Dc audio help

[ray60218 10+ year member]

Just got this sub trying to figure out. Was told it was a xl m1.

I'm thinking a level 4

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[Silverado SS 10+ year member]

It is an M1 of some sort due to no cooling holes but can't tell you the "level"

 

[Jeffdachef 5,000+ posts]

@mylows10

 

[mylows10 5,000+ posts]

Measure the slug width 3/4" is a xl and 1" is a lvl 4

 

[SPLaudio 5,000+ posts]

its a xl