vd ?

[nauc 10+ year member]

if subs reach xmax after exceeding their rms, shouldnt there be a uvd t/s parameter

a usable vd spec, basically, how much linear displacement the sub produces at rms in recommended enclosure

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[squeak9798 5,000+ posts]

That would be rather pointless, as power to reach Xmax is enclosure volume dependent and frequency dependent. You'd need to list that spec for every possible enclosure, at every frequency.

 

[nauc 10+ year member]

well, whats the point of a sub that can displace 3L, reaching xmax off 10,000 watts if its rms is only 500 watts

 

[ngsm13 5,000+ posts]

Venereal Disease?

NG

 

[skierxx5556 10+ year member]

^^^ haha exactly what i was thinking

 

[LoudCrownVic 5,000+ posts]

^^^ haha exactly what i was thinking

x2 I thought this was gonna be "i have ______ growing on my penis!"

 

[nauc 10+ year member]

wont most subs need more than their rms power to reach xmax in sealed recommended box

 

[Moe Lester 10+ year member]

wont most subs need more than their rms power to reach xmax in sealed recommended box

that could be frequency dependant. It might reach xmax at 20hz but not 40hz.

 

[nauc 10+ year member]

so what fq do they use when finding out a subs xmax

 

[nauc 10+ year member]

That would be rather pointless, as power to reach Xmax is enclosure volume dependent and frequency dependent. You'd need to list that spec for every possible enclosure, at every frequency.

no, it would be in recommended box off rms

so the 12w7 would be in 1.51 cubes sealed off 750 watts and then list the vd at 80hz, 40hz and 20hz

 

[thch 10+ year member]

in short, a usable Vd spec would be misleading.

 

[Moe Lester 10+ year member]

so what fq do they use when finding out a subs xmax

none

 

[squeak9798 5,000+ posts]

so what fq do they use when finding out a subs xmax

Xmax isn't frequency dependent. It's how far the sub can move while maintaining linearity. That won't change with frequency.

How much power is required to reach Xmax in a given enclosure, however, is frequency dependent.

 

[nauc 10+ year member]

Xmax isn't frequency dependent. It's how far the sub can move while maintaining linearity. That won't change with frequency.
How much power is required to reach Xmax in a given enclosure, however, is frequency dependent.

is it pretty rare for a sub to reach xmax between 30-80hz off rms power in recommended sealed enclosure

 

[XtrmAudioCncpts 10+ year member]

Venereal Disease?
NG

thats what i thought then i was like WTF