Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Audio Joke !!!!!!!!
Audio Joke !!!!!!!!
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 9th January 2007, 10:01 AM   #1
east electronics is offline east electronics  Greece
diyAudio Member
east electronics's Avatar
Join Date: Jan 2006
Location: Athens GREECE
Default Audio Joke !!!!!!!!

all this time i am a member of this forum ( yet ammatuer and inexpirienced in design ) i noticed all this wonderfull people of the forum working with terms like THD , idle current, transistor foldback, W rms, voltage, swing , mosfets, BJTs and many many others ...... nice glossary for all the audio people ....

i wish to add a new term ..... its called OD/SC


This will give you the number of burned transistors that you need to make one schematic to work and this you have to calculate toghether with individual expirience and/or wrong or bad evaluated schematic !!!!!!

just now i ve been a victim of my own inexpirience and made nistakes on a very nice design that cost me many many nice mosfets..... but ...i am learning ......

Given the opertunity i would like to thank so much Dr Bora Jagodic
for sharing with me one very nice design ..... that produces amounts of power toghether with vey warm and clear sound .....

thank you bora so much !!!!!!
  Reply With Quote
Old 9th January 2007, 10:24 AM   #2
phase_accurate is offline phase_accurate
diyAudio Member
Join Date: May 2002
Location: Switzerland
Maybe the more general term "semiconductor devices per circuit" would even suit more users !!!


  Reply With Quote
Old 9th January 2007, 10:50 AM   #3
Nordic is offline Nordic  South Africa
diyAudio Member
Nordic's Avatar
Join Date: Sep 2005
No, the universal measure is mililitres of air drawn through teeth.

Which is normally related to the price of the mistake/ difficulty to replace/inconvenience of it being a weekend etc...
  Reply With Quote
Old 9th January 2007, 11:30 AM   #4
Pulse-R is offline Pulse-R  Australia
diyAudio Member
Join Date: Mar 2005
Location: Melbourne
I often find an inverse relationship of air to cost - as my mouth is drawn tighter under higher pressure.

of course, I have a break-over point - at which the smoke begins to emit from the ears, and loud noises (not unlike the sound of nouns, verbs and adjectives) are emitted - at this point the millilitres per cost is exponential over time.
Digital is only on or off
  Reply With Quote
Old 13th January 2007, 01:50 AM   #5
Geoff H is offline Geoff H  Australia
diyAudio Member
Join Date: Oct 2006
Ah yes. Nothing like charred fibreglass and flames to prove you've a mistake, or design error. Been there, done that.

One particular problem child was a 100/w amp I had redesigned the o/p stage with bipolars rather than fets. It sounded very clean, but had an instability problem, which would take out the emitter resistors in the driver stage, without warning, in one or the other channel. Fortunately, the rest was so robust, it wasn't destroying 8 x $28 transistors.

The most embarrassing moment this occurred was during a party, playing "smoke on the water". But twenty minutes later, we were back on the air again, to the amazement of a few.

  Reply With Quote
Old 13th January 2007, 02:04 AM   #6
v-bro is offline v-bro  Netherlands
diyAudio Member
v-bro's Avatar
Join Date: May 2006
People are always so afraid of smoke, try to see the positive side effect of the 'atmosphere' it creates!
Max. cone displacement can be several foot on any speaker!Too bad it can be done only once......
  Reply With Quote
Old 13th January 2007, 02:59 AM   #7
CBS240 is offline CBS240  United States
diyAudio Member
CBS240's Avatar
Join Date: Aug 2005
Location: K-town
the atmosphere around a smoked electrolytic is not so positive...if you ask me.
All the trouble I've ever been in started out as fun......
  Reply With Quote
Old 13th January 2007, 03:21 AM   #8
Geoff H is offline Geoff H  Australia
diyAudio Member
Join Date: Oct 2006
Agreed, but not as bad as enamel on freshly annealed copper.

V-bro may have different ideas, after all, he does have a unique method of measuring cone excursion in a non repetitive manner.
  Reply With Quote
Old 13th January 2007, 07:02 AM   #9
unclejed613 is offline unclejed613  United States
diyAudio Member
unclejed613's Avatar
Join Date: Dec 2006
one of the worst sounds you can hear is MMMMMMTP!!!!!!!!! (a short burst of 60hz followed by a loud click and pop) that's usually an expensive sound...... i once worked on a harmon kardon that would go "ticticticpffp" after it was repaired...... the oscope revealed the ticking as a 10khz oscillation in the amp that occurred in short repetitive bursts until the output transistors shorted.
Vintage Audio and Pro-Audio repair ampz(removethis)@sohonet.net
spammer trap: spammers must die
  Reply With Quote
Old 13th January 2007, 07:17 AM   #10
Geoff H is offline Geoff H  Australia
diyAudio Member
Join Date: Oct 2006
The better HKs have things that glow in the dark, intentionally.

Why is that the o/p transistors don't go s/c at the same time? Must be a competition. The survivor gets to have a go at the speaker.
  Reply With Quote


Audio Joke !!!!!!!!Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Joke! GK The Lounge 4 20th August 2007 02:42 PM
Joke of the day EC8010 Tubes / Valves 19 21st February 2007 07:21 PM
joke moray james The Lounge 1 23rd August 2006 05:57 AM
A joke? Zombie Tubes / Valves 8 28th April 2004 06:28 AM
A Joke, A Joke!!!!!!! SkinnyBoy The Lounge 2 1st May 2003 04:24 AM

New To Site? Need Help?

All times are GMT. The time now is 05:30 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio