Heavy difficult to move speakers- how do you deal?

I've moved enough heavy speakers in and out of and around my house that this was a worthwhile investment:  https://www.homedepot.com/p/Milwaukee-1-000-lbs-Capacity-Dual-Handle-Hand-Truck-60138/202204469

I wrapped some thick foam around the front of the posts to avoid scratching speakers.

@big_greg

Agreed. It's very obvious, and I said it earlier in the thread.

Forget sliders if you are moving speakers around the house....Get a 2 wheel dolly on Amazon. Much easier. I never like "sliding 120 lbs. around the house."

Unscrew one of the spikes and take it to a big box hardware store. Go to the fastener section and gently try the spike's threads in the thread sizer until it goes in smoothly. Record the size and search for a caster with matching threads. Verify the load rating of the four casters to support the weight of your speaker.

No drilling. No foolish sliders. 

I fitted commercial casters to my 400 lb + per speakers to position them and after marking the floor with tape, I left the casters on in case I ever wanted to change position.  I never have and I doubt that being on casters rather than spikes affects the sound.