Ashly FA 125.2, FA 125.4, FA 250.4 User Manual

FA Series

High-Density
Power
Amplifiers.

Perfect for
conference
rooms or
anywhere
space is at a
premium.

ou don’t have to sacrifice

Y

space to get up to four
channels of clean, robust ampli­fier power.

The half- and one-rack-space
size FA Series high-density
Class D amps belie their output:
up to 125 W x 4 in a half rack
space…up to 250 W x 4 in one
rack space!

FA amplifiers can nestle under
conference tables, inside kiosks
and trade show exhibits, recep­tion area counters and any­where else a larger amplifier just
won’t fit.

Naturally, they have the
rugged reliability that Ashly is
known for…including a 5-year
warranty.

❚ Conference Rooms

❚ Trade Show Exhibits

❚ Huddle Rooms

❚ Inside Displays & Kiosks

❚ Bars and Restaurants

❚ Reception Areas

❚ Hotel Lobbies

➞

FA 125.2 FA 125.4

FA 250.4

DATA

SHEET

on

PAGE THREE

Page 2 of 4

FA Series

This page
intentionally
left blank*.

High-Density Power Amplifiers

Data Sheet
begins on the
next page.

*Done so that those fortunate to have printers with

2-sided printing capabilities can print out the Data Sheet

on one sheet of paper.

Page 3 of 4

FA Series

he FA Series is designed for easy

T

and flexible placement, going where
other amps cannot: under conference
tables, behind displays, inside kiosks…
anywhere high-quality, reliable power is
needed, but space is limited.

The ½ RU FA-125.2 & FA-125.4 offer

125W of efficient Class D power per
channel (x 2 on the 125.2 and x 4 on the

125.4). With selectable Low Z or Hi Z
operation, they’re capable of powering
low-Z, full range speakers as well as 70V
and 100V distributed speaker systems.

Where additional power is needed,
the full 1 RU, 4 x 250W FA-250.4 (also
designed for Hi/Low Z) delivers seriously
high power-density in a 1U package.

The FA-125.2 and FA-125.4 can share
power between channel pairs up to a
total of 250W total per pair. So a system
may be designed with a180W load on
one channel and 70W on the other. Or if
a single channel only is driven, 250W can
be output to drive a heavier load such as
subwoofer.

❚ 2 and 4-channel models
❚ 125 and 250 W @4Ω
❚ 70/100V capability
❚ Efficient Class D design
❚ Energy Star certified
❚ Adaptive fan cooling
❚ Installer-friendly Euroblock

connectors

❚ 80Hz HPF (in Hi Z Mode)
❚ Front panel Signal/Clip/

Mute LED

❚ Front panel Input Level

controls and Power On/

Off w/lockout

❚ USB port for firmware

updates

❚ Power-sharing on ½ RU

models up to 250W

❚ 5-Year Warranty

FA SERIES SPECIFICATIONS

Configuration

Size Fo rmat (HxW) 1RU x 1/2 19” 1RU x 19”

Output Power (per channel)

High-Density Power Amplifiers

4Ω / 8Ω all

Chs

FA-125.2 2

FA-125.4 4

Width

½ 19 "

½ 19 "

FA-250.4 4 1U 250W 250W 250W

FA 125.2 FA 125.4 FA 2 50.4

Configuration Pre-BTL

# of Channels 2 4 4

2 Ohm Not Recommended

4 Ohm 125W 250W

8 Ohm 125W 250W

16 Ohm 12 5W 250W

70V 125W 250W

100V** 12 5W 250W

Power Sharing Yes x 2 (up to 250W ) No

chs.driven 70V 100V

125W 125W 125W

125W 125W 125W

Crosstalk <65dB

Frequency Response

(±0.05d B)

S/N Ratio (20Hz-

20kHZ, unweighted)

Input Sensitivity

THD + Nois e < 0.5%

Damping Factor
(8 Ohms < 1kH z)

US toll-free +1.585.872.0010

[e-mail] • www.Ashly.com

FA 125.2 FA 125.4 FA 2 50.4

–10dBV (0.316Vrms)/+4dBu

(1.228Vrms), Selectable

continued on the next page

Fax [phone]

FA 125.4

FA 250.4

FA 125.2

20HZ-20kHz

>102d B

>25 0

FA Series

High-Density Power Amplifiers

FA SERIES SPECIFICATIONS

FA 125.2 FA 125.4 FA 2 50.4

Power Consumption (1/8 full power,
1kHz sin e-wave on all channel s, in Watts)

Sleep (En ergy Star) <0.5 <0.5 <0.5

Idle L o-Z 8 15 25

Idle Hi-Z 13 25 30

1/8 Power (4 O hms) 52 104 196

1/8 Power (8 O hms) 49 96 186

1/8 Power ( 70V) 51 101 191

1/8 Power ( 100V) 48 96 181

Thermal Dissipation (BTU/hour w ith typical inpu t,
all channels driven, 120VAC)

Sleep mode <1.7 <1 .7 <1.7

Idle Lo-Z (no s ignal) 28 52 86

Idle Hi-Z (no si gnal) 45 85 103

1/8 max po wer,

4 Ohm

1/8 max po wer, 8

1/8 max po wer, 70V 69 133 226

1/8 max po wer, 100V 58 116 191

Ohm

Voltage Gain(per output mo de and input sensitivi ty
setti ng, in dB)

