It will be much easier if you show both plots with the same scale and range. Why not loading both measurements into REW and showing them in the 'All SPL' plot together?Monitors: Quested V2108 (no sub).
Tools: REW + Rode NT55.
Listening position and monitors position: as the picture two posts above.
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This was the old measurement with the KH310.
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Could someone help me and guide me a little in interpreting these measurements?