tofu Posted January 20, 2006 Author Share Posted January 20, 2006 guy from georgia 8t Quote Link to comment Share on other sites More sharing options...
steamer Posted January 21, 2006 Share Posted January 21, 2006 I have the 8T's on my 511's,your gonna lovem soooo much better than stock,happy listening Greg Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 so, back to my original question (before the distortion and phase change issues).. what exactly do i need to change (disconnect) in my ALK x-over's to have these running two-way? Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 A or B? Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 bump i'd kind of like to start working on these soon Quote Link to comment Share on other sites More sharing options...
jwc Posted January 21, 2006 Share Posted January 21, 2006 Al will kill me here as he should answer this. However, entertain this. I started by removing the ALK label as I don't want anyone to think this is a AL's idea. NOT OFFICIAL. I would assume you would want to remove the bandpass for starters....the 3.0mHy. As you would want ALL frequencies above 400Hz going to the 902T. For 2nd order squawker....try the schematic as shown. If you want first order, remove the parallel inductor on the sqwauker and change the cap to 50uF. The first cap on the sqwauker could be a little miscalculated but the principle is there. To just try it, leave it at 40uF (30+1), remove all that goes to the tweeter and remove the 3.0mHy amd the 2.2uF just after it. Good luck...I would have the guts to try it. jc Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 i'll get on that now. thanks jc! Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 so with keeping it second order and not purchasing new parts, the schematic should look as follows correct? Quote Link to comment Share on other sites More sharing options...
jwc Posted January 21, 2006 Share Posted January 21, 2006 No! wait...to make it second order, remove that 2.2uF and add the 3.4mHy in parallel. You probably don't have one. Therefore, just remove that 2.2uf parallel with the sqwawker. This will be first order high and low pass. To get to the second order...you will need new parts. Note, this will be first order with a contant impedance on the Sqwauker. Not an ALK. Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 ah, a 6db slope (first order) doesn't sound too attractive to me. i suppose i'll just leave things three way and eventually sell off the diy alks for whatever i paid in parts and just build some es networks Quote Link to comment Share on other sites More sharing options...
jwc Posted January 21, 2006 Share Posted January 21, 2006 Tofu. I gotta run an errand. Help you more when I get back. It wouldn't be exact but you could use that 3.0mHy inductor and run it parrallel instead of series to get to second order. The "crossing over" wouldn't be exact but will work. Can't use any of the 2.2uF. So again...either just the 40uF where it is alone for first order or the addition of the 3.0mHy in PARALLEL for second order. I'm sure you will have to fiddle with taps to get what you want. Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 thanks for the help Quote Link to comment Share on other sites More sharing options...
sfogg Posted January 21, 2006 Share Posted January 21, 2006 "ah, a 6db slope (first order) doesn't sound too attractive to me" That is what you are already running now. The woofer/squawker crossover in Al's Type A is first order. It is the tweeter/squawker crossover that is third order I think. From your last schematic I think you also need to remove the 2.2uf cap to ground on the squawker, that is part of the low pass on the squawker which you don't want. Try it first order as a two way first to make sure you like the high end response before thinking about the ES networks. If you decide you like and want to go with the ESs mine are still available FS BTW. Shawn Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 ah thought i read it was 2nd order somewhere. excuse my ignorance Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 if i use jc's schematic and use my leftover caps that i'll be removing to get my 40uf to around 50, about how badly will my crossover point be off if i stick with with the .30mh inductor? a higher crossover point wouldn't be bad if that's the case... Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted January 21, 2006 Share Posted January 21, 2006 If you REALLY want to convert my Universal netwrok to 2-way, here's how. Remove the 2.2 uF in the earlier drawing. BUT: Dont do it! The crossover will be 400 Hz and I know of no driver that will go from 400 Hz up an handle any kind of power! Al K. Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 i'm going to be using the altec 902-8t's with this, al still a no-no? Quote Link to comment Share on other sites More sharing options...
jwc Posted January 21, 2006 Share Posted January 21, 2006 Tofu. That XO point will be fairly close to test it. But I hate to see you make chop suey out of you network. Easy trial for you. Do just what the attached schematic shows. Just get an alligator clip with wire or solder a wire like the yellow line shows. Disconnect the inputs to tap 5 W/O REMOVING THE RESISTOR. You basically now have jumped from the 40uF cap to tap 5. In a nice way stop the input to the twweter section. Yes this is First order w/o destroying your ALK. This isn't such a bad thing. Think of it as a quick Super AA or DHA going two way. I think it will sound good. I think you will then see the benefits of your 902T. Just don't crank it Quote Link to comment Share on other sites More sharing options...
jwc Posted January 21, 2006 Share Posted January 21, 2006 I think my above suggestion will work for testing and I think you will be pleased. Don't crank it. IB Slammin has a 902 crossed at 400Hz and likes it but doesn't turn the volume full blast to challenge it. Since the pro has jumped in...I will shut up for now. Quote Link to comment Share on other sites More sharing options...
tofu Posted January 21, 2006 Author Share Posted January 21, 2006 jc i have no problem with rewiring anything (i've been too lazy to solder it together and everything is just crimped/twisted for now). i guess my laziness paid off! i just don't want to have to order more parts at the moment. been spending enough money as it is. i'm really looking for the best way to go with what i'm working with right now. Quote Link to comment Share on other sites More sharing options...
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