wsu99999 Posted February 19, 2009 Author Share Posted February 19, 2009 Man! That is really too bad. So there are only two models of high pass filters that will work. I guess I really don't even understand what the high pass filter does. Wouldn't my Marantz control any signal going to the subwoofer? If I tell the marantz not to send anything out the LFE channel above 60hz or 80hz, how can the material still get there? Thanks for all of your help guys, I guess I really am still a bit confused - although you have all been very helpful! Quote Link to comment Share on other sites More sharing options...
michael hurd Posted February 19, 2009 Share Posted February 19, 2009 Here is the same driver, in the same box with the same amount of power. RED is what you propose with no high pass filter to keep the driver from bottoming below tune, GREEN is with a proper highpass filter at 23 hz. If you use the sub simply for music, you may get away with using no high pass filter, as long as you don't turn it up too high. However, there are many movies with a lot of sub-sonic content as low as 5 hz ( like War of the worlds for instance ) that would break that driver. Even with a strong enough signal at 16 hz ( pipe organ stuff ) will bottom the driver without a high pass filter. A sealed box does not suffer from this, but in a vented box below tune, there is no 'spring' to control cone movement below tuning. Quote Link to comment Share on other sites More sharing options...
wsu99999 Posted February 19, 2009 Author Share Posted February 19, 2009 So, if I'm taking this correctly, the Marantz will limit frequencies above say 80hz from going to the subwoofer, I need the device to limit the frequencys below say 20hz from going to it. Is that right? Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 19, 2009 Share Posted February 19, 2009 Man! That is really too bad. So there are only two models of high pass filters that will work. I guess I really don't even understand what the high pass filter does. Wouldn't my Marantz control any signal going to the subwoofer? If I tell the marantz not to send anything out the LFE channel above 60hz or 80hz, how can the material still get there? Thanks for all of your help guys, I guess I really am still a bit confused - although you have all been very helpful! You may be confused about what a high pass filter does. A high pass filter lets everything ABOVE a set point pass. So if you select 20Hz, then everything below 20Hz should not pass through the filter. Everything HIGHer than 20Hz should PASS. Bear in mind, it's not a brick wall, but that's the general idea. What we're trying to accomplish is not having, lets say some info down to 10 Hz get to your driver. The driver will try to reproduce this frequency and in doing so extend itself farther than it should and damage itself. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 19, 2009 Share Posted February 19, 2009 So, if I'm taking this correctly, the Marantz will limit frequencies above say 80hz from going to the subwoofer, I need the device to limit the frequencys below say 20hz from going to it. Is that right? You got it as I was typing the above reply. Quote Link to comment Share on other sites More sharing options...
michael hurd Posted February 19, 2009 Share Posted February 19, 2009 Refer to the above picture. If you had not already gone ahead and purchased the EP2500, you could have gotten a subwoofer plate amplifier that has a built in high pass filter that would have worked for your application. [:^)] Quote Link to comment Share on other sites More sharing options...
wsu99999 Posted February 19, 2009 Author Share Posted February 19, 2009 Now I gotcha. Thanks so much for all of the help. So for that Behringer Feedback Destroyer, couldn't I set the gain extremely low on everything below 20hz? Wouldn't that essentially do the same thing? Only reason is it would save me 60 bucks. Clearly my logic is flawed or you would have already said it would work. I guess I'm going to have to spring an extra 100 out. This is getting to be a hassle! Quote Link to comment Share on other sites More sharing options...
michael hurd Posted February 19, 2009 Share Posted February 19, 2009 No. the Behringer does not eq below 20 hz. Getting back to the beginning, if you are thinking about selling the driver anyways... why not just build a new box and use a bigger sub that's suited to a sealed box and the power of the EP2500 you already have coming? If you have next to zero for skils and tools you can still build one for cheap if you get someone to cut all the pieces for you, like a cabinet shop or big box store / lumberyard etc. Glue and clamps would cost you a few bucks, no more than about $ 60 or so. You can paint it with latex house paint if you seal it up with a shellac first. If aesthetics are higher on the priority, then you might consider a veneer finish. Also, if you have someone who does a bit of woodworking, they may already have clamps or a shop you could use. A larger diameter sub with a bit less excursion can tromp that dayton 12" sub in terms of output, while sounding clean. Many things to think about. For a first build, it's easiest to build a sealed sub, hard to go wrong. Quote Link to comment Share on other sites More sharing options...
