ProSound 800 Manuel utilisateur

www.maplin.co.uk

Prosound 800, 1000, 1600 Professional

Power Amplifier Manual

www.maplin.co.uk

Unpacking and Inspection

Carefully unpack the unit. If it appears damaged in any way, return it to the dealer it was purchased from

in its original packaging. Maplin cannot accept any responsibility for damage arising from the use of non-

approved packaging.

Service

All ProSound products are thoughly examined and tested before leaving the factory, and if a correctly used

will give many years of excellent service. However, if a problem arises, proceed as follows:

A) Contact the retailer from whom the unit was purchased and describe the symptoms of the fault.

B) If the retailer cannot help, return the equipment to the national distributor for your country. Use the

original packaging to protect the product from damage. Include a note with the equipment stating

your name and address, details of the problem, Date Code, date and place of purchase.

The unit does not contain any user serviceable parts. For details of spares, accessories and other

products, contact you local retailer. In the event of any difficulty contact ProSound directly via

www.maplin.co.uk

Compliance

This equipment is designed to comply with the following standards:

BS EN55103-1:1996

BS EN55103-2:1997

BS EN60065:2002

Malin Electronics constantly seeks ways to enhance our products, and improvements take place continu-

ally. Whilst every effort is made to produce up to date literature, Malin Electronics limited reserve the right

to alter specifications without prior notice.

- 9 -

Status

Problem

Cure

Power LED is off

No mains or blown fuse

Check mains connections, check switch set to ‘on’ (at socket & amp),

check mains breaker or RCD, replace fuse (See manual for

IMPORTANT SAFETY INFORMATION)

Protect LED is on

Outputs short circuit, or low

impedance load

Check all output connections and total speaker impedance. For stereo

mode, minimum 4per channel, for bridge mode minimum 8. When

problem is cleared press RESET button. DO NOT ATTEMPT TO

HOLD THE RESET BUTTON IN TO DEFEAT ITS PURPOSE !

Temp LED is on

Amp is overheating

Ensure vents are clear, with free airflow front & rear. Ensure signal is

not clipped at amp input or source output. Amp will resume normal

operation after 3-5 minutes.

Bridge LED is on

Amp is in bridge mode with

stereo outputs in use

Use bridge output only (minimum 8) in bridge mode

IF YOUR AMP STOPS WORKING ;

•Turn volume to zero on both channels

• Check all connections (input and output, at both ends of cable)

• Check status lights on front panel

• Disconnect from mains before changing fuse

• Replace fuse only with same type and rating

• If problems persist contact a qualified service agent

• READ THE MANUAL !

At the end of its serviceable life, this product should not be treated as household or general waste. It should be

handed over to the applicable collection point for the recycling of electrical and electronic equipment, or returned

to the supplier for disposal.

1. All electrical and electronic equipment without batteries

WEEE Directive & Product Disposal

This symbol on the battery indicates that the battery is to be collected separately.This battery is designed for

separate collection at an appropriate collection point.

2. electrical and electronic equipment that are supplied

with batteries (including internal batteries)

WEEE Directive & Product Disposal

Internal / Supplied Batteries

At the end of its serviceable life, this product should not be treated as household or general waste. It should be

handed over to the applicable collection point for the recycling of electrical and electronic equipment, or

returned to the supplier for disposal.

3. Batteries

Notice to customers

This symbol on the battery indicates that the battery is to be collected separately.

The following apply only to users in European countries.

This battery is designed for separate collection at an appropriate collection point. Do not dispose of as household

waste.

For more information, contact the retailer or local authorities in charge of waste management.

Amp care bullet points.

1. Read the manual ; understand the operation, limitations and safety instructions before using the

product

2. Use good quality cables of the correct type, in the correct sockets

3. Listen to your sound ; if it’s distorted, reduce gain, volume or both

4. Use adequate amplification and speakers for your needs

5. Checks the mains supply in the venue ; use a mains checker e.g. Maplin product WD53H

6. Ensure your amp, speakers and all cables are free from damage

7. Protect your amp from moisture, smoke/fog machines and glitter cannons

8. Make and check all connections before you switch on

9. Set amp volume to ‘0’ at switch on. Slowly turn up, checking all speakers are working. If there are

problems turn the amp off and resolve them

DO NOT

1. Prevent airflow to your amp ; ventilation is required front and rear

2. ‘Daisy chain’ speakers. Run a maximum of 1x4 Ohm speaker or 2x8 Ohm speaker per amp channel.

3. Run amplifiers with the clip or limit lights on constantly

4. Send a clipped or overdriven signal from your mixer or source to the amp

5. Store your amp or speakers in a damp environment

6. Overload mains sockets ; Never run more than 1500W of amplifiers, lights or other electronic

equipment from one plug socket

7. Connect 2 amp channels, or 2 different amps to one speaker

8. Short circuit or cross-connect an amps inputs or outputs

FOLLOW THE SIGNAL PATH !

• Source output to mixer/preamp input (shielded signal cable),

• Mixer/preamp output to power amp input (shielded signal cable),

• Power amp output to speaker input (unshielded speaker cable).

- 1 -

TECHNICAL SPECIFICATION

- 8 -

Model 800 1000 1600

Stereo mode, 2 x 8Ω

load

150W×2

Max power

800W max@8Ω 1000W max@8Ω1600W max@8Ω

200W × 2 250W × 2

Stereo mode, 2 x 4Ω

load

2 x 300W 2 x 400W 2 x 500W

Rated Output Power (RMS)

Bridge mode, 1 x 8Ω

load

400W x 1 500W x 1 800W x 1

Frequency range 20 Hz - 20kHz

THD >0.5% >0.1 %

Frequency response R

= 8Ω, Po = 1 W 0 dB, +0.5 dB, -1 dB f = 20Hz-20kHz

Channel separation ≥70 dB

S/N: 20 Hz-20 kHz >90 dB

Damping factor , R

= 8Ω, 1 kHz ≥200

Input sensitivity at rated power 0dBu

Input impedance 30KΩ／balanced, 15KΩ／unbalanced

POWER switch

2 x channel level knob

Front panel

Reset switch

Controls

Rear panel Stereo/Bridge mode switch

2 x &quarter; inch Jack (unbalanced)INPUT

2 x XLR (balanced)

Connections

OUTPUT 3 x Speakon

Power ON 1 x blue LED

Protect engaged 1 x red LED

Over temperature 1 x Orange LED

Signal Clip 2 x Green LED

Signal level 2 x VU Meters

Status Indicators

Bridge mode 1 x green LED

Amplifier protection Over-temperature, short circuit, output DC,

high frequency and over load protection.

Cooling Variable speed brushless fan

120 V, 60 Hz (USA & Canada)

230 V, 50 Hz (Europe)

AC Power supply (factory set)

240V, 50Hz (Australia)

Dimension 485(w)×88(h)×400(d)mm (inc. handles) 19×2U×9

Weight 11.8kg 13.5kg 15.8kg

TROUBLESHOOTING

- 7 -

- 2 -

IMPORTANT SAFETY INSTRUCTIONS

INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK OR INJURY TO PERSONS

WARNING - Using electric product, basic precautions should always be followed, including the following:

1. Read all the SAFETY INSTRUCTIONS before using the product.

2. To reduce the risk of injury, close supervision is necessary when the product is used near children.

3. Do not use this product near water - for example, near a bathtub, washbowl, kitchen sink, in a wet

basement or near a swimming pool or the like.

4. This product is capable of producing sound levels that could cause permanent hearing loss. DO NOT

operate for a long period of time at high volume or at a level that is uncomfortable. If you experience any

hearing loss or ringing in the ears, you should consult an audiologist.

5. This product should be located so that its location or position does not interfere with its proper ventilation.

6. This product should be located away from heat sources such as radiators, heat registers or other

products that produce heat.

7. The product should be connected to a power supply only of the type described on the operating instruc-

tions or as marked on the product. Always ensure that a good quality mains lead is used applicable for your

country. The following wiring convention is used in all product mains leads, and must be strictly observed:

Green & Yellow = Earth. Brown = Live. Blue = Neutral. IMPORTANT: THIS UNIT MUST BE EARTHED!

8. This product may be equipped with a polarized line plug (one blade wider than the other). This is a safety

feature. If you are unable to insert the plug into the outlet, contact an electrician to replace your obsolete

outlet. DO NOT defeat the safety purpose of the plug.

9. If the mains fuse need replacing, DISCONNECT THE PRODUCT FROM THE MAIN SUPPLY. The fuse

is below the mains IEC socket, an must be replaced with a fuse of the type and rating stated on the rear

panel. If a replacement fuse fails immediately, contact your local service agent. DO NOT replace with a

higher value.

10. The power-supply cord of the product should be unplugged from the outlet when left unused for a long

period of time. When unplugged the power-supply cord, DO NOT pull on the cord, but grasp it by the plug.

11. Ensure the mains isolation switch is readily accessible when the product is in use.

12. Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through

openings.

13. The product should be serviced by qualified service personnel when:

A. The power-supply cord or the plug has been damaged; or

B. Object have fallen, or liquid has been spilled into the product; or

C. The product has been exposed to rain; or

D. The product does not appear or operate normally or exhibits a marked change in performance; or

E. The product has been dropped or the enclosure damaged.

14. DO NOT attempt to service the product beyond that described in the user-maintenance instructions. All

other serving should be referred to qualified service personnel.

