amp option

**meccalli** · **05-22-09, 07:55 PM**

well..i saw alot of guys using behringer's ep 2500 for powering dual Q 18's(my plan) in setups ..however..i know that the behringer doesnt put out 2500 rms maybe somewhere around 1000 so i was thinking ..maybe the dayton hpsa 1000w

plate amp might do a better job and give me a little extra features...any ideas or opinions??all is welcomed..thanks

**dgilme** · **05-22-09, 09:02 PM**

Lol, wut?

http://www.avsforum.com/avs-vb/showthread.php?t=855865

The ep2500 comes very close to rated power on all but the bridged mono low ohm load. Even then it puts out almost 4 times the dayton HSPA1000.

**meccalli** · **05-22-09, 09:10 PM**

it isnt rms power and the amp isnt stable at 2 ohm, it's a sales rep number..as tested by that very same dude..he says that on the same post...sorry..is rms power bu the amp cant produce 2500w for hours...not even minutes at most stable loads it produces 400 to 600 rms...:?...thats why i'm asking..lol

**Mike P.** · **05-22-09, 09:16 PM**

What are the coils on the Q18, dual 4 ohm?

**dgilme** · **05-22-09, 09:59 PM**

The FI Q 18 dual one ohm 18 is rated to 1000w. You are right it won't push a 2 ohm bridged mono load for more than 2 seconds. But that it would run 2 ohm loads on two channels and pushes out between 800 and 1000 watts per channel at a 2 ohm load. So you could get the dual 1 ohm Q 18s and push them both off one ep2500. Although I bet stepping up to a good crown, QSC PLX3402 or 2 ep2500s is the better option.

You can get the Q 18 in dual 1 or dual 2 ohm coils.

Still the dayton 1000w tests to 500w which isn't anywhere near what you want for 2 Q 18s

**meccalli** · **05-22-09, 11:00 PM**

500watts??....i thought that was the hspa 1000-r not the plate amp......oh btw i didnt buy the Q's as yet....still planning..im gnna buy themm to suit whatever amp i get.

**dgilme** · **05-22-09, 11:38 PM**

Quote:

meccalli wrote:

500watts??....i thought that was the hspa 1000-r not the plate amp......oh btw i didnt buy the Q's as yet....still planning..im gnna buy themm to suit whatever amp i get.

It was their rack mount amp, but to me it indicates how they rate their gear. I don't expect them to be any more accurate on a plate amp then on a rack mount.

**Mike P.** · **05-23-09, 06:55 AM**

That could have been just a bad amp. It was tested by a guy on SSA and his results showed the amp did its rated power.

**ironglen** · **05-23-09, 01:22 PM**

I'm considering buying an ep2500 here Best deal I've seen, even on old threads...thought you might want to check it out.

**meccalli** · **05-23-09, 10:35 PM**

ok well i guess ill be going behringer.....so could you tell me whats the best options in running my setup-by that i mean the greatest power output with the lesser of all risks-fi Q's come in D1 & D2 coils and im gonna be running both of the single 2500.

**Mike P.** · **05-23-09, 11:00 PM**

Quote:

so could you tell me whats the best options in running my setup

That will depend on what net volume and tuning frequency you choose.

**ironglen** · **05-24-09, 02:11 PM**

Quote:

meccalli wrote:

ok well i guess ill be going behringer.....so could you tell me whats the best options in running my setup-by that i mean the greatest power output with the lesser of all risks-fi Q's come in D1 & D2 coils and im gonna be running both of the single 2500.

Found the samson pg2200 here for a bit more to your door. UPDATE: I had a second linked company, Musician'sBuy.com, but a BBB check showed sketchy history (and address changes) with the company: advise HTS'ers look it up for yourselves. The first, SamAsh, had an excellent rating.
The pg3800 can be had for $50 more here, which I think may be better suited for you since you're running a pair, I don't know. How much RMS power is optimal for a Fi 18" speaker? (Or the Mal-x? not trying to thread steal) The samson's have a 3 year warranty if they are authorized dealers (I have to check). Anyone ever seen any test results on the samson pg2200 or pg3800?

