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Purpose of volume control on Precision bass?

I play in one band that has a sound guy. I give him full blast all the time, but I still turn it off between sets. I don't really have to, but I think it's a good habit as long as you remember to turn it back on. I have had a couple of ghost notes to start the third set. :)

I also play in much less structured acoustic-based group. For that, I have played through a 70 watt GK Backline 110 when we are just in the standard "coffee shop" setting or I DI when I'm using a small PA. Since everyone else is playing acoustic instruments through DIs or even just as acoustic instruments, I find the volume control to be very valuable because the bass can easily get too loud punchy during softer songs. I start at 75% and usually cut back more often than I turn up. As someone else said, at 75% you roll some of highs off and it seems to fit with the acoustic instruments better.

I used to have a Ergo EUB that didn't have a volume knob and it drove me nuts, so maybe I'm just a control freak. Ha-ha.
 
If I'm comfortable with my levels in a given room, I set it 100%. Sometimes I'll start off with it backed off a hair, then pull it up when the guitars inevitably get louder. For the most part though, I leave it all the way up. I don't really enjoy the tone I get when I adjust the volume at the amp instead. It's always sounded a little anemic to me. Id rather have to turn down and have the volume on tap then have to boost my levels at the amp if I'm not loud enough.
 
It would be neat if you could get a volume knob with maybe 3-5 detents at evenly spaced intervals. It would give you some reference for volume presets in various conditions. I believe Mouser sells some that have like 11-30 detents but I'm not sure if some have less than that. Now if it was also a push-pull you could make it a kill switch and get the best of both worlds.
 
Around 75% knocks a tiny bit of the highs off, better than the tone control can do.

After reading all the replies until yours, I was surprised to have to wait so long for the "correct" answer.

To be clear, I'm talking about a traditional Fender Precision Bass. P basses with onboard preamps, newer pickup designs... these may behave otherwise.

For many years I have had the habit of rolling back the volume knob of a Precision Bass just a tiny bit; maybe an 1/8" or 3/16" back. The sound of a proper Precision pickup at full volume is distinctive in its increased midrange and treble output. Rolling back the bass's volume control attenuates that part of the spectrum enough to matter.

Once, hanging out in the old Nordstrand shop, I was playing my vintage Precision after Carey and Maurilio restored it. Carey noticed my setting its volume this way and asked about it. When I said why I did it, he said that he had another middle aged customer who did the same (I was pushing 50 at the time).

The player's age may inform the likelihood of their intentionally using this technique. I believe that in the current era of "cutting through the mix", bass pedalboards, and multiple preamps, some such nuances of traditional equipment are vanishing from knowledge.
 
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On a P Bass, all the way up. On two-pickup basses, I'll blend to taste.

On a single pickup bass like a Precision, I have always been concerned that if I backed off the volume on the bass I wouldn't be sending the best, fullest signal the pickup has to offer to the amp. I wonder if there is any truth to that.
 
After reading all the replies until yours, I was surprised to have to wait so long for the "correct" answer.

To be clear, I'm talking about a traditional Fender Precision Bass. P basses with onboard preamps, newer pickup designs... these may behave otherwise.

For many years I have had the habit of rolling back the volume knob of a Precision Bass just a tiny bit; maybe an 1/8" or 3/16" back. The sound of a proper Precision pickup at full volume is distinctive in its increased midrange and treble output. Rolling back the bass's volume control attenuates that part of the spectrum enough to matter.

Once, hanging out in the old Nordstrand shop, I was playing my vintage Precision after Carey and Maurilio restored it. Carey noticed my setting it's volume this way and asked about it. When I said why I did it, he said that he had another middle aged customer who did the same (I was pushing 50 at the time).

The player's age may inform the likelihood of their intentionally using this technique. I believe that in the current era of "cutting through the mix", bass pedalboards, and multiple preamps, some such nuances of traditional equipment are vanishing from knowledge.
I agree-

I believe the tone is in that last percentage of gain (at least in a passive bass). it also gives you the strongest signal to the board which again is important to a passive bass.
 
I always like a little gas in the tank so roll it to about 75% or so.

I have always played this way as well. That way, I have some room to increase the volume if I need to. A couple of years ago I read an article where Carol Kaye and several other session players also recommended keeping the volume at about 75%.
 
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