Ashly Audio TRA-2075, TRA-4075, TRA-2150, TRA-4150 Users Guide

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Page 1

TRA-Series Amplifier

Operating Manual

Ashly Audio Inc.

847 Holt Road, Webster, NY 14580-9103

Toll Free (800) 828-6308, Telephone (585) 872-0010, FAX (585) 872-0739

www.ashly.com

All Trademarks referred to herein, are the property of their respective owners. (R8 0816)

Page 2

Page - 2 Operator Manual – TRA Series Amplifiers

Important Safety Instructions - 2

Introduction - 3

The TRA Series - 4

Physical Description - 5

Installation - 6

Operation - 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 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.

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’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.

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 consignes.

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. N’employer que les accessoires recommandés par le 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.

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Operator Manual – TRA Series Amplifiers Page - 3

Important Safety

Introduction

Congratulations on your purchase of an Ashly TRA-Series amplifier. The TRA-Series is made up of high-efficiency, 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.

Ashly’s exclusive Five Year, Worry- Free Warranty remains one of the most liberal 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, our customer.

Instructions - 2

Introduction - 3

About Ashly Safety FCC Compliance

The TRA Series - 4

Physical Description - 5

Installation - 6

Operation - 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 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.

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:

- 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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Page - 4 Operator Manual – TRA Series Amplifiers

Important Safety Instructions – 2

Introduction - 3

The TRA Series - 4

Protection

Physical Description - 5

Installation - 6

Operation - 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

The TRA Series

TRA-Series amplifiers are high-efficiency, amplifiers incorporating the latest amplifier technologies.

The series provides a power range of 75 to 150 watts per channel at 4 ohms (20Hz-20kHz, 1% THD). The TRA series is available in 2 and 4 channel versions at two power points. All models will drive 4 or 8 ohm loads as well as 25V, 70V, and 100V constant voltage lines. All models are 2RU, with the two and four channel versions weighing 19.5 pounds and 29.5 pounds respectively. All TRA amplifiers utilize a state-of-the-art, efficient, high speed switched mode power supply and offer remote power on/off among the standard features.

TRA-Series Power Ratings (per channel)

Stereo Constant Voltage

Model 8Ω 4Ω 25/70V/100V

TRA-2075 40 W 75 W 75 W TRA-4075 40 W 75 W 75 W TRA-2150 80 W 150 W 150 W TRA-4150 80 W 150 W 150 W

Input connections are via 3-pin Euroblock connectors.

Output connectors are screw terminal strips.

Controls on the rear panel include: Gain and channel attenuation.

Protection

TRA-Series Amplifiers come standard with several protection circuits:

 Output over-current protection - The output current is limited to safe levels

regardless of load.

 DC output protection - The amplifier is switched off if more than 2 volts of

dc is present on the output. The amplifier will automatically restart after 5 seconds (if no fault remains). The protect LED is lit as well as the clip LED of the affected channel(s).

 Main supply rail overvoltage protection - The amplifier is switched off if

the main supply rails have too high of a voltage. The amplifier will automatically restart after 5 seconds (if no fault remains). The protect LED is lit as well as the clip LED of the affected channel(s).

 Chassis internal temperature monitoring - The amplifier is switched off

when the internal ambient temp reaches 70º C. The amplifier will again switch on when the internal ambient temp reaches 55º C. The protect LED is lit as well as the clip LED of ALL channels.

 Inrush limiting - The turn-on current is limited. This is active during initial

startup as well as when exiting standby mode.

 Mains fuse - There is a 5 amp time delay fuse.

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Operator Manual – TRA Series Amplifiers Page - 5

Important Safety

Physical Description

TRA-Series models generally have the same physical design, though there are obvious differences between two and four channel versions. The model number is indicated on the left side of the front panel

Amplifier Front Panel

21 3 4 5

1. Mounting Holes – For rack mounting.

2. Power Switch – Switches the unit on or off

3. Status LEDs – Indicate status of Power, Standby, and Protect

4. Air Vents

Amplifier Rear Panel

5. Channel LEDs – The Sig LED will begin to light when the output voltage reaches approximately 0.3 volts. When clipping occurs the Clip LED will light.

