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bbkcs
 
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Default Over-volting the preamps

Hey everyone.I was just wondering what are the possible negative points of running a HU with 6 volt preamp outputs to an amplifier
that states the maximum preamp input voltage is 4 volts? I'm only asking because I bought an amplifier, and because of it's 4 volt
limit, it eliminates all of the headunits I was looking at buying, because most of them include 5 to 6.5 volt preamp outputs.

Thanks for any input,
Daniel Roberts.


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Bryan Jackson
 
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Get an RCA Attenuator


http://www.cardomain.com/item/PERATTN?ref=frog





"bbkcs" wrote in message news:9gD%c.2170$LT5.245@attbi_s52...
Hey everyone.I was just wondering what are the possible negative points of running a HU with 6 volt preamp outputs to an amplifier
that states the maximum preamp input voltage is 4 volts? I'm only asking because I bought an amplifier, and because of it's 4 volt
limit, it eliminates all of the headunits I was looking at buying, because most of them include 5 to 6.5 volt preamp outputs.

Thanks for any input,
Daniel Roberts.


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Kevin McMurtrie
 
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In article 9gD%c.2170$LT5.245@attbi_s52,
"bbkcs" wrote:

Hey everyone.I was just wondering what are the possible negative points of
running a HU with 6 volt preamp outputs to an amplifier
that states the maximum preamp input voltage is 4 volts? I'm only asking
because I bought an amplifier, and because of it's 4 volt
limit, it eliminates all of the headunits I was looking at buying, because
most of them include 5 to 6.5 volt preamp outputs.

Thanks for any input,
Daniel Roberts.


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.744 / Virus Database: 496 - Release Date: 8/24/2004


It's no big deal. The loudness compensation on the HU might be in the
wrong place if you can't turn down the amp's gain far enough. That
would cause too much bass at higher volumes but not enough at lower
volumes. An in-line attenuator can fix it.
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Mister_B
 
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An inline attentuator is not needed as the pre-out voltage MAX is 6v .
That would mean turning your head unit up past clipping point . Also ,
most music is dyanmic , so 6v would not be seen playing music but
rarely even if the head unit did not clip the signal at all with volume
at amx . No head units have a pre-out signal that will not once volume
is pushed to max .. Adjust the gains to the 4v point on the amp , watch
the volume on your head unit and leave EQ such as bass boost and
loudness and bass/treble to ZERO or attentuate those 2 or 3db if the
music is bright in those frequency ranges . If you are using sub
pre-out - set the sub volume to its maximum level on the head unit
before setting gains . You will be fine and it should sound great ..
Do not buy an attentuator ..


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