"Quelle" is a French word that translates to "which" or "what" in English. It is often used to introduce a question or to inquire about a specific thing or idea.
The definition of sensible refers to having good judgment or being practical and reasonable in one's actions and decisions. It can also describe being aware of one's surroundings or having the ability to perceive things accurately.
YES! They work wonders! They are amazing high deftion speakers just for a low price