tromprof Posted March 19, 2015 Share Posted March 19, 2015 (edited) Ok, I am buying a pair of used tractrix horns that are designed for 2 inch drivers. What would be the effect of using a 2 inch 8 ohm driver instead of a 16 ohm K55 with an A type crossover. I know it will screw some things up but what and how. Edited March 19, 2015 by tromprof 1 Quote Link to comment Share on other sites More sharing options...
djk Posted March 19, 2015 Share Posted March 19, 2015 Just move it down on tap on the crossover and all should be well. Quote Link to comment Share on other sites More sharing options...
tromprof Posted March 19, 2015 Author Share Posted March 19, 2015 (edited) Just move it down on tap on the crossover and all should be well. I have heard this mentioned before but I dont fully understand. Can you explain a little more how this is done. Edited March 19, 2015 by tromprof Quote Link to comment Share on other sites More sharing options...
djk Posted March 20, 2015 Share Posted March 20, 2015 The mid on a type 'A' is to tap 4 (marked on autoformer), just move it to tap 3 (soldering required). 1 Quote Link to comment Share on other sites More sharing options...
wvu80 Posted March 20, 2015 Share Posted March 20, 2015 (edited) Pictures djk, we need pictures! Your instructions infers that everybody knows exactly what you're talking about; I don't! It's like if I needed to put a new piston in my V-6, and your instructions to me were "first disassemble engine..." Edited March 20, 2015 by wvu80 Quote Link to comment Share on other sites More sharing options...
mustang guy Posted March 20, 2015 Share Posted March 20, 2015 (edited) Dave, Here is a picture of such a transformer. Different taps will produce different voltages related to the input voltage. Just like a transformer on the train set you had as a kid where you push the lever forward and the train goes faster. The higher taps produce more voltage, and lower ones produce less. It's a way to permanently and passivly change one of the drivers output to match the others. On the schematic below, you can see such a transformer with choices of where to solder: See how the squaker and tweeter come from different taps. Look at the bottom of the schematic about impedance and attenuation... Edited March 20, 2015 by mustang guy 1 Quote Link to comment Share on other sites More sharing options...
Deang Posted March 20, 2015 Share Posted March 20, 2015 What is the sensitivity of the new (8 ohm) driver? Quote Link to comment Share on other sites More sharing options...
tromprof Posted March 20, 2015 Author Share Posted March 20, 2015 What is the sensitivity of the new (8 ohm) driver? 108 db. I am looking at the Pyle PDB952 http://www.parts-express.com/pyle-pdb952-4-titanium-8-ohm-horn-bolt-on-driver--292-2604#lblProductDetails Quote Link to comment Share on other sites More sharing options...
Deang Posted March 20, 2015 Share Posted March 20, 2015 In the link provided, to the right, you'll see a spec sheet that you can download. Pyle does not tell us what horn they had the driver on, but vendors typically show their products in the best positive light. Notice that at 400Hz, the driver is 10dB or more down in relationship to rest of its response. The majority of titanium loaded drivers of this type aren't very good candidates for use in the Klipschorn. You are better off with a good pair of K-55s and some adapters. Bob sells an affordable Selenium that seems to be fairly popular, you might want to look into that. 1 Quote Link to comment Share on other sites More sharing options...
MookieStl Posted March 20, 2015 Share Posted March 20, 2015 I am not going to steer you in any direction but I will tell you my experience. I stopped using Pyle many years ago for a wide range of reasons but have NO experience with the one you have choosen. I have used the Selenium D250X (same as Crites offers but I got from PE) and absoluely love them. They are less than half the price also. Now I put them in a pair of Speakerlab Model 6's that I originally built in 1980, so that is not quite up to par with a Klipschorn. Thats my 2 cents. Quote Link to comment Share on other sites More sharing options...
