"Arny Krueger"
Phil Allison


** Try answering the right person's post - Arny.

Sayer snipped the original context out of sight and now YOU are asking him
about MY post.

Then you sneakily introduce a NEW context of your own making.

What a posturing ASS you are.



The 303 delivered 45 watts per channel into 8 ohms loads.

Performance into 4 ohm loads?


** Not relevant - ask the same Q about the A21.

( The 303 spec was for 42 watts at 6 ohms. )



It was short circuit safe.

There are no classic SOA or current limiters. How was the output stage
protected?


** The output triples inherently limit at 4.5 amps.


It used all silicon transistors and exhibited no sign of crossover
distortion.

Par for the course.


** Absolutely not the case for domestic SS amps in 1967.

The 303 was non bias critical & output device temp did not affect the
setting.

Go look at the original context for MY post.

Stop being such a PITA smartarse Septic ASSHOLE !!!.



THD measured at the 1 watt level was circa 0.003% and less than 0.03 % at
rated power - ten times less at both levels than Sugden's woeful A21.

OK, that's at 1 KHz. How about 20 KHz?


** The 303 spec was for 0.1 % at any level up to 45 watts at 10kHz.



Compared to the Quad 303, Sugden's A21 was a pile of junk.

The interest in the Sugden amps mystifies me because they seem to be so
backward.


** A quirky, pommy amp only a quirky pommy could love.



Here is a schematic of the 1970 version.

http://www.geocities.com/quad_esl63/...c/power303.jpg


It looks to me like there is no loop feedback from the output back to any
place near the input. Am I missing something?


** You sure have missed it:

R113 (82k) and R 111 (2.2k) divide the output by 38.3 times, then R108 & R
101 ( both 22k) cause the whole amp to act as a unity gain inverter to that
divided down level.

So overall gain is - 38.3 and the input sensitivity = 500mV.


Hey Arny - still not corrected all those STUPID errors on your page about
the Crown amp ?

****ing compewter geek ******.




........ Phil