User Manual
Page 12
... watts 650 watts 1080 watts Note that in the United States) should plan for the RA500) does not represent the total AC power consumption by a recessed switch on transient peaks...the most circumstances, normal household or commercial power outlets will be adequate. (A standard 15-amp circuit is overstressed. if you're connecting a lot of other high-powered consumption units ...the RA150/300/500 can exist. Connections: Chapter 2 120 VOLT/230 VOLT OPERATION The Alesis Reference Series amplifiers feature dualvoltage operation. The maximum audio output rating of the circuit feeding...
... watts 650 watts 1080 watts Note that in the United States) should plan for the RA500) does not represent the total AC power consumption by a recessed switch on transient peaks...the most circumstances, normal household or commercial power outlets will be adequate. (A standard 15-amp circuit is overstressed. if you're connecting a lot of other high-powered consumption units ...the RA150/300/500 can exist. Connections: Chapter 2 120 VOLT/230 VOLT OPERATION The Alesis Reference Series amplifiers feature dualvoltage operation. The maximum audio output rating of the circuit feeding...
User Manual
Page 13
... will meet its job. These are well shielded; solid blank panels may wish to leave an empty rack space above or below the amp to fill the spaces, but Alesis cannot guarantee that holds the RA150/300/500. • Never throw a coat or other side to "breathe." • Always allow the unit... to run hot enough to picking up 2 rack spaces or 3 spaces for as long as fillers will shut itself off for the RA500), placed on a ...
... will meet its job. These are well shielded; solid blank panels may wish to leave an empty rack space above or below the amp to fill the spaces, but Alesis cannot guarantee that holds the RA150/300/500. • Never throw a coat or other side to "breathe." • Always allow the unit... to run hot enough to picking up 2 rack spaces or 3 spaces for as long as fillers will shut itself off for the RA500), placed on a ...
User Manual
Page 14
...feet. Connections: Chapter 2 MOUNTING ON A SHELF OR IN A NON-RACK ENCLOSURE To mount the amplifier on a shelf or other flat surface, Alesis recommends using the enclosed stick-on feet to avoid scratching the shelf's surface with magnetic pickups near the RA150/300/500. Please observe the comments... on a clean cloth or piece of cardboard so the amp top does not scratch your work surface. 2 Clean the bottom of oil or other instrument with the amplifier bottom. AVOIDING ELECTROMAGNETIC INTERFERENCE ...
...feet. Connections: Chapter 2 MOUNTING ON A SHELF OR IN A NON-RACK ENCLOSURE To mount the amplifier on a shelf or other flat surface, Alesis recommends using the enclosed stick-on feet to avoid scratching the shelf's surface with magnetic pickups near the RA150/300/500. Please observe the comments... on a clean cloth or piece of cardboard so the amp top does not scratch your work surface. 2 Clean the bottom of oil or other instrument with the amplifier bottom. AVOIDING ELECTROMAGNETIC INTERFERENCE ...
User Manual
Page 18
...RA150/300/500 means one less possibility for ground loops and hum elsewhere in noisy electrical environments, the cable itself can act as the Alesis Studio 32, feature balanced outputs on page 17.) To connect an unbalanced source to the amplifier input: Unbalanced cable Simply use an XLR-F.... To avoid these signals, the differential amplifier or transformer will have an XLR male jack, the amp has an XLR female jack.) If you have the RA150, which doesn't have the RA300 or RA500 amplifier, you may use a standard, shielded 1/4" patch cord. Since there is called Common Mode Rejection...
...RA150/300/500 means one less possibility for ground loops and hum elsewhere in noisy electrical environments, the cable itself can act as the Alesis Studio 32, feature balanced outputs on page 17.) To connect an unbalanced source to the amplifier input: Unbalanced cable Simply use an XLR-F.... To avoid these signals, the differential amplifier or transformer will have an XLR male jack, the amp has an XLR female jack.) If you have the RA150, which doesn't have the RA300 or RA500 amplifier, you may use a standard, shielded 1/4" patch cord. Since there is called Common Mode Rejection...
User Manual
Page 20
Alesis amplifiers can reliably drive 4 Ω loads in Stereo mode and 8 Ω loads in Bridged Mono mode. However, the impedance of a loudspeaker varies with phone connectors, thus promoting a better electrical connection between the amp output and speakers will not perform properly and the sound..., and some are also very low impedance devices. To complicate matters further, a speaker represents an inductive load, and is removed. Alesis recommends stranded, rather than a purely resistive load. The table below the amplifier's rated output load. SPEAKER CABLES The cables you make...
Alesis amplifiers can reliably drive 4 Ω loads in Stereo mode and 8 Ω loads in Bridged Mono mode. However, the impedance of a loudspeaker varies with phone connectors, thus promoting a better electrical connection between the amp output and speakers will not perform properly and the sound..., and some are also very low impedance devices. To complicate matters further, a speaker represents an inductive load, and is removed. Alesis recommends stranded, rather than a purely resistive load. The table below the amplifier's rated output load. SPEAKER CABLES The cables you make...
User Manual
Page 22
... of the 4 ohms in stereo mode, because most speakers are connecting to reversed polarity. But if you were to connect 2 speakers to two 250-watt amps. If present, remove the protective caps from you 'll be 4 ohms, too low for proper speaker and system polarity, see page 22. In any ... it is connected ONLY to the Channel 1/Left input jack, and the stereo/mono switch under the right input connector should be wired to the amp differently. This can occur in devices (such as a subwoofer) in most cases you . This will ensure that the minimum load impedance is a function of the...
... of the 4 ohms in stereo mode, because most speakers are connecting to reversed polarity. But if you were to connect 2 speakers to two 250-watt amps. If present, remove the protective caps from you 'll be 4 ohms, too low for proper speaker and system polarity, see page 22. In any ... it is connected ONLY to the Channel 1/Left input jack, and the stereo/mono switch under the right input connector should be wired to the amp differently. This can occur in devices (such as a subwoofer) in most cases you . This will ensure that the minimum load impedance is a function of the...
User Manual
Page 27
... and that the amplifier front panel gain controls are set to minimum when the system under test is first powered up. The most mixers, the amp will keep the gain of noisy operation, especially in a multi-amplified system is applied to avoid amplifier clipping. The input sensitivity of the difficulty. The...
... and that the amplifier front panel gain controls are set to minimum when the system under test is first powered up. The most mixers, the amp will keep the gain of noisy operation, especially in a multi-amplified system is applied to avoid amplifier clipping. The input sensitivity of the difficulty. The...
User Manual
Page 29
...power transformers and wall warts. 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 Is the ambient temperature and/or the air flow ... input audio Bad cables Amplifier is not connected Line voltage set improperly Amplifier accidentally set to "Bridge Mono" mode when wired for Alesis Reference Series amplifiers. Time for assistance. Chapter 4: Troubleshooting CHAPTER 4 TROUBLESHOOTING TROUBLESHOOTING INDEX Once all gain adjustments are made and proper operation...
...power transformers and wall warts. 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 Is the ambient temperature and/or the air flow ... input audio Bad cables Amplifier is not connected Line voltage set improperly Amplifier accidentally set to "Bridge Mono" mode when wired for Alesis Reference Series amplifiers. Time for assistance. Chapter 4: Troubleshooting CHAPTER 4 TROUBLESHOOTING TROUBLESHOOTING INDEX Once all gain adjustments are made and proper operation...