stupid question on setting bias

  • Thread starter Thread starter doctorunderhill
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doctorunderhill

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i believe when setting/adjusting bias it is necessary to have a proper speaker load to protect the transformers- just like in any normal powered on operation.
 
Just because I feel like being “that guy”, if all the knobs are on zero and you aren’t putting a signal into the amp, it’ll probably be fine without a load.

I don’t really recommend it though lol
 
311boogieman said:
Good to know you have so much disposable income at your age.
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I haven’t bought an amp in ages, aside from a Kemper. I just have 5 or 6 chassis I take apart and build different amps into when I’m bored.

But in this theoretical pinch where you would have to bias an amp without a load to connect it to, I wouldn’t hesitate to just unplug the instrument cable and turn down the volume. No signal no spikes
 
I mean if you have a load in the room, plug it in for sure.
I’d never recommend anyone to drive without a seatbelt either, but we’ve probably all done it a few times
 
Dan Gleesak said:
I mean if you have a load in the room, plug it in for sure.
I’d never recommend anyone to drive without a seatbelt either, but we’ve probably all done it a few times
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I take my seatbelt off every time I get on the driveway to my cabin - about 3 miles. I just wouldn't tell anyone in a thread like this :D


Edit: I always wear my seatbelt otherwise. I was rear ended on an interstate during rush hour by a chick doing her makeup while driving. She actually hit the guy behind me who hit me forcing me under the pickup truck in front of me. I was fine (seatbelt) but my Camaro was totaled. To this day, I get jittery being on a local interstate especially during rush hour. Luckily I've worked from home for the past 17 years so....

My 'driveway' is actually a gravel road in the middle of no where. Top speed is maybe 20mph in spots. No other cars or people :dunno:



ooops. I just did.

Edited for clarity.

And Dr under the hill, we will bow out of your thread now.
 
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311boogieman said:
I take my seatbelt off every time I get on the driveway to my cabin - about 3 miles. I just wouldn't tell anyone in a thread like this :D

ooops. I just did.

Edited for clarity.

And Dr under the hill, we will bow out of your thread now.
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I wear a seatbelt always these days. Largely due to years of having cameras in my work truck. Statistically they save lives. That said I have been in 3 car wrecks in my life where if I had been wearing a seatbelt I would be dead.
 
Me too Floyd Eye. I would have died if I didn't wear my seatbelt when I was 16.

Also, since this thread was about biasing, I biased my Friedman by myself this year. It was very easy, but the hardest part was being nervous about not touching the wrong thing. I wore electric proof gloves just to be safe. I saved myself $100 just by being a little brave.
 
If you keep one hand in your back pocket and have good shoes on you should be fine using non metal tools...ie wood.

I respect glove use as long as they don't hamper your work, and even then, I'd have one hand in pocket.

See my edit above.
 
Good point. All of my plastic handled screwdrivers still have steel shaft. I need a wooden handled aluminum screwdriver :yes:

My fear usually dropping something in a live chassis or forgetting to turn off probe/meter before moving on. Or a cat jumping up there.
 
311boogieman said:
Good point. All of my plastic handled screwdrivers still have steel shaft. I need a wooden handled aluminum screwdriver :yes:

My fear usually dropping something in a live chassis or forgetting to turn off probe/meter before moving on. Or a cat jumping up there.
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You never told me you were an amp tech.

Hmmm.
 
311boogieman said:
Good point. All of my plastic handled screwdrivers still have steel shaft. I need a wooden handled aluminum screwdriver :yes:

My fear usually dropping something in a live chassis or forgetting to turn off probe/meter before moving on. Or a cat jumping up there.
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The closest I’ve come to catastrophe is forgetting that my little cap discharge tool is hooked up and I turn the amp back on. I’ve melted at least 3 of them doing that lol. It’s an unnerving sizzle and smell everytime.

I made my newest one obnoxious so I can’t miss it

IMG_4907.jpeg
 
^ that's a great idea

I have a 4 socket all in one probe now, but I used to a single hooked up to a meter. I repeatedly wanted to just pull the probe out, with a live amp, to switch to the next socket :doh:

Luckily I didn't. You have to set aside time, take your time, breath deep, be methodical, and stay away from alcohol :yes:

Floyd Eye said:
You never told me you were an amp tech.

Hmmm.
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no no no - biasing and general poking is about it, anything else goes to Steve at Gravity Strings in Soulard,
 
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