User Manual
Page 3
... Operation 20 OPERATION 21 Front Panel Controls 21 Volume Controls 21 On-Off Switch 21 Mute Switch 21 Protect/Clip Indicators 22 Meters (RA300 and RA500 only 22 Back Panel Controls 22 AC Voltage Switch 22 Stereo/Bridged Mono Switch 22 Checking For Proper Polarity 22 Using the RA150 as a Headphone... Setting the Gain Properly 25 Output Relays/Thermal Cycling 26 TROUBLESHOOTING 27 Troubleshooting Index 27 Care and Maintenance 28 Cleaning 28 Refer All Servicing to Alesis 28 Obtaining Repair Service 29 Customers outside the USA and Canada 29 SPECIFICATIONS 30 INDEX 34...
... Operation 20 OPERATION 21 Front Panel Controls 21 Volume Controls 21 On-Off Switch 21 Mute Switch 21 Protect/Clip Indicators 22 Meters (RA300 and RA500 only 22 Back Panel Controls 22 AC Voltage Switch 22 Stereo/Bridged Mono Switch 22 Checking For Proper Polarity 22 Using the RA150 as a Headphone... Setting the Gain Properly 25 Output Relays/Thermal Cycling 26 TROUBLESHOOTING 27 Troubleshooting Index 27 Care and Maintenance 28 Cleaning 28 Refer All Servicing to Alesis 28 Obtaining Repair Service 29 Customers outside the USA and Canada 29 SPECIFICATIONS 30 INDEX 34...
User Manual
Page 4
... the RA150/300/500 to a variety of contents to look up and trying it up specific functions. This section explains how to read this Alesis RA150, RA300, or RA500™ Reference Series power amplifier. This chapter contains troubleshooting tips and service information should use , please read through the entire manual once carefully...
... the RA150/300/500 to a variety of contents to look up and trying it up specific functions. This section explains how to read this Alesis RA150, RA300, or RA500™ Reference Series power amplifier. This chapter contains troubleshooting tips and service information should use , please read through the entire manual once carefully...
User Manual
Page 9
...The output connectors are also used in all ambient and load conditions. Output from the differential amplifiers are optimized for purchasing an Alesis Reference Series power amplifier, one of active circuitry that a power amplifier is employed to automatically null DC output voltage offsets. Emphasis...DC servo circuit is a high-current, high-power device and should be treated with respect and care. The Alesis models RA150, RA300, and RA500 provide extremely accurate sonic quality as well as measured specifications, but their conservative design and careful attention to balanced ...
...The output connectors are also used in all ambient and load conditions. Output from the differential amplifiers are optimized for purchasing an Alesis Reference Series power amplifier, one of active circuitry that a power amplifier is employed to automatically null DC output voltage offsets. Emphasis...DC servo circuit is a high-current, high-power device and should be treated with respect and care. The Alesis models RA150, RA300, and RA500 provide extremely accurate sonic quality as well as measured specifications, but their conservative design and careful attention to balanced ...
User Manual
Page 12
... or commercial power outlets will void the warranty. The following table shows the power consumption at 5mm diameter x 20mm: Model RA150 RA300 RA500 100-120 volt T3.15AL250V T6.3AL250V T10AL250V 220-240 volt T1.6AL250V T3.15AL250V T5AL250V The fuse will be much less. 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 the result that when multiple devices...
... or commercial power outlets will void the warranty. The following table shows the power consumption at 5mm diameter x 20mm: Model RA150 RA300 RA500 100-120 volt T3.15AL250V T6.3AL250V T10AL250V 220-240 volt T1.6AL250V T3.15AL250V T5AL250V The fuse will be much less. 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 the result that when multiple devices...
User Manual
Page 13
...help exhaust the hot air from 0° C to +50° C (32° F to fill the spaces, but Alesis cannot guarantee that heat is crucial for the RA500), placed on a shelf, tucked away in smaller studios; However, sustained high-temperature operation sufficient to avoid coupling AC-borne interference into...ambient temperatures from within the rack. But the RA150/300/500 must be unusually susceptible to mount it , keep in use . • Alesis Reference amplifiers are well shielded; When wiring a rack, it is allowed to do its heat sinking is good installation practice to route all ...
...help exhaust the hot air from 0° C to +50° C (32° F to fill the spaces, but Alesis cannot guarantee that heat is crucial for the RA500), placed on a shelf, tucked away in smaller studios; However, sustained high-temperature operation sufficient to avoid coupling AC-borne interference into...ambient temperatures from within the rack. But the RA150/300/500 must be unusually susceptible to mount it , keep in use . • Alesis Reference amplifiers are well shielded; When wiring a rack, it is allowed to do its heat sinking is good installation practice to route all ...
User Manual
Page 18
To connect a balanced line output to feed the RA150/300/500: You have the RA300 or RA500 amplifier, you may keep any ground potential difference between the mixer and the RA150/300/500 means one less possibility for ground loops and hum ..., both balanced lines feed a differential amplifier input or transformer that responds to the difference 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 a shielded phono-to 1/4" TRS...
To connect a balanced line output to feed the RA150/300/500: You have the RA300 or RA500 amplifier, you may keep any ground potential difference between the mixer and the RA150/300/500 means one less possibility for ground loops and hum ..., both balanced lines feed a differential amplifier input or transformer that responds to the difference 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 a shielded phono-to 1/4" TRS...
User Manual
Page 35
...total harmonic distortion. The input connectors shall be 75 watts per channel (RA150), 150 watts per channel (RA300) or 250 watts per channel (RA500) into an 8-ohm load when operated in -rush limiters. The power supplies of the amplifier shall be 3-conductor 1/4" TRS jacks mounted on ... the output stage for high reliability under adverse physical and electrical conditions. RA150/300/500 Reference Manual Specifications The chassis shall be an Alesis RA150/300/500 Reference Series power amplifier. 33 The amplifier shall be rack mountable in a standard 19" EIA equipment rack. The ...
...total harmonic distortion. The input connectors shall be 75 watts per channel (RA150), 150 watts per channel (RA300) or 250 watts per channel (RA500) into an 8-ohm load when operated in -rush limiters. The power supplies of the amplifier shall be 3-conductor 1/4" TRS jacks mounted on ... the output stage for high reliability under adverse physical and electrical conditions. RA150/300/500 Reference Manual Specifications The chassis shall be an Alesis RA150/300/500 Reference Series power amplifier. 33 The amplifier shall be rack mountable in a standard 19" EIA equipment rack. The ...