Ashly KLR 2000, KLR 4000, KLR 5000, KLR 3200 User Manual

KLR-Series Amplifiers

KLR 2000, KLR 3200, KLR 4000, KLR 5000

Operator Manual

Ashly Audio Inc.

847 Holt Road, Webster, NY 14580-9103

Toll Free [phone], Telephone [phone], FAX [phone]

www.ashly.com

All Trademarks referred to herein, are the property of their respective owners.

All Rights Reserved Rev 0.72110

Page - 2 Operator Manual – KLR Series Amplifiers

L

p

Important Safety
Instructions - 2

Introduction - 3

The KLR Series - 4

Physical Description - 5

Installation - 6

Troubleshooting - 10

Spec Table - 11

Warranty - 12

This manual uses a

Perpetual Table Of
Contents. Each page

has a copy of the
manual’s contents in a
gray box just like this
one. The section you are
in will always be bold
with the other sections
“grayed out.” The feature
allows you to jump
directly to another
section without having to
return to a Table Of
Contents page.

Important Safety Instructions
Consignes de sécurité à lire attentivement

This power amplifier can produce dangerous
output voltage, power and sound pressure
levels. In order to minimize the risk of injury,
damage, or hearing loss, please read the entire
owner’s manual.

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.

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 (including amplifiers)
that produce heat.

10. Do not defeat the safety purpose of the polarized or
grounding-type 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, 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.

e symbole de la flèche dans un triangle équilateral symbolisant la foudre est

révu 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’exclamation 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,

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

9. Eloigner des sources de chaleur tel: radiateurs,

10. Ne pas modifier ou amputer le système de la mise à

11. Protéger le cordon de secteur contre tous bris ou

12. N’employer que les accessoires recommandés par le

13. N’utiliser qu’avec les systèmes de fixation,chariots,

14. Débrancher l’appareil lors des orages électriques ou si

15. Un entretient effectué par un centre de service accrédité

Cet amplificateur de puissance peut produire un
voltage et une pression acoustique qui pourrait être
dangereuse ou pourrait meme causer des
problêmes ou perte accuité auditive. Consultez le
manuel d’instruction et observez les con signes.

ne pas exposer cet appareil pour pleuvoir ou l'humidité.

selon les consignes du fabricant.

fourneaux ou autres appareils qui produisent de la
chaleur.

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 n’accepte pas la
fiche, consulter un électricien pour qu’il remplace la prise
désuète.

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

fabricant.

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

inutilisé pendant une longue période de temps.

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.

Copyright© 2010 – Ashly Audio Inc.

Operator Manual – KLR Series Amplifiers Page - 3

Important Safety

Introduction

Congratulations on your purchase of an Ashly KLR-Series amplifier. The KLR-Series is
made up of powerful, high-efficiency, lightweight amplifiers incorporating the latest
technologies. We are confident that you will be pleased with the high performance, superb
sound quality, reliability, and more.

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. More than thirty years later, Ashly remains committed to these
principles.

Instructions - 2

Introduction - 3

About Ashly
FCC Compliance

The KLR Series - 4

Physical Description - 5

Installation - 6

Troubleshooting - 10

Spec Table - 11

Warranty - 12

FCC Compliance

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

1. This device may not cause harmful interference

2. This device must accept any interference received, including interference that may
cause undesired operation.

All Rights Reserved Rev 0.72110

Page - 4 Operator Manual – KLR Series Amplifiers

Important Safety
Instructions – 2

Introduction - 3

The KLR Series - 4

Protection

Physical Description - 5

Installation - 6

Troubleshooting - 10

Spec Table - 11

Warranty - 12

The KLR Series

KLR-Series amplifiers are high-efficiency, lightweight high power amplifiers incorporating
the latest amplifier technologies.

The series provides a power range of 1000 to 2500 watts per channel at 2 ohms (20Hz­20kHz, 1% THD). The KLR series is available in 2 channel versions at four power points.
All models will drive 2, 4, or 8 ohm loads.

