visco elastic polymer Aka goo 😉
Whats the difference in effect from:
Speaker cabinet with Hard mounted baffle and drivers mounted on it, then adding goo and the extra baffle.
Speaker Cabinet with hard mounted baffle on it - goo. - baffle with drivers on it.
Im sure there are more options but i hope the people answer Will Take into consideration that i dont understand what specificly “we” are trying to gain from constrained later dampening of baffles!
Whats the difference in effect from:
Speaker cabinet with Hard mounted baffle and drivers mounted on it, then adding goo and the extra baffle.
Speaker Cabinet with hard mounted baffle on it - goo. - baffle with drivers on it.
Im sure there are more options but i hope the people answer Will Take into consideration that i dont understand what specificly “we” are trying to gain from constrained later dampening of baffles!
Normally the goal is for the box to not 'ring' anywhere near its intended audio BW, i.e. acoustically 'transparent' over 'X' BW, so the driver needs a rigid/massive [inert] 'work station' to maximize its electro-mechanical-acoustical efficiency, i.e. 'Speaker cabinet with Hard mounted baffle and drivers mounted on it, then adding goo and the extra baffle'.
BUT! As driver/system Qt rises there's a point of diminishing returns where the box needs to begin increasingly damp out this 'Q-ness' with increasing Qt, so now the goal becomes 'Speaker Cabinet with hard mounted baffle on it - goo. - baffle with drivers on it'.
GM
BUT! As driver/system Qt rises there's a point of diminishing returns where the box needs to begin increasingly damp out this 'Q-ness' with increasing Qt, so now the goal becomes 'Speaker Cabinet with hard mounted baffle on it - goo. - baffle with drivers on it'.
GM
Thx for answer gm,
Point of dimishing return, Is there and aproxn Q number from where you expect it to be of benifit to have drivers on a floating baffle?
Ben
Point of dimishing return, Is there and aproxn Q number from where you expect it to be of benifit to have drivers on a floating baffle?
Ben
You're welcome!
Yes, technically at a > 0.5 Qt' [transient perfect/'critically damped'], but originally 'critically damped' referred to a 0.707 Qt'/max flat alignment and still the common 'break point': https://www.pearl-hifi.com/06_Lit_Archive/02_PEARL_Arch/Vol_05/Sec_23/1385_Critical_LS_Damping.pdf
Qt' = Qts + any added series resistance [Rs]: HiFi Loudspeaker Design
Based on the attached chart I believe a 1+ Qt alignment will benefit from some panel damping 😉:
GM
Yes, technically at a > 0.5 Qt' [transient perfect/'critically damped'], but originally 'critically damped' referred to a 0.707 Qt'/max flat alignment and still the common 'break point': https://www.pearl-hifi.com/06_Lit_Archive/02_PEARL_Arch/Vol_05/Sec_23/1385_Critical_LS_Damping.pdf
Qt' = Qts + any added series resistance [Rs]: HiFi Loudspeaker Design
Based on the attached chart I believe a 1+ Qt alignment will benefit from some panel damping 😉:
GM
