Al Klappenberger Posted January 26, 2011 Posted January 26, 2011 Here's a driver that I think has potential. It's another Italian job like the B&C. I will be doing distortion tests later, but here some frequency response testing. Al K. Quote
Al Klappenberger Posted January 26, 2011 Author Posted January 26, 2011 Let's have a look down its throat. Say AAHHHhhh ... Al K. Quote
Al Klappenberger Posted January 26, 2011 Author Posted January 26, 2011 Here's the frequency response. It looks good all the way up and looks usable below 400 Hz. The distortion down there remains to be seen though. Testing for that requires changing to my B&K mike and checking a lot of levels and other details. Stay tuned.. Al K. Quote
jwc Posted January 26, 2011 Posted January 26, 2011 Ok...its not... http://www.faitalpro.com/products/schede/cd.php?id=502030150 impressive guys. Quote
jwc Posted January 26, 2011 Posted January 26, 2011 Al. When you post "30 degrees"....do you mean 30 degrees from the center axis or 15 degrees. I hope that doesn't sound silly. jc Quote
Al Klappenberger Posted January 26, 2011 Author Posted January 26, 2011 JC, It's 30 Deg off center of the horn mouth. The distance is 1 meter from the driver rather then the mouth.Yes, this is a wide range driver. It will be good for 2-way operation only of the distortion at and below 400 Hz is low enough. Al K. Quote
Rudy81 Posted January 26, 2011 Posted January 26, 2011 That driver seems promising from the outset Al. Look forward to your tests. Quote
Al Klappenberger Posted January 26, 2011 Author Posted January 26, 2011 I connected the driver through the squawker channel of a 12 dB / octave network and set the attenuation to 9 dB. This is the response. I plan to run harmonic distortion tests with a signal into the driver at 200 Hz 12 dB below the level it takes to generate 110 dB SPL at 400 Hz. This should be similar to the Klipsch stock AK-3 network slope. The distortion generated should tell if an extreme-slope network is required. To say that another way. I will see what level it takes into the driver at 400 Hz to generate 110 dB SPL then use a level 12 dB lower at 200 Hz. The difference would normally go to the woofer. The distortion at 400 Hz while generating 110 dB SPL will tell me if this driver is usable at all. I will probably not do this until tomorrow. It will require that I use ear-plugs and my wife will be home soon and will not tolerate that sort of noise for long! Al K. Quote
Guest David H Posted January 26, 2011 Posted January 26, 2011 Al, the off axis looks exceptional. This Eliptrac horn may be a good candidate for 2 way afterall. So far the Faital pro has me drooling, I am hopeful the distortion figure is acceptable at 400hz. Dave Harris Quote
Rudy81 Posted January 27, 2011 Posted January 27, 2011 I'm drooling at the possibilities as well. I have been very happy with my P. Audio drivers (K69) in two my two way setup, but I've had to EQ quite a bit from 13kHz upward. The nice thing for me is that I don't need it to go anywhere near 400Hz as you guys do. I sure hope the driver lives up to the promise. I beleive it woud be a huge 'upgrade' to be able to go 2 way with the Khorn....with the proper crossover of course. Quote
Al Klappenberger Posted January 27, 2011 Author Posted January 27, 2011 I have started the distortion tests and I AM IMPRESSED! Here's two plots. I set up the mike 2 feet from the mouth and ran the level up to 105 dB SPL with a 400 Hz tone. The analyzer computed the harmonic distortion at -38dB. That's only 1.26% harmonic distortion. Next I reduced the level need to make 105 dB at 2 feet by 10 dB and lowered the tone to 200 Hz. That is roughly what the level would be through a 12 dB / octave filter with the woofer generating the tone at 105 dB. The level out of the driver doped to 63 dB SPL with the second harmonic down about 15 dB lower. That's 17.8 % distortion but the level is so low it would not be noticed! This driver looks like a winner unless I have done something wrong! I plan to do a intermod test duplicating the condition I used on the B&C DCM50 for a direct comparison. That was with 450 Hz and 4400Hz tones. Al K. Quote
Al Klappenberger Posted January 27, 2011 Author Posted January 27, 2011 CALLING Mr KLIPSCH .. I THINK WE JUST MIGHT HAVE A 2-WAY KHORN FOR YOU! Here's a direct comparison of intermodulation distortion between the B&C DCM50 and the Faital Pro HF200 drivers. The B&C wins by a nose! But the extended frequency response of the HF200 makes it a clear choice! The levels were tested by using a B&K 4220 pistonphone and a B&K 4133 mike. I think the levels are accurate to 0.5 dB. The plots look a bit different because the B&C curve was scanned off a paper printout. The HF200 plot was direct off a computer screen dump. Al K. Quote
Rudy81 Posted January 27, 2011 Posted January 27, 2011 Very nice Al! Are you planning on becoming a distributor for those if they work out? If so, let me know the price point. I need to get my hands on one to compare with the P. Audio. Quote
Al Klappenberger Posted January 27, 2011 Author Posted January 27, 2011 Rudy, No.. I don't plan to distribute the HF200. Dave got this one from US Speaker, I think. I haven't looked around to see where else you can get them as yet. I think it looks like the one to beat if you are wanting to go 2-way though. Al K. Quote
jwc Posted January 27, 2011 Posted January 27, 2011 CALLING Mr KLIPSCH .. I THINK WE JUST MIGHT HAVE A 2-WAY KHORN FOR YOU! Oh boy......that's a big statement.....I guess I'm gonna want to hear this thing....who has a link for the estimated cost of that driver? jc Quote
Rudy81 Posted January 27, 2011 Posted January 27, 2011 http://www.usspeaker.com/Faital%20Pro%20HF200-1.htm Quote
Al Klappenberger Posted January 27, 2011 Author Posted January 27, 2011 US Speaker is asking $300.00 each for them. I think that's pretty reasonable! Al k. Quote
mark1101 Posted January 27, 2011 Posted January 27, 2011 Did anyone ever test a TAD 4002 for this type of performance?. Quote
Al Klappenberger Posted January 27, 2011 Author Posted January 27, 2011 Mark, Where can you get a TAD 4002 brand new for $300? Al K. Quote
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