Atlas Sound FC104T - Manual

AtlasSound.com

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1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.

TELEPHONE: (800) 876-3333

FAX (800) 765-3435

©2008

Atlas

Sound

LP

. All

rights

reserved.

Atlas

Sound

is

a

trademark

of

Atlas

Sound

LP

.

A

TS002794

RevB

9/08

4" High-Compliance Loudspeaker with Transformer

FC104 Series

Applications

Utilize Atlas Sound 4" high-compliance loudspeaker Model FC104 for
voice trans mis sion, music and signal re pro duc tion in commercial, in dus tri-
al and in sti tu tion al applications of all kinds, especially those where a high
performance loud speak er is required and wide dispersion is demanded.

General Description

This compact, full-range, 4" (127 mm) loudspeaker is equipped with a
damped, high-compliance cone which provides excellent low fre quen cy
re pro duc tion and smooth extended response. Model FC104 also offers
a wide dispersion angle which reduces the number of loudspeakers
nec es sary to achieve total cov er age in low-level dis tri bu tion systems.
The 10 watt, 8

Ω

model (w/o transformer) offers a frequency response

range of 150 Hz – 17 kHz, sensitivity of 94 dB (1 W / 1 M) and a disper-
sion angle of 135° (-6 dB, 2 kHz octave band). The unit contains a 10 oz
(283 g) ce ram ic magnet with a flux density of 10,500 gauss. Loudspeaker
is available with three different factory installed line matching transform-
ers to meet a variety of project requirements. A dual-purpose bracket
securely mounts the transformer in a low profile position and enables
torsion spring mounting found on many Atlas Sound baffles. (Bracket
not included on base model FC104.) For additional information on Atlas
Sound Transformer models, refer to #SL1-1369.

Features

• Industry Standard, 10 watt, 4" High-Compliance Loudspeaker
• Offers Proven Performance with Wide-Angle Sound Dispersion
• Efficient Wide-Range Frequency Response
• Versatile 8 watt, 70.7V (25V / 70.7V with model LT-87) Transformer

with taps from .5 – 8 watts

• Ideal for Public Address and Background Music Installations
• Mounts In a Large Selection of Atlas Sound 4" Enclosures and Baffles

Base Speaker Specifications

Speaker Size

4" (127 mm) (5" E.I.A. Standard)

Speaker Type

High Compliance

Power Rating

10 watts Program

Frequency Response

150 Hz – 17 kHz (± 5 dB)

Magnet, Ceramic

10 oz. (283 g)

Resonance

101 Hz

Voice Coil Impedance

8

Ω

Voice Coil Diameter

1" (25 mm)

Flux Density

10,500 Gauss

Depth (w/o Transformer)

2

1

⁄

4

" (57 mm)

Sensitivity (Peak)

94 dB (1W / 1M)

Dispersion

135° (-6 dB, 2 kHz Octave Band)

FC104-T70

Transformer Model

LT-70

Primary Voltage

70.7V

Transformer Freq. Resp.

100 Hz – 10 kHz (±1.5 dB)

Primary Taps

.5, 1, 2, & 5 watts

Secondary Impedance

8

Ω

Insertion Loss (Max)

1.5 dB

Core Size

1

⁄

2

" x

5

⁄

8

" (13 mm x 16 mm)

Power Rating

5 watts

FC104T72

Transformer Model

LT-72

Primary Voltage

25V / 70.7V

Transformer Freq. Resp.

100 Hz – 10 kHz (±1.5 dB)

Primary Taps

.5, 1, 2, & 4 watts

Secondary Impedance

8

Ω

Insertion Loss (Max)

1.5 dB

Core Size

1

⁄

2

" x

5

⁄

8

" (13 mm x 16 mm)

Power Rating

4 watts

FC104T

Transformer Model

LT-87*

Primary Voltage

70.7V

Transformer Freq. Resp.

50 Hz – 15kHz ±1.5dB

Primary Taps

.5, 1, 2, 4, & 8 watts

Secondary Impedance

4

Ω

& 8

Ω

Insertion Loss (Max)

.6 dB

Core Size

1" x

3

⁄

4

" (25 mm x 19 mm)

Power Rating

8 watts

* FC104T includes a special version of Model HT87 transformer that

includes a .5 Watt tap.

FC104T

(Shown with Transformer. Bracket is

not supplied unless transformer version

is ordered.)