JB SYSTEMS VX-700 User Manual [fr]

WWW.BEGLEC.COM

VX-SERIES

AMPLIFIERS

Operation Manual

Mode d'emploi

Gebruiksaanwijzing

Bedienungsanleitung

Manual de instrucciones

Reproduction or publication of the content in any manner, without express permission of the publisher, is prohibited.

Copyright © 2004 by BEGLEC cva.

Version: 1.0

The Power Source for DJ’s

ENGLISH OPERATION MANUAL

ENGLISH OPERATION MANUAL

SAFETY INSTRUCTIONS:

OPERATION MANUAL

Thank you for buying this JB Systems product. To take full advantage of all possibilities,
please read these operating instructions very carefully.

FEATURES

• Professional amplifier for all-round sound reproduction

• Short Circuit protection

• DC current protection

• High temperature protection

• Forced fan cooling

• Bridge function (except on VX400)

• Balanced XLR and Jack inputs

• Ground/lift switch

• Speakon® compatible speaker outputs

• Binding post speaker outputs (screws)

• Strong Aluminum 19” front

BEFORE USE

Check that the carton contains the following items:

• Power amplifier

• Operating instructions

• Mains power cable.

To prevent fire or shock hazard, do not expose this appliance to rain or moisture. Do not
place metal objects or spill liquid inside the turntable. Electric shock or malfunction may
result.

SOME IMPORTANT INSTRUCTIONS:

• Always install this appliance in a well vented place. Avoid presence of heat sources.
Avoid places that are dusty and humid.

• Don’t cover any ventilation openings as this may result in overheating.

• Keep this booklet in a safe place for future consultation. If you sell the fixture, be sure to

add this user manual.

• To prevent fire or shock hazard, do not expose this appliance to rain or moisture.

• In order to prevent electric shock, do not open the enclosure. If a problem occurs,

contact your dealer.

• Do not place metal objects or spill liquid inside the unit. Electric shock or malfunction
may result.

• To protect the environment, please try to recycle the packing material as much as
possible.

CLEANING THE UNIT:

Clean by wiping with a cloth slightly dipped with water. Avoid getting water inside the unit.
Do not use volatile liquids such as benzene or thinner which will damage the unit.
Clean the ventilation holes regularly with a vacuum cleaner. This increases the cooling
capacity of the amplifier fans and helps preventing temperature overheat.

CAUTION

The lightning flash with arrowhead symbol within the equilateral triangle is
intended to alert the use or the presence of un-insulated “dangerous voltage”
within the product’s enclosure that may be of sufficient magnitude to
constitute a risk of electric shock.
The exclamation point within the equilateral triangle is intended to alert the
user to the presence of important operation and maintenance (servicing)
instructions in the literature accompanying this appliance.

CAUTION: To reduce the risk of electric shock,
do not remove any cover. No user-serviceable
parts inside. Refer servicing to qualified service
personnel only.

JB SYSTEMS 1/35 VX - AMPLIFIERS

CONNECTIONS

Be sure to turn off the unit before you make changes to the wiring. For the signal inputs
we recommend using the XLR-connections. Use good quality signal cables to ensure
excellent audio quality. For example use JB cables with order codes: 7-0061 (XLR/XLR
L=1m) or 7-0063 (XLR/XLR L=5m). For the speakers we suggest using the Speakon®
compatible outputs. Suitable cables are for example JB order codes: 2-0505 (L=5m) or 2­0510 (L=10m).

JB SYSTEMS 2/35 VX - AMPLIFIERS

ENGLISH OPERATION MANUAL

FRONT PANELS

1. POWER LED: This blue led is on when you turn the amplifier on using switch(2).

2. MAINS SWITCH: Used to turn the amplifier on and off. A few seconds after switching

on the amplifier it is ready for operation.

3. GAIN CONTROLS: These potentiometers are used to control the input sensitivity of

the amplifier. Each channel has its own control.
You can use these controls to set the maximum sound level of your setup:

• Turn both controls on the amplifier (3) to the left.

• Put on some music on and make sure the VU meters on your mixer are at 0dB.

(from time to time the red zone is lit)

• Set the Master output from your mixer to maximum.

• Open the Gain controls from the amplifier (3) until the maximum desired sound level

is reached.

• Make sure nobody can reach the Gain controls of the amplifier.
You have just set the maximum level the DJ is able to produce. Your neighbors will be
glad…☺ (in some cases the DJ is not )

Note for VX200 and VX700: In Parallel and Bridge mode, only the gain control of the left channel is
used to adjust the input sensitivity.

