Coaxial Speaker OWNER'S MANUAL SPL 55
5 
INSTALLING 
THE SPL 55 
The SPL 55 can be mounted on the front or rear of 
a panel; gaskets are provided for both options. The 
bolt hole configuration will fit a variety of American, 
Asian and European OEM patterns making it ideal 
for direct placement. Best performance is achieved 
when the speaker is securely mounted to a door 
panel or rear deck. There should be no gaps 
between the speaker and the mounting surface, as 
this will impair its low frequency performance. Be 
certain that both the panel and the speaker are 
securely mounted to prevent unwanted vibration. 
1) Mark the speaker location by using the 
template provided.  
2) Cut the opening and debur the edges with a 
file. 
3) Hold the speaker in place against the mounting 
surface and mark the mounting bolt holes. 
6) Drill the appropriate size hole for the screws 
provided. 
7) Place the SPL 55 into the trim ring, make the 
speaker wire connections, then install the 
speaker/trim ring assembly to the panel using 
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