KLR-Series Power Ratings (per channel)

Stereo Mono Bridged

Model 8Ω 4Ω 2Ω 4Ω
KLR 2000 350W 600W 1000W 2000W
KLR 3200 650W 1100W 1600W 3200W
KLR 4000 850W 1400W 2000W 4000W
KLR 5000 1000W 1700W 2500W 5000W

• Inputs are via 3-pin Euroblock, XLR, and ¼” TRS connectors.

• Switch mode power supply provides high efficiency and low weight

• Output connectors are Neutrik Speakon.

• Rear panel switches include: Gain and Operation Mode, Limiter, and HPF.

• Forced air cooled (front panel intake, rear panel exhaust)

• Front panel indicators for output level, clip/protect, and power on/off

• Gain selectable switch for both channels

• Removable dust filters on front panel

• Rack ears for permanent installation in a standard 2RU 19”(rack mount

width) enclosure

Protection

KLR-Series Amplifiers come standard with several protection circuits:

 Output over-current protection
 DC output protection
 Chassis internal temperature monitoring
 Inrush limiting
 Mains circuit breaker

Copyright© 2010 – Ashly Audio Inc.

Operator Manual – KLR Series Amplifiers Page - 5

Important Safety

Physical Description

Each model in the KLR-Series is 2RU. The model number is indicated on the left side of the
front panel

Amplifier Front Panel

Instructions – 2

Introduction - 3

The KLR Series - 4

Physical Description - 5

Front Panel
Rear Panel

Installation - 6

Troubleshooting - 10

Spec Table - 11

Warranty - 12

1. Mounting Holes – For rack mounting.

2. Air Inflow Vents – Cool air enters here.

3. Channel Attenuators – These knobs adjust

the attenuation of the input signal of each
channel from ∞ to 0.

4. Signal, Clip, and Protect LEDs – Indicates

output level of –30, -20, 0dB, Clip, and amplifier
protect.

5. Power Switch and LED – Switches the unit on

or off.

Amplifier Rear Panel

1. AC Cord – For connection to the AC mains

2. CH 2 Output Connector – This connector

provides the amplifier’s Channel 2 output.

3. CH 1, CH 2, Bridged Output Connector –

This connector provides the amplifier’s Channel
1, channel 1 and 2, or bridged output.

4. Air Outflow Vents – Warm air exits here.

5. Gain Switch – The Gain switch sets both

channel’s gain to 1V, 32dB, or 26dB sensitivity.

6. Mode Switch – This switch selects the

amplifier’s operating mode (Bridge, Stereo, or
Parallel Mono).

WARNING: Do not remove the mains connector ground.

7. 3-Pin Euroblock Input Connectors – These

connectors are used for balanced or
unbalanced input signals.

8. Combination XLR, 1/4” TRS Input
Connectors – These connectors are used for

balanced or unbalanced input signals.

9. Limiter Switch – This switch engages the

limiter. There is a separate limiter for each
channel.

10. HPF Switch – This switch selects the input

HiPass filter to 30Hz, 50Hz, or Off.

All Rights Reserved Rev 0.72110

Page - 6 Operator Manual – KLR Series Amplifiers

Important Safety
Instructions – 2

Introduction - 3

The KLR Series - 4

Physical Description - 5

Front Panel
Rear Panel

Installation – 6

Requirements
Installation Density

Typical Applications
Connectors & Polarity
Speaker Connections

Troubleshooting - 10

Spec Table - 11

Warranty - 12

Installation

KLR-Series amplifiers are designed for use in both fixed and mobile sound systems. Each
amplifier is shipped (unless otherwise specified) with the following factory settings:

Front panel: Rear panel:
On/Off Switch = Off
Attenuators = ∞

Before connecting to mains power, make sure that the switches are set to the configuration
needed for your particular application. Always switch the amplifier off before making any
changes to the settings. Failure to do so could result in damage to the unit or other components
in your system. CAUTION: When mounting or connecting the amplifier, always disconnect it
from the mains. Use four screws and washers when mounting the amplifier to the front rack

High Pass Filter(s) = Off
Gain Selector = +26 dB
Mode Selector = Stereo
Limiter Switch = Off

rails. Rear support is also recommended, especially for mobile or touring use. To reduce the
risk of fire or electric shock, do not expose this apparatus to rain or moisture.

