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RE: [motm] Mixers and CV

2001-05-07 by David Halliday

-> >You probably would not damage anything EXCEPT if you had
-> some speakers
-> >attached.  The 5-10 volts of the CV is many many times
-> larger than the
-> >>usual low-level audio signal
->
-> I'm not sure what you mean by low level. 10.96Vpk (or
-> 21.92Vp-p) is only
-> 20dBU.  The MIL of most Mackie line inputs is 24dBU, which
-> is over 34V
-> peak-peak -- less than the MOTM PS.  Just do not use the mic inputs.

Right - the mixer can be adjusted to accept the 20dBU input with zero
problem.

My concern was that since the person was asking a question like this in the
first place, I didn't want them to plug the CV into a mic level input.  It
probably would not hurt the mixer but it would sure increase the possibility
of frying a speaker.


->
-> The only danger is using signals that are beyond the audible
-> range.  The
-> mixer can pass subsonics that can damage your woofers.  If you use
-> nearfields I strongly suggest fusing the bass drivers, even
-> if you are not
-> using synthesizers.
->

Excellent point too - I was concerned about the high-frequency content of
the transient causing problems with the tweeters but an LFO running into a
decent powered amp could cause heating problems with the woofer - our ears
aren't that sensitive at those frequencies so the temptation would be to
crank it up...

Thanks for the comments!

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