Instructions – 2

Introduction - 3

The TRA Series - 4

Physical Description - 5

Front Panel Rear Panel

Installation - 6

Operation - 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

1. 3-Pin Euroblock Input Connectors – These connectors are used for all input signals.

2. Gain Switch – sets the amplifier gain to +36dB or +26dB sensitivity.

3. Channel Attenuators – These knobs adjust the attenuation of the input signal of each channel from  to 0.

Items 1-4 are identical on all channels of all TRA-Series amplifiers, 2 or 4 channel.

4. Standby Connector – This 2-Pin Euroblock connector provides for remote standby switching. The Power switch must be in the On position for the Standby connector to be active.

5. Delay Switches – These switches provide turn on delay when the Standby connector is used. The switches are additive, providing as much as 7.5 seconds of delay

6. Screw Terminal Output Connectors – These connectors provide the output signal for each channel. The positive 4/8  (+) and negative () connectors should be used for low-impedance applications. For constant voltage 70V or 100V applications, connect the negative wire (-) of your system to the C (common) terminal and the positive (+) wire to the appropriate Constant Voltage output. For 25V, wire as shown.

7. Mains Connector - Connection to the mains is via this 3-Prong IEC connector

WARNING: Do not remove the mains connector ground.

Page 6

Page - 6 Operator Manual – TRA Series Amplifiers

Important Safety Instructions – 2

Introduction - 3

The TRA Series - 4

Physical Description - 5

Front Panel Rear Panel

Installation – 6

Requirements

Typical Applications Connectors & Polarity

Operation - 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

Installation

TRA-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 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.

Gain Selector = +26 dB

Requirements

TRA-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.

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Operator Manual – TRA Series Amplifiers Page - 7

Typical Applications

TRA-Series amplifiers offer many output options. In this illustration, the 4-channel amplifier is receiving two stereo signals and is driving two pairs of stereo speakers.

Important Safety Instructions – 2

Introduction - 3

The TRA Series - 4

Physical Description - 5

Installation – 6

Requirements

Typical Applications Connectors & Polarity

Operation - 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

TRA-Series amplifiers are specifically designed to drive transformer isolated 25V, 70V, or 100V constant voltage (CV) lines. This illustration example shows a 4 channel TRA driving a 70V CV line and 25V line (with two channels still available). Always make sure that the total wattage draw from all the speakers on a CV line does not exceed the rated output of the channel to which they are connected.

Connectors & Polarity

TRA-Series amplifiers utilize professional euroblock audio connectors. For the inputs, 3pin Euroblock connectors are utilized with their polarity clearly marked on the amplifier’s rear panel. Outputs are also euroblock connectors, with polarity clearly marked on the chassis.

NOTE: It is possible to simultaneously drive loads connected to the 8/4 ohm output AND the 25/70/100 volt outputs of a particular amplifier channel. However, care must be taken to ensure that the combined load is not less that the 4 ohm maximum. If you are unsure as to how to determine the combined load, please contact Ashly.

Page 8

Page - 8 Operator Manual – TRA Series Amplifiers

Important Safety Instructions – 2

Introduction - 3

The TRA Series - 4

Physical Description - 5

Installation – 6

Operation – 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

Operation

The amplifier’s On/Off Switch is a rocker-type switch located on the left side of the front panel. Turning on the amplifier initiates start-up by activating the inrush current limiter.

When using the remote On/Off function, the main On/Off switch must remain in the On position. See page 11 for more information on remote On/Off connections.

NOTE: The power switch does NOT isolate the appliance from mains. Make sure the mains power socket or an alternative disconnect device is near by and easily accessible. When the product is connected to mains, the line-filter and the input of the fuse are energized.

Page 9

Operator Manual – TRA Series Amplifiers Page - 9

Important Safety

Troubleshooting

Situation Indication Action

No Sound

No Channel Separation

Distorted Sound Power LED is lit

Hiss Hiss Unplug the amplifier input to confirm that the hiss is

Squeals and Feedback

Signal LED not lit Clip LEDs not lit

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

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

Signal LEDs show red (Protect Mode) Overheating will cause protective muting. Check for

No Channel Separation Check the mode indicators on the front panel and make

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

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

Squeals and Feedback Microphone feedback should be eliminated with mixer

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

cable. Check position of channel attenuators.

Try another speaker and cable.

proper ventilation.

