Downunderwonder

Douglas Adams more like.

I am not sure what you mean. I thought I had described it well enough already but another go... Relying on memory, the samples were set up as level and eq matched as could be. Aim was to test detection of signature SS modeling against real thing. Sets of rerecorded tracks. Each set had iirc three levels of drive dialled in so 'clean' SS vs 'clean' tubes, 'mild O/D' v mild tubes, fuller O/D SS v fuller O/D tubes. Listen as many times as you like before plumping for which set belonged to SS and which was the tubes. I was surprised by the low result. 75% 'correct'. I thought they were very close but no cigar and figured most would pick it same. Even more surprised was I by the enthusiastic interpretation of the tester that it meant 75% could tell real tubes from modeling effects.

The test was set to challenge bass players to pick which was tubes and which was solid state emulating tubes. I think it's pretty straightforward! It wasn't asking which was preferred, only which was which. The hypothesis being tested was ''tube emulation is close but no cigar, bass players know this and can tell the difference''. Further, ''here is our chance to prove it''. Since it was such a simple test the binary choice enforces an allowance for a coin toss answer affecting the results so strongly. On further reflection, the responses that were wrong had to be from folks that ''had an inkling'' but were wrong. I don't think anyone would have given an actual coin toss answer but even if they did they are also ''don't really knows'' split 50/50. So mathematically we know the ''can't tell'' group comes to 50% of the total being 2x 25% who answered wrong. The key to it is I think it is just as likely to be picking correctly as incorrectly if you don't have the capability to properly discern A from B. One of these days I might have a crack myself. I would make it a lot harder by including an unknown number of tube devices to pick out of the samples. If I do I will need a real statistician to interpret the results back to the likelihood any one basschatter can correctly identify a recording is from a solid state or tube amp.

I never get where people are coming from when they say they need more for 'bigger gigs'. If you are covering the bar room 200 size without PA and drummer is giving it what for then you are all set for the big stage as well. If anything you will have to turn down while the PA picks up the weight.

You two might have more luck finishing the year as winners here. Sell two but buy one is all good.

I am neither an electrician or an electronics guy. Afaik electricity is electronics with a single ground and a whole lot of power flying around.

That plucking hand wrist position would give me hell. Holding it more fore aft instead of sideways works for me.

Anyone else scared pantsless by the chances of blowing out hearing with one mistake via in ear speakers?

Describes my maths. I am confident the number with the skills was 50%. Remaining 50% guessed 25 each way.

I forget the exact number but I am confident it was a significant number of volunteers into triple digits. As I recall there were two or three levels of overdrive dialed in as close as possible to equal and recording levels were also equalised. It was very well done. Participants were asked to listen to each set as many times as they liked before deciding which set was device A and which B. 75% decided correctly. Nobody has corrected the idea that the simple calculation is the truth, so long as the sample size is significant, so I am good with that. Result, statistically only 50% of bass players could properly tell a recording of a VT bass pedal from an all tube DI. You can imagine the consternation when 75% got it 'correct'!!!!

The trial has already been done as described! 75% got it correct. All that remains is the interpretation of the very simple data.

It simply wouldn't rate investigation unless that was the point of a different investigation to the one I posted. Do feel free to expand on your almost famous accounts of trialing the new kid on the block GenzBenz ClassD power stage against its predecessor. I only remember the result was not popular among the class A/B rocks best club when they couldn't pick which was which.

Not how I posed the trial.

That's what I figured but still have no maths to back it up. With a result of 90% things get squiffy. 20% and 80%, but surely 90% would claim they heard it right! How does the statistician prove the existence of the other 10% that are just as tone deaf as the other 10%? Nobody even knows if they are in the 10% or the 80%.

The actual skill level is 1 or zero for individual test subjects. The returned test data does not differentiate between correct guess choices and skilled choices. It's a one shot trial. There is a hard and fast accurate assumption that at an actual skill number of zero the test would return a 50% correct selection rate. Instead there is a 75% success rate. If the success rate came in close to 100% you could say the ones who got it wrong have bad hearing and be confident there were clearly audible differences. 75% is no man's land where it would be nice to have some actual robust maths to describe the percentage with the skill to hear the difference.

Ok, +1 for your enthusiasm.

You can stick on a foam carved faux neck heel onto anything. That's the least of the concerns.

As the owner of far more gear than I really need here are my rules: Everyone starts with a score of zero. For every amp or bass you divest you score +1. But any purchase gets you -2. The goal is to finish 2022 at +1 or better. A score of 0 is an honorable mention. -1 and you weren't trying hard enough and are barred from 2023 entry. This thread is for the trying to divest. So far it's still 2021 so I am good by default as is everyone else who wants in. Not to detract from the non accumulation thread! This commemorates my 1st year at BC where my sense of humour is appreciated as delivered. And btw, downunder it's under 3 hours to HAPPY NEW YEAR!!!

Depends on the need and quality. If replacing a shagged worn out one for like then I would keep it quiet. Same as for a cable or set of strings or a dead pedal or amp that wasn't worth repairing. Personally I wouldn't mind a pass for a Flash Harry pack bag if it fills a proper need like enabling a single trip load in that couldn't be done bass in case. To me the focus of the thread is slowing down the collection of amps and basses that really only see a stage to justify their existence. Two of each should really suffice, for the purposes of stage backup, but I can't claim to be in that distinguished club, not by a long shot. Don't ask. There should be another thread. I will start it...

Bill Fitzmaurice can hook you up with plans for DIY cabs and whole forum on line arraying. The tricky bit is line arraying at height in space, you need certified hangers or scaffolding.

GenzBenz did proper double blind playing trials with a class D power stage against their previous A/B? heavy as a couple of ducks power stage with the same power output and same new preamp. Result, statistically proven, nobody had a friggen clue which was which.

Simpleton maths says if 50% can get the correct result without listening then a 75% success rate indicates 25% have the skill to discern since the other 50% were the product of a guess. Then it gets too complicated for me. 25% got it wrong. They emphatically could not discern A from B. It doesn't logically follow that the other 75% could due to correct guesses providing a large chunk of the results but I don't have any maths for it.

I wonder if your mate Wal opened the door.

A straightforward which is A and which is B when both are thought to be known to the observer but in the blind.

In blind audio A/B comparison testing results can be compared with random odds. A and B are similar but different. Subjects get to switch between A and B as many times as they like to determine which is which based on life skills experience of A and B. A selection of unskilled public will be assumed zero skill in determining the selection and expected result would be 50% get it correct by random. We assume all participants are at least partially skilled. What is the actual skill level if 75% get it correct when no skill is required for a 50% result?