Anyone using Duelund VSF capacitor in Merlin VSM

face, jim did a good job of explaing what an sbam\mbam is but the low freq filter needs more discussion. it is a 12 db filter at 28 hz that rids the woofer of out of band response below the woofer's low freq resonance. this keeps the woofer coil in the middle of the magnet "in linear drive" reducing the huge impedance swings that can bog down an amp. it also reduces 2nd and 3rd order harmonic distortion which is the booming we usually hear in the bass. impedance can jump up to 140 ohms on long excursions which will just bog down your amp. and by the way, this happens in all woofers unless they are filtered or have a mechanical brake built in. and when a woofer plays this out of band energy (in this case below 28 hz) there is audible im distortion induced within the usable bandwidth above.
so with the bam in place, you can play the speaker much louder, with less distortion in and out of the usable bandwidth and have the benefit of the bass augmentation so the speaker is flat into the low 30 hz range.
best,
bobby at merlin

Thanks for your response.

Bobby,

Thanks for the detailed explanation. Can you discuss the new switching power supply that is quieter than the previous one used? How significant is its contribution to the phenomenal sound of the MBAM?

Thanks,

Jim

jim, imo, the new and quieter supply takes a hint of false brightness out of the music so it becomes less complicated sounding. it is in reality 50 times quieter than the old one. it allows complex material to sound more resolved while coming from a blacker back ground. it is interesting that the ac ops and dc ops are again closer in absolute sound quality. do you think cells have a memory?
do you think having them charged by a quieter ac supply could affect how they sound?
i cannot say for sure but i have a feeling that this is one of the things that you heard in the master bam.
:-)

best, b

Bobby,

Thanks for the explanation. Whatever it is, I'm liking it..........a lot :-)