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

faulty speaker or a loose connection could cause this.

Check the wiring and try another speaker.

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

changing input sensitivity with the gain selector on the rear.

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.

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.

Instructions – 2

Introduction - 3

The TRA Series - 4

Physical Description - 5

Installation – 6

Operation – 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

Page 10

Page - 10 Operator Manual – TRA Series Amplifiers

Important Safety Instructions – 2

Introduction - 3

The TRA Series - 4

Physical Description - 5

Installation – 6

Operation – 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

Spec Table

Power Output Per Channel 8 ohms, 80 Hz - 20 kHz, 1% THD 40 W 40 W 80 W 40 W 4 ohms, 80 Hz - 20 kHz, 1% THD 75 W 75 W 150 W 150 W 25V/70V/100V CV, 80 Hz - 20 kHz, 1% THD 75 W 75 W 150 W 150 W

Line Current Draw (all channels driven @4Ω)

Standby 37mA 39mA 89mA 102mA Idle 320mA 565mA 370mA 660mA 1/8th Power Pink Noise 0.70A 1.25A 1.10A 1.95A 1/3 Power Sine Wave 1.23A 2.25A 2.10A 3.80A

Thermal Dissipation (all channels driven @4Ω)

Standby (BTU /hr) 13 15 14 23 Idle (BTU/hr) 61 113 72 137 1/8th Power Pink Noise (BTU/hr) 73 145 111 211 1/3 Power Sine Wave (BTU/hr) 85 150 126 263 Signal to Noise (20 Hz-20 kHz, unweighted): Voltage Gain: 26 dB, 36 dB sensitivity (selectable) Output Circuitry: Class D Class D Class D Class D

Frequency Response 80 Hz - 20 kHz –3dB +/- 1.0 dB (due to internal 80 Hz HPF) Distortion (SMPTE, typical) < 0.5% - 8Ω load, 10dB below rated power Distortion (THD-N, typical) < 0.5% - 8Ω load, 10dB below rated power, 20Hz-20kHz Damping Factor - 8 ohm load, < 1 kHz > 200 into 8Ω Input Impedance 20 kΩ, balanced Maximum Input Level: +21 dBu Input Impedance 20kΩ balanced Cooling Convection Front Panel Indicators per channel Clip & Signal Front Panel Indicators overall power, standby, protect Attenuators Per channel: front panel Input Connectors, each channel 3- Pin Euroblock Output connectors, each channel Screw terminals

mplifier Protection Output Overcurent, DC Output, Mail Supply Rail Overvoltage

Power Cable Connector 3-Prong IEC Dimensions 19” x 3.5” x 12” (483mm x 89mm x 305mm) Net Weight 19.5 lbs (8.85kg) 29.5 lbs (13.4kg) 19.5 lbs (8.85kg) 29.5 lbs (13.4kg)

All Specifications Subject to Change or Improvement Without Notice.

TRA-2075 TRA-4075 TRA-2150 TRA-4150

>100 dB >100 dB >103 dB >103 dB

Chassis Temperature, Inrush Limiting, Mains Fuse

Page 11

Operator Manual – TRA Series Amplifiers Page - 11

Important Safety

Amplifier Dimensions

All TRA Series amplifiers share the same dimensional measurements:

Instructions – 2

Introduction - 3

The TRA Series - 4

Physical Description - 5

Installation – 6

Operation – 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

Remote Power Connections

Page 12

Page - 12 Operator Manual – TRA Series Amplifiers

Important Safety Instructions – 2

Introduction - 3

The TRA Series - 4

Physical Description - 5

Installation – 6

Operation – 8

Troubleshooting - 9

Spec Table - 10

Dimensions - 11

Warranty - 12

Ashly Audio Inc. Limited Warranty (USA ONLY)

(For other countries, please contact your respective distributor or dealer from where the unit was first purchased.)

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, with the exception of touch-screen displays and motorized faders which are warrantied for THREE 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 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 (THREE years for touch-screen displays or motorized faders) from the original date of purchase of the product. ASHLY AUDIO, INC. shall be 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 defect. Some states do not allow limitations on how long an implied warranty lasts, or the exclusion, or limitation of incidental 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. Attn: Service Department 847 Holt Road Webster, NY 14580-9103