American Audio Amplifier ELX2000 User Manual

							©American Audio®  -  www.americanaudio.us  -  ELX Series Power Amplifier User Manual  Page 11
PROTECTION:
Thermal Protection -  If  the  amplifiers  operating  temperature  runs  over  105°C  (221°F)  the  amplifier  will  go  into  thermal  protection  to 
prevent  damage  from  over  heating.  The  Protect  Indicator  LED  located  on  the  front  of  the  amp  will  light  up,  and  the  output  signal  will 
be muted. The fans will start to run at max speed to allow the amp to return to a safe operating temperature. To prevent amplifier over 
heating, make sure your input signal is not clipping (Red LED indicator located at the front), and that you are not overdriving the amp. 
Make  sure  not  block  the  airflow  input  and  output  vents  and  always  use  the  amp  in  an  enviroment  that  is  no  higher  than  30°C  (86°F). 
Never use a speaker load that exceeds power or impedance ratings.   
Clip Limiter - When the input signal overloads, the “CLIP LED’s” will indicate a signal overload, at this time, the master volume should 
be  lowered  to  reduce  distortion.  If  the  input  gain  level  is  not  reduced  the  built-in  limiter  will  activate.  During  signal  overload,  the  lim-
iter will reduce the input audio signal enough to minimize the amount of clipping. A limiter takes the gain of an overloading signal and 
reduces  it,  the  reduction  in  gain  reduces  distortion  that  can  cause  damage  to  your  speakers  and  amplifier.  During  normal  operation 
below clipping, and momentary clips on peaks, the limiter does not affect the audio signal and is inaudible. It will allow brief clipping of \
peaks  and  will  only  activate  when  continuous,  hard  clipping  occurs.  During  excessive  clipping  the  limiter  will  reduce  the  audio  signal 
enough to minimize the amount of clipping. When the input signal decreases enough that clipping ends, the limiter will deactivate and 
cease its gain reduction. The limiter has a fixed threshold and can not be adjusted. NOTE: If input signal is clipping or exceeds linear-
ity working range of input circuit, then the Clip Limiter will not work.
Short Circuit Protection - The ELX Series amplifiers all come with built-in Short Circuit Protection. If a short circuit is detected on 
the  output  signal,  the  Clip  and  Protect  Indicator  LEDs  will  both  glow. This protection makes the output transistors work at a safe 
range and there will be no output from the amp. The amp will recover after 10 seconds after the terms of the short circuit have been 
removed.
AC Local Power Protection - If the AC power voltage is lower than 70% of the required voltage, the power supply will turn off auto-
matically until the power voltage is normal. NOTE: The correct AC main voltage is listed above the Power Cord input. Connecting to 
the wrong voltage is dangerous and may damage the amplifier. Always be sure the source voltage for your areas matches the required 
voltage for your amplifier.
DC Protection - If the output signal has a larger DC voltage (=2.6V), in order to protect the speaker, the DC protection circuit will start-
up. When the DC protection circuit starts up, the Protection Indicator LED (1) will glow and the amp will go mute.  
Safe Power Levels at Different Output Loads:
8-Ohm Loads:  The  amplifier  can  operate  at  practically  any  power  level  without  risk  of  overheating.  However,  if  it  is  pushed  hard 
enough to continually light the “CLIP” indicator, the amplifier’s average output power can reach 150 watts.
4-Ohm Loads: If the “CLIP” indicator flashes occasionally, the amplifier is approaching its maximum long-term power capacity. If it is 
lit about half the time, the amplifier channel will probably go into thermal protection within a few minutes. 
						

							©American Audio®  -  www.americanaudio.us  -  ELX Series Power Amplifier User Manual  Page 12
AMPLIFIER FEATURES:
LINK - Link will allow the user to daisy-chain one amplifiers signal input int\
o another amplifier. Plug the signal source outputs into the 
first amplifier’s input, patch from the amplifier’s LINK jacks to the next amplifier’s input, and so on, daisy-chaining as many amplifiers 
as there is no excessive level loss.
OPERATING VOLTAGE (AC MAINS) - The correct AC main voltage is listed above the Power Cord input. Connecting to the wrong 
voltage is dangerous and may damage the amplifier.
GAIN CONTROLS - The gain controls are located on the front panel and are calibrated in 2dB of attenuation from full gain. It is best to 
adjust the amplifier so no “hissing” is heard from speakers with no music being played, this will ensure the lowest possible distortion 
during normal operation.
LED INDICATORS - Each channel has eight LEDS. The bottom LED is the channel power indicator. The next five LEDs indicate signal 
level activity. One red LED indicates signal clipping and the other red LED indicates protections mode for shorts/ overload. 
						

