User manual PYRAMID 402VL

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Manual abstract: user guide PYRAMID 402VL

Detailed instructions for use are in the User's Guide.

[. . . ] Please make sure the switch is in the proper position before operating, otherwise severe damage will result not cover by the warranty. Please also replace the fuse with proper rating in this situation (see the SPECIFICATIONS for the fuse rating). 10. Unswitched AC Accessory Outlet - 300W MAX. 11. DC 4A/12V Input Jack (PA105) Allows you to power the amplifier from 12-volt battery source. 12. AUX / CD Input Jack Allows you to connect any high level sound source, such as a CD player, tape deck, or tuner, to the CD/AUX jack. 13. PHONO Input Jack You can connect a low level audio input source, such as a magnetic cartridge turntable to the L PHONO and R PHONO jacks. 14. PHONO and AUX/CD Input Selector Lets you select the input source you want to connect to the amplifier. 15. MIX BUS Jack Allows you to connect another PA105/402VL to this jack to double the size of your PA system. 16. Push-Terminal Connectors Let you easily connect speaker wires directly to the amplifiers. INSTALLATION GUIDELINES Connecting the GND (GROUND) screw terminal you connect a low level audio input source (turntable) to the PHONO, please connect your turntable's ground wire (usually black or green) to the amplifier's GND terminal, to avoid a low frequency hum. If You can also use this screw to ground any other system connection. Input connections The PA105/402VL accept a board range of input sources, including: Microphones (up to two simultaneously) Compact Disc (CD) player Cassette, Reel-to-Reel or other tape player Radio Tuner Magnetic Cartridge Turntable 3 Connecting microphones The MIC 1 and MIC 2 jacks permit you to connect two microphones with 6. 35mm plug. mic1 mic2 To begin with, in order to ensure equal volume from each speaker, all connected speakers should have the same impedance. A proper total impedance with the 4 to 16 Ohms range can be achieved by combining series and paralled speaker connections. [. . . ] Please see the diagrams which follow the same impedance. Finally, always use the shortest length of speaker wire possible of proper gauge. Usually, 18-gauge wire is adequate for lengths under 25 feet, while 16-gauge is used for greater lengths. System 1: Single speaker system 1. Connect the speaker (-) terminal to the amplifier COMMON terminal 2. Depending on the speaker being used, connect the speaker (+) terminal to the amplifier's 4-Ohm, 8Ohm or 16-Ohm amplifier terminal. Connecting a CD or tape player, or tuner In this Situation, set the PHONO and AUX/CD SELECTOR switch to the AUX/CD Set the Switch to the AUX/CD Position L R CD or Tuner or Tape Player + _ This example shows a 4 Ohm Speaker Connecting a turntable In this Situation, set the PHONO and AUX/CD SELECTOR switch to the PHONO. Turntable L R GND System 2:Two (or more) speakers in series 1. Connect the LEFT SPEAKER (-) to the amplifier COMMON terminal. 2. Connect the LEFT SPEAKER (+) to the RIGHT SPEAKER (-). 3. Connect the RIGHT SPEAKER (+) to the amplifier's 4-Ohm, 8-Ohm, or 16-Ohm terminal, depending on the TOTAL IMPEDANCE of the two speakers. If each speaker has an impedance of 8 Ohms, the total speaker impedance in this series configuration is 16 Ohms. Set the Switch to the Phono Position Speaker connections One or more speakers (4, 8, or 16-Ohm) speakers can be connected to the amplifier with or without transformers. However, before you connect any speaker to the amplifier, the total speaker impedance must be calculated in order to avoid damage to the amplifier. A total speaker impedance greater than 16 Ohms or less than 4 Ohms can be cause this damage to occur. 4 + _ Right Speaker This example shows a two 4 Ohm Speakers , the total impedance is 8 Ohms. Left Speaker + _ NOTE: ADDITIONAL SPEAKERS MAY BE INCLUDED IN SERIES, BUT IT IS NECESSARY TO CALCULATE TOTAL IMPEDANCE, AND CONNECT THE SPEAKER CIRCUIT TO A TERMINAL OF APPROPRIATE IMPEDANCE. Extended, high-volume listening can lead to permanent hearing loss. Always start with the volume control set to a LOW level BEFORE you put the headphones on. Then gradually increase the volume as necessary. This example shows for the first three systems in chart. In this case , 4-Ohm terminal is used your system impedance may be varied depending on the impedances of the individual speakers, and may reguire hook up to the 8 or 16 Ohms terminal. Connecting to standard AC power After making all other connections, set the POWER switch to OFF position. Then connect the power cord to a standard AC outlet. System 5: Connecting speakers with transformers 1. Locate the input taps on your transformer. These taps are on side of the transformer, and are rated in watts, 10, 5, 2. 5, 1. 25 or 0. 62. Usually, each speaker in a system uses the same wattage tap. Connect the selected tap to the amplifier 70V RMS terminal. If you wish a particular speaker to have a higher volume level, connect the wire from 70V RMS to a higher wattage tap on the transformer. [. . . ] Connect the selected tap to the amplifier 70V RMS terminal. If you wish a particular speaker to have a higher volume level, connect the wire from 70V RMS to a higher wattage tap on the transformer. 2. Connect the transformer's COMMON tap on the primary side to the amplifier COMMON terminal. 3. Connect the speaker's (+) terminals to the transformer's secondary tap that matches the speaker's TOTAL IMPEDANCE. [. . . ]

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