Shure TTR-121 test record

Date Updated: January 9, 2019 FAQ #5496
Question:
What was the TTR-121? Is it still available?
Answer:

Created in 1988, the TTR-121 was designed to test trackability, i.e., the ability for the stylus to maintain contact with the record groove.

The record label had a strobe pattern for setting turntable speed. Both sides of the 33 1/3 rpm LP record were the same. It was not a consumer test record.

Band 1 – intermodulated signal of 400 Hz and 4 kHz at 24 cm/second PRV.
Band 2, 3, 4 – intermodulated signal of 400 Hz and 4 kHz at 19 cm/second PRV.
Band 5 – intermodulated signal of 400 Hz and 4 kHz at 15 cm/second PRV.
Band 6 – intermodulated signal of 400 Hz and 4 kHz at 12 cm/second PRV.
Band 7 – left channel only, 1 kHz at 5 cm/second PRV.
Band 8 – right channel only, 1 kHz at 5 cm/second PRV.

All band specifications above are peak recorded velocities (PRV).

Sorry, the TTR-121 is no longer available.