Bottom Speaker sounds blown

Hi Ames,

On your phone the lower speaker is integrated with the vibration motor, so you'd be replacing both of them. I've taken a look at it and as far as phone repairs go, it's a fairly simple fix. iFixit doesn't have a guide specifically for that repair, but the charging port guide has all the information you need, since you have to take the speaker/vibrator assembly out to get to the charging port.

Samsung Galaxy S23 Ultra USB-C Port and Charging Board Replacement - iFixit Repair Guide

Basically you just have to follow the guide through to Step 25 and stop there. The guide shows taking out the wireless charging coil assembly and the speaker together, but you can also unplug the charging coil from the speaker before removing it if you want. I would suggest taking out the charging coil first, then moving to Step 26 to disconnect the battery before proceeding to removing the speaker. The Spanish site Nadie Me Llama Gallina has a guide specifically for that particular repair, but the only catch is that it is, as you might guess, written in Spanish. If you use it with the Chrome browser's translation feature it is quite usable and well written, though.

Manuals / Samsung Galaxy S23 Ultra / Speaker Module with Built-in Haptic Vibrator - Nobody Calls Me Chicken

I personally prefer their guide simply due to the order of operations, but either one will get you through the job. I would strongly suggest you take the warning on Step 8 of the iFixit guide to heart; the back glass is indeed thin and easy to break (I speak from experience), so work slowly and use plenty of heat to keep that adhesive soft. If it's resisting don't force it; apply more heat and try again.

God luck and let us know how it all turns out!