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New mesa subway amps and cabs!

#603
dawind99 said:
I was not criticizing the construction technique or quality of build of Mesa cabinets and never said that something can't be done or done well (other than t-nuts in poplar ply:) . I use screws rather than clamps or presses while the glue cures. Yes, a proper glue joint is stronger than the wood. A large percentage of DIYers use Lowes and HD. I was pointing out the quality differences in sheet goods from different suppliers. Not the correct forum for this info I realize:) And, of course there are standards for sheet good dimensions, but not flatness though it can be deduced easily enough by the number/thicknesses of laminations and material. And, you mentioned resonance. We've both been around the block more than a few times and probably share a lot of experiences.. I apologize for any offense, none was meant. My first job out of college was as an R&D engineer at Microwave Associates in Burlington, MA during the Vietnam war. And then the war ended, the job was less interesting and the music returned. I taught fine woodworking in Boston until 2013. In between there were years of playing/touring, and engineering. I share your passion for sound and like reading your posts. Please don't take it personal if I disagree or question. I enjoy discourse and remain a sponge for knowledge. Again, apologies for any offense I suppose I'm better on the phone or in person. Peace
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Fair enough, thanks.

There is a flatness tolerance spec. which is important when fabricating with CNC tooling since the plunge depth is not a relative dimension from the top surface but an absolute dimension from the bottom surface (platen). If the thickness varies too much, the dado and rabbit depths will be wrong. You can imagine the difficulties this could cause.

Standard cabinet grade birch and especially plywoods tend to have a lot of thickness variability, it's not suitable for the tolerances we need for CNC. Everything is dado joined, including all the brace pockets and port boards which also act as bracing. Perhaps this picture might shed some additional light on what I was trying to convey (though this is just a "throw-away" prototype cabinet and not production material for the shell though you can see some production material bits elsewhere):

Subway_Ultra-Lite_Diagonal_2x10_Bass_Cabinet_Uncovered.jpg
 
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#606
agedhorse said:
Fair enough, thanks.

There is a flatness tolerance spec. which is important when fabricating with CNC tooling since the plunge depth is not a relative dimension from the top surface but an absolute dimension from the bottom surface (platen). If the thickness varies too much, the dado and rabbit depths will be wrong. You can imagine the difficulties this could cause.

Standard cabinet grade birch and especially plywoods tend to have a lot of thickness variability, it's not suitable for the tolerances we need for CNC. Everything is dado joined, including all the brace pockets and port boards which also act as bracing. Perhaps this picture might shed some additional light on what I was trying to convey (though this is just a "throw-away" prototype cabinet and not production material for the shell though you can see some production material bits elsewhere):

View attachment 3239180
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I totally agree. Anyone that has tried to mill so called "cabinet grade" birch vs Baltic would understand that. And, again thank you for understanding. I wasn't questioning Mesa quality which has been stellar since I played my first Mark 1. My statement about the "box" store plywood was to shed light on just that:) Thank you Andy.
 
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#608
Well, what has been said, has been said...there is no taking it back.

It would be great if members read their responses before hitting "Post Reply" and considered how their responses would be received by others. IMHO means "In My Humble Opinion" and that says that my opinion may be different from others. That means you are open to other opinions. Without that qualification, the poster is saying "That's what I believe and that's all that matters". That's when the problems start.

Of course, this is IMHO...let's get back to the topic at hand ;).
 
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#613
SoulReflection said:
Well, what has been said, has been said...there is no taking it back.

It would be great if members read their responses before hitting "Post Reply" and considered how their responses would be received by others. IMHO means "In My Humble Opinion" and that says that my opinion may be different from others. That means you are open to other opinions. Without that qualification, the poster is saying "That's what I believe and that's all that matters". That's when the problems start.

Of course, this is IMHO...let's get back to the topic at hand ;).
Click to expand...

Absent any reason for the contrary, can we not extend enough goodwill to each other so that we needn't type IMHO over and over to state and restate the obvious ... that people are posting based on their own beliefs and experiences?

The context and langauge should be enough to determine an asbsolute assertion vs. an opinion, and even then any reasonable person is open to learning something and having their mind changed if the facts predicate it. If they're not so reasonable, both sides typing IMHO over and over isn't going to change a thing.

It's bad enough how many threads get cluttered with deliberate total mischaracterizations of what someone has typed, or silly and often obviously fabricated claimed or humble-bragging exceptions that have nothing to do with the general truth of the statements or topic in question, that to further clutter with constant "IMHO" is very arguably purely pedantic not productive.

That's fact, not an opinion.

On topic, Boogie Boogie Boogie!
 
#614
StayLow said:
Absent any reason for the contrary, can we not extend enough goodwill to each other so that we needn't type IMHO over and over to state and restate the obvious ... that people are posting based on their own beliefs and experiences?

The context and langauge should be enough to determine an asbsolute assertion vs. an opinion, and even then any reasonable person is open to learning something and having their mind changed if the facts predicate it. If they're not so reasonable, both sides typing IMHO over and over isn't going to change a thing.

It's bad enough how many threads get cluttered with deliberate total mischaracterizations of what someone has typed, or silly and often obviously fabricated claimed or humble-bragging exceptions that have nothing to do with the general truth of the statements or topic in question, that to further clutter with constant "IMHO" is very arguably purely pedantic not productive.

That's fact, not an opinion.

On topic, Boogie Boogie Boogie!
Click to expand...
giphy.gif
...IMHO :)
 
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