Definitely away from any magnetic fields created by drivers or other EM fields possibly created by other common household devices. These considertationscan often be more significant than location relative to speakers alone, so do not focus in that exclusively. However, also in a location where sonic vibrations from speakers are minimal if possible. Where that is case by case can vary. Often it will be away from the rear wall used to re-inforce bass levels and also not directly in front of directional speaker designs.
I have similar omnidirectional speakers both in the same room as my gear and in a separate adjacent room connected via in-wall wires. I have a Niles speaker switch to select which speakers play. In my case, I cannot attribute any sonic difference based on location relative to source gear. Both rooms are in the basement and sit on the thinly carpeted concrete foundation, which provides a very vibration free environment for both overall. Isolation from EM fields and sonic vibrations together overall is the key. Speaker location relative to gear alone does not tell the whole story.
I have similar omnidirectional speakers both in the same room as my gear and in a separate adjacent room connected via in-wall wires. I have a Niles speaker switch to select which speakers play. In my case, I cannot attribute any sonic difference based on location relative to source gear. Both rooms are in the basement and sit on the thinly carpeted concrete foundation, which provides a very vibration free environment for both overall. Isolation from EM fields and sonic vibrations together overall is the key. Speaker location relative to gear alone does not tell the whole story.