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Cloud CXV-225 Installation And User Manual

CXV-425

Made by: Cloud
Type: Installation And User Guide
Category: Amplifier
Pages: 16
Size: 1.36 MB

 

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CXV-225 & CXV-425

AMPLIFIERS 

Installation and User Guide

 


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CXV-225 & CXV-425 User Manual v1.0

3

Contents

Safety Information ........................................ 4

Safety Notes Regarding Installation .......................4
Conformities ...............................................................4
Safety Considerations and Information ................4

General Description ...................................... 5

Applicable Models ......................................................5

Schematic Diagram ...................................... 5

Front Panel Description ............................... 6

Rear Panel Description ................................. 7

Installation ..................................................... 8

Mechanical ...................................................................8

Ventilation ....................................................................8
Connections and Adjustments ................................8
Inputs ............................................................................8

Sensitivity and Gain Control ................................8

Input Routing ...........................................................8

Remote Control of Level ......................................9

Outputs ........................................................................9

Protection...............................................................10
High Pass Filters ....................................................10

VCA Cards (optional) .............................................10

Installation  .............................................................10

BOSE® Equalisation Modules (Optional) ...........11

Installation ..............................................................11

General Notes ............................................. 11

EMC Considerations ...............................................11
Earthing ......................................................................11

Technical Specifications .............................. 12

General Specifications ................................ 12

Location of Internal Jumpers and 

Connectors. .................................................. 13

CXV-225 connector and jumper details .............13
CXV-425 connector and jumper details .............14

 


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CXV-225 & CXV-425 User Manual v1.0

4

Safety Information

Safety Notes Regarding Installation

Do not expose the unit to water or moisture.

 

Do not expose the unit to naked flames.

 

Do not block or restrict any air vent.

 

Do not operate the unit in ambient temperatures above 

 

35 °C.
Do not touch any part or terminal carrying the 

 

hazardous live symbol (     ) while power is supplied to 

the unit.
Do not perform any internal adjustments unless you 

 

are qualified to do so and fully understand the hazards 

associated with mains-operated equipment.
The unit has no user-serviceable parts. Refer servicing 

 

to qualified service personnel.

If the moulded plug is cut off the AC power lead for 

 

any reason, the discarded plug is a potential hazard and 

should be disposed of in a responsible manner.

Conformities

This product conforms to the following European EMC 

Standards: 

BS EN 55103-1:1997
BS EN 55103-2:1997

This product has been tested for use in commercial and 
light industrial environments. If the unit is used in controlled 
EMC environments, the urban outdoors, heavy industrial 
environments or close to railways, transmitters, overhead 
power lines, etc., the performance of the unit may be 
degraded.
The product conforms to the following European electrical 
safety standard:

BS EN 60065:2002

The CXV Series was developed and manufactured with high 
quality materials and components, which can be recycled 
and/or reused. 

Safety Considerations and Information

The unit must be earthed. Ensure that the mains power 

supply provides an effective earth connection using a three-

wire termination.
When the mains switch is in the off ‘O’ position the live 

and neutral conductors of the mains transformer are 

disconnected.

Caution - High Voltages

Do not touch any part or terminal carrying the hazardous 

live symbol (     ) while power is supplied to the unit.
Terminals to which the hazardous live symbol refers require 

installation by a qualified person.

Caution - Mains Fuse

Replace the mains fuse only with the same type and rating as 

marked on the rear panel.  
The fuse body size is 20 mm x 5 mm.

Caution - Servicing

The unit contains no user-serviceable parts. Refer servicing 

to qualified service personnel. Do not perform servicing 
unless you are qualified to do so.

Disconnect the power cable from the unit before removing 

the top panel and do not make any internal adjustments with 

the unit switched on.
Only reassemble the unit using bolts/screws identical to the 

original parts.

 


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CXV-225 & CXV-425 User Manual v1.0

5

Applicable Models

This manual describes the installation and operation of the 

following models:

Cloud CXV-225 2-channel amplifier –    

 

 

2 x 250 W, 2U 19” rack unit

Cloud CXV-425 4-channel amplifier –    

 

 

4 x 250 W, 3U 19” rack unit

Apart from the number of channels and the units’ physical 

dimensions and power consumption figures, the two 

models are otherwise identical for the practical purposes of 

installation and operation.

