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Chip Amps Amplifiers based on integrated circuits

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Old 8th July 2003, 09:28 PM   #11
ronc is offline ronc  United States
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HAY WAIT i designed that circuit!!!!!
hahahahahahaha
Years ago i had to review for purchase some ultrasonic scopes for testing ferrous castings for flaws.
Everyone looked the same, had basically the same controls, same boxy shape and all operated with the same basic principals.One made by Automation Industries (Sperry) even had a kinda racing stripe down the top LOL.Well i asked the sales rep why, his response was "we wanted it to look different".I ended up going with Kruatkramer (sp) as the controls made it clear what the function of each knob was. Sometimes its the small things that make a difference.
ron
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Old 8th July 2003, 09:34 PM   #12
bqc is offline bqc  United States
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Peter, you mentioned that your AMP 1 power supply case is made of steel. I assume that you have determined
from listening sessions that the magnetic property of steel when placed
near a power transfomer does not adversely affect the sound?
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Old 8th July 2003, 09:37 PM   #13
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Actually I built one case from aluminum and one using steel, and steel sounded better (PS only)
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Old 8th July 2003, 09:45 PM   #14
cowanrg is offline cowanrg  United States
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i should have reworded "you took their schematic". i meant you took the one from national's datasheet and modified it (as well as thorstens). thats all ANY gainclone is, a modification of the base schematic.

as for the case, it just so happens that it looks very similar, and an external power supply is of course the best way to make an amplifier, so you both had the idea. with a design so simple, there is little to modify or change.

im not downing you at all, im just saying, its the fact of the matter. you took something with very little variables, and made it rightfully your own, yet becuase of the lack of variables, it comes out similar.
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Old 8th July 2003, 10:10 PM   #15
bqc is offline bqc  United States
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If Burger Kings can ride on Mc Donald's shirt tail and sell cheese burgers, then I guess there is nothing wrong with Peter making his AMP1 case similar to the GainCard case. It is Wendys that
tried to be different and serve cheese burgers with a square meat patty. The market place has tons
of products looking like the original with some
differences: from cars to jeans to shoes to soft
drinks. Ever wonder why all soda cans have same shape and volume? It is the free market entreprise and anything this not copy protected/patented
can be emulated.
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Old 8th July 2003, 10:42 PM   #16
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Quote:
Originally posted by ron clarke
Peter you had best expect this kind of flack.
Flack? No no, this is called "free publicity." What was it Oscar Wilde once said? The only thing worse than being talked about is not being talked about.

se
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Old 8th July 2003, 10:46 PM   #17
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For some reason, AA site is not working.
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“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
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Old 8th July 2003, 11:13 PM   #18
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Quote:
Originally posted by Peter Daniel
For some reason, AA site is not working.
Rod had to take it down for a bit and do some repair work on the database. It's back up now.

se
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Old 8th July 2003, 11:18 PM   #19
bqc is offline bqc  United States
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Peter, since you did not name your company 74Lab
or 48Lab or Lab47 and you did not name your amp
GainCube or AmpCard you have nothing to worry
about from 47Lab. There is however a "Amp One"
amp made by a home theater company called "AudioSource". You may get phone calls from their
lawyers. Toyota had to rename their latest truck
line from "T150" to "Tundra" after Ford's lawyers
came knocking
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Old 8th July 2003, 11:26 PM   #20
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In this case I'll name my product just Amp
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