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Re: Isoacoustics
Looking at Isoacoustic's tech info. it seems clear that they are mostly dampening devices and have a fairly high resonant frequency (around 270 Hz?) which would tend to alter the sound by emphas…2 · -
Re: Must try MOD - Foam inside the stamped steel baskets - YES!
Yep. Confirmed. https://www.stereophile.com/floorloudspeakers/128/index.html2 · -
Re: 6500 anomaly
How does DATS calculate Mms, which equals Mmd + Air Load? DATS is saying higher Mms (Mms ratio >1). A more compliant driver with higher moving mass should have a lower Fs, which is what was measur…1 · -
Re: 6500 anomaly
Can you do an overlay of the two impedance curves (maybe you can't because vertical scaling is different)? Zmin is similar although occurring at a lower freq.. Zmax is quite a bit higher and at …1 · -
Re: 6500 anomaly
The aluminum plate was worse than the plywood. Not surprising. Aluminum is a paramagnetic material and plywood is totally nonmagnetic. https://www.nde-ed.org/Physics/Magnetism/MagneticMatls.xhtml &qu…1 ·
