2. amps-preamps
  3. 156758-132585

What am I missing? Pre/power gain and input sensitivity.

I’ve read a few posts about power amps with lower gain needing a pre with additional gain, but no one seems to mention input sensitivity in those conversations. If my source outputs 2V and my power amp input sensitivity is only 1.2V then whether the power amp gain is 16dB or 26dB my pre amp is attenuating the signal and the amount of gain on the pre doesn’t matter at all. With a given set of speakers, to get the same SPL with 2 different amps they should just need to output the same voltage, regardless of how they get there.

Am I missing something?

cat_doorman

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oldrooney
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Upnorthsound: Thanks for the link to Steve’s ramblings, I’ve spent a valuable hour perusing his musings. I especially liked his discourse on ‘the weakest link.’

dentdog: +1 on the value of some of the contributors to this space. I have been surprised at how much some of them are willing to give to the community.

 

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