General Description

The Cloud CXV-225 and CXV-425 are high power    

(250 W/ch), multi-channel audio amplifiers intended for use 

with high quality PA and background music systems in offices, 

hotels, factories, leisure facilities and other commercial and 

industrial premises.
They are designed to drive 100 V line speaker systems 

directly, and have no low-impedance outputs. Low impedance 

loudspeakers can only be connected to these amplifiers 

with the use of an intermediate 100 V line transformer. 

Loudspeakers designed for such ‘installed-sound’ applications 

will normally include an integral transformer, typically with 
selectable output power taps. If you have any doubt about 

the suitability of this amplifier for the speaker system it is to 

be connected to, please verify that the speakers are of the 

100 V line type with the manufacturer.

Unlike traditional 100 V line amplifier designs, the CXV-225 

and CXV-425 do not employ an output transformer. This 

produces a considerable saving in weight and a significant 

improvement in audio quality.

1

1

1

1

1

2

2

2

2

2

+

+

+

+

-

-

-

-

3

3

3

3

3
4
5
6
7
8

LEVEL

LEVEL

LEVEL

LEVEL

FREQ

FREQ

FREQ

FREQ

VCA

VCA

VCA

VCA

SPEAKER

EQ

SPEAKER

EQ

SPEAKER

EQ

SPEAKER

EQ

CLIP

LIMITER

CLIP

LIMITER

CLIP

LIMITER

CLIP

LIMITER

PROTECT

PROTECT

PROTECT

PROTECT

OUTPUTS

J4

J3

J2

J1

CHANNEL.

POWER

AMPLIFIER

POWER

AMPLIFIER

POWER

AMPLIFIER

POWER

AMPLIFIER

CXV-225

CXV-425 

fig.1: CXV Series schematic diagram

Schematic Diagram

 


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CXV-225 & CXV-425 User Manual v1.0

6

Front Panel Description

1

SIGNAL LEDs (one per channel)

 

 illuminate 

when the output voltage exceeds approx. 12.5 Vrms 
(18 dB below maximum output)

2

PEAK LEDs (one per channel)

 

 illuminate if 

maximum output voltage is reached (100 Vrms)

3

PROTECT LEDs (one per channel) –

 indicate 

fault conditions

4

AC POwER SwITCH

5

POwER LED

6

AIR INTAKE GRILLES 

1

2

3

4

5

6

fig.2: CXV-425 Front panel

fig.3: CXV-225 Front panel

1

2

3

4

5

6

 


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CXV-225 & CXV-425 User Manual v1.0

7

Rear Panel Description

1

INPUT CONNECTORS (one per channel) 

2

INPUT LEVEL CONTROLS (one per channel)

3

HIGH PASS FILTER CONTROLS   

 

(one per channel) 

4

INPUT ROUTING SwITCHES –    

 

1 for CXV-225, 3 for CXV-425

5

REMOTE VOLUME CONTROL CONNECTORS 

– 

when remote control option is fitted (one per 

channel)

6

OUTPUT TERMINAL COVER 

7

OUTPUT TERMINALS 

8

AC MAINS CONNECTOR

9

EARTH SAFETy TAG

10

MAINS FUSE

11

COOLING FANS AND AIR EXHAUST –    

CXV-425 only

1

2

3

4

5

6

8

9

10

11

11

fig.4: CXV-425 Rear panel showing output terminal cover

fig.5: CXV-225 Rear panel showing output terminals

1

2

3

4

5

7

8

9

10

 


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CXV-225 & CXV-425 User Manual v1.0

8

Installation

Mechanical

The amplifiers are designed to be mounted in a standard 

19” equipment rack. The front panel is fitted with rackmount 

ears for this purpose. The CXV-225 requires 2U of vertical 
rack space, the CXV-425 requires 3U. See notes below 

regarding spacing and ventilation.
Due to the units’ weight, the use of additional side supports 
is recommended.

Ventilation

The CXV-425 is force cooled by two thermostatically-

controlled fans mounted on the rear panel. The fan is 

operative at all times, remaining at low speed at internal 

temperatures below 50 °C, then increasing in speed above 

this temperature to a maximum speed at 70 °C. 
The CXV-225 has a single fan mounted internally to keep 

noise to a minimum.

Always allow adequate space around the amplifier(s) to 

allow a free flow of air through the unit(s). Ensure that cable 

bundles or other items do not obstruct any grilles.
In 19” rack applications we recommend leaving 1U of rack 

space above and below each unit. Plain 1U blank panels, 
not slotted ventilation panels should be used, as the latter 

reduce the effect of forced-air cooling. The direction of 

airflow is from front-to-rear (CXV-425) and front-to-sides 

(CXV-225); it is recommended not to mix these amplifiers 

with other equipment employing forced-air cooling which 

acts in the opposite direction within the same rack.

