Mackie HD1501 ユーザーズマニュアル

The HD1501 has two female XLR inputs that accept

balanced line-level signals. When connecting a balanced 
signal, be sure it’s wired per AES (Audio Engineering 
Society) standards:

XLR  

Pin 1 – Shield (Ground) 
Pin 2 – Hot (+)    
Pin 3 – Cold (–)

There are also two male XLR connectors on the

HD1501 labeled full range. These are also wired    
according to the AES standards listed above. 

The full range connectors allow you to connect  

several HD1501’s. Simply plug the signal source    
(e.g., mixer output) into the HD1501 input jack, and 
patch that subwoofer’s full range jack to the next    
subwoofer’s input jack, and so on, daisy-chaining  
multiple subwoofers. 

There is a limit to how many you can  
daisy-chain together. A general rule is to 
maintain a load impedance ten times or 
more than the source impedance to prevent 
excessive loading on the source. For exam-

ple, if your mixer has an output impedance of 120 ohms, 
then you can daisy chain up to nine HD1501s. This is 
a load of 1222 ohms (HD1501 input impedance=11 
kohms; 9 of these in parallel=1222 ohms). Since  
microphones typically have a higher output impedance, 
you should limit daisy-chaining from a mic source to 
two HD1501s (assuming that loudspeakers are also  
connected to the subwoofers).

For warranty service, refer to the warranty  

information on page 17.

Non-warranty service for Mackie products is  

available at a factory-authorized service center. To 
locate the nearest service center, visit www.mackie.com, 
click “Support” and select “Locate a Service Center.” 
Service for Mackie products living outside the United 
States can be obtained through local dealers or  
distributors.

If you do not have access to our website, you may call 

the Tech Support department at 1-800-898-3211,
Monday-Friday, during normal business hours, Pacific 
Time, to explain the problem. Tech Support will tell you 
where the nearest factory-authorized service center is 
located in your area.

Owner’

s Manual