American Audio Amplifier XLT Series User Manual

User Instructions
AMERICAN AUDIO®
6122 S. Eastern Ave.
Los Angeles Ca. 90040
1/12
Professional Power Amplifier
XLT Series 

This symbol is intended to alert the user to the presence of non insulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to 
constitute a risk of electric shock to persons.
This symbol is intended to alert the user of the presence of important operating and maintenance (servicing) instructions\
 in the literature accompanying the product.
CAUTION: Risk of the electrical shock - DO NOT OPEN!
CAUTION: To reduce the risk of electrical shock, do not remove...

CAUTION: TO REDUCE THE RISK OF ELECTRIC 
SHOCK, DO NOT REMOVE THE COVER.  
THERE ARE NO USER SERVICEABLE PARTS 
INSIDE.  REFER ALL SERVICE TO YOUR 
AUTHORIZED AMERICAN AUDIO® DEALER.
CAUTION
Do not open -
risk of electric shockFOR  OPTIMUM  PERFORMANCE  AND 
RELIABILITY  DO  NOT  PRESENT  THE  AMPLIFIER 
WITH A SPEAKER LOAD OF LESS THAN 2 OHMS 
OR  ANY  COMBINATION  OF  SPEAKERS  THAT 
TOGETHER ARE LESS THAN 2 OHMS!
USING  ONE  SPEAKER,  IT  MUST  BE  RATED  AT 
4 OR  MORE  OHMS.  USING  ONE  SPEAKER  IN...

Important Precautions
•   To reduce the risk of electrical shock or fire, do not expose this  
   unit rain or moisture.
•   Do not spill water or other liquids into or on to your unit.
•   Do not attempt to operate this unit if the power cord has been  
   frayed or broken.
•   Do not attempt to remove or break off the ground prong from  
   the electrical cord. This prong is used to reduce the risk of elec- 
   trical shock and fire in case of an internal short.
•   Disconnect main power before making...

1. Indicator LEDs -  
Channel Protect Indicator - The red Protect LED will begin to glow 
when the channel goes into protect mode. When the channel goes into 
protect mode all output for that channel will turn off. This is to protect any 
speakers connected to the channel.
Channel Clip Indicator - This red LED will begin to flash when channel 
one begins to overload (clip). At this point channel one will begin to\
 dis-
tort. Under heavy clipping activity lower the channel one gain control to 
reduce the...

Rear Panel
XLT900
Figure 2
8
1715
121110913
14
©American Audio®  -  www.americanaudio.us  -  XLT Series Power Amplifier User Manual  Page 6
8. Channels 1 & 2 Speakon Outputs - Optional speaker output connections. 
Use pins 1+ and 1- of this 4-pole Speakon connector to connect to your s\
peak-
er’s Speakon input jack.
9. Channel 1 & 2 Output Jack/5 way Binding Post - Connect to your speak-
er’s input jack. Red is positive signal and Black is negative signal.
10. Low Pass Filter Switch - This  switch...

Rear Panel
XLT1200, 2000, 
& 2500
16. Channels 1 & 2 Speakon Outputs - Optional speaker output connections. 
Use pins 1+ and 1- of this 4-pole Speakon connector to connect to your s\
peak-
er’s Speakon input jack.
17. Channel 1 & 2 Output Jack/5 way Binding Post - Connect to your speak-
er’s input jack. Red is positive signal and Black is negative signal.
18. Low Pass Filter Switch - This  switch  controls  the  amplifier’s  filter  mode. 
The  amplifier  can  operate  in  two  different  filter  modes;...

OUTPUTS: 
Binding Post -  Connect  your  speakers  to  the  binding  post  outputs  on  the  rear  of  the  amplifier.  The  speaker  wire  may  be  connected 
by bare wire (directly connected, usually for permanent connections). Connections are made to Channels 1 and 2 output’s for stereo 
mode or across the red terminals of Channels 1 and 2 for Mono Bridge Mode. 
Important Notice:  Although  a  speaker  will  operate  with  the  positive  and  negative  leads  plugged  into  either  terminal  on  the...

©American Audio®  -  www.americanaudio.us  -  XLT Series Power Amplifier User Manual  Page 9
Mono Bridge Connections:
Mono bridge operation connections will follow the above descriptions how\
ever, when operating in mono 
bridge operation the speaker connections will run between the two positi\
ve (red) leads. Use channel two pos-
itive output terminal for the negative connection and the channel one po\
sitive output terminal for the positive 
connection.
Stereo Connections Using the Neutrik Speakon...

©American Audio®  -  www.americanaudio.us  -  XLT Series Power Amplifier User Manual  Page 10
SPEAKON ASSEMBLY:  You  will  need  a  pair  of  Neutrik  Speakon®  NL4FC 
connectors.  You  will  also  need  high-quality  two  or  four  conductor  speaker 
cable, a pair of needle-nosed pliers and a 1.5-mm Allen key to assemble the 
Speakon connectors to your speaker wire. To assemble the Neutrik Speakon 
NL4FC connector, complete the following steps:
1. Strip back 3/4-inch of the cable casing. Strip off...