4. CLIP LED: Turns on just before the maximum, distortion free, output level of the

amplifier. The clip leds may turn on shortly from time to time but they may certainly not
turn on for longer periods. In this case you have to turn the output level down!

ENGLISH OPERATION MANUAL

5. PROTECT LED: The protection LED is on when the speakers are disconnected from

the amplifier. This occurs in the following situations:

• During the first seconds after switching on the amplifier.

• When the temperature of the power stage becomes too high.

• In case of a technical defect: DC protection!

• While switching the amplifier off, the “protect led” turns on for a short time.

6. BRIDGE LED: (only for VX200 and VX700) Indicates that the amplifier is working in

bridge mode. This means that both channels are switched together in series to act as
one mono amplifier. The output power nearly doubles compared to the separate
channels. However the impedance of the connected speaker cabinets must be twice
compared to that of normal stereo mode. In bridge mode, you have to apply the signal
only to the left input of the amplifier. The right input is not used. For more information
refer to point (11) in the next chapter.

Attention: Take care not to use speaker cabinets with a total impedance lower than 8Ω. This will
overload the amplifier!

7. VENTILLATION HOLES: during its operation the amplifier produces heat that needs

to be dissipated. The fans inside the amplifier must be able to evacuate the heat in the
most effective way. Therefore is it very important not to cover any of the ventilation
openings as this may result in overheating.

8. PARALLEL MODE: (only for VX200) Indicates that the amplifier is working in parallel

mode. This means that both channels are switched together in parallel to act as one
mono amplifier. The output power nearly doubles compared to the separate channels.
However the impedance of the connected speaker cabinets must be half compared to
that of normal stereo mode. In parallel mode, you have to apply the signal only to the
left input of the amplifier. The right input is not used. For more information refer to
point (11) in the next chapter.

Attention: to be able to produce the indicated power, the total impedance of the connected speaker
cabinets must be around 2Ω !

JB SYSTEMS 3/35 VX - AMPLIFIERS

JB SYSTEMS 4/35 VX - AMPLIFIERS

ENGLISH OPERATION MANUAL

REAR PANELS

ENGLISH OPERATION MANUAL

• STEREO MODE (most common): Connect the speaker cables as shown on the

drawing below. Make sure not to switch the red and black wires. Be sure to set
the switch on the rear panel to “stereo”. On the VX400 this switch is not
available.

9. FAN & VENTILLATION HOLES: during its operation the amplifier produces heat that

must be dissipated. The fans inside the amplifier must be able to evacuate the heat in
the most effective way. Therefore is it very important not to cover any of the ventilation
openings as this may result in overheating.

10. SPEAKON OUTPUTS: use these Speakon® compatible connectors to connect your

speaker cabinets. Refer to chapter “connections” to learn which cables are suitable.
Wiring of these connectors is as follows:

• POS(+) = Speakon connector PIN1+ and PIN2+

• NEG(-) = Speakon connector PIN1- and PIN2-

11. BINDING POST SPEAKER OUTPUTS: We strongly suggest you to use the

Speakon® connectors as described above(10). If you don’t have these or you want to
use the amplifier in bridge or parallel mode, you can use the binding post connectors.
Important: Use cables that have clear markings for + and – poles. We suggest using
red/black cables (such as JB Systems order code: 935). It is very important that you
don’t switch the + and – poles of the outputs. This results in very poor sound
reproduction without low frequencies! There are 3 ways to connect the speaker
cabinets using the binding post connectors:

• BRIDGE MODE: (only for VX200 and VX700) Connect the speaker cables as

shown on the drawing below. Be sure to set the switch on the rear panel to
“bridge”. Also refer to (6) in the previous chapter.

• PARALLEL MODE: (only for VX200) Connect the speaker cables as shown on

the drawing below. Be sure to set the switch on the rear panel to “parallel”. Also
refer to (8) in the previous chapter.

12. GROUND LIFT switch: In some cases nasty hum noises can occur due to ground

loops in your setup. Setting the Ground lift switch to the position “lift” breaks the
ground loop between the amplifier and the chassis grounds of various other
components in your setup. As a result the hum noises disappear.

13. MODE switch: (not for VX400) Used to set the operation mode of the amplifier. The

most common operation mode is “stereo”. If you need more power, you can operate
the amplifier in bridge or parallel mode. Refer to points (6), (8) and (11) for more
information.

