I have purchased a pair of JBL 1400 PROs and for simplicity of box making wondering how they might perform in a OB?
Thiel Parameters
Fs 52
Qts 0.31
Qms 4.1
Qes 0.34
Vas 62.3
Eff 2.5
Pe 600
Xmax 7.62
Re 4.1
Le 0.9
Sd 0.064
Bl 18.4
MMS 85
Flux 0.56
They will be crossed at 160Hz and 800Hz 24Db
Any comments are welcome
Thiel Parameters
Fs 52
Qts 0.31
Qms 4.1
Qes 0.34
Vas 62.3
Eff 2.5
Pe 600
Xmax 7.62
Re 4.1
Le 0.9
Sd 0.064
Bl 18.4
MMS 85
Flux 0.56
They will be crossed at 160Hz and 800Hz 24Db
Any comments are welcome
I can cross higher 260 Hz or should I just make a sealed enclosure as per JBL 4890 dimensions. Similar unit was used in the JBL K2.
nice/robust looking drivers
i would not worry about qts if going active/dsp route
a bit more worrying is the Fs
won't be much use below Fs on OB
you may always add subs
and the upper limit should be around 400-500hz (due to dipole peak/null and beaming beyond that)
i would not worry about qts if going active/dsp route
a bit more worrying is the Fs
won't be much use below Fs on OB
you may always add subs
and the upper limit should be around 400-500hz (due to dipole peak/null and beaming beyond that)
Below Fs, they'll roll off faster, that's all. Since it's a low-Q driver, EQ is mandatory anyway so it'll just be built-in. Couple of hundred watts will be plenty of headroom even with the EQ in place.
Chris
Chris
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