							THRU
THRU
©American Audio®  -  www.americanaudio.us  -  ELX Series Power Amplifier User Manual  Page 13
TYPICAL MONO BRIDGE SET-UP
SPEAKERS
8 OHM MINIMUM
TYPICAL STEREO OUTPUT CONNECTIONS
SPEAKERS
4 OHM MINIMUM
SPEAKERS
4 OHM MINIMUM
Use Channel 1 Input Only
X
Use Speakon Connections
Use the two positive binding post 
termainals (red) for speaker output.
Figure 10
Figure 9
Set the Operation Mode switch to Bridge (BTL) 
						

							©American Audio®  -  www.americanaudio.us  -  ELX Series Power Amplifier User Manual  Page 14
The  ELX  Series  carries  a  one  year  limited  warranty.  We  recommend  you  fill  out  the  enclosed  warranty  card  to  validate  your  purchase.  All 
returned service items whether under warranty or not, must be freight pre-paid and accompany a R.A. (return authorization) number. If the 
mixer is under warranty, you must provide a proof of purchase invoice. You may obtain a R.A. number by contacting our customer support 
team on our toll free number. Please contact American Audio® customer support at (800) 322-6337 for a R.A. number. All package 
not displaying a R.A. number on the outside of the package will be returned to the shipper.
1-YEAR LIMITED WARRANTY
A.  American Audio® hereby warrants, to the original purchaser, American Audio® products to be free of manufacturing defects in material and work-
manship for a period of 1 Year (365 days) from the date of purchase. This warranty shall be valid only if the product is purchased within the United 
States of America, including possessions and territories. It is the owne\
r’s responsibility to establish the date and place of purchase by acceptable 
evidence, at the time service is sought. 
B.  For warranty service, send the product only to the American Audio® factory. All shipping charges must be pre-paid. If the requested repairs or 
service (including parts replacement) are within the terms of this warranty, American Audio® will pay return shipping charges only to a designated 
point within the United States. If the entire instrument is sent, it must be shipped in its original package. No accessories should be shipped with 
the product. If any accessories are shipped with the product, American Audio® shall have no liability whatsoever for loss of\
 or damage to any such 
accessories, nor for the safe return thereof.  
C.  This warranty is void if the serial number has been altered or removed; if the product is modified in any manner which American Audio® con-
cludes, after inspection, affects the reliability of the product; if the product has been repaired or serviced by anyone other than the American Audio® 
factory unless prior written authorization was issued to purchaser by American Audio®; if the product is damaged because not properly maintained 
as set forth in the instruction manual. 
D.  This is not a service contract, and this warranty does not include maintenance, cleaning or periodic check-up. During the period specified above, 
American Audio® will replace defective parts at its expense, and will absorb all expenses for warranty service and repair labor by reason of defects 
in material or workmanship. The sole responsibility of American Audio® under this warranty shall be limited\
 to the repair of the product, or replace-
ment thereof, including parts, at the sole discretion of American Audio®. All products covered by this warranty were manufactured after January 1, 
1990, and bear identifying marks to that effect. 
E.  American Audio® reserves the right to make changes in design and/or improvements upon its products without any obligation to include these 
changes in any products theretofore manufactured. 
F.  No warranty, whether expressed or implied, is given or made with respect to any accessory supplied with products described above. Except to 
the  extent  prohibited  by  applicable  law,  all  implied  warranties  made  by  American  Audio®  in  connection  with  this  product,  including  warranties  of 
merchantability or fitness, are limited in duration to the warranty period set forth above. And no warranties, whether expressed or implied, including 
warranties of merchantability or fitness, shall apply to this product after said period has expired. The consumer’s and or Dealer’s sole remedy shall 
be such repair or replacement as is expressly provided above; and under no circumstances shall American Audio® be liable for any loss or damage, 
direct or consequential, arising out of the use of, or inability to use, th\
is product.  
G.  This warranty is the only written warranty applicable to American Au\
dio® products and supersedes all prior warranties and written descriptions 
of warranty terms and conditions heretofore published.  
						

