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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 BA-235

Page 1: ...8 2 CHANNEL BROADCAST 9 9 OPERATION 9 10 INSTALLATION PRECAUTIONS 9 11 RACK MOUNTING BRACKET ATTACHMENT 10 12 VOLUME SETTING 11 13 VOLUME CONTROL COVER 11 14 BLOCK DIAGRAM 11 15 DIMENSIONAL DIAGRAM 12 16 SPECIFICATIONS 12 Accessories 12 Optional products 12 MASTER SIGNAL PEAK POWER ON OFF BASS TREBLE POWER AMPLIFIER BA 260 0 10 Thank you for purchasing TOA s Power Amplifiers Please carefully follo...

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: ...nter l unité en bâti Retirez les quatre vis M4 x 8 sur les deux côtés de l appareil et montez la patte à l aide des vis M4 x 16 fournies avec la patte When the Unit is in Use Should the following irregularity be found during use immediately switch off the power disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer Make no further attempt to operate the unit in thi...

Page 4: ... up inside the unit and result in fire Avoid installing the unit in humid or dusty locations in locations exposed to the direct sunlight near the heaters or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock To avoid electric shocks be sure to unplug the unit s power supply cord when connecting speakers Be sure to follow the instructions below when...

Page 5: ...or flashes intermittently 3 GENERAL DESCRIPTION The BA 235 35 W and BA 260 60 W are Power Amplifiers for background music and general announcement These units are suited for use in bars retail stores and banquet rooms When used in conjunction with the optional mixer amplifier BG 220 20 W or BG 235 35 W 2 channel broadcast can be made 4 FEATURES Remote master volume control using an external volume...

Page 6: ...ternally connected in parallel to the Line input connectors 14 Connect to the other amplifier s input 13 Input level selector switch Selects either 0 dB or 4 dB for the line input sensitivity level 14 Line input terminals 10 kΩ 0 dB 4 dB selectable see item 13 unbalanced removable terminal block and RCA jacks Upper and lower RCA jacks are internally passively mixed 0 dB 1 V These connectors are in...

Page 7: ...e connection procedure from the start Step 2 Insert the wired terminal plug into the corresponding terminal block in the unit s rear panel Step 3 Tighten the fixing screws Speaker output terminals only Notes Do not reverse Steps 1 and 2 Poor contact may result if force is applied to the unit s internal circuit board pins while the terminal screws are being tightened Use an appropriate type screwdr...

Page 8: ...rol 10 kΩ linear taper REMOTE VOLUME 6 3 2 Bridge output connection BRIDGE OUT 10kΩ H E E H Other power amplifier s Line input 6 3 Output Connections 6 3 1 Speaker connections Each amplifier has 3 speaker outputs 4 Ω 25 V and 70 V Use only one of these outputs for connection Class 2 wiring may be used Note Impedances in the figures below represent total speaker load impedance 70 V LINE Total imped...

Page 9: ...e A Sound source B Sound source C LINE IN SPEAKER OUT BA 235 or BA 260 ZONE 2 Sound source C 9 OPERATION After completing all connections turn on the power switch and check to confirm that the power indicator lights Note When the heat sink temperature exceeds 105 C 221 F the protection circuit begins to operate to disconnect the output from the circuit The disconnected output is automatically rest...

Page 10: ...ws on both sides of the unit These removed screws are not used for rack mounting Notes Rack mounting screws are not supplied with the unit Use the screws that are appropriate for the rack When mounting the unit in an equipment rack the inside of the rack must be sufficiently ventilated To achieve sufficient ventilation also mount the optional PF 511 Perforated Panel 1U 1 at the top and the bottom ...

Page 11: ...ront panel it is recommended to replace its control knob with the supplied YA 920 Volume Control Cover Follow the procedure below for its replacement Step 1 Remove the control knob Step 2 Adjust the Master volume control without knob to an appropriate level Step 3 Attach the YA 920 onto the control 14 BLOCK DIAGRAM POWER AMP SPEAKER OUT AC120 V 60 Hz POWER SUPPLY FOR POWER AMP 70 V LINE LINE IN 10...

Page 12: ...movable terminal block Output Regulation 1 kHz Under 2 dB no load to full load S N Ratio Line input Over 80 dB Band Pass 20 Hz 20 kHz Tone Controls Centered Tone Control Bass 10 dB at 100 Hz Treble 10 dB at 10 kHz Control Master gain control Bass tone control Treble tone control Input level selector switch Remote volume control Power ON OFF switch Indicator Power LED Signal level LED Peak LED Othe...

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