Ashly FA-250.4, FA-125.4, FA-125.2 User's Guide

FA SERIES

FA-250.4

FA-125.4

FA-125.2

4- and 2-channel

Power Amplifier

Operating Manual

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FA Amplifier • Operating Manual

FA Amplifier • Operating Manual

Important Safety Instructions •

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. To reduce the risk of fire or

electric shock, do not expose
this apparatus to rain or
moisture.

6. Do not use this apparatus near

water.

7. Clean only with dry cloth.

8. Do not block any ventilation

openings. Install in accordance
with the manufacturer’s
instructions.

9. Do not install near any heat

sources such as radiators,
heat registers, stoves, or other
apparatus.

10. Do not defeat the safety

purpose of the polarized or
groundingtype plug. A polarized
plug has two blades with
one wider than the other. A
grounding type plug has two
blades and a third grounding
prong. The wide blade or the
third prong are provided for your
safety. If the provided plug does
not fit into your outlet, consult
an electrician for replacement
of the obsolete outlet.

11. Protect the power cord

from being walked on or
pinched particularly at plugs,

The lightning flash with arrowhead symbol, within
an equilateral triangle, is intended to alert the
user to the presence of uninsulated “dangerous
voltage” within the product’s enclosure that may
be of sufficient magnitude to constitute a risk of
electric shock to persons. The exclamation point
within an equilateral triangle is intended to alert
the user to the presence of important operating
and maintenance instructions in the literature
accompanying the device.

convenience receptacles, and
the point where they exit from
the apparatus.

12. Only use attachments/

accessories specified by the
manufacturer.

13. Use only with the cart, stand,

tripod, bracket, or table
specified by the manufacturer,
or sold with the apparatus.
When a cart is used, use
caution when moving the cart/
apparatus combination to avoid
injury from tip-over.

14. Unplug this apparatus during

lightning storms or when
unused for long periods of time.

15. Refer all servicing to qualified

service personnel. Servicing is
required when the apparatus
has been damaged in any way,
such as power-supply cord or
plug is damaged, liquid has
been spilled or objects have
fallen into the apparatus, the
apparatus has been exposed
to rain or moisture, does not
operate normally, or has been
dropped.

Consignes de sécurité à lire attentivement

n’accepte pas la fiche, consulter

Le symbole de la flèche dans un triangle équilateral
symbolisant la foudre est prévu pour sensibiliser
l’utilisateur à la présence de tension de voltage
non isolée à l’intérieur de l’appareil. Elle pourrait
constituer un danger de risque de décharge élec­trique pour les utilisateurs. Le point d’excl mation
dans le triangle équilatérale alerte l’utilisateur de la
présence de consignes qu’il doit d’abord consulter
avant d’utiliser l’appareil.

1. Lisez ces instructions.

2. Conservez ces instructions.

3. Observez les avertissements.

4. Suivez ces instructions.

5. Pour réduire le risque de feu

ou la décharge électrique, ne
pas exposer cet appareil pour
pleuvoir ou l’humidité.

6. Ne pas utiliser l’appareil près de

l’eau.

7. Le nettoyer à l’aide d’un tissus

sec.

8. Ne pas bloquer les ouvertures

de ventilation, installer selon les
consignes du fabricant.

9. Eloigner des sources de chaleur

tel: radiateurs, fourneaux ou
autres appareils qui produisent
de la chaleur.

10. Ne pas modifier ou amputer

le système de la mise à terre.
Une prise avec mise à terre
comprend deux lames dont
une plus large ainsi qu’une mise
à terre: ne pas la couper ou
la modifier. Si la prise murale

WARNING: THIS APPARATUS MUST BE GROUNDED (EARTHED)

un électricien pour qu’il
remplace la prise désuète.

11. Protéger le cordon de secteur

contre tous bris ou pincement
qui pourraient l’endommager,
soit à la fiche murale ou à
l’appareil.

12. N’employer que les accessoires

recommandés par le fabricant.

13. N’utiliser qu’avec les systèmes

de fixation,chariots, trépied
ou autres, approuvés par le
fabricant ou vendus avec
l’appareil.

14. Débrancher l’appareil lors des

orages électriques ou si inutilisé
pendant une longue période de
temps.

15. Un entretient effectué par un

centre de service accrédité
est exigé si l’appareil a été
endommagé de quelque façon:
si il a été exposé à la pluie,,
l’humidité ou s’il ne fonctionne
pas normalement ou qu’il a été
échappé.

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FA Amplifier • Operating Manual

FCC Compliance

This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions:

■ This device may not cause harmful

interference

■ This device must accept any

interference received, including
interference that may cause undesired
operation

Note: This equipment has been tested
and found to comply with the limits for a
Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed
to provide reasonable protection against
harmful interference in both a commercial
and residential installation. This equipment
generates, uses and can radiate radio
frequency energy and, if not installed and
used in accordance with the instructions,
may cause harmful interference to radio
communications. However, there is no
guarantee that interference will not occur
in a particular installation. If this equipment
does cause harmful interference to radio or
television reception, which can be determined
by turning the equipment off and on, the user
is encouraged to try to correct the interference
by one or more of the following measures:

Unpacking

As a part of our system of quality control,
every Ashly product is carefully inspected
before leaving the factory to ensure flawless
appearance.

