User manual YAMAHA YMC10

[. . . ] Cable/s supplied with this product MUST be used. Failure to follow instructions could void your FCC authorization to use this product in the USA. NOTE: This product has been tested and found to comply with the requirements listed in FCC Regulations, Part 15 for Class "B" digital devices. Compliance with these requirements provides a reasonable level of assurance that your use of this product in a residential environment will not result in harmful interference with other electronic devices. [. . . ] The amp's internal speaker (4 ) is connected to the SPEAKER 1 jack. The SPEAKER 2 (EXT) jack can be used to add an external speaker(s). Also, if necessary, you can disconnect the internal speaker to connect 2 external speakers directly to the amp. The two speaker jacks are connected in parallel. When external speakers are used, make sure the speakers meet the following requirements. When using a single SPEAKER Jack (1 or 2) Please use a system that complies with one of the following requirements. · The total impedance* of the circuit should never be less than 2. · A 2 speaker system must have a power handling capability of 500W or greater. · A 4 speaker system must have a power handling capability of 250W or greater. · An 8 speaker system must have a power handling capability of 125W or greater. When using both SPEAKER Jacks (1 & 2) Please use a system that complies with one of the following requirements. Connecting three 4 speaker cabinets in a series as shown below, results in a total impedance of 12. As the BBT500-115's and BBT500-110's two speaker jacks are connected in a parallel circuit inside of the amplifier, adding a 4 external speaker to the 4 internal speaker will result in a total impedance of 2. So in order to maintain a minimum impedance of 2, an external speaker with an impedance of 4 or greater must be used. Connected in Parallel Total impedance = Connecting three 4 speaker cabinets in a parallel configuration as shown below, results in a total impedance of about 1. 3. 4 4 4 External Speaker Greater than 4 Internal Speaker 4 Attaching the Clamp Filter (For U. S. and Canadian models only) To protect against electromagnetic waves, attach the supplied Clamp Filter to the cable connecting the bass guitar to the amplifier's INPUT jack, and to the cable connecting the amplifier to an external speaker. * The cable connecting the internal speaker (SPEAKER 1 jack) is fitted with a Clamp Filter at the factory. * When attaching the clamp filter, wrap the cable once around the clamp filter as close to the BBT500 unit as possible. Cable Clamp Filter Clamp Filter 10 Operating Instructions Getting sound output 1 First, make sure that the POWER switch is switched OFF, then connect your bass to the INPUT Jack on the front panel. Rotate the OUTPUT knob fully to the left and then switch the POWER switch ON. Sound Setting When the power is switched ON, all control knobs function as labeled on the panel and described below. All lamps on the display above the control knobs and switches are unlit. Rotate the SOUND TYPE knob to select a sound type, then use the Tone Control knobs to shape the sound. Before selecting a sound type, first set the GAIN through TREBLE control knobs to their center positions then try out the different Sound Types. Also, the COMP knob is used to adjust the compressor's compression ratio. [. . . ] When set to "oFF" (OFF) data will not be received. * "Ld" appears on the display while receiving MIDI Bulk data. BBT500 Rear Panel MIDI IN MIDI OUT External MIDI Device 2 Hold the [FUNCTION] switch for more than three seconds (until "utL" appears on the display) to enter the Utility Mode. While holding the [MANUAL] switch, press Memory Switch [5]. The type of data to be sent with the Bulk Out operation appears on the display (after a few seconds the display will return to "utL"). Type of data to be sent with the Bulk Out operation. Sending/Receiving MIDI Data Between Two BBT500s The MIDI Bulk In or MIDI Bulk Out operations can be used to copy memory or Utility Setup data in one BBT500 to another BBT500. 3 Restoring the Factory Presets This operation clears the contents of the BBT500's memory 1-5 and restores all parameters to their factory preset settings. [. . . ]