Connections and Adjustments
Inputs

Each amplifier channel has an electronically-balanced input 

on a 3-pin 3.5 mm-pitch screw terminal connector. Twin-
core screened cable should be used when driving the 

amplifier inputs from a device with a balanced output. Single-

core screened cable can be used when connecting to an 
unbalanced source.

Sensitivity and Gain Control

Control of input level is provided by a preset rotary 
control adjacent to each input connector. The control 

should be adjusted using a trim tool or small screwdriver. 

Full attenuation of the input signal – i.e., zero output – is 

obtained with the control fully anti-clockwise. Maximum 

sensitivity is with the control fully clockwise; at this setting 

the maximum output level of 100 Vrms will be produced for 
an input signal level of 0.775 Vrms (0 dBu).
We recommend that the level for each channel should 
be adjusted after installation is complete to ensure that 

adequate, but not excessive sound levels are achieved with 

the programme material that will be used in practice.

Input Routing

To facilitate the use of the amplifiers in multi-zone 

applications, input selection switches are provided on all 

channels except Ch1. This gives the installer an easy method 
of paralleling channels from a single input.
The options are summarised in the table below:

CHANNEL 

SOURCE

CXV-225

CXV-425

Button position

Out

In

Out

In

Channel 2

Input 1

Input 2

Input 1

Input 2

Channel 3

Input 1

Input 3

Channel 4

Input 2* Input 4

* post Ch 2 switch

Refer also to the block diagram on page 5

.

CXV-225 only:

 The CXV-225’s single switch allows 

Channel 2 to be operated in parallel with Channel 1, with 
Input 1 acting as the common input connector.

CXV-425 only:

 The three switches on the CXV-425 allow 

a total of 8 routing possibilities, including 4-channel, dual 
stereo and mono operation with 4 channels paralleled. The 

table below clarifies the options:

BUTTON 

POSITION

INPUT ROUTING: CHANNELS 

FED By EACH INPUT

Ch 1 Ch 2 Ch 3 Input 1

Input 2

Input 3 Input 4

In

In

In

Ch 1

Ch 2

Ch 3

Ch 4

Out

In

In

Chs 1 & 2

Ch 3

Ch 4

In

Out

In

Chs 1 & 3

Ch 2

Ch 4

Out

Out

In

Chs 1, 2 & 3

Ch 4

In

In

Out

Ch 1

Chs 2 & 4 Ch 3

Out

In

Out

Chs 1, 2 & 4

Ch 3

In

Out

Out

Chs 1 & 3

Chs 2 & 4

Out

Out

Out

Chs 1, 2, 3 & 4

1

2

3

Balanced output

(typically XLR):

pin 1: ground

pin 2: hot

pin 3: cold

Amplifier input

1

2

3

+

-

+

-

pin 1: n/c

pin 3: hot 

pin 2: cold

BALANCED CONNECTION

Amplifier input

1

2

3

+

-

pin 1: n/c

pin 3: hot 

pin 2: cold

Unbalanced outputs 
     (e.g. phonos):

screen:  ground

pin:       hot

UNBALANCED CONNECTION

fig.6: Input wiring

 


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CXV-225 & CXV-425 User Manual v1.0

9

Remote Control of Level

The CXV-225 and CXV-425 amplifiers are compatible with 

standard Cloud remote control plates type RL-1, allowing 

control of level from a remote position. In order to use 

the amplifiers with the RL-1, VCA cards must first be fitted 

in the channels to be controlled remotely. See page 10 for 

details of VCA cards and fitting. Once VCA cards have been 

fitted, RL-1s may be connected at the rear 3-pin 5 mm-pitch 

screw terminal connectors (Remote Level), using the wiring 

shown below. 

1 2 3

REMOTE LEVEL 

CONNECTOR

1 2 3

RL-1

USE TWO-CORE SCREENED CABLE

Use two-core screened cable to connect the remote level 

plate (maximum length 100 metres).

Outputs

The 100 V line speaker output terminals are behind the 

removable output terminal cover (see page 7). The covers 

are fitted with a cable gland (one per channel); to use these, 

slacken the rear nut by a few turns and feed the cable 

through. The plug-in connectors are suitable for cable cores 

up to 2.5 mm

2

.

