Creek CAS 4040 amp schematic

[tiefbassuebertr]

Originally Posted by stef1777

Hi Martin!

Thanks for this schematic but I did a mistake. I requested the s1 model but in fact, I have 2 models: s2 and s3 nor s1.

If you have these ones too, thanks in advance. Specially, the s1 model witch is the one in trouble. I have big "ploc" at startup and when powered off.

Stef...

A very fine sounded amp, if one have a correct dimensioned external (outdoor) power supply include choke. The genuine power supply, especially the caps are too small for proper sound.

A Question: What is the correct term in the colloquial english language for the heatsink assembly aluminium block, that press the power transistors on the surface from the heatsink - also to find inside of Mission Cyrus about follow link?
http://ftbw.de/files/resources/Cyrus_II_inside.png

[dynoPort]

hello all, why would RP1 & RP2 (marked) cook?

[Mooly]

Would need to see the circuit to tell you that...

I see the transformer says "220Vac". Mains in the UK can reach as high as around 256 on a good day I don't know why it would say that but for a UK product that is wrong and taken at face value means the DC rails in the amp could be somewhat higher than expected with possible problems due to over running parts/caps and consequent increased power dissipation.

[lohk]

RP1 and RP2 probably are the resistors for the power regulators for the input stages. If you have a too high voltages (because of highish mains supply) they have to work hard and get very hot.