tromprof Posted March 20, 2015 Author Share Posted March 20, 2015 In the link provided, to the right, you'll see a spec sheet that you can download. Pyle does not tell us what horn they had the driver on, but vendors typically show their products in the best positive light. Notice that at 400Hz, the driver is 10dB or more down in relationship to rest of its response. The majority of titanium loaded drivers of this type aren't very good candidates for use in the Klipschorn. You are better off with a good pair of K-55s and some adapters. Bob sells an affordable Selenium that seems to be fairly popular, you might want to look into that. I had not seen that link. Looks like I need to do more research. I would like a 2 inch driver that goes down to 400 HZ. Also one that sounds good and is inexpensive. Too much to ask for? Quote Link to comment Share on other sites More sharing options...
tromprof Posted March 20, 2015 Author Share Posted March 20, 2015 I am not going to steer you in any direction but I will tell you my experience. I stopped using Pyle many years ago for a wide range of reasons but have NO experience with the one you have choosen. I have used the Selenium D250X (same as Crites offers but I got from PE) and absoluely love them. They are less than half the price also. Now I put them in a pair of Speakerlab Model 6's that I originally built in 1980, so that is not quite up to par with a Klipschorn. Thats my 2 cents. That is a one inch driver, I am looking for a 2 inch. Quote Link to comment Share on other sites More sharing options...
MookieStl Posted March 20, 2015 Share Posted March 20, 2015 There are also 2" models available (go to PE website). I didnt want to comment on a driver I had not used, just the one that I did. Specs look good on the larger driver as well, not quite as economical but still a few bucks cheaper than the Pyle. Good luck. Quote Link to comment Share on other sites More sharing options...
MookieStl Posted March 20, 2015 Share Posted March 20, 2015 Ignore my earlier post, the 2" Selenium are much more expensive and don't handle 400hz very well. I need to stop trying to operate from memory. It's the second thing to go! Quote Link to comment Share on other sites More sharing options...
OO1 Posted March 20, 2015 Share Posted March 20, 2015 What is the sensitivity of the new (8 ohm) driver? 108 db. I am looking at the Pyle PDB952 http://www.parts-express.com/pyle-pdb952-4-titanium-8-ohm-horn-bolt-on-driver--292-2604#lblProductDetails it is 22 lbs mid driver - is this for real - 111 $ - looks like a super bargain - the diaphragm alone would cost that much on others - all the way for me - Quote Link to comment Share on other sites More sharing options...
OO1 Posted March 20, 2015 Share Posted March 20, 2015 I sure What is the sensitivity of the new (8 ohm) driver? 108 db. I am looking at the Pyle PDB952 http://www.parts-express.com/pyle-pdb952-4-titanium-8-ohm-horn-bolt-on-driver--292-2604#lblProductDetails it is 22 lbs mid driver - is this for real - 111 $ - looks like a super bargain - the diaphragm alone would cost that much on others - all the way for me - I sure would like to know who makes this mid driver for Pyle - the more I read about this , the more I like it - Quote Link to comment Share on other sites More sharing options...
tromprof Posted March 20, 2015 Author Share Posted March 20, 2015 I wonder how well EQing the Pyle up a bit in the 400-500 HZ range would work? Quote Link to comment Share on other sites More sharing options...
djk Posted March 21, 2015 Share Posted March 21, 2015 (edited) Terminated tube (what goes into the throat of the horn), flat down to 400hz or so. Used, the EV DH1A can be a real bargain. Edited March 21, 2015 by djk 1 Quote Link to comment Share on other sites More sharing options...
toolz Posted March 21, 2015 Share Posted March 21, 2015 (edited) Take a look at the PRV Audio D3220Ph or the PRV Audio D4260Ph. The look to fit your needs. Edited March 21, 2015 by toolz Quote Link to comment Share on other sites More sharing options...
tromprof Posted March 21, 2015 Author Share Posted March 21, 2015 Take a look at the PRV Audio D3220Ph or the PRV Audio D4260Ph. The look to fit your needs. Any direct experience with these? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.