Sansui QRX-8001 filter caps?

[kevzep]

McIntosh MC2300 does not have a soft start circuit and they have 40,0000µF caps, massive inrush, its all on the switch when you turn them on.
As long as the switch is good I wouldn't worry about it too much, it must be reasonably substantial to handle 15,000µF caps.
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[Sui-Yogi]

Okay, I’m not insisting but we all know that the switch is connected to the primary and the load is at the secondary ?
When the switch sees the load from the secondary it’s already done and too late, the contacts are in full contact …. The “tsafff” at the switch sees only the charge of the core.
Now if the contacts are burned or deformed and they are not contacting fully then yes it will get a second “slap” and tsaff coming from the load , the PSU big filter caps and any other component charging upstream .

 

[bolero]

maybe someone with the right equipment could measure & see exactly what goes on. Throw some big caps in there & get some numbers

 

[Skywatcher]

Dear Skywatcher with all do respect the inrush current at the switch is related to the size of the transformer core for a split of the second when it’s energised .
This current is caused by the sudden change in magnetic flux in the transformer's core.
Yes , if increase the capacitance of the filter caps by 100% that might add up to the problem but it’s minimal versus the proportional current flowing through the primary winding of the transformer.
I’m not an expert , by far …. but I have build quite a few transformers and the particular issue was always my concern and it seems that has nothing to do with the size of the capacitors rather the charge of the transformer at start up .
Again , no argument here , just maybe something worth investigating….i might as well be wrong here…..

Current only flows when a circuit is completed. The power supply with filter caps initially completes that circuit. Disconnect your secondary windings from the power supply input. Then use a DBT to visually see the results when you switch on the disconnected transformer.. I've done it to rule in, or rule out faulty transformer windings. The DBT barely flinches.
Yes, the transformer's magnetic flux comes up, but is minor in comparison.

 

[Hipocrates]

Any issues with going with the 22,000µF caps here? I'm wondering if the inrush current can have an affect on the power switch/premature ageing?

I'm late to the party, It might be, or maybe not... why take a chance? An extremely simple circuit will help you (attached info from a SX-1050) XraytonyB has some videos about it.
And if you need help let me know and I fix you something compact for that unit. Sometimes I use massive power supplies on my amps (dual toroidal with 6 caps banks), so I have a little bit of experience with soft starts.