After unpacking, please inspect for any
physical damage. Save the shipping carton
and all packing materials, as they were
carefully designed to reduce to a minimum the
possibility of transportation damage should the
unit again require packing and shipping. In the
event that damage has occurred, immediately
notify your dealer so that a written claim to
cover the damages can be initiated.

The right to any claim against a public
carrier can be forfeited if the carrier is not
notified promptly and if the shipping carton
and packing materials are not available for
inspection by the carrier. Save all packing
materials until the claim has been settled.

About Ashly

Ashly Audio was founded in 1974 by a
group of recording engineers, concert sound
professionals, and electronics designers. The
first products were elaborate custom consoles
for friends and associates, but business quickly
spread to new clients and the business grew.

The philosophy we established from the
very beginning holds true today: to offer only
the highest quality audio tools at an affordable
cost to the professional user − ensuring
reliability and long life. Years later, Ashly
remains committed to these principles.

Ashly’s exclusive five-year, worry-free
warranty remains one of the most generous
policies available on any commercial- grade
product. The warranty covers every product
with the Ashly brand name, and is offered at no
extra cost to you.

Please read this entire manual to fully
understand the features and capabilities of this
product.

■ Reorient or relocate the receiving

antenna.

■ Increase the separation between the

equipment and receiver.

■ Connect the equipment into an outlet on

a circuit different from that to which the
receiver is connected.

■ Consult the dealer or an experienced

radio/TV technician for help.

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FA Amplifier • Operating Manual

Table of Contents

1 Introduction .................. 4

2 Requirements ................4

2.1 AC mains .......................... 4

2.2 Input wiring ...................... 5

2.3 Speaker wire .....................5

2.4 Remote control wire ......... 5

2.5 Mechanical ...................... 5

2.6 Cooling ............................ 6

3 Amplifier Protection ....... 6

4 Front Panel Features ......7

4.1 Level controls ................... 7

4.2 Status LEDs ...................... 7

4.3 Power Switch ................... 7

4.4 Model Number ................. 7

5 Rear Panel Features .......8

5.1 Maintenance .................... 8

5.2 DIP switches .................... 8

a. Lo-Z/Hi-Z ...................... 8

b. Hi-Z 70V/100V ............. 8

c. Input sensitivity ............ 8

d. Standby polarity............ 8

e. Front panel lock ............. 8

5.3 Utility Function Connector 9

a. Remote DC level control 9

b. Standby ........................ 9

c. Fault Logic Output ........ 9

5.4 Balanced Input ..................9

5.5 Speaker Outputs ................ 9

5.6 AC Mains ...........................9

6 Troubleshooting .......... 10

7 Specifications ....... 11-12

8 Warranty .................... 13

1 Introduction

Thank you for your purchase of this Ashly
FA power amplifier. This product uses state
of the art, light weight, high efficiency
switching technology developed through
years of design and testing. FA amplifiers are
available in two power levels, designed to
meet the most demanding live sound and fixed
installation sound systems in stadiums, arenas,
performance venues, restaurants, worship
spaces and conference centers.

1.2 Features

• 2 x 125W (half-rack), 4 x 125W (half-rack),

or 4 x 250W (full-rack)models

• Active power factor correction (PFC)

• Power-sharing on 125W models

• Low-Z or High-Z (70V/100V) output mode

per channel

• Euroblock input and output connectors

• Front panel soft-power switch

• Front panel level controls, fully off = mute

• Front panel status LED per channel for

signal, limit, mute, input clipping, protect

• Input sensitivity select: +4dBu or -10dBv

• Standby mode contact closure with normally

open/normally closed polarity switch

• Automatic sleep mode (non-defeatable)

• Front panel lock

• Remote DC level control per channel (2 channel

model), per channel pair (4 channel models)

• Protect mode fault logic output

• Universal 100-240VAC operation, 50-60Hz

• Detachable AC connector

• USB connector for firmware update

• Variable cooling fan

• Rack mount or table/wall mount kit available

for half-rack models

• Rear support kit available for all models

• Protection: Over-temperature, output short-

circuit/over-power, output DC, mains fuse

• Safety/Compliance: UL, CE, FCC Class B,

Energy Star®, RoHS

• Ashly five year warranty

2 Requirements

Before connecting to AC mains power,
make sure that the mechanical installation,
wiring, cooling requirements, and controls
are all set to the configuration needed for
your particular application. Failure to do so
could result in damage to the unit or to other
components in the system.

2.1 AC Mains Requirements

This amplifier will auto-detect AC mains voltage
from 100-240VAC, 50-60Hz. At nominal 120VAC
mains, the allowed operating range is 85­135VAC to allow for brownouts or power surges,
and for nominal 240VAC operation the range is
170-265VAC. Use only the provided AC cord to
connect to AC mains. The power consumption
is indicated on the back panel near the AC inlet.
To reduce the risk of ground loop hum, all sound
system ground references should originate at the
same AC power distribution point. Do not lift or

remove the amplifier power cord ground pin.

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