To Couple Or Decouple Bookshelf Speakers To Stands?
By clinging I meant any vibration the speaker produces itself. But since the mass of the floor is much bigger than that of the speaker, these will have no problem feeding back into the speaker. 5) Some feel spikes are snake oil and have no noticable effect. They had another pair of regular LS50 connected to an Arcam A49, and I did listen to those. Well, I think an audio show it's hardly the place to draw conclusions regarding sound—unless you are looking for party equipment, that is.
A suspended wooden floor will re-radiate late and spectrally incoherent - a temporally and harmonically unrelated growl, all the time. Microphones are not spiked but rather are decoupled in most instances in order to accurately capture the original pressure changes without interference from external sources. You are again mistaking the pressure changes at the diaphragm of the microphone with the pressure changes caused by the reproducing equipment.
That means the speaker will have micro-movement even if it is quite heavy. Spiking is meant to fix the cabinet in space by eliminating the spongy interface. You are once again looking only at what you consider the offending item and missing the larger problem. It is not so much the movement of the driver that causes the micro-movement. It is the drivers acting against the external air pressure in order to create a pressure change in the room.
The stands weigh around 25Kg each and use the usual large spikes on the base plate. A reduction in vibration could be felt by feeling the cabinet wall with my hand. 4) Still another site contends that decoupling is preferred because a coupled speaker allows the vibrating floor to transfer its energy to the speaker, causing the speaker to vibrate more.
The speaker cabinet is supposed to isolate the speaker vibrationally from the outside world and provide a solid housing for the cone to do its work. Domain mismatch often occurs in real applications and causes serious performance reduction on speaker verification systems. The common wisdom is to collect cross-domain data and train a multi-domain PLDA model, with the hope to learn a domain-independent speaker subspace. In this paper, we firstly present an empirical study to show that simply adding cross-domain data does not help performance in conditions with enrollment-test mismatch. Careful analysis shows that this striking result is caused by the incoherent statistics between the enrollment and test conditions. Based on this analysis, we present a decoupled scoring approach that can maximally squeeze the value of cross-domain labels and obtain optimal verification scores when the enrollment and test are mismatched.
Just how far you need to decouple is best judged by listening. One good indication could be how well the bass is studio monitor stands playing notes after some decoupling. For example soft rubber pads/foam will decouple more than hard ones, but both will decouple hundreds of times better than wood on metal. Walking across a room, or simi going by, the floor shaking, is different than a speaker introducing bass harmonics. Both shake, both vibrate, both are bad, but they are not the same. The Western response to the pandemic has unveiled how fragile our liberal international order is under stress.