15. WARNING - DO NOT place objects on the product’s power cord or place it in a position where anyone

could trip over, walk on or roll anything over it. DO NOT allow the product to rest on or to be installed over

power cords of any type. Improper installations of this type create the possibility of fire hazard and/or

personal injury.

SAVE THESE INSTRUCTIONS

FAULT

PROBLEM

SOLUTIONS

AC supply not connected or

switched off.

Check AC connections and switches.

No sound

(Power LED off)

Blown fuse

Check and replace fuses at plug and IEC

socket. USE ONLY SAME TYPE AND

RATING !

No input, or input too low

Check input is connected, and VU meters

are showing adequate signal present.

Level controls set too low

Increase level controls

No sound

(Power LED on)

Speakers faulty or not

connected

Check speakers and speaker connections

No sound

(Protect LED on)

Speaker outputs short circuited,

or low impedance load

connected.

Check all output connections, and check

speaker load total impedance. Press reset

button when problem is cleared.

No sound (Temp

LED on)

Amp has overheated

Turn levels to minimum and allow to cool for

5 minutes. Check front and rear vents are

not blocked, check input level is not causing

clip lights to illuminate.

Noise from AC supply is being

picked up in the signal path

Use good quality, shielded signal cables and

ensure they are kept away from AC power

cables and other AC powered equipment.

Hum or buzz is

audible

There is an earth problem

Use a mains tester to ensure the AC outlet

has a good earth. Power connected

equipment (e.g mixer and amp) from the

same AC outlet where possible.

Excessive signal level

somewhere in signal chain.

Use the VU meters to ensure the input level

to the amp is at the correct level. Check

levels at mixer or source

Distortion is

audible

Damaged or poor quality

cables

Use only high quality cables of the

appropriate type, protect them from damage

and regularly check connections.

Sound cuts out

or is intermittent

Damaged or poor quality

cables or connectors,

connectors not properly

inserted, amp overheating

Check all cables and connections, refer to

above sections regarding distortion and

temp warning light.

Prosound 800, 1000, 1600 Professional

Power Amplifier Manual

INTRODUCTION

The PROSOUND series of amplifiers are fully featured rack mount professional power amps, designed

to provide high quality, reliable performance for all professional applications from live bands to club

installations.

MAIN FEATURES

• Class AB design for high reliability and low distortion

• Cooling path is designed to prevent dust and dirt build up inside the amplifier, preventing PCB damage

and maintaining maximum cooling effect for greater reliability in operation

• Variable speed, brushless fan to improve cooling, reduce noise and increase fan life.

• Comprehensive protection circuitry protects the amp from over-current, short circuit, over-temperature,

DC and high frequency problems to prevent down time for repairs.

• Over-engineered power supplies for improved depth and dynamic response.

INSTALLATION GUIDELINES

• Do not use these amplifiers in damp or high humidity environments. Do not use outdoors, or anywhere

where liquids could fall or splash onto the amplifier.

• Ensure the amp is adequately ventilated, with free airflow to the front and rear panels. Keep away from

other heat sources. If the amps are mounted in a rack with other amps, ensure there is adequate cool

air flow front and rear. Note that air is drawn in through the back panel, and exhausted through the

front panel.

• NEVER cover the amplifiers, as they may overheat.

• Prosound power amplifiers are designed to fit standard 19” racks, with a 2U height and 17” depth. We

recommend the use of rear rack supports, especially if the rack is to be mobile. Use shakeproof

washers or threadlock adhesive to prevent mounting bolts becoming loose in transit.

• Ensure that the AC power supply is correct for your amplifier. The required AC supply is stated on the

rear panel next to the AC power input.

• Ensure that you use the correct type of mains lead for your equipment and country. This must be free

from damage, and easily accessible during use.

• Keep away from magnetic recording media (tape, mini disc, hard drive etc). Power amps produce an

electromagnetic field, which could affect stored files.

- 3 -

9. AC socket. Connect the supplied AC power lead here. Ensure the correct AC supply is used, as stated

on the rear panel.

10. AC Fuse. The AC power fuse is located in the drawer above the AC socket. Should the fuse fail,

replace only with the same type and rating. DO NOT replace with a higher value. If a replacement

fuse fails immediately, contact a qualified Service Engineer. Disconnect the amplifier from the AC

supply before attempting to change the fuse.

Wiring Conventions in ProSound Power Amps

Balanced XLR ; Pin 1=Signal ground. Pin2=IN phase signal . Pin 3=OUT phase signal.

Unbalanced XLR ; Pin 1= Signal ground. Pin2= Signal psoitive. Pin 3=Signal ground (common with 1).

¼” TRS balanced jack ; Tip=IN phase signal . Ring=OUT phase signal. Sleeve=Signal ground.

