u/Civil-Raisin-2741

I have 2 slots, I want to make these two have the same length (the 20mm) so that if I resize one the other is resized too. I also want them to do this for the radius and all other properties.

Another problem I have is that I'd like to have both slots aligned vertically to the center of the rectangle (50mm/2) but I can't find a way to do that. If I use the symmetric constraint on the top 2 edges and the top radius of the top slot then the radius is attached to the top line of the rectangle (in the middle), but I want it to be 10mm away from it, not on the line itself.

I wanna make the top and bottom slots both 10mm away from the top and bottom lines of the rectangle, but how to enforce that? I don't wanna hardcode every single number when it's symmetrical

https://preview.redd.it/4j8doaz7fk0h1.png?width=456&format=png&auto=webp&s=f85cc4f0f636b2b8c746f3376eb402c75b9c843b

Edit: this is how I can do it, but there's many duplicate things, how to not do this? I watched many videos on constraints but I feel dumb as hell not figuring it out. I would like for some distances to be dynamic, for example if I increase width from 50mm to 60mm the slots should be 30mm away from the edge horizontally not 25mm as it's hardcoded now

https://preview.redd.it/kx1a70spgk0h1.png?width=514&format=png&auto=webp&s=736b85f75f9b3120efbcf38988456f1c5224d6fb

I would like to make a few holes in the back of the speakers to put them on a wall arm but the 5 holes in the back seem to have plastic rivets instead of screws, what can I do?

Is there no way to tear these apart without breaking something?

Also, would making a few holes in the back change the audio quality? What about holes on the side with a different mounting arm?

front of speakers

rear of speakers

close up of one of the 5 holes

Thank you

Total newbie here. Got for free two Bose 141 speakers but I don't have the stuff to make them run, what's the absolute cheapest I can spend to make these work without too much static noise and acceptable audio quality?

Speakers are rated 50W max each. I think I need a >=100W amp and power supply. I found some amp options:

• 4$ TPA3166 board 120Wx2 how?
• 20$ TPA3251 board 220Wx2

If I understand correctly: I can get one of these boards, plug the speakers and power supply, plug the board to the pc, and it should work?

I don't really want to spend more than 40$ total for running these speakers as they're not good.

Thanks