to summarize the above, the output spec, in mV, is usually in reference to either 5cm/sec or 3.54cm/sec. The reference spec is often not listed so it can be important to research which one the company uses, as the actual output can vary by quite a bit, potentially making or breaking usability in a given system. To clarify Seasoned's last sentence, no cartridge has the same output forboth velocities.
Showing 2 responses by piedpiper
There is a 6dB difference with every doubling or halving of the cartridge voltage output. Thus an output of 1mV is 6dB louder than one of .5mV. The relationship of the output referenced to 3.54cm/sec and 5cm/sec is simple. If you divide 5 by 3.54 you get approximately 1.4, Conversely if you divide 3.54 by 5 you get approximately .7. If you have an output of [email protected]/sec and want to translate that to the slightly more common 5cm/sec reference you multiply .7 by 1.4 and get approximately 1mV@5cm/sec. The relationship of the Ruby to the MO is about 1.2dB. |