							©American Audio®  -  www.americanaudio.us  -  ELX Series Power Amplifier User Manual  Page 15
NOTES 
						

							American Audio®  -  www.americanaudio.us  -  ELX Series Power Amplifier User Manual  Page 16
ELX Series SPECS
Power supply: AC 100V, 50/60Hz (Japan)
      AC 110V, 60Hz (Colombia)
      AC 120V, 60Hz (U.S.A. and Canada)
      AC 127V, 60Hz (Mexico)
      AC 220V, 50Hz (Chile and Argentina)
      AC 220V, 60Hz (Philippines and Korea)
      AC 230V, 50Hz (Europe, New Zealand, South Africa, and Singapore)
      AC 240V, 50Hz (Australia and U.K.)
MODEL:                                               ELX 2000                                                                     ELX 3000                                                
Output Power:   2 x 90W RMS per Channel @ 8 Ohms, 1KHz, 1% THD    2 x 180W RMS per Channel @ 8 Ohms, 1kHz, 1% THD   
       2 x 150W RMS per Channel @ 4 Ohms, 1kHz, 1% THD   2 x 250W RMS per Channel @ 4 Ohms, 1kHz, 1% THD 
          300W RMS @ 8 Ohms, 1kHz, 1% THD            500W RMS @ 8 Ohms, 1kHz, 1% THD     
        (Bridge Mode, Mono)                 (Bridge Mode, Mono)                       
Total Harmonic          Less Then 0.1% (20Hz - 20kHZ @ 8 Ohms          Less Then 0.1% (20Hz - 20kHZ @ 8 Ohms   
Distortion (THD):                                                                          
Frequency                  20Hz to 20KHz +1.0dB                                                         20Hz to 20KHz +1.0dB    
Response:                                 
Damping Factor            >60                                >60            
(f=1 KHz at 8 Ω):  
Slew Rate:        20V per usec              20V per usec
Impedance:        20K Ohms Balanced            20K Ohms Balanced
S/N Ratio:       >95dB                                                   >95dB
Crosstalk @ rated:       >65dB                                         >65dB        
power output 
(8 Ω at 1 kHz)                               
Dimensions     19” x 13.75” x 3.5”                     19” x 13.75” x 3.5”          
(LxWxH):     483 x 345 x 88mm (2 Rack Mount Spaces)      483 x 345 x 88mm (2 Rack Mount Spaces)
Weight:     23lbs. / 10Kgs                     25lbs / 11Kgs             
						

							American Audio®  -  www.americanaudio.us  -  ELX Series Power Amplifier User Manual  Page 17
ELX Series SPECS
Power supply: AC 100V, 50/60Hz (Japan)
      AC 110V, 60Hz (Colombia)
      AC 120V, 60Hz (U.S.A. and Canada)
      AC 127V, 60Hz (Mexico)
      AC 220V, 50Hz (Chile and Argentina)
      AC 220V, 60Hz (Philippines and Korea)
      AC 230V, 50Hz (Europe, New Zealand, South Africa, and Singapore)
      AC 240V, 50Hz (Australia and U.K.)
MODEL:                                               ELX 4000                                                                                                                     
Output Power:   2 x 260W RMS per Channel @ 8 Ohms, 1KHz, 1% THD      
       2 x 400W RMS per Channel @ 4 Ohms, 1kHz, 1% THD                
        800W RMS @ 8 Ohms, 1kHz, 1% THD                         
     (Bridge Mode, Mono)                                        
Total Harmonic          Less Then 0.1% (20Hz - 20kHZ @ 8 Ohms              
Distortion (THD):                                                                         
Frequency                  20Hz to 20KHz +1.0dB                                                             
Response:                                
Damping Factor            >150                                            
(f=1 KHz at 8 Ω):  
Slew Rate:        20V per usec             
Impedance:        20K Ohms Balanced           
S/N Ratio:       >95dB                                                   
Crosstalk @ rated:       >65dB                                                 
power output 
(8 Ω at 1 kHz)                               
Dimensions     19” x 13.75” x 3.5”                               
(LxWxH):     483 x 345 x 88mm (2 Rack Mount Spaces)     
Weight:     27lbs. / 12Kgs                                   
						

							©American Audio® World Headquarters:
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Tel: 323-582-3322  Fax: 323-725-6100
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Tel: +31 45 546 85 00 / Fax: +31 45 546 85 99