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Increasing AVR or PrePro pre-out voltage to external amp

multichannel_guy

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Hi,
What are the adjustable features in AVRs and PrePros to increase line level pre-out voltage to an external amp?

Overall Input Trim

If speaker levels set after a calibration event areLeft = 0db, Right = 0db, Center =0db, SL = 2db, SR = 2.5db, would increasing all speaker levels by 3db contribute to increased pre out voltage?

What about any GEQ or PEQ levels?
 
How speaker levels and GEQ or PEQ levels affect output voltage can differ between models.

You can use a basic ~15 multimeter to measure your AVR's output voltage and find the answers yourself :)
 
How speaker levels and GEQ or PEQ levels affect output voltage can differ between models.

You can use a basic ~15 multimeter to measure your AVR's output voltage and find the answers yourself :)

I would think that a "percentage" of user adjustable pre-out voltage is allotted to the type of user adjustable parameters mentioned above. In your experience, is there an optimal level of such parameters that seems to work or sound best when trying out external amps from different manufacturers? Have you possibly experimented in that manner?
 
In your experience, is there an optimal level of such parameters that seems to work or sound best when trying out external amps from different manufacturers? Have you possibly experimented in that manner?
I have not experimented with AVRs personally.

A universally applicable answer WRT setting up trim levels and PEQ levels for best output voltage likely doesn't exist.

Hence, the multimeter.
 
Hi,
What are the adjustable features in AVRs and PrePros to increase line level pre-out voltage to an external amp?
The simple answer is, the volume control dial is what people normally use to increase the pre out voltage to an external amp, and obviously to the internal amps as well in non preamp mode.
Overall Input Trim

If speaker levels set after a calibration event areLeft = 0db, Right = 0db, Center =0db, SL = 2db, SR = 2.5db, would increasing all speaker levels by 3db contribute to increased pre out voltage?

What about any GEQ or PEQ levels?
Output trims are used to balance the output of the channels at any given volume control setting. Yes if you increase it, the output voltage will increase, but again, it should be used to for balancing the outputs of all channels, not as volume control.
 
The simple answer is, the volume control dial is what people normally use to increase the pre out voltage to an external amp, and obviously to the internal amps as well in non preamp mode.

Output trims are used to balance the output of the channels at any given volume control setting. Yes if you increase it, the output voltage will increase, but again, it should be used to for balancing the outputs of all channels, not as volume control.

Yes indeed. However if you don't need the full compensation available to balance the channels you could, after balancing, try applying whatever adjustment headroom is left to all channels for a little extra boost.

That said if you are having to do this something is likely mismatched or wrong in your setup. Are you sure the problem is gain available in the pre-amp and not that your input signal is too low? What is your signal source? And, as a sanity check, you are going RCA output from AVR to RCA input power amp rather than XLR?
 
Yes indeed. However if you don't need the full compensation available to balance the channels you could, after balancing, try applying whatever adjustment headroom is left to all channels for a little extra boost.
Not really, again, if you boost the trim levels equally to all channels by say 1 dB, it will the same as turning the volume up by 1 dB that will affects all channels equally.
That said if you are having to do this something is likely mismatched or wrong in your setup. Are you sure the problem is gain available in the pre-amp and not that your input signal is too low? What is your signal source? And, as a sanity check, you are going RCA output from AVR to RCA input power amp rather than XLR?
The OP asked a question that has been responded to. Your question is different, but you have to the OP if he even has a "problem", I didn't get the impression that he did as he just asked a simple question.
 
The simple answer is, the volume control dial is what people normally use to increase the pre out voltage to an external amp, and obviously to the internal amps as well in non preamp mode.

Output trims are used to balance the output of the channels at any given volume control setting. Yes if you increase it, the output voltage will increase, but again, it should be used to for balancing the outputs of all channels, not as volume control.
If I max out the input trim, for example, it sounds less anemic, sounds like the mid bass got some steroids and so on. Hence, i wonder if the percent allotment of pre-out voltage on the user adjustable features ends up being too low on AVRs and Pre-Pros when pairing with some external amps.

Of course, the master volume can be lowered or raised, while establishing a minimum threshold for pre-out voltage.
 
If I max out the input trim, for example, it sounds less anemic, sounds like the mid bass got some steroids and so on. Hence, i wonder if the percent allotment of pre-out voltage on the user adjustable features ends up being too low on AVRs and Pre-Pros when pairing with some external amps.

Of course, the master volume can be lowered or raised, while establishing a minimum threshold for pre-out voltage.
In extreme case you are right. For example, if you have to set your MV to near 0 to get the spl you want, then you probably should adjust the trim level up.

If you do fine with MV at around -20 to say -10, then I would say leave the trim levels at what auto setup/ Audyssesy set them to, because increasing them so you can lower your MV would make no difference.
 
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