erez Posted March 19, 2021 Share Posted March 19, 2021 thanks all of you for this post. just build this horn, not so accurate, from wood and cardboard, FOR TESTING Quote Link to comment Share on other sites More sharing options...
Wirrunna Posted March 20, 2021 Share Posted March 20, 2021 19 hours ago, erez said: just build this horn, not so accurate, from wood and cardboard, FOR TESTING What driver did you use for the measurement ? The thread is a really good read, lot of good information. Quote Link to comment Share on other sites More sharing options...
erez Posted March 20, 2021 Share Posted March 20, 2021 jbl 2445, Titanium. not understand why there are no good results at low frequencies. i want to try with jbl 2447. Quote Link to comment Share on other sites More sharing options...
PrestonTom Posted March 20, 2021 Share Posted March 20, 2021 1 hour ago, erez said: jbl 2445, Titanium. not understand why there are no good results at low frequencies. i want to try with jbl 2447. The 2445 should be fine unless there is a problem with it. Try taking a DCR (resistance) measure and see if it is within 10% of the recommended value. A google search will get you to the recommended values. At the very worst, a new OEM diaphragm is only $80-90 good luck, -Tom Quote Link to comment Share on other sites More sharing options...
erez Posted March 28, 2021 Share Posted March 28, 2021 (edited) thank build the k400 horn, its down to 300 with no problem. thanks Edited March 28, 2021 by erez 1 Quote Link to comment Share on other sites More sharing options...
Mikerodrig27 Posted March 29, 2021 Share Posted March 29, 2021 Pretty cool! I am surprised cardboard and OSB work well enough for even testing. 1 Quote Link to comment Share on other sites More sharing options...
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