Chevin A500, A700v User Manual

USER MANUAL

for

PROFESSIONAL POWER AMPLIFIERS:

A500 • A700v • A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000 A5000 • A5003 • A6000 • Q6 • Q900 • Q1004 • QB1000/600 • Line250 • Line500

CONTENTS

Installation.................................................. 2

Box contents, positioning & power................ 2

Inputs ........................................................... 3

Outputs ........................................................ 4

Speaker power ratings .................................. 5

Speaker impedances ..................................... 5

Mono bridge mode....................................... 6

Bridge input & output wiring ........................6

Operation ...................................................7

Protection systems ........................................ 7

Servicing.......................................................7

Front & rear panels .......................................8

Specications.............................................. 14

Warranty & mono bridge loadings ..............16

Installation

Box contents

In addition to your amplier and this manual, the carton should contain the following items:

• Neutrik® Speakon® plugs, depending on your amplier model:

• Line250, Line500 no Speakon plugs

• A700v: one Speakon plug

• Q6, Q1004, QB1000/600, Q900: four Speakon plugs

• All other models: two Speakon plugs

• A500 and A700v only. Detachable power cable with IEC connector.

• Warranty card. Please complete this card and return it to Chevin Research. Failure to register may result in delays if you require warranty service. See rear cover for warranty.

Positioning

• Your amplier must have good ventilation. Air is drawn in at the rear panel and is expelled at the front. It is vital to keep front and rear of unit free from obstruction.

• Your amplier may be used free-standing or installed in a 19” rack. If installed in a rack, the rear of the chassis should be supported. Rear rack-mount supports are integral on all models except the A500 & A700v.

Power

Wiring

• EARTHING: All Chevin ampliers must be earthed.

• A500 & A700v models connect to the mains supply via a supplied detachable power cable.

• All other models have xed power cables, colour coded to European standards:

Green/Yellow = Earth Blue=Neutral Brown= Live

• The A5000, A6000 and Q900 have 2 power cables.

• The live connector in certain 115V models is coloured RED.

• The amplier must be connected to a 3-pin grounded outlet via a 3-pin connector of sufcient voltage and current rating. If the connector has provision for a fuse, a suitable fuse must be tted.

Mains supply

• The power rating of the supply should be at least twice the total audio output of the system.

• VOLTAGE SELECTION: Your amplier is factory set to your local supply voltage and should be changed only by an authorised Chevin dealer.

• ELECTRIC SHOCK/FIRE HAZARD: The unit must be connected to an adequately rated grounded outlet. All related cables, connectors and switch gear must be sufciently rated to avoid risk of overheating and re.

Power (continued)

Three phase systems

• IMPORTANT: The neutral current will not balance on three-phase systems.

• Use individual neutral connections from each phase outlet back to the distribution point.

• Alternatively, ensure the neutral conductor is of sufcient capacity to handle a return current equal to the sum total of the current in the three phases.

Inputs

• XLR connectors are used on all amplier inputs except for Line250 and Line500 models.

• Do not directly connect any channel to more than one signal source, these are not mixing ampliers.

• All inputs are electronically balanced and can accept signals from balanced and unbalanced sources. Maintain the same phase polarity on all equipment in the signal chain.

Inputs from balanced sources

Use shielded cable with XLR connectors at both ends (except Line250 and Line500):

• Ground/screen: Connect cable braid to XLR pin 1.

• HOT (+) signal: XLR pin 2

• COLD (–) signal: XLR pin 3

Inputs from unbalanced sources

Use shielded cable with an XLR connector at the amplier end (except Line250 and Line500) and either a jack plug, phono plug or XLR connector, as appropriate:

• Ground/screen and COLD (–): At the source end, connect the COLD signal wire and cable braid to the sleeve of jack plug or phono connector, or pin 1 of an XLR connector (if used).

• At the source end of the cable, connect the HOT (+) signal to the tip of the jack plug, the pin of the phono plug or pin 2 of an XLR connector (if used).

• Connect the XLR at the amplier end as per ‘Inputs from balanced sources’ above.

Inputs to Line250 and Line500 models

The Line250 and Line500 models use block connectors at the rear panel. Use connections at the source end as explained above for balanced or unbalanced sources. At the amplier end, make wire connections rather than using an XLR connector.

Mono bridging

Various models can have their channels bridged together (except A700v, A5000, A6000, QB1000/600, Line250 or Line500). For details about the necessary wiring, see page 6.

Speakon is a registered trademark of Neutrik AG XLR is a registered trademark of ITT Cannon Ltd.

Outputs

Connections are made to the amplier load using Neutrik Speakon sockets (except for Line250 and Line500 models). As with input connectors, maintain phase polarity throughout the system.

IMPORTANT: High voltages are present at output terminals during operation and for a period afterwards. Do not connect the amplier to any other amplier output or to any equipment other than a speaker system.

Take great care to note the wiring specications particular to your amplier model:

A700v

One Speakon socket per channel, wired as follows: 1+ = HOT 2+ = NO CONNECTION

1– = COLD (not Ground) 2– = NO CONNECTION

WARNING: The A700v output is permanently connected in bridge mode. Both hot and cold outputs carry high level signal. Further bridging is impossible. No terminal of the speaker socket is connected to ground. Do not connect any part of the speaker system to ground.

A500 • A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000 • A5003 • Q900

Two parallel-connected Speakon sockets (A500: one socket) per channel, wired as follows: 1+ = HOT 2+ = NO CONNECTION

1– = GROUND 2– = GROUND

A5000 • A6000

Two parallel-connected Speakon sockets per channel, wired as follows: 1+ = HOT 2+ = NO CONNECTION

1– = COLD (not Ground) 2– = COLD (not Ground)

WARNING: The A5000 / A6000 outputs are permanently connected in bridge mode. Both hot and cold outputs carry high level signal. Further bridging is impossible. Do not connect any part of the A5000 or A6000 outputs to ground. Take care when using loudspeaker controllers or processors.

Q6 • Q1004

One Speakon socket per channel, parallel connected in channel pairs: A & B, C & D. Each socket in the pair carries the output of both channels, wired as follows:

Channel A & B sockets:

1+ = HOT A 2+ = HOT B

1– = GROUND 2– = GROUND

Channel C & D sockets:

1+ = HOT C 2+ = HOT D

1– = GROUND 2– = GROUND

QB1000/600

One Speakon socket per channel, parallel connected in pairs: A & B, C & D. Each socket in the pair carries the output of both channels, wired as follows:

Channel A & B sockets:

1+ = HOT B 1000W 2+ = HOT A 600W

1– = GROUND 2– = GROUND

Channel C & D sockets:

1+ = HOT C 1000W 2+ = HOT D 600W

1– = GROUND 2– = GROUND

Line250 • Line500

Connect load to output connector blocks using the 0v terminal and either the 70v or 100v HOT terminals, as appropriate to the system.

Speaker power ratings

Suggested speaker ratings per amplier channel, in watts.

Model 16Ω 8Ω 4Ω 2Ω

A500 115 230 460 – A700v 450 900 – – A750 160 300 600 – A1000 • Q6 230 450 900 – A1004 • Q1004 400 750 1500 – A1500 500 1000 1900 – QB1000/600 A&D 230 450 900 –

B&C 400 750 1500 –

A2000 230 500 1000 1800 A3000 350 650 1300 2300 A4000 450 800 1500 3000 A5000 • A5003 500 1000 2000 3600 A6000 800 1200 2600 4500 Q900 350 650 1300 2300

Speaker impedances

Correct loadings for all models are shown here. Multiple speakers are connected in parallel.

A700v

WARNING: Do not use a system with a total impedance less than 8Ω.

The A700v can be used to drive a 70 volt distribution system (maximum loading 600W) or a 100 volt line system at a reduced output. Note: Do not connect a transformer between the A700v output and distribution system. Where line transformers are used to match speakers to the distribution system, adjust to suit the characteristics of the speaker.

A500 • A750 • A1000 • A1004 • A1500 • Q6 • Q1004 • QB1000/600 (per channel)

WARNING: Do not use a system with a total impedance per channel less than 4Ω. 4 or less OR 2 or less OR 1 speaker

speakers of 16Ω speakers of 8Ω of 4Ω

A2000 • A3000 • A4000 • A5000 • A5003 • A6000 • Q900 (per channel)

WARNING: Do not use a system with a total impedance per channel less than 2Ω. 8 or less OR 4 or less OR 2 or less OR 1 speaker

speakers of 16Ω speakers of 8Ω speakers of 4Ω of 2Ω

Note: The A5000 and A6000 models both incorporate an adjustable output limiting control, concealed behind the front panel. Consult an authorised Chevin dealer to enable this feature.

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