ASR has measurements for the Canton Plus GXL.3, which is the closest model I can find to compare to the Canton Plus GX speakers pictured above. Rather poor dispersion in the upper band, so may not be well suited for surrounds. The cabinets are plastic and are typical of what you would see in a bar or restaurant (these came out of a clothing retail shop). Might be ok for desktop use and for front heights, but not sure if I'll go through the trouble of changing surrounds. I do have wall mounting hardware for all 4 but I'm not expecting too much out of these.