| Re: Custom LMS5400
I would call this ALLT, almost LLT. I had thought about doing it even larger, 450L tuned to 13.5hz, same size ports, but then it would have been 17" taller and had less overall output. I think it models fairly well either way. You just need to be able to put massive flares on the port ends to keep them quiet.
The LMS measured very close to published, as have all the TC drivers I have ever measured.
Published specs:
Fs: 18.00hz
Re: 4.00ohm
Qms: 13.0
Qes: 0.39
Sd: 1098cm2
Vas: 216
Le: 3.4mH
Measured:
Fs: 18.58hz
Re: 3.99ohm
Qms: 7.7
Qes: 0.40
Sd: 1098cm2
Vas: 221.3L
Le: 2.0mH
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