Connect as shown below:

-

+

-

+

CH 1

CH 2

-

+

CH 1

CH 2

-

+

-

+

-

+

-

+

CH 3

CH 4

CXV-425

CXV-225

1

2

3

4

1

2

3

4

6

7

8

5

After making the connections, replace the cover and tighten 

the gland nuts. They only need to be firmly finger-tight; take 

care not to over tighten, use only enough torque to give 
reasonable cable retention. Do not use a spanner.

Caution: 

The amplifier should never be operated without 

the output terminal cover installed. Apart from exposing 
the high voltage terminals, leaving the cover off also 

compromises the amplifier’s forced-air cooling.
The amplifier’s transformerless output stage is designed 

to drive up to 100 Vrms into an impedance of at least  

40 ohms (each channel). Check the input impedance of the 

loudspeaker type in use and divide this figure by the number 

of loudspeakers* to ensure that the total impedance is 
greater than 40 ohms. Alternatively, add the wattages of all 
the loudspeakers being driven by each channel (taking power 
tappings into account); the total must be less than 250 W.

* Assumes all loudspeakers in the system are of the same type and have the 
same tap setting.

fig.7: Remote level control wiring

fig.8: Output wiring

 


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CXV-225 & CXV-425 User Manual v1.0

10

Protection

The amplifiers include comprehensive protection circuitry 

to prevent damage to loudspeakers, the output devices and 

other components in the event of a fault condition.
Thermal Protection
The output device heatsink temperatures are monitored and 
the protection circuitry activated if any should exceed 90°C. 

The red front panel PROTECT LED for the appropriate 

channel illuminates to indicate the fault condition.
DC Protection
Crowbar protection is provided to safeguard the 

loudspeakers in the event of DC being present at the output 
terminals. This is an emergency protection feature that 

will only operate in the event of the amplifier developing a 

fault. Its action is liable to blow internal DC rail fuses. The 

amplifier must be serviced before any attempt is made to 

use it further.
Short-circuit protection

VI limiting is implemented in the amplifiers to protect the 

output stages from excessive dissipation caused by abnormal 

loads; for example, a short-circuit.
Switch-on protection
The protection circuitry is also activated immediately after 

the amplifier is switched on. This is to prevent any voltage 

spikes due to start-up conditions from damaging the 
loudspeakers. The protection circuitry automatically times 

out after approx. 5 seconds. All PROTECT LEDs illuminate at 

switch-on for the duration of the time-out period.

High Pass Filters

Most transformers fitted to 100 V line speakers exhibit 

core saturation when fed with high-level signals at low 
frequencies. Transformer saturation creates unpleasant 
distortion and stresses the system. To counteract this, a 

correctly configured high pass filter is an essential part of 

any 100 V line system. The CXV-225 and CXV-425 have 

variable frequency high pass filters in each channel, accessible 

at the rear panel (see page 7). These should be adjusted to 
reject low frequencies, to suit both the speakers and the 
application. When adjusting, bear in mind that the higher 
the frequency setting, the less likely it is that the system will 
suffer from saturation problems.
The minimum (20 Hz) setting should only be used when 

the system has some other form of filter or protection 

from high-level low frequency signals (e.g., a dedicated 
speaker processor) or when the speaker manufacturer 
explicitly states that they will operate correctly at such low 
frequencies.
For speech-only
Settings somewhere between 100 Hz (12 o’clock) and 200 

Hz are appropriate. Start with the filter set to 100 Hz and 

turn the control clockwise whilst listening to speech through 
the system until you can hear a loss of bass in the voice. Few 

voices contain any useful signal below 200 Hz, so in many 

cases the filter can be set to 200 Hz without any real loss 

of quality. Often a setting this high will actually enhance the 

clarity of the speech, reduce microphone handling noise and 

reduce breath blasts.
For music systems

The optimum filter setting will depend on the speakers and 

their transformers. It should be recognised that  

many 100 V line speakers have inferior LF performance 

compared to low impedance speakers. If the manufacturer 

recommends a minimum frequency of operation, set the 

filter to this. Otherwise, settings between 70 Hz and 100 Hz 

should be appropriate.
Test the system at full volume with a variety of music 

containing high level, low bass notes and listen for any 

distortion. If the transformers saturate, distortion will be 

clearly audible. In this case, turn the control clockwise until 
it disappears.

