Only one model of speaker is supported by Qolsys at this time.
There is a single model of speaker which you may pair with your IQ Panel:  Anker Soundcore A3102,A3108,A3109  https://www.anker.com/products/variant/soundcore-bluetooth-speaker/A3102011 Anker made some changes on with firmware with this model that can cause an issue with the panels voice/chime annunciation.
The speaker will replace the voice/chime sounds on the IQ panel 2.  It can be used to amplify the sound beyond what the IQ panel 2 speaker is capable of. With the firmware changes on the A3102 model we suggest using the newer A3108 and A3109 Models.