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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Do you know of any plans for the JBL D130 as a 2-way with a wave-guide tweeter? posted by Frihed89 on July 10, 2012 at 21:54:48:
Hi,Old JBL Booklets should have a number.
As the drivers are basically antique and have not been produced in decades I doubt you would find anything particulary documented.
As the D130 has several dB rise in the midrange it will likely need an LCR trap to equalise this more or less flat, you can then add a "Bullet" Type HF (like JBL 075) with a 2nd order highpass.
A bit like the linked set...
For box, to get the maximum LF extension drive from a fairly high source impedance (looks best connected to the 16 Ohm Tap of a 300B or similar SE Amp) and stick in a 300 Liter box tuned to 30...40Hz.
The 30Hz tuning will give a mildly attenuated LF, similar to how JBL tunes Speakers for the Japanese market, the 40Hz tuning will be flat to around 45Hz, but not as extended low down.
Ciao T
Thor
At 20 bits, you are on the verge of dynamic range covering fly-farts-at-20-feet to intolerable pain. Really, what more could we need?
Edits: 07/10/12
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Follow Ups
- RE: Do you know of any plans for the JBL D130 as a 2-way with a wave-guide tweeter? - Thorsten 22:09:53 07/10/12 (0)
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