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In Reply to: RE: any reasonably priced cone drivers when horn loaded will keep up with midbass horns? posted by Bill Fitzmaurice on October 22, 2016 at 05:14:12
Hi Bill,how deep and what expansion horn? what kind of highpass? Here's a similar Eminence 6.5" of mine with 30oz magnet, slightly lower qtc bare then on a short JBL waveguide with 1:1 throat. There's no "Gain" above a point of ~1K5 - just on the low end (which is helpful). When the response is made flat on the low end with just a cap, it seems to do well, has a sharp low end cutoff and distortion is low at 500Hz - I don't think its as sensitive a say a Klipsch style paging driver on long exponential horn setup. (?)
497Hz ~ 1 watt sine overtones (indoors)
630SS bare driver - interestingly, H2 is lower without the waveguide
630SS plus JBL waveguide
Karlson Evangelist
Edits: 10/22/16 10/22/16Follow Ups:
The horn I use it in has a 500Hz-2.5kHz pass band, it's fairly flat with 105dB/w sensitivity. It's an 18mm long CD horn with a 40sq cm throat, 500 sq cm mouth, and a phase plug.
that's more extended than I'm getting. If I were to experiment with adding a plug to the existing JBL waveguide and 630SS combo, might that improve performance? - or would that create new problems? - several discs of decreasing diameter could be stacked - if that matters vs one disc
Karlson Evangelist
A phase plug helps HF extension, whether it will work in that JBL horn I can't say.
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