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Danny at GR getting bad Talk Back from many of his viewers
Jamo Concert 8 speaker...... Seems the comments have quite a few questioning how Danny Measures stuff and if this speaker/Tweeter is indeed maybe defective or out of the ordinary. He is getting measurements that do not match some magazine reviews measurements from the time, but is insisting...
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After reading this thread, I decided to measure the Concert 8 speaker. Please note that the measurements are done in room. The response below 500 Hz should be ignored.
This Concert 8 speaker was purchased new ~25 years ago. It has never been repaired or modified in any way.
Equipment used:
DAC/pre-amp: Denon AVR-X5200W (direct mode)
Amplifier: Rotel RB-1590
MiniDSP UMIK-2 calibrated microphone
Asus ROG Strix X570 Gaming motherboard (Toslink out).
REW V5.30.1
30cm on axis horizontal (measured between tweeter and midrange):
Psychoacoustic smoothing:
15 deg off axis (horizontal):
15 deg off axis (psychoacoustic smoothing):
30 deg off axis (horizontal):
30 deg off axis (psychoacoustic smoothing):
All measurements above were done between the tweeter and midrange. When moving up to the tweeter axis, the level is increased:
Tweeter axis (psychoacoustic smoothing):
To confirm that the measurements were correct, I measured one of my F208 speakers at tweeter axis (psychoacoustic smoothing):