Just curious...can pre amps Clip?
CH46E
Posts: 3,591
Comments
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That's a big 10-4.
Generally not a problem, but nowadays with the very high (compared to the antediluvian "line level" standard*) analog output voltages of digitial players of various kinds, it can be a problem -- particularly with old(er) preamps that were designed around expectaions of line level inputs with voltages around 1 AC V RMS to deal with.
N.B. I can only speak even halfway intelligently about "unbalanced" signals and standards; I am still fairly naive on balanced line level standards -- other than knowing that they're different
Plus, nowadays, many folks have so many points in their "supply chain" at which gain can be adjusted, sorting out issues with s/n and nonlinear distortions can turn into... well... a hobby
EDIT: But it did give us a cool new piece of audiophile jargon to utilize** -- "gain structure" 
I'll dodder back to my granny launcher chair now and drink some warm milk.
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* 0.775 AC V RMS into 600 ohms, if memory serves -- from the days that radio programming and remotes were sent on leased telephone lines!
** and, yes, I deliberately and ironically used "utilize" as my verb there. I am such a wag.
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. Nice chair!mhardy6647 wrote: »That's a big 10-4.
Generally not a problem, but nowadays with the very high (compared to the antediluvian "line level" standard*) analog output voltages of digitial players of various kinds, it can be a problem -- particularly with old(er) preamps that were designed around expectaions of line level inputs with voltages around 1 AC V RMS to deal with.
N.B. I can only speak even halfway intelligently about "unbalanced" signals and standards; I am still fairly naive on balanced line level standards -- other than knowing that they're different
Plus, nowadays, many folks have so many points in their "supply chain" at which gain can be adjusted, sorting out issues with s/n and nonlinear distortions can turn into... well... a hobby EDIT: But it did give us a cool new piece of audiophile jargon to utilize** -- "gain structure"
I'll dodder back to my granny launcher chair now and drink some warm milk.
________________
* 0.775 AC V RMS into 600 ohms, if memory serves -- from the days that radio programming and remotes were sent on leased telephone lines!
** and, yes, I deliberately and ironically used "utilize" as my verb there. I am such a wag.
Some final words,
"If you keep banging your head against the wall,
you're going to have headaches."
Warren -
Maybe that's why I can get much louder and cleaner with the new pre amp. Vs using my HTR as a pre. Its really quiet amazing. The RTA12b have so much more authority now.
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There just seems to be so much more control of the drivers at high volume. Especially the bass and mid bass. Tighter, cleaner and direct. Its incredible what a difference these upgrades have made.
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CH46E, if you don't mind my asking what pre amp are you using now and what did you have before? Wondering if this could have anything to do with my 12B's feeling weak.
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Went from a yamaha htr to a Anthem pre 2l tube pre amp.
If your 12b don't sound good here are a few things to check.
There is a left and right speaker. The serial number on the back should be prefaced with a L or R for their orientation.
Check and make sure someone did not cram the connection behind the crossover on the wrong way.
Open them up and make sure all the drivers are wired in phase.
Check and clean the fuse holder.
Check the cabinet for air leaks. Press on and hold the passive radiator and you will see the woofers push out. They should take several seconds to return to normal resting position. If they return in 3 seconds or less try sealing everything up.
They are great speakers and should sound awesome 👌.
