strange interstage divider, why would a company do it this way

[joeyboy]

I have seen alot of companies use interstage dividers like this one:



My question is why this way, and not just the typical marshall divider. Why not just use lower value resistors because it seems that what happens is r1 + r3 get thrown in paralell with r2 and r3 gets thrown in parallel with r1, + r2. and r2 + r3 are in parallel with r1. it seems to me you just get lower value resistors doing it this way, or is there something else going on.

[Satamax]

That's a L filter followed by a voltage divider.

http://www.electronics-tutorials.com...ss-filters.htm