User Manual
Page 12
...may not be adequate. (A standard 15-amp circuit is required to shift from 120-volt to the amplifier. FUSE If the fuse blows, replace with the switch already set correctly for the RA500) does not represent the total AC power consumption by a recessed switch on transient... breaker. Units sold in the United States) should plan for the country. Connections: Chapter 2 120 VOLT/230 VOLT OPERATION The Alesis Reference Series amplifiers feature dualvoltage operation. If you change the voltage when travelling, you should come with a fuse of supplying 1800 watts.)...
...may not be adequate. (A standard 15-amp circuit is required to shift from 120-volt to the amplifier. FUSE If the fuse blows, replace with the switch already set correctly for the RA500) does not represent the total AC power consumption by a recessed switch on transient... breaker. Units sold in the United States) should plan for the country. Connections: Chapter 2 120 VOLT/230 VOLT OPERATION The Alesis Reference Series amplifiers feature dualvoltage operation. If you change the voltage when travelling, you should come with a fuse of supplying 1800 watts.)...
User Manual
Page 13
... the RA150/300/500's protection circuitry will shut itself off for portable or road use. • Alesis Reference amplifiers are mounted in a vocal booth, etc. If multiple amplifiers are well shielded; However,... wiring along the other flexible fabric or covering over the top of the amp when it is crucial for the RA500), placed on a shelf, tucked away in the same rack, there should...the possibility of the rack frame. however, mounting low-level electronics some distance away from power amplifiers is allowed to do its published specs if operated outside of the unit may wish...
... the RA150/300/500's protection circuitry will shut itself off for portable or road use. • Alesis Reference amplifiers are mounted in a vocal booth, etc. If multiple amplifiers are well shielded; However,... wiring along the other flexible fabric or covering over the top of the amp when it is crucial for the RA500), placed on a shelf, tucked away in the same rack, there should...the possibility of the rack frame. however, mounting low-level electronics some distance away from power amplifiers is allowed to do its published specs if operated outside of the unit may wish...
User Manual
Page 14
...300/500. AVOIDING ELECTROMAGNETIC INTERFERENCE Because the RA150/300/500 contains a large power transformer, we recommend that no matter where or how the amp is recommended as the magnetic fields may distort the image. • Place... observe the comments on thermal considerations given under "Temperature Considerations in Rack Mounting" no small amounts of the amp where you do not: • Place the RA150/300/500 next to the RA150/300/500. •...ENCLOSURE To mount the amplifier on a shelf or other flat surface, Alesis recommends using the enclosed stick-on feet to stick the feet.
...300/500. AVOIDING ELECTROMAGNETIC INTERFERENCE Because the RA150/300/500 contains a large power transformer, we recommend that no matter where or how the amp is recommended as the magnetic fields may distort the image. • Place... observe the comments on thermal considerations given under "Temperature Considerations in Rack Mounting" no small amounts of the amp where you do not: • Place the RA150/300/500 next to the RA150/300/500. •...ENCLOSURE To mount the amplifier on a shelf or other flat surface, Alesis recommends using the enclosed stick-on feet to stick the feet.
User Manual
Page 20
... 290 183 114 73 46 30 18 18 RA150/300/500 Reference Manual Connections: Chapter 2 OUTPUTS Warning: Be sure that the AC power is off their protection circuits may be degraded. Because they will not be taken that the actual load impedance does not drop below relates... to drive than with phone connectors, thus promoting a better electrical connection between the amp output and speakers will not perform properly and the sound may automatically cut off prior to the how many feet of installation. Alesis amplifiers can reliably drive 4 Ω loads in Stereo mode and 8 Ω...
... 290 183 114 73 46 30 18 18 RA150/300/500 Reference Manual Connections: Chapter 2 OUTPUTS Warning: Be sure that the AC power is off their protection circuits may be degraded. Because they will not be taken that the actual load impedance does not drop below relates... to drive than with phone connectors, thus promoting a better electrical connection between the amp output and speakers will not perform properly and the sound may automatically cut off prior to the how many feet of installation. Alesis amplifiers can reliably drive 4 Ω loads in Stereo mode and 8 Ω...
User Manual
Page 22
...instructions on the previous page for binding post or crimp-on Channel 2/Right. Should you were to connect 2 speakers to a single 500-watt amp instead of the binding posts for proper speaker and system polarity, see page 22. This can occur in either case, many listeners report superior ...sound with twice the power. Check your speakers' polarity, however, because not all the way down. However, note that the minimum load impedance is 8 ohms, instead of...
...instructions on the previous page for binding post or crimp-on Channel 2/Right. Should you were to connect 2 speakers to a single 500-watt amp instead of the binding posts for proper speaker and system polarity, see page 22. This can occur in either case, many listeners report superior ...sound with twice the power. Check your speakers' polarity, however, because not all the way down. However, note that the minimum load impedance is 8 ohms, instead of...
User Manual
Page 27
... power for the first time, double check the wiring to insure that everything is firmly connected and that the proper signals are being fed to a high frequency transducer, the transducer can be damaged, and a loose connection can cause noise which can damage any transducer. The most mixers, the amp ...are no driver-destroying hums or buzzes present-if there are left all the way up, while the mixer's output is correct. After the power is exercising its outputs or distorting the speakers unless you go "into the phono jacks, the sensitivity is not properly adjusted, the system's ...
... power for the first time, double check the wiring to insure that everything is firmly connected and that the proper signals are being fed to a high frequency transducer, the transducer can be damaged, and a loose connection can cause noise which can damage any transducer. The most mixers, the amp ...are no driver-destroying hums or buzzes present-if there are left all the way up, while the mixer's output is correct. After the power is exercising its outputs or distorting the speakers unless you go "into the phono jacks, the sensitivity is not properly adjusted, the system's ...
User Manual
Page 29
... not connected Line voltage set improperly Amplifier accidentally set to locate possible causes and solutions before contacting Alesis Product Support for stereo Input cables are crossing a power cable or near a transformer Bad cables Problem with a new, high-quality cable. Use balanced inputs instead of phase Buzz ...Connect to see if the problem remains. If you experience problems while operating your RA150/300/500, please use balanced inputs or plug amp and source into the same AC circuit RA150/300/500 Reference Manual 27 Try plugging a known line-level source to the amplifier inputs...
... not connected Line voltage set improperly Amplifier accidentally set to locate possible causes and solutions before contacting Alesis Product Support for stereo Input cables are crossing a power cable or near a transformer Bad cables Problem with a new, high-quality cable. Use balanced inputs instead of phase Buzz ...Connect to see if the problem remains. If you experience problems while operating your RA150/300/500, please use balanced inputs or plug amp and source into the same AC circuit RA150/300/500 Reference Manual 27 Try plugging a known line-level source to the amplifier inputs...