User manual YAMAHA MLA8

[. . . ] Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the 11 12 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. [. . . ] · Company names and product names used in this Owner's Manual are trademarks or registered trademarks of their respective owners. · Yamaha Pro Audio global web site: http://www. yamahaproaudio. com/ 4 MIC LINE AMPLIFIER Front Panel 80 2 3 4 OFF ON +48V PEAK 26dB SIGNAL 5 6 7 -16 +10 GAIN -60 -34 MIC LINE AMPLIFIER 80 PEAK 26dB SIGNAL 1 80 PEAK 26dB SIGNAL 2 80 PEAK 26dB SIGNAL 3 80 PEAK 26dB SIGNAL 4 80 PEAK 26dB SIGNAL 5 80 PEAK 26dB SIGNAL 6 80 PEAK 26dB SIGNAL 7 80 PEAK 26dB SIGNAL 8 POWER OFF ON +48V -16 +10 GAIN -60 -34 OFF ON +48V -16 +10 GAIN -60 -34 OFF ON +48V -16 +10 GAIN -60 -34 OFF ON +48V -16 +10 GAIN -60 -34 OFF ON +48V -16 +10 GAIN -60 -34 OFF ON +48V -16 +10 GAIN -60 -34 OFF ON +48V -16 +10 GAIN -60 -34 OFF ON +48V -16 +10 GAIN -60 -34 ON / OFF 1 1 POWER switch and indicator This switch turns the power on or off. Press the switch in to turn it on (the Power indicator lights). To avoid loud noise from the speakers, first turn on the power to the connected devices that are closest to the sound source. Example: Sound source MLA8 Mixer Power To turn off the power to the system, reverse the order described above. 5 PEAK indicators Light up in red when the signal level via the channel's GAIN control comes within 3dB of the clipping level. 6 SIGNAL indicators Light up in green when the signal level via the channel's GAIN control reaches within 10dB of the nominal (rated) level. amplifier 7 GAIN controls Adjust the gain applied to the input signal level. If level is low (e. g. , mic input) turn the [26dB] button off, and adjust the input levels from -60dBu to -16dBu. If the signal level is high (e. g. , line input), turn the [26dB] button on, and adjust the input levels from -34dBu to +10dBu. n To get the best balance between the S/N ratio and the dynamic range, adjust the gain so that the Peak indicator comes on just as the signal approaches its maximum level. 2 [ 80 ] buttons This button switches the high pass filter (HPF) on or off for each channel, cutting frequencies below 80Hz. Press the button in to turn HPF on. 3 [26dB] buttons Pressing this button turns on the attenuator for each channel, attenuating the input signal level by 26dB. 4 [+48V] switches This switch supplies phantom power to pins 2 and 3 of the XLR-type input connectors on each channel. Turn this switch on if you are using condenser microphones requiring external +48V power with the INPUT (XLR) connector. · To avoid damage to speakers, be sure to turn off any connected amplifier (or powered speakers) before turning these switches on or off. · Be sure to leave these switches off if you do not need phantom power. If you connect to an unbalanced device or to an ungrounded transformer while these switches are on, it may result in humming noise or even damage. Security cover This device has two holes for installing the protective cover on each side of the front panel (size: M3, distance between holes: 423mm). To prevent operation errors and inadvertent changes, you can attach a user-made cover to the front panel. Yamaha, however, does not make a security cover for the device. If you attach such a cover yourself, make sure that the securing screws do not protrude inside the front panel by more than 15mm. +48 V DC is applied to balanced inputs for powering condenser microphones via 6. 8 k ohms current-limiting/isolation resistors. Comes on when post ­ GAIN signal level reaches +17 dBu. Comes on when post ­ GAIN signal level reaches -10 dBu. Power Supply Cord, Euroblock Connectors ( 3P x 8 ), Rubber Feet ( x 4 ), Owner's Manual 25 W 480 mm x 44 mm x 375. 5 mm 4. 7 kg Phantom Power CH PEAK LED CH SIGNAL LED Included Accessories Power Consumption Dimensions (W x H x D) Weight MIC LINE AMPLIFIER 19 ESPAÑOL Hum & Noise are measured with a 6 dB/octave PAD ON , GAIN Minimum filter @12. 7 k Hz; equivalent to a 20 k Hz filter ( Sensitivity = +10 dBu ) with infinite dB/octave attenuation. dBu FRANÇAIS DEUTSCH ENGLISH Specifications Iuput Characteristics PAD 0 ­60 26 3 k ohms 0 ­16 26 *1: 0 dBu is referenced to 0. 775 Vrms. 50 ­ 600 ohms Mics 600 ohms Lines Gain Actual Load Impedance For Use With Nominal Input Level *1 Nominal ­60 dBu (0. 775 mV) ­34 dBu (15. 5 mV) ­16 dBu (123 mV) +10 dBu (2. 45 V) Max. before Clip ­40 dBu (7. 75 mV) ­14 dBu (155 mV) +4 dBu (1. 23 V) +30 dBu (24. 5 V) XLR-3-31type (balanced) Connector In Amplifier unit ENGLISH DEUTSCH FRANÇAIS ESPAÑOL Output Characteristics Actual Source Impedance For Use With Nominal Output Level *1 Nominal Max. [. . . ] Wettergrens Gata 1 Box 30053 S-400 43 Göteborg, Sweden Tel: 031 89 34 00 SINGAPORE Yamaha Music Asia Pte. , Ltd. No. 11 Ubi Road 1, No. 06-02, Meiban Industrial Building, Singapore Tel: 747-4374 ARGENTINA Yamaha Music Latin America, S. A. Sucursal de Argentina Viamonte 1145 Piso2-B 1053, Buenos Aires, Argentina Tel: 1-4371-7021 DENMARK YS Copenhagen Liaison Office Generatorvej 8B DK-2730 Herlev, Denmark Tel: 44 92 49 00 TAIWAN Yamaha KHS Music Co. , Ltd. Tel: 02-2511-8688 PANAMA AND OTHER LATIN AMERICAN COUNTRIES/ CARIBBEAN COUNTRIES Yamaha Music Latin America, S. A. [. . . ]