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Old 4th October 2012, 05:44 AM   #191
AJT is offline AJT  Philippines
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Quote:
Originally Posted by kimberlator View Post
May Be You're About Right, But I Think It Depends On What Quality Pot You're Using, In My Personal Experience There's Nothing Better Than The Use Of Fixed Resistors, But That's Limits The Adjust, Sometimes Necessary, DC Offset, This Is Why I Always Use ALPS Sealed Precision Multiturn Potentiometers, This Way I Can Assure That You Don't Have Any Issues With Pot For Long Time, Or Make Proper Calculations To Get The Right Values With Fixed Resistors.....Just My Point Of View, Best Wishes To Anyone
the cost of potentially losing all of the output trannies alone is reason enough to think of ways to get rid of the pot altogether, matching input LTP's is one of them.....
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Old 4th October 2012, 02:08 PM   #192
wg_ski is offline wg_ski  United States
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You won't "lose all of those output trannies" if you lose the offset null pot. But it will put DC - a lot of DC - to the speaker

The real reason to get rid of the pot is noise. Pots are noisier than any resistor and an input stage is the worst place to put noise.
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Old 4th October 2012, 03:24 PM   #193
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Well, I Don't Remember Any Issue About Open Pot Or Noisy Signal Due To A LTP Pot Anyway..At Least Not In My Amps Designed And Built By Myself, Not A Single Issue On That Particular Matter, For What I've Reading Here Now I Think Is Pure Good Luck....
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Old 4th October 2012, 07:45 PM   #194
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Okay can't we do this,
First make and Test Amp with pot ,set it after half an hour of full load testing, check again then measure and change the values with fixed resistances.i always try to match hfe of transistors.
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Old 10th October 2012, 09:29 AM   #195
AndrewT is offline AndrewT  Scotland
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3kW into 2r0 requires an output of 109.5Vpk.
Do you really think you amplifier can manage to get that output voltage level when delivering 54.77Apk?

You are in dreamland.
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Old 14th October 2012, 04:36 AM   #196
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Is it only the voltage which determines the output, is there no part of current in wattage,If it is so than v x I=w is not correct, what I read up til now is wrong?
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Old 14th October 2012, 04:38 AM   #197
AJT is offline AJT  Philippines
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Ohm's law required only 2 viarables to get the 3rd, P = E^2/R this is the power equation....in current terms, P = I^2 x R
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Old 14th October 2012, 05:26 AM   #198
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Quote:
Originally Posted by AndrewT View Post
3kW into 2r0 requires an output of 109.5Vpk.
Do you really think you amplifier can manage to get that output voltage level when delivering 54.77Apk?

You are in dreamland.



Fantasy world is so lovely
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Old 14th October 2012, 07:46 AM   #199
AJT is offline AJT  Philippines
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dream on guys...it's free and build those high power amps....
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Old 30th December 2012, 03:54 PM   #200
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Default my new torrid verses earlier one

Now my old torrid has become smaller,I got a big brother for it,That was 40 amps 230 volt and this one 60 amps 230 volt, only 35 k.g. weight, Secondary to be wound on both
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