Requirements

KLR-Series amplifiers have specific physical, electrical and signal requirements for proper
operation. These requirements will vary depending on your specific application, setup, and
the settings on the amplifier. When setting up and testing your system, please take special
care to double check all connections and settings. Please refer to the specifications section
of this manual for specific input, output and other figures.

Installation Density

KLR-Series amplifiers produce substantial power output from a small chassis. When
driven at the higher-end of their potential, they do produce heat that must be dissipated. In
cases where multiple KLR amplifiers are mounted together (or a single KLR with other
equipment), it is recommended that a 1RU space is left between units to allow for proper
air circulation. If the amplifier overheats, it will go into ‘thermal’ protect mode to prevent
damage to itself and any connected components and speakers.

Copyright© 2010 – Ashly Audio Inc.

Operator Manual – KLR Series Amplifiers Page - 7

Typical Applications

The most common use of a KLR-Series amplifier is a 2-channel source driving 2 speaker
channels. In this illustration, the amplifier is receiving a stereo signal and is driving two
stereo speakers. The amplifier is in STEREO mode.

Important Safety
Instructions – 2

Introduction - 3

The KLR Series - 4

Physical Description - 5

Installation – 6

Requirements
Installation Density

Typical Applications

Connectors & Polarity

Speaker Connections

Troubleshooting - 10

Spec Table - 11

Warranty - 12

Another use of a KLR-Series amplifier is a single channel source driving both speaker
channels. In this illustration, the amplifier is receiving a signal and is driving both channel
speakers with the same signal. The amplifier is in PARALLEL mode.

KLR-Series amplifiers are well suited to BRIDGED operation to drive a speaker load such
as a subwoofer. This illustration shows a KLR driving a signal in BRIDGED mode. Note
the special wiring to the channel 1 connector for Bridge mode. Minimum Bridged load
impedance is 4Ω (2Ω per channel).

All Rights Reserved Rev 0.72110

Page - 8 Operator Manual – KLR Series Amplifiers

Important Safety
Instructions – 2

Introduction - 3

The KLR Series - 4

Physical Description - 5

Installation – 6

Requirements
Installation Density
Typical Applications

Connectors & Polarity

Speaker Connections

Troubleshooting - 10

Spec Table - 11

Warranty - 12

Connectors & Polarity

KLR-Series amplifiers utilize three types of professional audio connectors. For the inputs,
3-pin Euroblock connectors are utilized with their polarity clearly marked on the
amplifier’s rear panel, and combination XLR and 1/4” phone jack are all wired in parallel.
Outputs are via Speakon connectors. The polarity for these connections is marked on the
unit’s chassis. Note that polarity changes when the unit is operated in BRIDGED mode.
Be sure to read the Operation section of this manual for important information on the
operating modes.

Copyright© 2010 – Ashly Audio Inc.

Operator Manual – KLR Series Amplifiers Page - 9

Speaker Connections

Stereo Speaker Wiring

In this mode, the amplifier’s channels operate fully independent of each other. Each signal
enters the unit and is amplified separately and wired using different connectors.

Important Safety
Instructions – 2

Introduction - 3

The KLR Series - 4

Physical Description - 5

Installation – 6

Requirements
Installation Density
Typical Applications
Connectors & Polarity

Speaker Connections

Troubleshooting - 10

Spec Table - 11

Warranty - 12

Stereo Speaker Wiring Using Single 4-Conductor Speaker Cable

In this mode, the amplifier’s channels still operate independent of each other. Each signal is
amplified separately, however both channels are wired using the Channel 1 connector.