VCA Cards (optional)

Cloud VCA-5 modules must be fitted to the CXV-225 
and CXV-425 amplifiers if remote control of audio level is 

required. One VCA-5 module is required for each channel, 

and as many as necessary may be fitted. The VCA modules 

use the industry-standard That’s 2181 VCA device, which 

provides very low distortion and up to 90 dB attenuation at 

cut-off.
The VCA module can also be used to provide muting by 

using an auxiliary relay connected to a fire alarm control 

panel. Please contact our technical department for further 
details.

Installation 

With the power turned off and the mains cable 

 

removed, remove the top panel.
Refer to the pcb layout diagrams on 

 

page 13. Locate the 

VCA connector for the first channel being fitted, and 

remove the jumper joining one pair of pins. 
Unscrew the blanking plate from the rear panel.  

 

Remove and retain the M3 fixing screw adjacent to the 

 

connector, and fit the 35mm M3 hex spacer supplied 

with the VCA-5 in its place. 
Push the 10-way VCA plug onto the PCB connector, 

 

aligned so the cable enters it from the rear of the 
chassis.  Check there is contact with all 10 pins.
Locate the VCA module’s 3-pin socket in the rear panel 

 

cut-out and secure using the M3 screw provided.
Replace the top panel.

 

Once the VCA-5 modules have been installed, RL-1 remote 
level control plate(s) may be connected to the REMOTE 
LEVEL connector(s) on the rear panel.

 


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CXV-225 & CXV-425 User Manual v1.0

11

BOSE® Equalisation Modules (Optional)

The CXV-225 and CXV-425 are compatible with Bose® 

Series II loudspeakers; a single-channel Bose® equalisation 

module may be fitted to as many channels as necessary. 

Equalisation modules for the following Bose® models are 

available:

Panaray® MA12

 

Panaray® 402-II, 502B and 502BEX

 

Panaray® LT Series: Models 3302, 4402, 9402 and 9702

 

Freespace® DS 16 range

 

Freespace® Model 16

 

Freespace® Model 32 range

 

Other modules are available; please enquire.

Installation

With the power turned off and the mains cable 

 

removed, remove the top panel.
Refer to the pcb layout diagrams on 

 

page 13. The 

modules plug into the white 12-pin connectors on the 

PCB. Note the header connectors on the PCB have two 

notches on one side only; these engage with lugs on 
the equalisation module’s mating connector to ensure 

correct orientation.

After fitting equalisation modules to any channel(s), 

 

the corresponding module bypass jumper(s) must be 

removed in order for the module to function. Refer to 

the pcb layout diagrams for jumper locations.
Replace the top cover with the original screws after 

 

fitting

General Notes

EMC Considerations

CXV Series amplifiers fully conform to the relevant 

electromagnetic compatibility (EMC) standards and are 

technically well behaved. You should experience no problems 

interfacing units to other items of equipment and under 

normal circumstances, no special precautions need to 

be taken. If the unit is to be used in close proximity to 

potential sources of HF disturbance such as high power 
communication transmitters, radar stations and the like, it is 

suggested that input signal leads be kept as short as possible. 

Always use balanced interconnections wherever possible.

Earthing

When several mains powered units are connected together 

via their signal cables, there is a risk of one or more earth 
loops which may cause an audible hum on the system even 

with the gain controls set to minimum. 

The 0 V rail of a CXV Series amplifier is directly coupled to 

the chassis ground. No interconnection problems should be 

encountered, but if there is any hum or other extraneous 

noise when source equipment is connected, the situation can 

generally be remedied by observing the following guidelines:

Always connect sources using balanced connections 

 

wherever possible, with the cable screen only connected 

at the receiving end (amplifier input).

Use audio isolating transformers (readily available from 

 

trade suppliers) at the inputs if necessary. These will 

ensure that the amplifier is electrically isolated from the 

source equipment.
The signal source units should be located as close as 

 

possible to the amplifiers and the metal housing of 

the various units should not be electrically connected 
together through the equipment rack. If this is a 
problem, rack isolating kits are available from specialist 
hardware suppliers. If the problem persists, try to 
connect all interconnected units, including power 

amplifiers, to a common power source to ensure a 

common ground is provided.

