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In the Forum: Audio Discussions
In the Thread: Initial thoughts about new/old Lamm ML2s

Post Subject: ML2 cap functionsPosted by skushino on: 6/22/2010

Paul-

Again the disclaimer - I don't have a schematic nor is the circuit board fully visible, so these are solely my speculations and I could be wrong.

'What is the MKP's value, and why do you think it's "the" coupler, while the 'Cubes are else?'

I forgot the exact value (~.47uf?), but it was smaller and more consistent with a coupling cap, especially compared to the huge 10uf cube 935.

'What do you think the 'Cubes filter?'

Not sure - maybe the power to the input or driver. In which case the 935 bypassed with the 950 should be more than adequate.

'Mightn't there be several couplers in a 3-stage amp?'

Maybe. There may be another coupler I missed or maybe the other stages are direct coupled.

My goal wasn't to reverse engineer Lamm's design, just to understand whether or not there was a benefit to replacing the cube 935s. I admit to obsessing about them... since the ml2 is single ended, mono, it seemed odd for the cubes to be side by side. plus the value seemed too large for a coupler. I just need to connect everything and verify the amp with new sockets is stable and solves my operating point issues.

Scott

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