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Old 9th January 2009, 11:25 AM   #121
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Yep kinda dangerous if a newby tried some of them at typical amp voltages . I did this when I was 10 or so, still have a little dent on my face just below my eye for my ill concieved experiments from a plastic bjt that went boom.

Im grateful for my eye.
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Old 9th January 2009, 02:48 PM   #122
Stee is offline Stee  Italy
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Default quote

Quote:
Originally posted by homemodder
Plenty current can be flowed, if I can give you one reference look at eletrocompaniet outputstages, theres something they do very well, loads and loads of powerful clean bass. I have 2 nemo s and 2 aw250 amps, for bass I havent heard any amp of any price be better at low frequencies.

I can supply a schem if you want to have a look.
Hi homemodder can you shere this schematic?

AndrewT

I apologize if you find irritating my architectures stop propose
no problem

yes the value of this load resistor is wrong, but this idea is beatiful
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Old 9th January 2009, 02:59 PM   #123
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Default Re: quote

Quote:
Originally posted by Stee
yes the value of this load resistor is wrong, but this idea is beatiful
who's idea is beautiful?
and why did you change it to something that probably can never be made to operate?
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Old 9th January 2009, 07:39 PM   #124
Stee is offline Stee  Italy
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Default Just an idea to found better solution

I would like use CFP configuration on my Amp
because his speed produce an intresting sound

so i have tested some solution
but CFP when works with power is very unstable
sometime generate RF

now I would like found a Simply solution
for example use this stage as driver
it's a beautiful idea
because his devices are little
so more similar, so more stable

but now generate a clipping:
probably because need an indipendent load (see figure)
( I am only a hypothesis )

or viceversa
need a common load between two rails... (next step of evaluation if that before fault)


again sorry for my english
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Old 9th January 2009, 09:00 PM   #125
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Stee if you want the schematic, email me, its too large for pacing here and if I shrink it, you wont see whats on it.
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Old 9th January 2009, 09:10 PM   #126
Stee is offline Stee  Italy
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Default Common load hypothesis

very approximate value
new architecture is subject to change

please edit if you like
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Old 9th January 2009, 11:20 PM   #127
Stee is offline Stee  Italy
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Default separate rail load

thanks Alex
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Old 10th January 2009, 08:08 AM   #128
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Default Re: separate rail load

Quote:
Originally posted by Stee
thanks Alex

stee ....it seems that you dont get it !!! do you ????

this is almost thread jacking ...and also forum people dont have the time for this ...... in only one thread you posted almost 15 schematics .....

this is a thread to disscuss

JOY 200 AMPLIFIER MADE BY CATALIN

so please give us a brake

regards sakis ( with sexy avatar )
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Old 13th January 2009, 10:37 AM   #129
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homemodder,
how have you improved CFP crossover artifacts?
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Old 13th January 2009, 11:22 AM   #130
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I use cfp only as driver in a EF, their is a way to reduce high frequency distortion and crossover artifacts of this arrangement but I cannot discuss it as I use this arrangement in a amp I sell to car audio and as a PA amp. I will only say it isnt sliding bias or error correction, its effects are mainly seen at high powers and at higher frequencies 1 KHZ and above. Its very simple, anyone can come up with this idea if he spends some time studying what happens in the circuit. A performance graph is on the fruga amp thread, I go for very low thd as my amps are for use at powers of 250 watt or more and need to have as little nasties as possible in high frequency domain.
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