Can ep2500 power 4 15" Dayton HFs? - AVS Forum
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post #1 of 18 Old 06-23-2012, 10:19 PM - Thread Starter
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I Have an ep2500 amp that I found at my moms house. I currently have 2 dayton HFs W/ O Audio 500w Bash amp. I have only build one but I was not suprise with the output. Not to mention I bottom it out if I go anything more than 1/4 of the gain knob and -10 db on my yammy. I want to buy two more Dayton HFs and build them in 4-4.5 Cubic Ft enclosures each to prevent the sub woofers from bottoming out . I know this is cheaper than buying an SVS PB Ultra and will probably get better sound quality.

Whats you guys thoughts on this?

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post #2 of 18 Old 06-23-2012, 10:23 PM
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Yes.

At 4ohm bridged the 2500 can output at least 1,600 watts of power. The HF's in that sized enclosure will only require ~250w to hit Xmax.

Good luck!

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post #3 of 18 Old 06-23-2012, 10:31 PM
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Yes sir! Thats a great choice.

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post #4 of 18 Old 06-24-2012, 08:44 AM - Thread Starter
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ok, I tried modeling in Winisd but I couldn't get it right. What output am I looking at w 15hfs?

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post #5 of 18 Old 06-24-2012, 10:47 AM
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Yellow is 4 RSS390HF 15 in a 16cut ft enclosure. This would be four, 4cu ft enclosures co-located.

Blue is 1 RSS390HF 15 in a 4cu ft enclosure.

 

Untitled.png

 

In the real world you don't always get 6db from each subwoofer you add.

 

Yellow is with 1000w and is at XMAX. Even though the drivers like a big enclosure, xmax is reached easily with very little watts.

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post #6 of 18 Old 06-24-2012, 05:45 PM
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I am running (2) EP2500s and (8) Dayton HFs in (4) 8cuft boxes 2 driver each.

The EP2500 running in stereo 2ohms for 4 HFs in 4cuft boxes for each driver is the perfect match. This setup is amp limited and the only way you can really bottom out the drivers is testtones. 99% of the movie and music material out there with start clipping the amp before any driver sloppiness or bottoming.

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post #7 of 18 Old 06-24-2012, 08:12 PM
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Quote:
Originally Posted by UNICRON-WMD View Post

I am running (2) EP2500s and (8) Dayton HFs in (4) 8cuft boxes 2 driver each.
The EP2500 running in stereo 2ohms for 4 HFs in 4cuft boxes for each driver is the perfect match. This setup is amp limited and the only way you can really bottom out the drivers is testtones. 99% of the movie and music material out there with start clipping the amp before any driver sloppiness or bottoming.

Do you have any measurements of this set up that you could post? Maybe at the LP? I have been wondering what 8 hf's and 2 EP's could do for a while. It seems the $/dB is very attractive.
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post #8 of 18 Old 06-26-2012, 04:49 PM
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Here is my frequency response.

161

118db at 10hz with 10%thd. With movies and music, I get peaks at 122-124db and then the amps start to clip.

262

Here is where my subs are located in my theater.

445

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post #9 of 18 Old 06-27-2012, 08:52 PM
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Thanks for sharing the graphs. The response looks good. How much eq was needed to create this curve?
Do you find that these HF's get loud enough for you. In other words do they keep up with your mains regardless of the content?
Do you think there is more output to be had with a bigger amp?
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post #10 of 18 Old 06-28-2012, 12:57 PM
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Well, I run my subs about+ 8db hot and they easily keep up with my mains. There is no need for a bigger amp. With a bigger amp, I could get about +1db more output above 30hz or so but my drivers would be in danger of bottoming out.

I cross my subs over at 120hz and I had to use 3 different filters to get that FR. Luckily, they were all cuts and no boosts.

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post #11 of 18 Old 07-05-2012, 07:52 AM
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I've been looking into a multiple HF setup.1 question though, how would one wire up 4, 6 or even 8 svc 4 ohm drivers to match an amp running 4ohm stereo?

I checked out the HTS driver wiring diagram and dont see it listed for this type, only an 8 and 1 ohm final load..

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post #12 of 18 Old 07-05-2012, 10:08 AM
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post #13 of 18 Old 07-05-2012, 04:43 PM
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Quote:
Originally Posted by Sousa86 View Post

I've been looking into a multiple HF setup.1 question though, how would one wire up 4, 6 or even 8 svc 4 ohm drivers to match an amp running 4ohm stereo?
I checked out the HTS driver wiring diagram and dont see it listed for this type, only an 8 and 1 ohm final load..

What amp do you plan on using?

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post #14 of 18 Old 07-05-2012, 05:30 PM
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i have a marathon ma-5050..right now im just running a fi q18 sealed at 190L. my gaming setup is running 2 ho-44's with an o-audio 500w amp so i do have some experience with the dayton drivers. i usually reference the ht shack wiring diagrams but when i didnt see the 4-ohm listed i was kinda confused redface.gif (thanks kazador! smile.gif) but yeah the marathon is only running in 4-ohm stereo right now with the fi sub and i still have plenty power on tap cool.gif

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post #15 of 18 Old 07-05-2012, 06:06 PM
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Quote:
Originally Posted by Sousa86 View Post

i have a marathon ma-5050..right now im just running a fi q18 sealed at 190L. my gaming setup is running 2 ho-44's with an o-audio 500w amp so i do have some experience with the dayton drivers. i usually reference the ht shack wiring diagrams but when i didnt see the 4-ohm listed i was kinda confused redface.gif (thanks kazador! smile.gif) but yeah the marathon is only running in 4-ohm stereo right now with the fi sub and i still have plenty power on tap cool.gif

How many HFs are you thinking about getting? There are a lot of different ways you can wire them up with your amp depending on how many drivers you use.

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post #16 of 18 Old 07-05-2012, 06:21 PM
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i was thinking around 4, 6 or even 8 if i can make the space..wanna keep it even i guess. right now im just brainstorming different ideas so nothing is certain smile.gif if i do start with 4 that will mean i will have to wire it to 2ohm stereo.
working on enclosure designs atm and each will have 2 drivers in a line-array style

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post #17 of 18 Old 07-05-2012, 06:34 PM
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If you just run 4 HF, I would wire them at 8ohms stereo. You really don't want to run too many watts into the HFs. I would also put them in fairly small cabs (4cuft) with lots of polyfill to help keep them from bottoming out.

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post #18 of 18 Old 07-05-2012, 08:34 PM
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i see, that makes sense. i see my amp has an 8ohm stereo rating of 1200 watts..that will cover any lfe ill need i'm sure smile.gif thanks for helping me out with this little debacle..on to google sketch-up to re-do one of my designs for this! Thanks! biggrin.gif

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