Yamaha BBT500H Owner's Manual - Page 9

This setting can be used when you want the line signal processed with the same EQ setting as the speaker. * The FX LOOP is active on both PRE EQ and POST EQ signals. @0 Speaker Simulator Switch (SP SIM: OFF/LINE/ON) This switch is used to switch the Speaker Simulator circuit ON/OFF. When the Speaker Simulator is activated, this special circuit adds the live characteristics of a speaker to the line out signal and headphones output. This feature is useful when you want to produce a distorted tone with a speaker system that incorporates a tweeter, or to add the resonance of a large speaker and its enclosure to a speaker system that uses only small speakers. The sound created with the Speaker Simulator is optimized to compliment the selected Sound Type. OFF Deactivates the Speaker Simulator on LINE OUT, SPEAKER, and PHONES jack signals. LINE Activates the Speaker Simulator on LINE OUT, and PHONES jack signals only. ON Activates the Speaker Simulator on LINE OUT, SPEAKER, and PHONES jack signals. * The Speaker Simulator can only be applied to the LINE OUT jack output when the !9 Line Out Source Switch is set to "POST EQ". @1 Output Limiter Switch (OUTPUT LIMITER: ON/OFF) This switch is used to switch the Output Limiter circuit ON/OFF. When set to the ON position, the limiter suppresses the signal if it exceeds the threshold before sending it to the SPEAKER jack and LINE OUT jack. OFF Deactivates the Limiter on both LINE OUT and SPEAKER jack signals. ON Activates the Limiter on both LINE OUT and SPEAKER jack signals. @2 MIDI OUT Jack Connect this jack to the MIDI IN jack on an external MIDI device that can save MIDI data (such as a MIDI data filer, etc.), and save patch data from the BBT500H to an external device. (→ pg. 16: MIDI Bulk Out) Also, when MIDI Merge is set ON, MIDI data received from an external MIDI device via the MIDI IN jack is transmitted from the MIDI OUT jack without alteration. (→ pg. 16) @3 MIDI IN Jack Connect this jack to the MIDI OUT jack on MIDI Foot Controller, etc., to select patches, control volume, etc., with the MIDI Foot Controller. (→ pg. 15) Also, patches that have been saved to an external MIDI device can be loaded into the BBT500H's internal memory. (→ pg. 16: MIDI Bulk IN) @4 Speaker Jacks (SPEAKER 1, 2) Two Speaker Jacks are provided for connecting speaker systems. The two jacks are connected in parallel inside the unit. Make sure that the speaker cabinet you use meets the requirements given below. q 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 2Ω. • A 2Ω speaker system must have a power handling capability of 500W or greater. • A 4Ω speaker system must have a power handling capability of 250W or greater. • An 8Ω speaker system must have a power handling capability of 125W or greater. Panel Controls and Connections q When using both SPEAKER Jacks (1 & 2) Please use a system that complies with one of the following requirements. • The total impedance* of the circuit should never be less than 2Ω. • A 4Ω speaker system must have a power handling capability of 250W or greater. • An 8Ω speaker system must have a power handling capability of 125W or greater. To obtain optimum performance from the amplifier, we recommend that a speaker system with a power handling capability of 250W or greater and impedance of 4Ω be used with each SPEAKER jack (1 and 2). * For U.S. and Canadian models only To protect against electromagnetic waves, attach the supplied Clamp Filters to the cables connecting the amplifier's SPEAKER 1, 2 jacks to the speakers. (→ pg. 17) @5 Power Connector (AC IN) Connect the supplied power cable to this terminal to supply the unit with power from an AC power outlet. When connecting the power cable, make sure the amplifier's POWER switch is turned OFF. * Total Impedance Whenever two or more speaker cabinets are connected to the unit, consideration must be given to the total impedance of the speaker system. Normally, a speaker cabinet has an impedance of 4, 8 or 16Ω. But when two or more speaker cabinets are used together, the total impedance will change according to the manner in which the cabinets are connected. q Connecting in a Series Total impedance = 1st Speaker + 2nd Speaker + 3rd Speaker ... Connecting three 4Ω speaker cabinets in a series as shown below, results in a total impedance of 12Ω. q Connected in Parallel Total impedance = Connecting three 4Ω speaker cabinets in a parallel configuration as shown below, results in a total impedance of about 1.3Ω. 4 4 4 9