Alesis RA150 Support and Manuals
Get Help and Manuals for this Alesis item
View All Support Options Below
Free Alesis RA150 manuals!
Problems with Alesis RA150?
Ask a Question
Free Alesis RA150 manuals!
Problems with Alesis RA150?
Ask a Question
Alesis RA150 Videos
Alesis RA150 Reference Amplifier - DJkit.com
Duration: :29
Total Views: 670
Duration: :29
Total Views: 670
Alesis RA-150 Amplifier How To Use Price And Connection IN HINDI 9811204032 / 9717618838
Duration: 8:49
Total Views: 898
Duration: 8:49
Total Views: 898
Alesis RA150 Amplifier Repair
Duration: 2:11
Total Views: 314
Duration: 2:11
Total Views: 314
Alesis RA150 Amplifier repair
Duration: 1:55
Total Views: 1,373
Duration: 1:55
Total Views: 1,373
Popular Alesis RA150 Manual Pages
User Manual - Page 2
....
1633 26th Street
Santa Monica, CA
90404
USA
Do not use this address for repair service. All rights reserved.
"RA150/300/500" and "Reference Series" are trademarks of Alesis Studio Electronics, Inc. Telephone: E-Mail: Website:
800-5-ALESIS (800-525-3747) support@alesis.com http://www.alesis.com Alesis RA150-500 Reference Manual
© Copyright 2000, Alesis Studio Electronics, Inc.
User Manual - Page 3
...the RA150 as a Headphone Amplifier.......23 Choosing the Correct Speakers 23 About Ground Loops 24 System Setup and Testing 25
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...
User Manual - Page 4
... the RA series amplifier.
Chapter 1: Introduction. This chapter gives detailed instructions for purchasing this Alesis RA150, RA300, or RA500™ Reference Series power amplifier. When something important appears in the manual, an icon (like the one -page guide to hooking it out. Chapter 4: Troubleshooting. HOW TO USE THIS MANUAL
This manual is vital when operating the RA150/300...
User Manual - Page 9
... for purchasing an Alesis Reference Series power amplifier, one of the external chassis protects rear panel connectors (except RA 150).
The design of the most advanced and highest value amplifiers available. All units have XLR connectors. The output connectors are a dual differential type with an external voltage selection switch. Output from the differential amplifiers are coupled to...
User Manual - Page 10
... will be noted individually.
8
RA150/300/500 Reference Manual Introduction: Chapter 1
Reference Series Features-
• DC coupled, fully complementary discrete amplifier topology
• Actively biased, dual differential input stages
• Wide bandwidth, low distortion design • Fully protected from all fault conditions • LED output level metering (RA 300, RA
500) • Front...
User Manual - Page 11
The shipping carton should contain the following items:
• RA150/300/500 amplifier
• This instruction manual
• Power cable
• Alesis Warranty card
POWER CONSIDERATIONS
THE AC CORD AND GROUNDING
The RA150/300/500's IEC-spec AC cord (do not substitute any shipping claims; The ground connection is an important safety feature designed to keep the chassis ...
User Manual - Page 12
....15AL250V T5AL250V
The fuse will be adequate. (A standard 15-amp circuit is the capacity of the correct type only; if you must also replace the power fuse with 120V power (as
RA150/300/500 Reference Manual Unfortunately, some clubs are the "Slo-Blo" type, sized at rated output:
Model
RA150 RA300 RA500
Rated AC consumption 270 watts 500 watts 840...
User Manual - Page 22
... amplifier with two speakers, in a biamped or triamped setup, bridged mono mode will suck air away from the top of correctly hooking up the output cables. But if you are 8 ohms and if they were wired in stereo mode, because most cases you need.
20
RA150/300/500 Reference Manual
In a typical PA system with twice the power...
User Manual - Page 23
...) when making input or output connections to turn off the RA150/300/500, then chase down when turning on or turn the amplifier off as described next. RA150/300/500 Reference Manual
21
Always turn the volume controls all the way down the source of the problem.
So, if the RA150/300/500 power switch is left on and...
User Manual - Page 24
...RA150/300/500 Reference Manual The orange PROTECT LEDs come on page 10. BACK PANEL CONTROLS
AC VOLTAGE SWITCH
Located near the power inlet is a recessed switch that allows voltage conversion from the loudspeaker as you connect the battery, and another as a two-channel amplifier... problem is operating 33 dB or less below rated output. If the speaker cone moves in . Always check your output ...
User Manual - Page 25
... reflected sounds from the engineer's ears.
Because of its moderate power rating, excellent fidelity, and lack of the left and right amplifier channels. RA150/300/500 Reference Manual
23 This will tie together the grounds of a noise-generating fan, the RA150/300/500 "Reference Amplifier" excels in driving reference near maximum.
Since few feet from the room. For best...
User Manual - Page 28
... RA300/500, the PROTECT indicators of cooler air.
26
RA150/300/500 Reference Manual You must ensure that the heat sinks of the amplifier are not blocked and can remove this case, the PROTECT indicators and POWER indicators will shut the unit off the power and check for problems with the wiring, input level, or ventilation of...
User Manual - Page 29
... set improperly Amplifier accidentally set to reliable levels. Try plugging a known line-level source to the amplifier inputs to a different electrical circuit;
Time for assistance. 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
Chapter 4: Troubleshooting...
User Manual - Page 30
... IN THE SWITCHES AND CONTROLS! NO USER-SERVICEABLE PARTS INSIDE.
28
RA150/300/500 Reference Manual However, should be overheating and cycling through thermal protect mode
Check for short circuits in and out
Unit shuts down
Defective loudspeaker drivers
Replace drivers
In a multi-amplified system with a low level crossover network, bad outputs from the network, or improperly connected...
User Manual - Page 35
... to automatically null DC output voltage offsets. RA150/300/500 Reference Manual
Specifications
The chassis 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 bridged mono mode with no fan mounted inside the amplifier. The power output of delivering full rated power at full clockwise...
Alesis RA150 Reviews
We have not received any reviews for Alesis yet.