Low Z @ –10dB V 43.1

Hi-Z 70V @–10d BV 46.9

Hi-Z 100V @ –10d BV 49.1

Low Z @ +4 dBu 31.3

Hi-Z 70V @ +4 dBu 3 5.1

Hi-Z 100V @ +4 dBu 3 7.3

I/O Features

HPF

Clip Limiter Yes (at clip thr eshold +24dBu,

Connectors

Input

Output

GPIO

USB USB-C for Firmware update

DIP Switches

1) Note: When maki ng a true co mpariso n of energ y effici ency, one mus t look at

the Thermal Dissipation (BTU/hr) numbers for a product. All other efficiency,

i.e. “perc entage ” numbers a re not st andards b ased, and t herefo re may be
marketing hype. Ashly Audio builds highly efficient Class-D amplification with
SMPS t hat will eq ual or surp ass the co mpetit ion on BTU /hr therm al outpu t
(unused e nergy pe r channel gi ven off a s heat). Ple ase check o ur publish ed
BTU/hr. specifications for more information.

2) FA 125.2:two channels

1

72 144 243

62 116 209

Yes. 80Hz (in H iZ Mode,

non-defeatable)

non-defeatable)

Removeable Euroblock/

Balanced 6-pole (pr)

Removeable Euroblock/

2-pole (p er ch)

Removeable Euroblock/ 6-pole

DC volume p er channel pair2,

Standby, Fault Out

1 HiZ/L owZ Ch 1

2 HiZ/LowZ Ch 2

3 Not Used Hi Z/LowZ Ch 3

4 Not Used HiZ /LowZ Ch 4

5 70/100V

DIP Switches (continued)

FA 125.2 FA 125.4 FA 2 50.4

6 Input Sensitvi ty (–10/+4dB)

7 Standby Pola rity (NO/NC)

8 Front P anel Lockout

LEDs/Indicators

Front L ED (per

channel)

Front L ED (Main)

Green: Signal Present, Yellow:

Limit (+24dbu), Red: Mu te/Protec t

White-On, Blink (0.5Hz)-Standby,

Dark-Off

General

Pre-Sleep Mode

Sleep Mode

Standby Mode

Remote Control

Amplifier Protectio n

Standby Switch Soft S witch w/ LED back light

Power Connector IEC

Attenuators

Power Supply 100-240VAC, 50-60Hz

Minimum Startup

Environmental

Safety Compliance

>15 minutes inactivity, all channels

muted, wake-on-audio

>29 minutes inactivity, Energy

Star® power saving mode, power

LED blin ks every two s econds,

wake-on-audio

Contact closure activated,power

LED flashes evenly @1Hz

Options

Cooling

Voltage

WR-1, WR -1.1 DC level con trol

Adapt ive Fan Cooling

(side -to-r ear venting)

Over-temperature, output DC,

output over-power, AC mains

voltage, mains fuse

Reces sed Front panel I nput Level

85VAC@ 120V nominal, 170VAC@

240V nominal

32°F-104°F, (0°C-40°C)

non-condensing

UL, Ener gy Star®, CE, FC C Class

(per ch)

B, RoHS

Weights & Dimensions • US measure

Unit Weight (lbs) 3.55 5.36 7.8 9

Unit Height (in.) 1.7 2 1.72 1.72

Unit Wi dth (in.) 8.66 8.66 1 7.3 3

Unit Dep th (in.) 10.32 13.3 11.54

Shipping Weight (lbs) 5.66 7.1 4 1 0.12

Shipping Height (in.) 8.94 8.9 4

Shipping Width (in.) 23 28.7

Shipping Depth (in.) 19.4 23.2

Weights & Dimensions • Metric measure

Unit Weight (kg) 1.61 2.4 3 3.6

Unit Height (mm) 43.7 43.7 43.7

Unit Wi dth (mm) 220 220 440

Unit Dep th (mm) 262 338 293

Shipping Weight (kg) 2.3 7 3.24 4.63

Shipping Height (mm) 227 227

Shippin g Width (mm) 584 729

Shippin g Depth (mm) 492 589

© 2020 A shly Aud io, Inc, Al l Rights R eserv ed. Ashl y and Aqu aContr ol are tr ademar ks
or registered trademarks of Ashly Audio, Inc. All other trademarks are the propetry
of their respective holders. V120A

All Specifications are subject to change.

Page 4 of 4

Wall mount bracket for

FA 125.2 & FA 125.4

Rack rear support for FA 250.4

FA 250.4

Rack Mount

FA 125.2. &
FA 125.4
Single Rack Mount

USER MANUAL

Or download
the complete
User Manual at

http://ashly.com/wp­content/uploads/2019/
09/FA_Manual.pdf

FA SERIES
ARCHITECT &
ENGINEERING
SPECIFICATIONS

in .txt and MS Word .docx format
are available in the

DOWNLOADS section of

http://ashly.com/fa series-amplifiers/

FA SERIES
2D AUTOCAD FILES

are available in the
DOWNLOADS section of

http://ashly.com/fa series-amplifiers/

Ashly Audio, Inc. • 847 Holt Road • Webster, NY

USA • US toll-free +1.585.872.0010

Fax [phone] •[e-mail]

www.ashly.com

FA 125.2. &
FA 125.4
Dual Rack Mount