How to open bookshelf speaker

Yardman 49

Hello all:

I just got in my new R150s. Due to how I'm going to hang them, I need to get inside the cabinets (The R150s seem to be very similar in construstion to the Monitor 30s, just smaller in depth.)

Anyway, as can be seen in the following photos, the front of the speaker cabinet has four mounting holes for the grill posts:






These "holes" actually appear to be some sort of Torx-head screw.
- Are these used to fasten the back of the cabinet to the box?
- Can I safely remove them to open the back of the speaker cabinet?
- And can this be done without damage to the internal wiring and components?

Thank you for any help with this.

Frank

ben62670

The best way to do this would be to remove the woofer.

michael_w

The grille post holes you're talking about more than likely are just holes in the cabinet with grille post inserts and do not have anything to do with the structure of the cabinet. That back piece is probably tacked and glued in and then covered with the black vinyl. I believe, as said above, the only ways to get into the cabinet are to remove the tweeter, woofer and binding posts.

Yardman 49

michael_w wrote: »

The grille post holes you're talking about more than likely are just holes in the cabinet with grille post inserts and do not have anything to do with the structure of the cabinet. That back piece is probably tacked and glued in and then covered with the black vinyl. I believe, as said above, the only ways to get into the cabinet are to remove the tweeter, woofer and binding posts.

Hello Michael:

Thanks for the feedback. I called Polk Tech Support and they confirmed that the way to get into this cabinet is to remove the woofer. They said that the driver connections are just push on, so there should be no problem removing it. That is what I need to know to accomplish what I need.

I also asked about how it would effect the warranty by opening the cabinet, drilling some through-holes and installing mounting hardware. They replied that although this would void the cabinet warranty, it would not effect the warranty on the driver, tweeter, or crossover. This is also fine for my situation.

Thanks again and best wishes,

Frank

michael_w

Yes, it is all quite simple. Just be careful to not slip and poke a screwdriver through the surround on the woofer and you should be fine. With the hex bolts it's that much easier to do it properly too.