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Resumen del manual
A 120W power can be easily obtained by connecting conventional speaker cabinet without using a slave amp. • Mic input and other various input/output terminals are located on the rear panel ensuring easy operation. • Combination of 2 sets for 16 channel use PA-120 PA-120 PA-120S^r PA-120S-«S- In this case, the main volume of set (B) wUl not serve as volume adjustor, and the total volume of (A) and (B) can be adjusted by the main volume of the (A). * Use of second set as a slave amp PA-120 PA-120 PA-120S XS-PA-120S ■«- I MIXER OUT Connection Cord (In this case, suitably adjust the main volume controls of both sets.) (>utput=120W+120W=240W(R.M.S.) PA-120S -=»• PA-120S • How to augment power by connecting slave amps PA-120 PA-120S PA-120S (Sound volume can be adjusted via the main volume.) o v> a E -6-S-3» O o > CO c/} O o O -1-1...... °... INPUT OUTPUT INPUT Tape Recorder INPUT * When recording, connect to the LINE OUT jack. • Thanks to the employed unique attenuator with click, easy and sure control of the volume for each channel and master is ensured. • Reverb and echo can be independantly controlled for each channel. • Due to the employed headphone volume change-over switch (3-step changeover: L/M/H) in the headphone terminal for monitor, wide dynamic range can be obtained. PREPARTION 1. Set all knobs to 0 position. 2. Set the stand-by switch to OFF (lower side). 3. Connect the speaker PA-120S to the speaker terminal on the rear panel with a connection cord. 4. Plug the power cord into lthe mains socket after ensuring the power switch is OFF. 5. For the echo chamber terminal on the rear panel, connect TO ECHO jack to INPUT of the echo chamber, and FROM ECHO jack to OUTPUT, with connection cord. 6. Connect low impedance (200 ~ 600-ohm) microphones to mic terminals (MIC 1 to 8 jacks) ADJUSTMENT 1. When the power switch is set to ON, the VU meter lamp lights. 2. Set the main volume to 5-grade position. 3. Set the stand-by switch to ON on the same channel as the jack connected with microphone, then, the channel is operative. 4. Set the volume on each channel to appropriate position. In case many mics are used, adjust the total volume by the main volume, after adjusting volume of each channel. 5. Set the Treble and Bass knobs to appropriate tone. 6. If noise and power supply hum generate, change-over the power switch position up or down to choose better one. 7. It is designed to be no-deviation maximum output (120W R.M.S. - 6 ohm load) when the pointer in the VU meter is in the 0 position. If the pointer deflects to plus (red zone), lower the volume of each channel or main volume. 8. Set the reverb volume to 5-grade position and turn the effect volume of each channel clockwise to deepen the reverberation effect. Adjust the total reverberation effect with the reverb volume. 9. Set the echo volume to 5-grade position and turn the effect volume of each channel clockwise, then echo effect can be obtained. 10. Use the AC OUTLET for the echo chamber, tape recorder, etc. Its electricity can be used upto 300W. Note that this socket is operative even when the power switch on the front panel is OFF. CAUTION- • When transporting the PA-120, be sure to cover with the vinyl cover attached in order to protect the panel. • Set the amp volume to OFF when connecting/disconnecting the power plug, microphone and echo chamber plugs, otherwise, speaker may be damaged. • Since the PA-120 comprises of precision component parts, be sure not to shock to the amp. PA-120 GENERAL SCHEMATIC DIAGRAM fr-w AP-2B AP-27 AP-J4 x8 TO ECHO CH-I CH-2\ ch-3 CH-4] the signal levels (R.M.S.). These circuits are subject to change without notice. Channel Control PA-120 PANEL DISTRIBUTION HEADPHONE * Connection of Mic, Guitar and Echo Chamber. Main Control Roland PA SERIES model PA-120 • PA-120S SPECIFICATIONS Inputs (8-channel system) Mic Channel (low impedance)........................................8 Channel Control Volume ....................................................................8 Effect........................................................................8 Bass..........................................................................8 Treble ......................................................................8 Standby....................................................................8 Main Control Main Volume..............................................................1 Echo Volume..............................................................1 Reverb Volume..........................................................1 Headphone (with volume changeover switch: 3-step changeover L/M/H)........................................1 Power Switch..............................................................1 Output Jacks Speakers (1212 - 8i2: parallel).....'............................2 Headphone .................................................................