Bridged (Mono) Mode

In this mode, a single input is connected to channel 1 and is connected to the two output
channels that have been “Bridged” together using the Channel 1 connector. Minimum
Bridged load impedance is 4Ω.

All Rights Reserved Rev 0.72110

Page - 10 Operator Manual – KLR Series Amplifiers

Important Safety
Instructions – 2

Introduction - 3

The KLR Sries - 4

Physical Description - 5

Installation – 6

Troubleshooting - 10

Spec Table - 11

Warranty - 12

Troubleshooting

Situation Indication Action

No Sound

No Channel
Separation

Distorted Sound

Hiss Hiss Unplug the amplifier input to confirm that the

Squeals and
Feedback

Signal LED not lit
Clip LEDs not lit

Signal LED not lit Make sure the signal source is operating and

Signal LEDs responding to signal level Check the speaker wiring for breaks.

Protect LED is lit Overheating will cause protective muting.

No Channel Separation Check the mode indicators on the back panel

Power LED is lit A faulty speaker or a loose connection could

Signal LEDs responding to signal level The signal source might be clipping. Keep the

Clip LEDs not lit Keep the volume pots at least halfway up and

Squeals and Feedback Microphone feedback should be eliminated

Check AC plug. Confirm that AC outlet works
by plugging in another device.

try another cable. Check position of Volume
Pots.

Try another speaker and cable.

Check for proper ventilation.

and make sure the mode selector on the rear
panel is in the stereo position. Make sure
other equipment in the signal path such as
mixers and preamps are set for stereo, not
mono

cause this. Check the wiring and try another
speaker.

volume pots at least halfway up so that the
source does not have to be overdriven.

try changing input sensitivity with the gain
selector on the rear.

hiss is coming from the source or from a device
upstream. Erratic or popping noises indicate an
electronic fault in the offending unit. To keep
the noise floor low, operate the primary signal
source at full level, without clipping. Avoid
boosting the signal further between the source
and the amplifier.

with mixer controls. If noise continues to build
up with no microphone gain, there is a serious
fault in the signal processors or cables.
Working in succession from the signal source
towards the amplifier and check each device in
the signal path by reducing its gain or by
unplugging it.

Copyright© 2010 – Ashly Audio Inc.

Operator Manual – KLR Series Amplifiers Page - 11

Important Safety

Spec Table

KLR 2000 KLR 3200 KLR 4000 KLR 5000

Power Output Per Channel
Stereo Mode, both channels driven

8Ω, 20 Hz - 20 kHz, 1% THD 350W 650W 850W 1000W
4Ω, 20 Hz - 20 kHz, 1% THD 600W 1100W 1400W 1700W
2Ω, 20 Hz - 20 kHz, 1% THD 1000W 1600W 2000W 2500W
Bridged Mono Mode
4Ω, 20 Hz - 20 kHz, 1% THD 2000W 3200W 4000W 5000W

Line Current Draw (all channels driven @4Ω)

Idle (120VAC 60Hz) 0.99A 0.92A 1.05A 1.14A
1/8th Power Pink Noise (120VAC 60Hz) 9.7A 11.4A 14.0A 17.5A
1/3 Power Sine Wave (120VAC 60Hz) 14.9A 16.6A 19.8A 24.7A

Thermal Dissipation (all channels driven @4Ω)

Idle (BTU/hr) 164 136 171 215
1/8th Power Pink Noise (BTU/hr) 1876 2063 2489 3111
1/3 Power Sine Wave (BTU/hr) 2880 3001 3516 4395
Voltage Gain (rated output power @4Ω) 31dB 33dB 36dB 37dB

Signal to Noise Ratio

(20Hz-20kHz, rated power @ 8Ω unweighted)

Output Circuitry: Class AB Class AB 2 Step Class H 2 Step Class H
Frequency Response 1W @ 8Ω 20Hz-20kHz

