sound pressure levels to -2dB, -4dB, -6dB and tweeter sound pressure levels to -2dB. The gain can be switched between 0dB/+10dB according to the output level of external audio equipment.HR Diaphragm

HR (HP ROTATION) is a circular rotation to further improve the shape of HP (HYPERBOLIC PARABOLOIDAL), known in the field of architectural mechanics. This shape works only as an internal stress, and does not operate bending stress, so it is lightweight and high rigidity, and it disperses resonance from split vibrations, so it fits well with the diaphragm.

UFLC Diaphragm

UFLC is a diaphragm made from poly/urethane resin laminated to a cloth material and is used for the tweeter. This diaphragm allows you to reproduce sound signals that are naturally extended to high range.

UDR Tangential Edge

It is used on the edge of the woofer which has key functionality for speaker operation.

Compatible with optional EB-6301

It can also be installed on the wall or ceiling.

Main Specifications

Speaker part:

Enclosure 2-Way Bass Reflex
Unit Used: 3.9 inches (100 mm), HR Shape Woofer, 0.7 inch (19 mm) Soft Dome Tweeter
Frequency Response Range: 57 Hz - 36 kHz
Volume: 0.7 gal (2.8 L)

Amplifier Part:
Rated Output Woofer: 30W, Tweeter: 20W
Input Terminal XLR-3-31 Type (No. 2 HOT) (Balanced) φ6.3 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
Input Impedance: Over 20kΩ
Volume -∞ ~ 0dB
LO FREQUENCY (80Hz) 0 / -2 / -4 / -6dB
Tweeter level 0 / -2dB
Gain 0 / +10dB

General
External Dimensions (W x H x D): 4.7 x 7.4 x 6.2 inches (120 x 189 x 157 mm). *Not including protruding objects.
Weight: Approx. 6.6 lbs (3.1 kg).
Power Supply (AC IN) 100 V ~ 50/60 Hz
Power consumption: 30 W

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