Is your amp complete? or finished?

azrockitman · 2341

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Offline azrockitman

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on: September 06, 2013, 06:12:58 AM
I borrowed this from a non related forum this morning.
No dictionary has ever been able to adequately define the difference between "complete" and "finished". However, in a linguistic conference held in London, England, and attended by some of the best linguists in the world, Samsundar Belgian, a Guanese, had an outstanding definition.
His challenge was this: "Some say there is no difference between 'complete' and 'finished'. Please explain the difference in a way that is easy to understand."

His response was:
"When you marry the right woman, you are 'complete'.
If you marry the wrong woman, you are 'finished'.
And, when the right one catches you with the wrong one, you are 'completely finished'.
He got a standing ovation.

Esoteric DV-50, Technics SL1200-M3D, B&K Phono 10 Preamp, Sumiko Blue Point Special Evo III, Bottlehead Stereomour, Orca's


Offline Mike B

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Reply #1 on: September 06, 2013, 06:37:33 AM
Both are complete.  Work perfectly and sound wonderful.

Also finished.  I'm not going to dick around with modifying them further.

I like to put the mod parts in with the build.  Easier that way.

I'm going to wait until it breaks before I fix it - :)

Far away from the bleeding edge


Offline Grainger49

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Reply #2 on: September 06, 2013, 08:33:22 AM
My amps are complete, yes, finished probably never.

Does this make sense? 

My Eros is even further away from being finished.



Offline matthewmckay

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Reply #3 on: September 06, 2013, 08:55:06 AM
I made the mistake of wrench-tightening some binding posts on a speaker, while I was listening to music...

needless to say, that particular amp is finished.



Offline Paul Birkeland

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Reply #4 on: September 06, 2013, 07:32:57 PM
I made the mistake of wrench-tightening some binding posts on a speaker, while I was listening to music...

needless to say, that particular amp is finished.

Just thought I'd shamlessly plug our products - the amps will tolerate a dead short on the speaker outputs with no ill side effects.

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Chris

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Reply #5 on: September 06, 2013, 09:53:46 PM
Mr. Mogo risin makes complete sense and AZ's definition is hilariously perfect... I think no world class linguist is needed as you guys got the defs down pat.... Now, I completed my post and am satisfied, therefore, i am finished "washed my hands" of it.....



Offline mpeg2

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Reply #6 on: September 07, 2013, 02:25:29 AM
PB: Isn't tolerating a dead short on the output a characteristic of most/many tube amps. What they may not tolerate is a "dead" open. Solid state amps are usually the reverse (a dead short lets out all the magic smoke).

When I built my 1st tube guitar amp & saw a shorting output jack (if no speaker plugged in, the output was shorted), it took a long time before (and a long discussion with the designer) before I came to realize this.

   Rich



Offline Grainger49

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Reply #7 on: September 07, 2013, 02:50:43 AM
Just thought I'd shamelessly plug our products - the amps will tolerate a dead short on the speaker outputs with no ill side effects.

-PB

They are also pretty happy with the primary of the output transformer shorted during startup.  Sometimes I forget to throw the switches back to "open" and play music through the Parafeed cap to ground.  Then I remember since there is no music coming out.

This keeps the transformer primary from getting magnetized by the startup bleed through DC.  Xavier did it, so I followed suit.



Offline Paul Birkeland

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Reply #8 on: September 07, 2013, 01:41:44 PM
If you have a power amp with global feedback, then you would rely on signal being present at the secondary of the output transformer in order to tame what would otherwise be a ton of gain and qutie a bit of distortion.

If you drove the input of such an amplifier with a healthy amount of signal, but had a short at the secondary of the output transformer, the output valves would be working incredibly hard, possibly to the point of overheating either themselves or the output transformer. 

Generally, this is a pretty difficult condition to create, but it's certainly possible.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man