How does it vary?
Just finished writing this and came back to say possibly TLDR, but theres a bit to unpack which probably has a simple answer.
Couple of things recently made me wonder about this.
Up until just before christmas, I ran my amp into a reactive load at 16 ohms, 100w MV at about 6.
Then I switched it to 8 ohms. Shortly after, the load started going into its thermal overload state where its overheats, bumps over to a safety load and the sound cuts out.
You stop playing at this point and turn the volume on the guitar down.
It comes out of the protection mode after 30 seconds or so once the fan has done its job.
I got in touch with tech support, thinking there was an issue, and after a bunch of back and forth I mentioned the change from 16 to 8 ohms and the support guy said that was most likely the issue as the amp outputs less power at 16 ohm than 8
Sure enough, I changed it back to 16 ohms and no further issues.
I did some digging and found this.
Now, I remember Two Notes stating somewhere in the literature that even at max output from Reload, it has around -3db attenuation, which as it happens is about the db difference between a 100w amp and a 50w amp given point on the volume control I guess assuming same amp model and exactly the same pots.
I've got the amp and Reload set for 16 ohm, the cab is 8 ohm, so the cab, according to the table in the link, is seeing 50w or a volume drop of -3db. But when the load is set for 16 ohm into a 16 ohm cab the power is 25w and a drop of -6db.
Given tech support said that the amp is out putting less at 16 ohms than 8 ohms, does it follow this relationship from the table? Admittedly I'm unsure what the relationship is.
Basically will an amp set for 16 ohm, into a 16 ohm cab be 3db quieter than an amp set for 8 ohm into an 8 ohm cab. And does this mean that the 16ohm cab is seeing half the power of an 8ohm cab?
Comments
If one or more of those things aren’t true - which it sounds like they aren’t - then all bets are off.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
View my feedback at www.thefretboard.co.uk/discussion/comment/1201922
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
According to the schematic the NFB (on the original version with only a presence control) should be connected to the 4-ohm tap - although in fact that wouldn't solve your problem since that would give even less. There's no reason you couldn't connect the depth control to the 16-ohm tap if you wanted though.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein