Toa BG-115 Operating Instructions Manual Download Page 2

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1. IMPORTANT SAFETY INSTRUCTIONS 

• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with dry cloth.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including

amplifiers) that produce heat.

• 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.

• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and

the point where they exit from the apparatus.

• Only use attachments/accessories specified by the manufacturer.
• 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.

• Unplug this apparatus during lightning storms or when unused for long periods of time.
• 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.

INSTRUCTIONS ESSENTIELLES POUR LA SÉCURITÉ

• Lire ces instructions.
• Conserver ces instructions pour référence ultérieure.
• Respecter tous les avertissements.
• Suivre toutes les instructions.
• Ne pas utiliser cet appareil à proximité d'eau.
• Nettoyer uniquement à l'aide d'un chiffon sec.
• Ne pas obstruer les orifices de ventilation. Installer conformément aux instructions du fabricant.
• Ne pas installer à proximité de sources de chaleur telles que des radiateurs, des registres thermiques, des

chaudières ou d'autres appareils (notamment des amplificateurs) produisant de la chaleur.

• Ne pas contourner la fonction de sécurité de la fiche polarisée ou de mise à la terre. Une fiche polarisée est

équipée de deux broches, dont l'une est plus large que l'autre. Une fiche de mise à la terre est équipée de
deux broches et d'une troisième pour la mise à la terre. Cette dernière, la plus large, est prévue à des fins
de sécurité. Si la fiche fournie ne peut être insérée dans la prise électrique souhaitée, consulter un
électricien pour faire remplacer cette dernière.

• Protéger le cordon d'alimentation pour éviter qu'il ne soit piétiné ou pincé, notamment au niveau des fiches,

des prises de courant ou de son point de sortie de l'appareil.

• Utiliser uniquement les accessoires spécifiés par le fabricant.
• Utiliser uniquement avec le chariot, support, trépied, la patte de montage ou la table

spécifiés par le fabricant ou vendus avec l'appareil. En cas d'utilisation d'un chariot,
manipuler la combinaison chariot/appareil pour éviter les blessures dues à un
renversement.

• Débrancher cet appareil pendant les orages ainsi que lorsqu'il reste inutilisé pendant une période prolongée.
• La maintenance de l'appareil doit être confiée à un technicien après-vente qualifié. Une maintenance s'avère

nécessaire si l'appareil est endommagé (au niveau du cordon d'alimentation ou de la fiche), a été mouillé
par un liquide, un objet est tombé à l'intérieur, s'il a été exposé à la pluie ou l'humidité, s'il ne fonctionne pas
normalement ou s'il est tombé.

Summary of Contents for BG-115

Page 1: ...TY INSTRUCTIONS 2 2 SAFETY PRECAUTIONS 3 3 GENERAL DESCRIPTION 5 4 FEATURES 5 5 NOMENCLATURE AND FUNCTIONS Front 6 Rear 7 6 INPUT CONNECTIONS 8 7 OUTPUT CONNECTIONS 8 8 MUTING FUNCTION 9 9 MIC TEL INPUT IMPEDANCE SELECTION 9 10 JUMPER WIRE SETTING 9 11 OPERATION 10 12 RACK MOUNTING BRACKET ATTACHMENT 10 13 VOLUME SETTING 11 14 VOLUME CONTROL COVER 11 15 DIMENSIONAL DIAGRAM 11 16 SPECIFICATIONS 12 ...

Page 2: ...instructions pour référence ultérieure Respecter tous les avertissements Suivre toutes les instructions Ne pas utiliser cet appareil à proximité d eau Nettoyer uniquement à l aide d un chiffon sec Ne pas obstruer les orifices de ventilation Installer conformément aux instructions du fabricant Ne pas installer à proximité de sources de chaleur telles que des radiateurs des registres thermiques des ...

Page 3: ...r éviter un risque de choc électrique Avoid installing or mounting the unit in unstable locations such as on a rickety table or a slanted surface Doing so may result in the unit falling down and causing personal injury and or property damage External wiring connected to the terminals marked with requires installation by an instructed person The apparatus shall be connected to a mains socket outlet...

Page 4: ...n Use Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury and or property damage In addition the object itself may fall off and cause injury and or damage Make sure that the volume control is set to minimum position before power is switched on Loud noise produced at high volume when power is switched on can impair hearing Do not operate ...

Page 5: ...t When the muting and grounding terminals are shorted the microphone telephone paging input mutes both the program and AUX input The amplifiers also come with independent bass and treble controls for the program and AUX inputs which increase and decrease specific frequencies Transformer isolated output terminals are provided for connection of 4 Ω speakers or for 25 V or 70 V line applications The ...

Page 6: ...nput signal levels exceed 30 dB 4 Peak indicator PEAK Lights red when signal levels approach the signal clipping point When this lamp remains lit adjust the input level control so that the indicator lights intermittently 5 Program input volume control PROGRAM Adjusts the gain of the program input The gain increases as the control is turned clockwise 6 Mic Tel input volume control MIC TEL Adjusts t...

Page 7: ...e MOH amplifier 15 Bass control BASS Increases the low frequency response when turned clockwise and decreases the response when turned counter clockwise The center position provides the flat response 16 Treble control TREBLE Increases the high frequency response when turned clockwise and decreases the response when turned counter clockwise The center position provides the flat response 17 Sensitiv...

Page 8: ...nection of speaker cable C E H MIC H C E Input source H E Input source 41 Ω BG 115 21 Ω BG 130 25 V line 4 Ω 330 Ω BG 115 163 Ω BG 130 70 V line E C H MIC TEL input connections H C E Input source Program input connections AUX input connections Output terminals The amplifier has three speaker outputs 4 Ω 25 V and 70 V Use only one of these outputs for connection Class 2 wiring may be used Note The ...

Page 9: ...10 JUMPER WIRE SETTING The amplifier is set by the factory to send AUX and Program inputs to both the output terminals and MOH output terminals This setting can be changed as shown in the table below by cutting JP202 and JP203 jumpers on the internal circuit board IMP 600 Ω 10 kΩ Factory setting Factory setting PGM AUX JP202 JP203 Output terminal MOH output terminal Cut of JP202 Outputs only the P...

Page 10: ...at the top and the bottom of the rack and 2 above and below the unit 1U size 44 5 mm or 1 75 reference size MB 25B BK Remove four plastic feet on the bottom surface Note that these removed screws are not used Attach the MB 25B BK to the amplifier using the supplied four screws When using other screws see to it that each screw is shorter than 15 mm 0 59 MB 25B J The MB 25B J is designed to mount tw...

Page 11: ...t the sound quality is downgraded when the peak indicator remains lit 14 VOLUME CONTROL COVER To prevent the accidental change of the settings of the Program input and Mic Tel input volume controls remove their knobs after setting them to the desired position and attach the optional cover YA 920 instead 15 DIMENSIONAL DIAGRAM Unit mm inches 210 8 27 276 10 87 249 9 8 165 6 5 40 1 58 6 M4 1800 70 8...

Page 12: ...e tone control MOH control Muting threshold level Mic Tel selector switch Power ON OFF switch Power LED Signal LED Peak LED Automatic electronic drive limiter electronic muting Panel ABS resin black Case Steel plate black paint 210 w x 93 h x 276 d mm 8 27 x 3 66 x 10 87 3 3 kg 7 28 lb 3 9 kg 8 6 lb Model No Power Source Rated Output Power Consumption Rated output Frequency Response Total Harmonic...

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