JB SYSTEMS 5/35 VX - AMPLIFIERS

JB SYSTEMS 6/35 VX - AMPLIFIERS

ENGLISH OPERATION MANUAL

14. XLR inputs: You can connect these balanced inputs to balanced and unbalanced line
level audio sources (example: DJ-mixer):

• Balanced source: Use good quality XLR/XLR balanced audio cables.
Example: JB Systems 7-0061 (XLR/XLR L=1m) or 7-0063 (XLR/XLR L=5m)
Wiring of the XLR connector: PIN1: GND PIN2: pos+ PIN3: neg-.

• Unbalanced source: Use good quality XLR/cinch audio cables.

15. JACK inputs: You can connect these balanced inputs to balanced and unbalanced

16. POWER input: Use the supplied power cable to connect the amplifier to the mains.

17. INPUT SENSITIVITY switch: (only VX200) With this switch you can perfectly adapt

Example: JB Systems 2-0445 (XLR/cinch L=1.5m)

line level audio sources (example: DJ-mixer):

• Balanced source: Use good quality JACK/JACK balanced audio cables.
Wiring of the JACK connector: Sleeve: GND TIP: pos+ RING: neg-.

• Unbalanced source: Use good quality JACK/cinch audio cables.
Example: JB Systems 2-0430 (JACK/cinch L=1.5m) or 2-0435 (L=3.0m)

This connector also holds a 20mm glass fuse. Always replace a blown fuse by another
with exactly the same specifications. (fuse specifications can be found on the rear
panel, next to the power input connector)

the input sensitivity of the amplifier: 0,77V; 26dB or 1,4V.

SPECIFICATIONS

MODEL VX200 VX400 VX700
Power stereo 4 ohm 2x 110Wrms 2x 200Wrms 2x 350Wrms
Power stereo 8 ohm
Power bridge 8 ohm 1x 220Wrms *** 1x 700Wrms
Power parallel 2 ohm
Freq. Resp. (+/-1.5dB) 10 - 50000Hz 10 - 50000Hz 10 - 50000Hz
Input Sensitivity
Input impedance
S/R ratio
Damping factor
Slew Rate
Cooling
Inputs
Outputs
Power supply
Dimensions (mm) 44x483x320 (19"/1U) 88x483x260 (19"/2U) 88x483x260 (19"/2U)

JB SYSTEMS 7/35 VX - AMPLIFIERS

Speakon/binding post Speakon/binding post Speakon/binding post

2x 65Wrms 2x 135Wrms 2x 200Wrms

1x 220Wrms *** ***

0,77V / 26dB / 1.4V 0,77V 0,77V

20 kohm 20 kohm 20 kohm

>85dB >85dB >85dB

>150 >150 >200

40V/uS 35V/uS 60V/uS

Force Fan cooling Force Fan cooling Force Fan cooling

Balanced XLR/Jack Balanced XLR/Jack Balanced XLR/Jack

AC230V / 50Hz AC230V / 50Hz AC230V / 50Hz

MODE D'EMPLOI FRANCAIS

MODE D’EMPLOI

Nous vous remercions et félicitons pour l'achat de ce produit JB SYSTEMS. Nous vous
prions de lire ce mode d'emploi afin d'utiliser cet appareil convenablement. Apres l'avoir
lu gardez-le pour une éventuelle future consultation.

CARACTERISTIQUES

• Amplificateur professionnel pour de multiples reproductions sonores

• Protection court-circuit

• Protection courant DC

• Protection hautes températures

• Ventilation forcée par ventilateur

• Fonction Bridge (excepté sur le VX400)

• Entrées XLR symétriques et entrées Jack

• Interrupteur de masse Ground/lift

• Sorties haut-parleurs compatible Speakon®

• Bornes de connexion pour haut-parleurs (visses)

• Face avant solide en aluminium 19”

AVANT L’UTILISATION

Vérifier la présence des composants suivants:

• Amplificateur de puissance

• Mode d’emploi

• Câble d’alimentation.

CONSEILS DE SECURITE:

Afin d'éviter tout risque d'électrocution ou d'incendie, n'exposez pas l’amplificateur aux
intempéries ou à l'humidité.
Ne pas insérer d'objets métalliques et ne pas laisser couler de liquide dans l'appareil. Des
électrocutions ou disfonctionnements peuvent s'en suivre.

