amplifier opinions

[fresh1 0]

sooooo heres how the story goes. i got an amp a while ago, the crunch gp 2500d, and then i bought some subs, like the aq sdc 2.5s, but take a little more power (called TF X's if anyone is interested) both dual 4's wired down to 1 ohm at the amp. anyways, i'm underpowering them by a few hundred watts, and i'm looking for a replacement. in my searching i as offered an earthquake ph-d3 for a bit less than 300 rom a friend of mine, but i think he used to use it for spl comps a few years ago. anyways, the amp works great, and at 1 ohm does 3000 rms, so i figure if i'm easy with the gain i'll get the output i need, or i can match my current output at 4 ohms with 1300 rms. my question though is this,

my system is designed to be a groundpounder, so its gonna be used pretty much every day. how well will this amp fare as a daily pounder?

i've come to two other options as well, the soundstream PCA2000D (used, for nearly the same price) or if i can find one a Sundown amp. i know everyone is probably gonna say go with the Sundown, but that is like last resort depending on these two other amps. so imagine i didn't say that, how would the phd3 do in a daily setup, or should i push for the soundstream? any help will be appreciated guys,

thanks

[jcarter1885 995]

I would definantly do some research on my amp first before posting false facts and sell that amp and get something better. Here's the facts:

OK! Let me give you just a little info on the crunch amps. The GP1500D and the 2500D are rated at Max power not rms. Also these amps are unregulated so the more voltage you give them, the more power you'll get (but they do have high voltage protection around 16.4 volts). The 1500 made 857 watts at 13 volts, but a whopping 1189 at 15.5 volts. This was at 1.1 ohm reactive and all of that power is usable. The GP2500D made 1328 watts at 12.8 volts and 1704 watts at 14.75. These test were also at a 1ohm reactive. So they do more than most people would expect. Oh! The cross-overs in these amps are incredible. They have really good control over your subs. I'll tell you about the 3000 later today!

[fresh1 0]

I would definantly do some research on my amp first before posting false facts and sell that amp and get something better. Here's the facts:

OK! Let me give you just a little info on the crunch amps. The GP1500D and the 2500D are rated at Max power not rms. Also these amps are unregulated so the more voltage you give them, the more power you'll get (but they do have high voltage protection around 16.4 volts). The 1500 made 857 watts at 13 volts, but a whopping 1189 at 15.5 volts. This was at 1.1 ohm reactive and all of that power is usable. The GP2500D made 1328 watts at 12.8 volts and 1704 watts at 14.75. These test were also at a 1ohm reactive. So they do more than most people would expect. Oh! The cross-overs in these amps are incredible. They have really good control over your subs. I'll tell you about the 3000 later today!

no need to be fiesty, i was just looking for some information, and i don't see the problem in selling something in order to get something better. no disrespect or anything, but my logic says thats ok. anyways, you are probably the first guy i've ever met who really loves the GP series amps, not that i don't. in any case, i know their power ratings are listed in max, not rms. but how would go about getting my voltage up? in a couple of weeks i'm planning on getting two new batteries to replace my old one, but unless installing two batteries increases your voltage to somewhere around 14 volts, up from the 13.8ish i sit at now, i don't see myself keep the amp much longer.

don't get me wrong, its a great amp, and for the couple of months i've had it installed its been doing great.

furthermore, could you possibly tell me how i can get the amp tested? would i need to get or find someone with an rms meter or something of the sort? i'm just wondering because unless every 2500D yields the same results i would assume that my amp is putting out 1250, not the 1704 you speak of. that soundstream amp i mentioned from what i read did 1875 at 1 ohm, but the seller says it does rated power, so it makes it hard for me to believe every amp is the same.

[jcarter1885 995]

I apologize I didnt write that I got from the Maxxsonics guy on another forum, those were his words. The only way you will see those 1700rms is if your voltage stayed steady or at 14.75 volts. You are probably seeing the 1328 volts at 12.8volts (some where in that region and since music is dynamic you wont see 1200-1300 rms from that amp every second).

Voltage can be acquired by doing the Big 3 Wiring, adding a HO alternator and batteries. In your case if you stay under 2000rms then you probably wont need an HO alternator right away, just do Big 3 get another battery and a voltmeter to watch your voltage (if it falls or is not steady then more upgrades need to be made).

Naw all amps arent the same but the should be consistent with each other (but I dont test amps so I wouldnt reall know but from logic I would assume they would be a few watts off give or take some). If you want to test it then clamp it and bench test it a car audio shop or find a way to do it yourself.

[fresh1 0]

oh ok cool, I thought I wasn't making any friends lol. but yeah, I changed to a HO alternator last year and this year did my big 3, except for my alt to battery wire, I mean I did it, but the other two wires were done in 4 gauge, and that one was done with a run of 10 gauge because the terminal for the 4 gauge was too big to fit the alternator post. I was gonna put another run or two of it when I added the two batteries to make sure there was enough wire. but if adding the batteries will help with increasing my voltage as well then I guess I've gotta wait a little bit longer before I get the full potential out of my amp. thanks for the help jay-cee.

[jcarter1885 995]

no problem man, good luck.