Owner manual

mtx.com/marine

Step 4 – Run speaker wire thru the bar and leave

8" – 12" of speaker wire hanging out of the hole.

Next place rubber inserts into the enclosure and

bracket. Please select the correct insert size

according to the insert selection guide on page 3.

Place round foam gaskets on to bracket standoffs.

Place enclosure in desired location and pull wire

through wire hole. Place top bracket on top of the

bar above the enclosure. Start to thread the bracket

screws into bracket from inside the enclosure.

Tighten front and back screws evenly, make sure to

tighten until bracket holds tight and the enclosure

does not move.

Step 5 – Connect speaker wire to the input on the

speaker, making sure to keep the polarity correct.

Place woofer into the enclosure with the badge

closest to the top. Make sure to tuck the wires

into the enclosure so they do not get caught in the

opening. Screw in the 4 speaker bolts, make sure to

tighten the bolts fully.

NOTE: If bolts are removed after installation,

threadlock must be re-applied.

Step 6 – Connect speaker wire to ampliﬁer, place

boat in water, crank the THUNDER and enjoy.