 


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CXV-225 & CXV-425 User Manual v1.0

12

Technical Specifications

CXV-225 & CXV-425

Outputs

100 Vrms; 250 W into 40 Ω min. load (per channel)

Frequency Response

20 kHz -0.6 dB; LF response dependent on filter setting

High Pass Filter

-3 dB @ 20 Hz – 200 Hz variable

Distortion

<0.04% @ 1 kHz & 1 dB below limiting, 40 Ω load

Crosstalk

-80 dB @ 10 kHz

Sensitivity

0.775 Vrms (0 dBu)

Input Impedance

10 kΩ balanced, 5 kΩ unbalanced

Noise (rms)

-96 dB, 22Hz - 22kHz, relative to 100 Vrms

Power Input

230 V ±5%

Fuse Rating

230 V, 5 A

Fuse Type

T5A, 20 mm x 5 mm 250V

General Specifications

CXV-225

CXV-425

Inputs

Electronically balanced; 3-pin 2.5 mm-pitch plug-in screw terminal connectors

Outputs

2-pin 5 mm-pitch plug-in screw terminal connectors

Protection

Clip Limiting, VI Limiting, DC Offset, Thermal & switch-on delay

Status Indicators

LED indicators on each channel for Signal, Peak & Protect

Cooling

Force cooled; internal variable speed 

DC fan

Force cooled; two rear-mounted 

variable speed DC fans

Dimensions
(mm, W x H x D)

482.6 x 88 (2U) x 300 (+ connectors)

482.6 x 132.5 (3U) x 332 
(+ connectors)

Weight

8.8 kg net

21 kg net

 


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CXV-225 & CXV-425 User Manual v1.0

13

FAN ASSY.

REAR OF AMPLIFIER

CON3

CON1

VCA CARD 

SOCKETS

CON10

CON9

J1

J2

BOSE

®

EQ CARD 

SOCKETS

OUTPUT 

TERMINALS

NOT TO SCALE

CXV-225: MAIN PCB LAYOUT.

 

TOP VIEW. ONLY PRIMARY

 

COMPONENTS SHOWN.

 

BOSE

®

EQ   CARD 

BYPASS JUMPERS

fig.9: Internal jumpers - CXV-225

Location of Internal Jumpers and Connectors.

CXV-225 connector and jumper details

MODEL

PCB REF

Function

Default Setting

CXV-225

CON1

CH1 VCA CARD

SET

CON3

CH2 VCA CARD

SET

CON9

CH1 BOSE

®

 EQ CARD

CON10

CH2 BOSE

®

 EQ CARD

J1

CH 1 EQ CARD BYPASS

SET

J2

CH 2 EQ CARD BYASS

SET

 


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CXV-225 & CXV-425 User Manual v1.0

14

CXV-425 connector and jumper details

MODEL

PCB REF

Function

Default Setting

CXV-425

CON12

CH1 VCA CARD

SET

CON13

CH2 VCA CARD

SET

CON24

CH3 VCA CARD

SET

CON25

CH4 VCA CARD

SET

CON5

CH1 BOSE® EQ CARD

CON6

CH2 BOSE® EQ CARD

CON15

CH3 BOSE® EQ CARD

CON17

CH4 BOSE® EQ CARD

J1

CH 1 EQ CARD BYPASS

SET

J2

CH 2 EQ CARD BYPASS

SET

J3

CH 3 EQ CARD BYPASS

SET

J4

CH 4 EQ CARD BYPASS

SET

REAR OF AMPLIFIER

CON25

CON12

CON13

CON24

(INPUTS 3 & 4 SUB BOARD)

(OUTPUT SUB BOARD)

CON6

CON5

CON17

CON15

J1

J2

J3

J4

VCA CARD 

SOCKETS

OUTPUT 

TERMINALS

CXV-425: MAIN PCB LAYOUT.

 

TOP VIEW. ONLY PRIMARY

 

COMPONENTS SHOWN.

 

BOSE

®

EQ CARD 

SOCKETS

BOSE

®

EQ   CARD 

BYPASS JUMPERS

NOT TO SCALE

fig.10: Internal jumpers - CXV-425

 


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CXV-225 & CXV-425 User Manual v1.0

15

Bose® is a registered trademark of The Bose Corporation.

In the interest of continuing improvements Cloud Electronics Limited reserves 

the right to alter specifications without prior notice.

 


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Cloud Electronics Limited

140 Staniforth Road

Sheffield S9 3HF

England

Tel: +44 (0)114 244 7051

Fax: +44 (0)114 242 5462

email: info@cloud.co.uk

web: www.cloud.co.uk