Palmer Orbit 11 - world's first in-depth measurement (& real-world) review

Описание: Measurement equipment, methodics, environment:

Software: ARTA, STEPS
Sound Interface: Creative X-Fi USB HD
Pre-Amp: IMG MPA-102
Microphone: Isemcon EMX-7150 (Class 1 FR; calibrated; Max. SPL 135 dB @ 1% THD)
SPL Calibrator: Isemcon SC-1 (Class 2, temperature & supply-voltage compensated; Accuracy +/- 0,5 dB)

All on axis acoustic measurements were performed in ground plane (ref.: Groundplane Acoustic Measurement of Loudspeaker Systems - Gander, AES, 1980), in a true outdoor enviroment, with no relevant obstacles to the wavelengths in question, on a flat, hard surface on a wind free day.

All on axis acoustic measurements performed at 2 metres distance. GPM 2m equals 4pi 1m.

Off axis measurements performed on automatic turntable.

Calibration is tested / verified before & after the measurement series.

Measurements are repeated at least once, and the result only accepted as valid / reproducable if results from two or more measurements match perfectly (within tenths of a dB).

My measurement accuracies are proven via multiple extensive comparisons; e.g.:

https://mega.nz/file/mBwyCTxa#MZ17CDL...
https://www.diyaudio.com/community/th...