GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Analog Playback
In the Thread: Bass impact on Turntable: how to estimate objectively

Post Subject: Another possibility?Posted by rowuk on: 10/4/2014

I recorded the LPs (Bruckner7-TeDeum Concertgebouw/Haitink, Also Sprach Zarathustra Chicago/Reiner - 1954) to digital. Then I lowered the stylus on to the record, but did not have the turntable turning. I played the digital copy at a bit more than my usual volume. The output from the stylus is the resonance picked up at the TT. I repeated this for various positions on the record. The highest resonance was at about 30% from the outside edge of the record.
Moving the TT on the rack changed nothing. Moving the speakers a couple of inches helped quite a bit. What I measured/changed did not have a BIG effect on the sound on most of the program that I listened to. I suspect that the "improvement" at the turntable moved the standing waves in the room and masked the effect at my listening seat.

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