VAS lit. wat houd het in

[_ferry_]

ik heb dus 2x zeus 15" speakers gekocht, omdat mijn 12" kapot waren gegaan(waren al oudjes) maar bij de eigenschappen staat VAS lit van 169,4 wat houd dit in, das toch de minimale kaastinhoud? en geld dat ook voor basreflexboxen? met de vorige gaf hij biutengewoon geluid, de kast is 70x40x40=118 liter geloof ik.

ik zal effe een pic. posten van de kast, hoe de reflex is.

[Duck-Twacy]

foutje

[Duck-Twacy]

Uit 1 of andere FAQ:

`Fs'
Driver free air resonance, in Hz. This is the point at which driver impedance is maximum.
`Fc'
System resonance (usually for sealed box systems), in Hz
`Fb'
Enclosure resonance (usually for reflex systems), in Hz
`F3'
-3 dB cutoff frequency, in Hz
`Vas'
"Equivalent volume of compliance", this is a volume of air whose compliance is the same as a driver's acoustical compliance Cms (q.v.), in cubic meters
`D'
Effective diameter of driver, in meters
`Sd'
Effective piston radiating area of driver in square meters
`Xmax'
Maximum peak linear excursion of driver, in meters
`Vd'
Maximum linear volume of displacement of the driver (product of Sd times Xmax), in cubic meters.
`Re'
Driver DC resistance (voice coil, mainly), in ohms
`Rg'
Amplifier source resistance (includes leads, crossover, etc.), in ohms
`Qms'
The driver's Q at resonance (Fs), due to mechanical losses; dimensionless
`Qes'
The driver's Q at resonance (Fs), due to electrical losses; dimensionless
`Qts'
The driver's Q at resonance (Fs), due to all losses; dimensionless
`Qmc'
The system's Q at resonance (Fc), due to mechanical losses; dimensionless
`Qec'
The system's Q at resonance (Fc), due to electrical losses; dimensionless
`Qtc'
The system's Q at resonance (Fc), due to all losses; dimensionless
`Ql'
The system's Q at Fb, due to leakage losses; dimensionless
`Qa'
The system's Q at Fb, due to absorption losses; dimensionless
`Qp'
The system's Q at Fb, due to port losses (turbulence, viscosity, etc.); dimensionless
`n0'
The reference efficiency of the system (eta sub 0) dimensionless, usually expressed as a percentage
`Cms'
The driver's mechanical compliance (reciprocal of stiffness), in m/N
`Mms'
The driver's effective mechanical mass (including air load), in kg
`Rms'
The driver's mechanical losses, in kg/s
`Cas'
Acoustical equivalent of Cms
`Mas'
Acoustical equivalent of Mms
`Ras'
Acoustical equivalent of Rms
`Cmes'
The electrical capacitive equivalent of Mms, in farads
`Lces'
The electrical inductive equivalent of Cms, in henries
`Res'
The electrical resistive equivalent of Rms, in ohms
`B'
Magnetic flux density in gap, in Tesla
`l'
Length of wire immersed in magnetic field, in meters
`Bl'
Electro-magnetic force factor, can be expressed in Tesla-meters or, preferably, in meters/Newton
`Pa'
Acoustical power
`Pe'
Electrical power
`c'
Propagation velocity of sound at STP, approx. 342 m/s
`p'
Density of air at STP 1.18 kg/m^3 (rho)

Dit is wel een grappige site (maar er zijn er veeel meer)

[_ferry_]

`Vas'
"Equivalent volume of compliance", this is a volume of air whose compliance is the same as a driver's acoustical compliance Cms (q.v.), in cubic meters

ok, maar wat houd het in, het is dus het aantal liters/m3 maar hoe moet ik hierbij rekening houden, of hoeft dat niet?

[Duck-Twacy]

Ja, je vindt het terug in de formules voor kast design(zowel gesloten als bass reflex)

zie bv de link hier http://members.tripod.com/XSSpl/Audio/SealdBox.htm