JB SYSTEMS 8/35 VX - AMPLIFIERS

CAUTION

Cette flèche dans un triangle met l'utilisateur en garde de la présence dans
l'appareil de haut voltage sans isolation qui peut causer un risque
d'électrocution.
Un point d'exclamation dans un triangle prévient de la présence d'instructions
de fonctionnement et de maintenance fournies avec l'appareil.

ATTENTIÓN: Afin d'éviter tout risque
d'électrocution, ne pas ouvrir l'appareil. En cas
de problème, mettez-vous en contact avec votre
revendeur.

MODE D'EMPLOI FRANCAIS

INSTALLATION:

• Installez toujours cet appareil dans un endroit bien ventilé. Evitez la présence de
sources de chaleur. Evitez des endroits poussiéreux et humides.

• Ne recouvrez jamais un orifice de ventilation car ceci peut provoquer une surchauffe de
l’appareil.

• Conservez ce livret dans un endroit sûr afin de toujours pouvoir le consulter
antérieurement. Si vous revendez cet appareil, ajoutez-y toujours ce mode d’emploi.

• Pour éviter des risques d’incendie ou d’électrocution, n’exposez jamais cet appareil à la
pluie ou à l’humidité.

• Pour éviter l’électrocution, n’ouvrez pas le couvercle de protection. Si un problème
surgit, contactez votre revendeur.

• N’insérez jamais d’objets métalliques et ne renversez jamais de liquide dans l’appareil.
L’électrocution ou le mal fonctionnement peuvent en résulter.

• Pour préserver l’environnement, veuillez essayer de recycler le mieux possible les
matériaux d’emballage.

NETTOYAGE DE L’APPAREIL:

Nettoyez l’appareil à l’aide d’un chiffon doux, légèrement humide. Evitez d’introduire de
l’eau à l’intérieur de l’appareil. N’utilisez pas de produits volatiles tels que le benzène ou
le thinner qui peuvent endommager l’appareil.
Nettoyez régulièrement les orifices de ventilation à l’aide d’un aspirateur. Ceci augmente
la capacité de refroidissement des ventilateurs et aide à éviter une éventuelle surchauffe
de l’amplificateur.

CONNECTIONS

Eteignez toujours l’appareil avant de faire un quelconque changement de câblage. Pour
le signal d’entrée nous vous recommandons d’utiliser les connecteurs XLR. Utilisez des
câbles de signal de bonne qualité afin d’assurer une excellente qualité audio. Utilisez par
exemple les câble JB au codes de commande: 7-0061 (XLR/XLR L=1m) ou 7-0063
(XLR/XLR L=5m). Pour les haut-parleurs nous vous suggérons d’utiliser les sorties
compatibles Speakon®. Les câbles qui conviennent sont par exemple les JB aux codes
de commande: 2-0505 (L=5m) ou 2-0510 (L=10m).

MODE D'EMPLOI FRANCAIS

FACE AVANT

1. POWER LED: ce led bleu est allumé quand vous allumez l’amplificateur en utilisant

l’interrupteur (2).

2. MAINS SWITCH: est utilisé pour allumer ou éteindre l’amplificateur. Quelques

secondes après avoir allumé l’amplificateur il sera prêt à être utilisé.

3. CONTRÔLES DE GAIN: ces potentiomètres sont utilisés pour contrôler la sensibilité

d’entrée de l’amplificateur. Chaque canal possède son propre réglage.
Vous pouvez utiliser ces potentiomètres pour régler le niveau sonore maximal de
votre installation:

• Tournez les deux potentiomètres de votre amplificateur vers la gauche (3).

• Mettez de la musique et vérifiez si les VU mètres de votre table de mixage sont à

0dB. (la zone rouge s’allume de temps en temps)

• Réglez le niveau de sortie principal de votre table de mixage (Master) sur maximum.

• Ouvrez les potentiomètres de Gain de l’amplificateur (3) jusqu’à ce que le niveau

sonore que vous désirez soit atteint.

• Assurez-vous que personne ne peut toucher les potentiomètres de Gain de votre
amplificateur.

Vous venez de régler le niveau maximal que le DJ peut produire. Vos voisins seront
contents…☺ (dans quelques cas le DJ ne le sera pas)

JB SYSTEMS 9/35 VX - AMPLIFIERS

JB SYSTEMS 10/35 VX - AMPLIFIERS