The Dude Posted March 4, 2014 Author Share Posted March 4, 2014 Ok, I hook her up, she works. But how good I don't know, there may be something wrong. Or it just may be not enough power, my amp only puts out about 100 watts 8 ohms. I know there is out put down to 20-25hz, just not a lot of spl. Is this something I need to check for air leaks, if so I have read were you can use a piece of hose can someone elaborate on how to do this. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 4, 2014 Share Posted March 4, 2014 Have you double checked your driver wiring? Exactly how did you hook them up? Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 4, 2014 Share Posted March 4, 2014 Are they wired EXACTLY like this? Quote Link to comment Share on other sites More sharing options...
The Dude Posted March 4, 2014 Author Share Posted March 4, 2014 That was the first thing I checked, positive of amp to driver 1 positive, then negative driver 1 to positive of driver 2 then negative of driver 2 to negative of amp. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 4, 2014 Share Posted March 4, 2014 Then you wired them wrong. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 4, 2014 Share Posted March 4, 2014 Negative from driver 1 goes to negative of driver 2. Quote Link to comment Share on other sites More sharing options...
The Dude Posted March 4, 2014 Author Share Posted March 4, 2014 The black line indicates the drivers are wired in parallel but the red arrow shows it wired like I have. Quote Link to comment Share on other sites More sharing options...
The Dude Posted March 4, 2014 Author Share Posted March 4, 2014 so in parallel, then I must have miss under stood that. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 4, 2014 Share Posted March 4, 2014 (edited) They're in series OUT of phase. Edited March 4, 2014 by CECAA850 Quote Link to comment Share on other sites More sharing options...
The Dude Posted March 4, 2014 Author Share Posted March 4, 2014 Wait that ins't parallel either, so if postie of amp to positive of driver 1 then negative of driver 1 to negative of driver 2 then positive of driver 2 to negative of amp. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 4, 2014 Share Posted March 4, 2014 I guess it's not the best pic. Amp + to driver 1 +. Driver 1 - to driver 2 -. Driver 2 + to amp - is how they should be. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 4, 2014 Share Posted March 4, 2014 They're not parallel, they're series out of phase. you want the drivers mechanically in phase so one has to be wired backwards as the drivers aren't facing the same direction. Quote Link to comment Share on other sites More sharing options...
The Dude Posted March 4, 2014 Author Share Posted March 4, 2014 That makes since sometimes it takes me several times to figure it out. Quote Link to comment Share on other sites More sharing options...
The Dude Posted March 4, 2014 Author Share Posted March 4, 2014 They're not parallel, they're series out of phase. you want the drivers mechanically in phase so one has to be wired backwards as the drivers aren't facing the same direction. That makes better sense well I gues we will have to wait until hmm maybe I will stay later tonight. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 4, 2014 Share Posted March 4, 2014 It's a common mistake. Switch it around and see what you think. Quote Link to comment Share on other sites More sharing options...
The Dude Posted March 4, 2014 Author Share Posted March 4, 2014 Well I was going to make you all wait until tomorrow but I figured what the heck. But oh man is that a difference, now I know what Dtel was talking about. Now only half the gain up, and lots of bass. I took a quick frequency response with rew( not the best set up but for now it will have to do), there was a little dip around 60 hz but out put was pretty flat and about 20 db up from the first one I tried. I would say this thing is a winner. Thanks for every ones help, and yes I will be building a second one once my other speaker cabs are built. Quote Link to comment Share on other sites More sharing options...
Moderators dtel Posted March 4, 2014 Moderators Share Posted March 4, 2014 That's exactly what I did, the drawing is hard to read (for me). I was ready to pitch it, as a last resort I rechecked and found the mistake, it makes a huge difference when the drivers aren't fighting each other. You did much better than me, I let it play all night thinking it might help, felt really dumb when I did figure it out the next day. I knew it wasn't the 100 wpc amp, I only have a older AVA 250 amp and I think it's rated at about 170 wpc 8 ohms and it's enough, the gain is about 1/3 and at 1/2 it is to much for music, and this is with MWM's. Pretty good for two little drivers compared to almost all drivers for subs, a cheap build overall. Glad it's working, Thanks CECAA I still get confused looking at that drawing. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 4, 2014 Share Posted March 4, 2014 I love it when a plan comes together! 1 Quote Link to comment Share on other sites More sharing options...
jason str Posted March 4, 2014 Share Posted March 4, 2014 Glad everything worked out with the project, keep up with the pics when you start making the sawdust on the Jamboree's, I'm very interested in those. 1 Quote Link to comment Share on other sites More sharing options...
The Dude Posted March 4, 2014 Author Share Posted March 4, 2014 Glad everything worked out with the project, keep up with the pics when you start making the sawdust on the Jamboree's, I'm very interested in those. Keep your eye out, I have got a good start. If I finish a couple pieces of conduit in the basement, I will be getting started back up on those through out the next week. Quote Link to comment Share on other sites More sharing options...
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