(-3dB down point)

Damping Factor – 100Hz @ rated power @8Ω > 380
THD 20Hz-20kHz, 10dB below rated output @4Ω <0.05%
Input Impedance 12 kΩ, balanced
HPF (30Hz, 50Hz, Off) 12dB/Oct

Amplifier Protection Output Overcurent, DC Output, Chassis Temperature, Mains Breaker

Cooling Variable Speed Fan, Front to Rear Air Flow
Front Panel Indicators Prot/Clip, Signal, Power
Attenuators Per channel: front panel
Input Connectors, each channel 3- Pin Euroblock, XLR, ¼” TRS Phone Jack
Output connectors, each channel Speakon

Operating Temperature/Humidity Temperature: -10C - +40C / Humidity: 0% - 90%

Power Cable Connector 3-Prong NEMA 5-15
Dimensions 19” x 3.5” x 16” (482mm x 88mmx x407mm)
Weight 24 lbs (10.9kg) 26.4 lbs (12kg) 26.7 lbs (12.1kg) 27.4 lbs (12.4kg)

All Specifications Subject to Change or Improvement Without Notice.

>108 dB >109 dB >109 dB >110 dB

+/- 0.3dB

5Hz – 70kHz

Instructions – 2

Introduction - 3

The KLR Series - 4

Physical Description - 5

Installation – 6

Troubleshooting - 10

Spec Table – 11

Warranty - 12

All Rights Reserved Rev 0.72110

Page - 12 Operator Manual – KLR Series Amplifiers

Important Safety
Instructions – 2

Introduction - 3

The KLR Series - 4

Physical Description - 5

Installation – 6

Troubleshooting - 10

Spec Table - 11

Warranty - 12

Ashly Audio Inc. LIMITED WARRANTY (USA ONLY)

(Other countries please contact your respective distributor or dealer.)
For units purchased in the USA, warranty service for this unit shall be provided by ASHLY AUDIO,

INC. in accordance with the following warranty statement.
ASHLY AUDIO, INC. warrants to the owner of this product that it will be free from defects in

workmanship and materials for a period of FIVE years from the original-date-of-purchase. ASHLY
AUDIO INC. will without charge, repair or replace at its discretion, any defective product or component
parts upon prepaid delivery of the product to the ASHLY AUDIO, INC. factory service department,
accompanied with a proof of original-date-of-purchase in the form of a valid sales receipt. This warranty
gives you specific legal rights, and you may also have other rights, which vary from state to state.

EXCLUSIONS: This warranty does not apply in the event of misuse, neglect, or as a result of
unauthorized alterations or repairs made to the product. This warranty is void if the serial number is
altered, defaced, or removed. ASHLY AUDIO, INC. reserves the right to make changes in design, or
make additions to, or improvements upon, this product without any obligation to install the same on
products previously manufactured.

Any implied warranties, which may arise under the operation of state law, shall be effective only for
FIVE years from the original-date-of-purch ase of the product. ASH LY AUDIO, INC. shall b e obligated
to only correct defects in the product itself. ASHLY AUDIO, INC. is not liable for any damage or
injury, which may result from, or be incidental to, or a consequence of, such defects. Some states do not
allow limitations on how long an implied warranty lasts, or the exclusion, or limitation of incid ental or
consequential damages, so the above limitations or exclusions may not apply to you.

OBTAINING WARRANTY SERVICE:
For warranty service in the United States, please follow this procedure:

1) Return the product to ASHLY AUDIO, INC. freight prepaid, with a written statement describing the
defect and application that the product is used in. ASHLY AUDIO, INC. will examine the product and
perform any necessary service, including replacement of defective parts, at no further cost to you.

2) Ship your product to:
ASHLY AUDIO, INC.
Attention: Service Department
847 Holt Road
Webster, NY 14580-9103

Copyright© 2010 – Ashly Audio Inc.