wsu99999 Posted February 19, 2009 Author Share Posted February 19, 2009 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130288138583&ssPageName=ADME:X:RTQ:US:1123 Is this what I need? Please respond - the guy will send it to me for 80 shipped. I think it's the same as what you linked me to, but I want to be 100% sure. Quote Link to comment Share on other sites More sharing options...
wsu99999 Posted February 19, 2009 Author Share Posted February 19, 2009 If the above is what I need - is there anything else? What wires? I have xlr to rca cables (2 of em) will that be enough? Or do I need a xlr to Rca from the Marantz to the ultragrain pro then xlr to xlr from the ultragrain to the behringer? If so, I need to buy another cable too. Quote Link to comment Share on other sites More sharing options...
wsu99999 Posted February 19, 2009 Author Share Posted February 19, 2009 Oh - forgot to mention... I did get a new box. 19.5 x 19.5 x 19.12 with 2 - 3" ports 18.41 long. 3 ft^3 after displacement and tune to 25 hz. Quote Link to comment Share on other sites More sharing options...
michael hurd Posted February 19, 2009 Share Posted February 19, 2009 Yes, that is the same item, $ 80 shipped is a decent deal in my opinion. You need ( 1 ) RCA to XLR cable from the Marantz to the Ultragain PRO MIC 2200, then you need either a male to female XLR cable, or a XLR to 1/4". ( make sure the gender is correct ) I would simply go with a male to female XLR, you should be able to pick up one at a music instrument shop locally, or off eBay. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 20, 2009 Share Posted February 20, 2009 As far as cables go, don't forget to check monoprice.com. Their cables are stupid cheap and high quality. I've never bought a bad cable from them. Quote Link to comment Share on other sites More sharing options...
wsu99999 Posted February 25, 2009 Author Share Posted February 25, 2009 Hey - I got my Ep2500 today and have the ultragain 2200. Can someone please tell me the settings for the ultragain 2200 that are needed to save my dayton dvc sub from blowing? Thanks! Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 25, 2009 Share Posted February 25, 2009 I've not used that particular device, maybe Michael will chime back in. i did see however that your manual describes what you are looking for in section 5.1.4. You just need to cut the frequencies below your box's tuning frequency. Quote Link to comment Share on other sites More sharing options...
michael hurd Posted February 25, 2009 Share Posted February 25, 2009 wsu: I will measure with REW tonight, and post a picture of the dials, plus mention which buttons need to be in or out. I am at work right now, might be 12- 1 am or so. If not tonight, first possible time tomorrow. Quote Link to comment Share on other sites More sharing options...
wsu99999 Posted February 25, 2009 Author Share Posted February 25, 2009 Mike, I sincerely appreciate your help through all of this. I went against your advice and just ran the behringer to my sub without the preamp (or whatever you call it) and have played with all of the jumper settings, but nothing I do seems to give the sub much power. It's clearly hooked up because it's getting a little juice and I've tried both channels with the same results. I know it's probably something stupid - what am I missing? Quote Link to comment Share on other sites More sharing options...
michael hurd Posted February 26, 2009 Share Posted February 26, 2009 Increase the gain control on the front of the amp, and your AVR receiver needs to be bumped up as well. For instance, if your AVR sub out level goes to say +10, set it to at least 3/4 of that, so about 8 in that case. I will measure the throughput of the Behringer Ultragain MIC PRO 2200 tomorrow for you, and post a picture. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 26, 2009 Share Posted February 26, 2009 It's clearly hooked up because it's getting a little juice and I've tried both channels with the same results. I know it's probably something stupid - what am I missing? Be sure you check DIP switches #3 and #8. You may be cutting all your output below either 30 or 50 Hz. Quote Link to comment Share on other sites More sharing options...
wsu99999 Posted February 26, 2009 Author Share Posted February 26, 2009 I've set my sub to as high as it will go in my receiver as well as cranked up the amp all the way. Their isn't much power pushing the sub and with the gain so high on the receiver, I think it's affecting the sound a bit (it's somewhat distorted). The jumper settings are right as far as I know (i have the limiter off, and I read all the instructions). I've heard of some people having issues with too little voltage going from the receiver to the amp, but I'm running a farily new Marantz so I would think it should be ok if any receiver would be. I'm definately not spending any more money to get a converter box that jumps the voltage up - if that's the case, all this gear will be listed on the forum in the "garage sale" section! I also heard that if you hook up a BFD (something I found locally and passed on earlier in this thread for 40 bucks) it will fix the voltage problem. I'm hoping that the preamp will do this as well! 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.