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Old 8th February 2009, 12:17 AM   #161
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Quote:
on ebay
Typical ripoff.. no way that amp will do 600W with only
6 of those output devices..
OS
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Old 8th February 2009, 12:15 PM   #162
AndrewT is offline AndrewT  Scotland
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Quote:
Originally posted by ostripper

Typical ripoff.. no way that amp will do 600W with only
6 of those output devices..
OS
Hi,
three pair of those Sanken 200W devices will do 350W into 4ohm 60degree phase angle inside the 100ms SOAR.
and go to 600W into 2r0 inside the DC SOAR.

It will even do 960W into 1r0 but the problem will be keeping it cool at these very high currents. Low duty cycle testing with a cold heatsink.
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Old 8th February 2009, 12:25 PM   #163
Stee is offline Stee  Italy
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Default power is a second quality

first is the stabilization method
a dual load on ground
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Old 8th February 2009, 02:10 PM   #164
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Default Re: power is a second quality

Quote:
Originally posted by Stee
first is the stabilization method
a dual load on ground
stee...
your so called stabilization method is very well known as a sonic killer .....other amps use the same thing ( very old idea ) are very stable but sound very square....
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Old 9th February 2009, 06:16 PM   #165
Stee is offline Stee  Italy
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Default Good to know Sakis



Catalin
one idea

if driver and final on CFPhave the same devices
total gain is the same
for example if NPN have gain 50 (hFE) and PNP 100
complessive factor is same in the opposite rail
PNP 100 connect to NPN 50

this can raise job on feedback to compense this gap
and ensure stability with natural sound
(for less crossover distortion)

it's an idea not a thesys

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Old 10th February 2009, 07:58 AM   #166
catalin is offline catalin  Romania
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Default Re: Good to know Sakis

Quote:
Originally posted by Stee


Catalin
one idea

if driver and final on CFPhave the same devices
total gain is the same
for example if NPN have gain 50 (hFE) and PNP 100
complessive factor is same in the opposite rail
PNP 100 connect to NPN 50

this can raise job on feedback to compense this gap
and ensure stability with natural sound
(for less crossover distortion)

it's an idea not a thesys

Hello stee ,
I really share your ideea about mixing cfp+ef but just teoretical now.javascript:smilie('')

"if driver and final on CFPhave the same devices
total gain is the same" what do you want to say here ?
How the gain will be the same ?
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Old 10th February 2009, 08:45 AM   #167
Stee is offline Stee  Italy
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Default Copule's Solution

I want to say that changing the position of the factors
the result does not change
hence
the complessive gain between the upper rail
are equivalent to the lower rail
if you are using components of the same rank

even though they are different (PNP and NPN hFE)
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Old 10th February 2009, 05:50 PM   #168
Stee is offline Stee  Italy
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Default sorry wrong transistors reference

PNP driver have the same gain (hFE) of PNP final
and viceversa
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Old 17th February 2009, 01:15 PM   #169
catalin is offline catalin  Romania
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Default I'm bored

And because I'm boring .
They are some people that say without current mirror the sound is more natural .v4.4 . I will test .
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Old 17th February 2009, 01:17 PM   #170
catalin is offline catalin  Romania
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