Scotty H Posted August 27, 2015 Author Share Posted August 27, 2015 One of my past Buick Grand Nationals.... Quote Link to comment Share on other sites More sharing options...
Scotty H Posted August 27, 2015 Author Share Posted August 27, 2015 Some 3d printers.... HAAS custom 5-axis CNC mill I made..... 2 Quote Link to comment Share on other sites More sharing options...
Scotty H Posted August 28, 2015 Author Share Posted August 28, 2015 (edited) One Jubilee measures 3.3 The other 3.4ohm Why they have an 8ohm decal is beyond me...? CLEARLY, need 4ohm output from amp. ?? Can't always believe what ya read guys! Edited August 28, 2015 by Scotty H Quote Link to comment Share on other sites More sharing options...
angusruler Posted August 28, 2015 Share Posted August 28, 2015 oh, btw scotty, keep posting pics. 95% of us love them! if you are accused of showing off....good! anyone who works hard, and is proud of what they have acquired, is okey dokey with me. envy is a very funny thing. 2 Quote Link to comment Share on other sites More sharing options...
Coytee Posted August 28, 2015 Share Posted August 28, 2015 I'll be corrected if I'm wrong but, I think you are measuring the electrical resistance but, they are horn loaded and the horn adds more impedance to them acoustically (or something like that) I get lost in those conversations. 2 Quote Link to comment Share on other sites More sharing options...
Coytee Posted August 28, 2015 Share Posted August 28, 2015 Do those tops screw onto the LaScalas??? I've never seen that in my life! (not seen all versions either) Is that a factory thing or did someone alter them? That would make it much easier to tinker in there for sure. I have to reach in through the back opening to tinker. Quote Link to comment Share on other sites More sharing options...
mungkiman Posted August 28, 2015 Share Posted August 28, 2015 My '73 Type 442 La Scala speakers have screw on tops as well as a top accessed doghouse door. I still want to see photos of Herbert's motorcycles... Quote Link to comment Share on other sites More sharing options...
Scotty H Posted August 28, 2015 Author Share Posted August 28, 2015 They are very strange versions made for an organ. Had built-in amp in each One. Quote Link to comment Share on other sites More sharing options...
Scotty H Posted August 28, 2015 Author Share Posted August 28, 2015 I raced Moto-x and have had a bunch of toys....including many home-made motorcycles. I have 23yrs old and 17yr old sons. We play a lot! 2 Quote Link to comment Share on other sites More sharing options...
minermark Posted August 28, 2015 Share Posted August 28, 2015 Excellant Pics, and lifestyle, i knew you were good guy 1 Quote Link to comment Share on other sites More sharing options...
angusruler Posted August 28, 2015 Share Posted August 28, 2015 (edited) I raced Moto-x and have had a bunch of toys....including many home-made motorcycles. I have 23yrs old and 17yr old sons. We play a lot! great, more klipsch fans! my sons love their heresys!do they fight over the GN? Edited August 28, 2015 by angusruler 1 Quote Link to comment Share on other sites More sharing options...
mikebse2a3 Posted August 28, 2015 Share Posted August 28, 2015 Scotty H FYI..... here is the raw impedance plot for the KPT-KHJ-LF. I'm not aware of any recent changes but that is always possible if there has been any production changes. miketn Quote Link to comment Share on other sites More sharing options...
Scotty H Posted August 28, 2015 Author Share Posted August 28, 2015 (edited) So, hooking up a multimeter and checking ohm should mean something? Correct? If not, then how would I determine what ohm my speakers are? Pretty sure this is a decent test. One woofer does measure close enough to 8ohm to fall into that category. (6.2-6.4) Both in parallel measure close enough to 4ohm. (3.3-3.4) ?? I would call this speaker a 4ohm myself and not 8ohm. The top section measures over 12ohm.....so I would consider that to be a 16ohm speaker. pretty wild eh? Edited August 28, 2015 by Scotty H Quote Link to comment Share on other sites More sharing options...
Scotty H Posted August 28, 2015 Author Share Posted August 28, 2015 I'll be corrected if I'm wrong but, I think you are measuring the electrical resistance but, they are horn loaded and the horn adds more impedance to them acoustically (or something like that) I get lost in those conversations. I dunno, but my amp only cares about the electrical resistance to be happy..... Quote Link to comment Share on other sites More sharing options...
mikebse2a3 Posted August 28, 2015 Share Posted August 28, 2015 So, hooking up a multimeter and checking ohm should mean something? Correct? If not, then how would I determine what ohm my speakers are? Pretty sure this is a decent test. One woofer does measure close enough to 8ohm to fall into that category. (6.2-6.4) Both in parallel measure close enough to 4ohm. (3.3-3.4) ?? I would call this speaker a 4ohm myself and not 8ohm. The meter reading is the DC Resistance but it's the AC Impedance over the bandwidth of operation that is important for deciding which Output Tap(If available) of an amplifier to use. You are correct that 4ohm is the best description for the Jub LF as the impedance plot clearly shows. Quote Link to comment Share on other sites More sharing options...
Islander Posted August 28, 2015 Share Posted August 28, 2015 (edited) As mikebse2a3 pointed out, resistance and impedance are not the same thing, although they use the same value (ohms). Checking the resistance with an ohmmeter will tell you whether you have continuity (no broken wires or connections, for example), but does not show you the impedance of the speaker. The impedance shows what the amplifier is seeing while the speaker is operating in its cabinet or driving its horn. It varies greatly with frequency, so the single impedance number (4 ohm, 8 ohm, whatever) assigned to a speaker is a nominal value, really more of a judgement call than an absolute value. Edited August 29, 2015 by Islander 2 Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Chief bonehead Posted August 29, 2015 Klipsch Employees Share Posted August 29, 2015 One Jubilee measures 3.3 The other 3.4ohm Why they have an 8ohm decal is beyond me...? CLEARLY, need 4ohm output from amp. ?? Can't always believe what ya read guys! Pretty simple. It's 8 ohms nominal. A speaker does not present a constant impedance to the amp. Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Chief bonehead Posted August 29, 2015 Klipsch Employees Share Posted August 29, 2015 As mikebse2a3 pointed out, resistance and impedance are not the same thing, although they use the same value (ohms). Checking the resistance with an ohmmeter will tell you whether you have continuity (no broken wires or connections, for example), but does not show you the impedance of the speaker. The impedance shows what the amplifier is seeing while the speaker is operating in its cabinet or driving its horn. It varies greatly with frequency, so the single impedance number (4 ohm, 8 ohm, whatever) assigned to a speaker is a nominal value, really more of a judgement call than an absolute value. Absolutely correct. Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Chief bonehead Posted August 29, 2015 Klipsch Employees Share Posted August 29, 2015 I'll be corrected if I'm wrong but, I think you are measuring the electrical resistance but, they are horn loaded and the horn adds more impedance to them acoustically (or something like that) I get lost in those conversations. I dunno, but my amp only cares about the electrical resistance to be happy..... I take it that your amp is a DC amp. Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Chief bonehead Posted August 29, 2015 Klipsch Employees Share Posted August 29, 2015 Some 3d printers.... Very cool 5 axis machine. HAAS custom 5-axis CNC mill I made..... Quote Link to comment Share on other sites More sharing options...
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