+1 on the furniture slides. You can purchase larger ones at Amazon and only use them as needed. Tilt the speaker and slide them under. Take them out when done.
SuperSliders 4724095N Reusable XL Heavy Furniture Movers for Carpet- Quickly and Easily Move Any Item, 9-1/2" x 5-3/4" Brown (4 Pack) https://www.amazon.com/dp/B07B87PMKD/ref=cm_sw_r_cp_api_glt_fabc_DSNZEK9182STWE1E2JXY