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Audio specifications come with conditions

DonH56

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#3
Yes, I have always liked Rane (used some of their gear back in my pro audio days).

I have never been a big fan of the SMPTE IMD method. It is very audio-specific and good for what it is, and much better than no IMD testing, but sweeping a pair of more closely spaced tones or doing a multitone test spanning the full range is much more demanding (and revealing) IME/IMO. That said, the SMPTE method is very much a "real-world" sort of test so I can't dislike it too much.
 

Blumlein 88

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#6
I like the twin tone sweeps. Here is an example of 1 khz separation with a -1dbfs input level for 3 DACs. Background goes to light gray at -120 dbFS. Easy to see which DAC is cleaner. You can see IMD, THD, imaging, or other spurious tones.
twin tone sweeps 3 dacs.png
 

DonH56

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#7
That's hilarious, love to see companies with a sense of humor. Reminds me of the numerous old National circuits (e.g. the write-only memory,WOM, or the infamous incredibly complex op-amp in one of their databooks that careful tracing would show had one wire going from input to output, a straight wire without gain), or the Watkins-Johnson RF mixer plotting performance vs. phase of the moon.
 

restorer-john

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#8
Spelling is not their strong suit. Ecstasy not ecstacy.

Reminds me of the Abbey Road vinyl plugin:

abbey road plugin.JPG


I do like this part:

"If a unit's frequency response rises at any point, especially the endpoints, it indicates a fundamental instability problem and you should run from the store."
 

Don Hills

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#9
That's hilarious, love to see companies with a sense of humor. ...
Mackie Corp have / had references sprinkled throughout their literature to the Corporate Chihuahua. For example, in the specifications you might find a line such as "Weight of Corporate Chihuahua: 3.5 lb." (The chihuahua was real and sadly passed away a while ago, duly announced by press release.)

If you want to go down the rabbit hole on nonsensical audio equipment, Google "Funk Logic".
 

Krunok

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#10
I am genuinely impressed with the Applications list! :D

Applications
  • New Age Seminars
  • Car Washes
  • High School Cafeterias
  • Funeral Homes
  • Executive Washrooms
  • High End Audio Demo Rooms
  • Community Access Cable Channels
  • Airport Baggage Claim Areas
  • Cars With Tiny Steering Wheels
  • Communications Scrambling
  • Railroad Crossing Warning Systems
  • Door Stops
 
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DonH56

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#12
Mackie Corp have / had references sprinkled throughout their literature to the Corporate Chihuahua. For example, in the specifications you might find a line such as "Weight of Corporate Chihuahua: 3.5 lb." (The chihuahua was real and sadly passed away a while ago, duly announced by press release.)

If you want to go down the rabbit hole on nonsensical audio equipment, Google "Funk Logic".
Forgot about Mackie despite installing a number of their components over the years (been a while).

Have to check out Funk Logic...
 
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