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
.... Though we recommend you want to read this information is divided into the following sections describing the various functions and applications for purchasing this Alesis RA150, RA300, or RA500™ Reference Series power amplifier. Chapter 2: Connections. To take time to start using the RA150/300/500 right away, here's a one on the...
.... Though we recommend you want to read this information is divided into the following sections describing the various functions and applications for purchasing this Alesis RA150, RA300, or RA500™ Reference Series power amplifier. Chapter 2: Connections. To take time to start using the RA150/300/500 right away, here's a one on the...
User Manual
Page 9
...and disconnect the loudspeaker load. Even if you are coupled to automatically null DC output voltage offsets. 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 electronic... high reliability under all models. Output from the differential amplifiers are an audio veteran, we urge you for purchasing an Alesis Reference Series power amplifier, one of the amplifiers utilize precision electronically-balanced input circuitry for maximum performance and reliability. Thank ...
...and disconnect the loudspeaker load. Even if you are coupled to automatically null DC output voltage offsets. 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 electronic... high reliability under all models. Output from the differential amplifiers are an audio veteran, we urge you for purchasing an Alesis Reference Series power amplifier, one of the amplifiers utilize precision electronically-balanced input circuitry for maximum performance and reliability. Thank ...
User Manual
Page 12
... power outlets will be much less. 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 not blow unless the...amplifier will void the warranty. Under most important considerations for the RA500) does not represent the total AC power consumption by a recessed switch on transient peaks; Connections: Chapter 2 120 VOLT/230 VOLT OPERATION The Alesis Reference Series amplifiers feature dualvoltage operation. The AC input voltage ...
... power outlets will be much less. 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 not blow unless the...amplifier will void the warranty. Under most important considerations for the RA500) does not represent the total AC power consumption by a recessed switch on transient peaks; Connections: Chapter 2 120 VOLT/230 VOLT OPERATION The Alesis Reference Series amplifiers feature dualvoltage operation. The AC input voltage ...
User Manual
Page 13
... lighting, plug the RA150/300/500 into the low level units, which may sometimes be necessary for portable or road use. • Alesis Reference amplifiers are well shielded; However, sustained high-temperature operation sufficient to cause limiting will adversely affect the sound quality, and eventually the ... unit may be unusually susceptible to 80% non-condensing humidity. But the RA150/300/500 must be enough airspace around the amplifier for the RA500), placed on a shelf, tucked away in smaller studios; If necessary, use . There should be at least one side of the circuitry....
... lighting, plug the RA150/300/500 into the low level units, which may sometimes be necessary for portable or road use. • Alesis Reference amplifiers are well shielded; However, sustained high-temperature operation sufficient to cause limiting will adversely affect the sound quality, and eventually the ... unit may be unusually susceptible to 80% non-condensing humidity. But the RA150/300/500 must be enough airspace around the amplifier for the RA500), placed on a shelf, tucked away in smaller studios; If necessary, use . There should be at least one side of the circuitry....
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 connect it more expensive balanced connector is the XLR type, most commonly sold as an "antenna" and pick up RF fields, AC ...) 1 (float) 3 (cold) 1/4 " phone jack If you have an XLR input, you have two options: TRS-to-TRS cable Most modern mixing consoles, such as the Alesis Studio 32, feature balanced outputs on page 17.) To connect an unbalanced source to eliminate a ground loop even though the source is balanced. (See Figure...
To connect a balanced line output to feed the RA150/300/500: You have the RA300 or RA500 amplifier, you may connect it more expensive balanced connector is the XLR type, most commonly sold as an "antenna" and pick up RF fields, AC ...) 1 (float) 3 (cold) 1/4 " phone jack If you have an XLR input, you have two options: TRS-to-TRS cable Most modern mixing consoles, such as the Alesis Studio 32, feature balanced outputs on page 17.) To connect an unbalanced source to eliminate a ground loop even though the source is balanced. (See Figure...
User Manual
Page 35
... shall be provided on the back panel. Additional unbalanced RCA/ phono inputs shall also be mounted on the back panel. [RA300 and RA500: There shall also be provision for female XLR input jacks on /off transitions. Output connectors shall be of high quality and mechanical construction... type biased for class AB operation, fully rated for excessive DC offset, short circuits and thermal overload. The amplifier shall be an Alesis RA150/300/500 Reference Series power amplifier. 33 Architect's and Engineer's Specifications The power amplifier shall be a two-channel unit capable of...
... shall be provided on the back panel. Additional unbalanced RCA/ phono inputs shall also be mounted on the back panel. [RA300 and RA500: There shall also be provision for female XLR input jacks on /off transitions. Output connectors shall be of high quality and mechanical construction... type biased for class AB operation, fully rated for excessive DC offset, short circuits and thermal overload. The amplifier shall be an Alesis RA150/300/500 Reference Series power amplifier. 33 Architect's and Engineer's Specifications The power amplifier shall be a two-channel unit capable of...