¼” unbalanced jack ; Tip=Signal Positive. Sleeve=Signal ground.

Speakon ; 1+=Speaker positive. 1-=Speaker negative. 2+=Common with 1+. 2-=Common with 1-.

- 6 -

9. Bridge LED. This LED illuminates to show that mono bridge mode has been selected on the rear

panel. Channel A level only is active, and speaker loads should be connected for bridge mode

operation as described below.

10. Clip LED (one per channel). This illuminates when the input signal is clipping, or within 3dB of

clipping. In normal use this should illuminate briefly only on signal peaks. If it illuminates constantly,

or most of the time reduce the input signal level.

11. Power LED. This illuminates to show the amplifier is connected to AC power and switched on. When

the amplifier is switched off this will slowly dim and extinguish.

Rear panel features

1. Channel A XLR input socket. This accepts line level balanced or unbalanced signal. Use this input for

Channel A in stereo mode, or for mono bridge mode operation.

2. Channel A TRS jack input socket. This accepts line level balanced or unbalanced signal. Use this

input for Channel A in stereo mode, or for mono bridge mode operation.

3. Channel B XLR input socket. This accepts line level balanced or unbalanced signal. Use this input for

Channel B in stereo mode. This input is not used in bridge mode.

4. Channel B TRS jack input socket. This accepts line level balanced or unbalanced signal. Use this

input for Channel B in stereo mode. This input is not used in bridge mode.

NOTE ; Always use good quality shielded cables for all signal connections. Keep signal cables away

from speaker cables, AC power cables or other high current carrying cables.

5. Mode switch. This switch can be set to Stereo (Channel A and channel B active and independent) or

Bridge (amplifier works as a single mono amplifier) mode.

6. Channel A speaker output socket (Speakon). Connect speakers with a total impedance of not less

than 4 ohms to this socket when in stereo mode only. The output level is controlled by the Channel A

volume control on the front panel

7. Channel B speaker output socket (Speakon). Connect speakers with a total impedance of not less

than 4 ohms to this socket when in stereo mode only. The output level is controlled by the Channel B

volume control on the front panel

8. Bridge mode speaker output socket. Connect speakers with a total impedance of not less than 8 ohms

to this socket when in bridge mode only. The output level is controlled by the Channel A volume

control on the front panel.

NOTE ; Use low resistance, unshielded high power speaker cables to connect the amplifier to your

speakers. Keep the cables as short as is practical, and keep them away from the input signal cables

- 5 -

OPERATION

Front panel features

1. Exhaust vent. This vent must be kept free from obstruction, to allow hot air drawn through the amplifier

to exit. During use warm air will blow from this vent.

2. Channel A level (volume) control. In stereo mode operation this controls the amplifiers power output on

Channel A. In bridge mode this controls the amplifiers bridged output. We recommend setting this to

maximum during use to give best headroom and dynamics. Overall level should be controlled from your

mixer or audio source.

3. Power switch. This switch turns the amplifier on. When switched to ‘OFF’, the internal circuit is isolated

from the AC supply.

4. Channel B level (volume) control. In stereo mode operation this controls the amplifiers power output on

Channel B. In bridge mode this control is inactive and should be set to zero. We recommend setting this

to maximum during stereo operation to give best headroom and dynamics. Overall level should be

controlled from your mixer or audio source.

5. VU meter (one per channel). This meter shows the level of input signal, and will fluctuate during use with

signal level. The output level of your mixer or audio source should be set so that the needle swings into

the red zone only on signal peaks. If the needle is usually in the red zone, the input level should be

reduced at the source to prevent distortion and overheating.

6. Reset button. If the amplifier output is short circuited, or a low load impedance is connected, the ‘Protect’

LED (7) will illuminate and amplifier output will be shut down. If this happens, check that the outputs are

properly connected to a suitable load, using good quality, undamaged cables. Turn the volume controls

to zero, and press the reset button. The amplifier should return to normal operation.

NOTE ; If the amplifier keeps returning to protect mode, check all connections and speaker impedances.

If the amplifier will not operate when correctly connected to a suitable load contact a qualified Service

Engineer. DO NOT attempt to hold the reset button in to defeat the protection. Serious damage could

occur.

7. Protect LED. When this LED illuminates, the onboard protection has cut in, disabling the amplifier to

protect it from fault conditions. If this illuminates, turn the amplifier off and check all connections and load

impedance.

8. TEMP LED. When this LED illuminates, the onboard over temperature protection has cut in, disabling

the amplifier to protect it. This will occur if insufficient ventilation is available, or the amp is being

overdriven. If this illuminates, turn the level controls to miniumum and check ventilation to front and rear.

The amplifier will return to active mode after a few minutes to cool down. When restarting the amplifier,

check the input signal levels using the VU meters, as described in 5 above.

- 4 -

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