Ring Alarm System/Siren Sound

I have a Ring alarm system set up in my space including multiple motion sensors, glass break sensors, door taps, etc. and while I'm overall satisfied with the set up, I am very disappointed in the siren sound itself. When we've tested the alarm (yes, it's set to the max volume) it is simply not loud enough. A loud siren in my opinion is key to an effective alarm system, it should be so loud as to scare and deter any intruders. I'm also disappointed that Ring does not offer any sort of additional siren speaker options. I did see there used to be the outdoor siren and dome siren options, but they are no longer available for purchase. Does anyone have any solutions or alternatives in regards to installing louder siren(s) to my Ring alarm system?