Speakers play loud and clear in the higher frequency ranges. Rated from 187 HZ - 10,000 HZ. I am using these speakers for mid range and they are band passed from 250 HZ to 3,000 HZ. They tend to distort at lower frequencies with high volume but preform very well in the higher frequency range. A standard 6.5" mesh speaker grill can be mounted on top of the speaker but the speaker will not fit inside a standard grill if you are not using the NX grills. Great high frequency mid range speakers.
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