**meccalli** · **05-25-09, 02:50 PM**

i mean..that say the amp runs better on 8ohms per channel for 600watts(just reference..not real specs)..will that be good..so from there i can choose the coils for the Q's-but im going with a 18 cubic ft box and i wanna port around 20-24
i was just looking at the ep 2500 tests on avs---@ 2 ohms/channel-it puts out 819 rms however @ 4ohms/channel the output is 633 rms so i was thinking since 2 ohm kinda pushes the amp to limits and going frorm 633 - 819 rms wont make a difference in spl...whats the point..maybe dual 2's in series per channel is a good idea......do you think the Q's will run well on 633 rms?

**fackamato** · **05-26-09, 04:38 AM**

I don't understand. The EP2500 is perfectly stable in 2ohm stereo. "pushing its limits", what do you mean? Every amp is pushed when it's near its capacity, but that doesn't matter as long as it works and doesn't overheat. The EP2500 bridged in 4ohm, or stereo 2ohm doesn't get too hot, it works.

It's designed for that.

**Mike P.** · **05-26-09, 05:04 AM**

Wiring a pair of D1's for a 4 ohm load would allow you to run the amp in bridged mode which is 2400 watts.

**meccalli** · **05-27-09, 07:55 AM**

is that an rms rating?

**fackamato** · **05-27-09, 08:33 AM**

Quote:

meccalli wrote:

is that an rms rating?

The EP2500 gives at least 2000 watts continous in 4ohm bridged mode, see this:

http://www.avsforum.com/avs-vb/showt...9#post10689199

(bridged here: http://www.avsforum.com/avs-vb/showt...5#post10755565)

Notice the distorsion, it's very low. You get more watts, but at higher distorsion.

**Ricci** · **05-27-09, 10:52 AM**

Actually it's more like 825w per channel into 2ohms and an estimated 1650w at 4 ohm bridged as tested in the link above. We are talking about bass here. 1khz is a field day for any amp. Look at the 20hz results. It kept popping fuses when the 4ohm bridge test was tried. BTW this is not a bad showing for it. It should be quite a bit better when actual program material is used.

**fackamato** · **05-27-09, 10:55 AM**

Quote:

Ricci wrote:

Actually it's more like 825w per channel into 2ohms and an estimated 1650w at 4 ohm bridged as tested in the link above. It kept popping fuses when the 4ohm bridge test was tried. BTW this is not a bad showing for it. It should be quite a bit better when actual program material is used.

That's true

, sinus waves puts the maximum amount of pressure on the amps, it's nowhere near program material as you say.

**Ricci** · **05-27-09, 10:57 AM**

Quote:

fackamato wrote:

That's true

, sinus waves puts the maximum amount of pressure on the amps, it's nowhere near program material as you say.

And still a great showing for the amp that sells for so cheap.

**Mike P.** · **05-27-09, 11:12 AM**

This all needs to be kept in perspective. Nobody listens to sine waves as the amp was tested with, lots of people are using the EP2500 in 4 ohm bridged configuration and are shaking the walls of their HT's and loving every minute of it. I've yet to hear anyone say they blew a fuse. We're talking about an amp that can be had for $270.

**fackamato** · **05-27-09, 11:51 AM**

Quote:

Mike P. wrote:

This all needs to be kept in perspective. Nobody listens to sine waves as the amp was tested with, lots of people are using the EP2500 in 4 ohm bridged configuration and are shaking the walls of their HT's and loving every minute of it. I've yet to hear anyone say they blew a fuse. We're talking about an amp that can be had for $270.

Indeed! I have two of them and I've never had any problems with them (I even bought them used

). Just changed the fan to a quiet one, that's all.

**meccalli** · **05-27-09, 10:27 PM**

thanks so much guys...well...amp...ep 2500..yep...subs...dual Q's dual 1..yep..and box....hmmnn..still gnna play with how much room i have..lol..u have no idea how much i appeciate hts...ssa home theatre forum seems to wear me out with useless childplay chit chat..thanks again
brandon

**vrmarkii** · **06-04-09, 05:33 PM**

Deffinately go with the d1's if you dont want to buy 2 amps. I'm running 2 D2 Q18's on an EP2500 and 1 amp is not enough.

**gperkins_1973** · **09-23-09, 04:49 PM**

Im getting 2 dual 1 ohm FI Q18s and runing them in series to run from a behringer Europower 4000 bridged. How do you run 2 D1 subs in to 2 4000 amps. Can you run ! D1 sub from 1 amp.

cheers graham

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