posted
For electrical I have a ohio generator alt(180 at idle 210 peak) and 3 to 4 yellow top batteries. Also 0 guage wire (power, ground, batt ground, and alt) What do you think I would get more power out of. I most likley will be running closer to 12.5 volts than 14.4. Also do you think eathier of these amps will beat out my ca200(massive audio) and by a big or small margin. Thanks for the help. Also each bmf is 550 and the us amp is 1100. Thanks
------------------ 96 Green Neon coupe: My System: - - - - - Nak 45z memphis ms6.1 massive audio rs-50 2 12 treo ss massive audio ca200 ohio generator 180 amp alt stinger dry cell battery 1 frad cap
posted
we'll im dead locked on this one. when the 2 crossfires are put to one they both would put out about the same amount of power even at 12.4v . and the draw of 2 crossfires would be less than the 2000x but not by to much.. the same price either way.. both very clean although some may say they can hear the difference between a/b and class d i cant. flip a coin for it...lol well look at the features of each amp crossovers...etc and decide also that 2000x is massive make sure you got room and that you can keep it cool those things could fry eggs on christmas
posted
If I were in your position, I'd go with the 2000x. The x-fires won't draw anywhere near as much current, but the 2000x will give you a LOT more power. Usually the issue is having the current. you have that in spades...
------------------ Jeff Sony CDX-7850 Sony XDP766-EQ 3 Sony 752-EQX 2 Sony ES 6.5 Seperates 2 Crossfire CFA-1000D DD-9515
posted
spades? Meaning I have enough power? I have heard that the us amps draw like 300 amps. That is a ton. So with my electrical set up you think that the us will out perform the crossfires. Thanks for the help more opinions please
------------------ 96 Green Neon coupe: My System: - - - - - Nak 45z memphis ms6.1 massive audio rs-50 2 12 treo ss massive audio ca200 ohio generator 180 amp alt stinger dry cell battery 1 frad cap
posted
Any time u tie 2 crossfires or memphis amps together u dont get double power, u get about 60% more. So if its rated @ 1000 then bridging 2 togethter u will get about 1600 and granted the crossfire does more than 1000 but u get the idea. So I would definatly go with the 2000x, it pulls about 235-250 amps depending on the voltage u feed it.
------------------ Nothing beats EXPERIENCE!!! Or Team 2 Loud Current World record holder 1-2 extreme 168.0 www.audione.com
Posts: 225 | From: cape girardeau, mo. usa | Registered: Aug 1999
| IP: Logged |
posted
joe may be right, the efficiency for linked amps should be around 7% not 40% it depends on the amp. i had a couple of engineers test a 2000X, they said it was really well designed and clean sounding, but only did 1673 watts true power. but this illustrates a great point, who care how much watts a amp says it puts out, with impedance spikes ect.. you may never see it. the way to tell hook the amps up in your system and the highest db's = most clean power. ill wait for the 4000x myself.
posted
i have question..what is the application? a 200x needs a 4 ohm load, or 2 for short burps only. a pair of BMF's needs a 2 ohm load, but to get more power and still be stable(for the most part) put the pair on a 1 ohm load, which is .5 each...nominal of course. if you plan on a 1 ohm load, use the BMF's. and how many of them are you running?
------------------ Luke Fidler Team Watt?? Lasting Impressions
I be strokin'......
Posts: 1930 | From: state college, pa | Registered: Sep 1999
| IP: Logged |
posted
Normally I wouldn't really get into this because I'm slightly biased, but when I see disinformation I have to say something.
quote:Originally posted by joe: Any time u tie 2 crossfires or memphis amps together u dont get double power, u get about 60% more. So if its rated @ 1000 then bridging 2 togethter u will get about 1600 and granted the crossfire does more than 1000 but u get the idea. So I would definatly go with the 2000x, it pulls about 235-250 amps depending on the voltage u feed it.
For the record, our BMF 1000D's put out 1286 watts into 1ohm at 14.4V RMS. They pull less than 120 amps to do this. Now if you hook 2 of them together "bridged" then you will get at least 2500 watts RMS into 2ohms at 14.4Vn not 1600. Where are you getting the 1600 watt figure?
quote:Originally posted by Y2spl: joe may be right, the efficiency for linked amps should be around 7% not 40% it depends on the amp...
7% not 40%???? Where are you getting these figures? The efficiency on our BMF1000D is 86% and will fall to 72% at 1 ohm for a single amp or 2ohms for two amps.
By the way the BMF 1000D makes the most power it will make at .9 ohms. If it is dropped below that impedance the power output will start to decrease. It's 1.8ohms for two amps "bridged".
Chris
------------------
[This message has been edited by -Chris McSweyn- (edited 01-23-2001).]
posted
hey chris what's up i haven't heard from you since finals. i meant that the eff loss when you link two together drops 7% from double power. sorry if that was confusing.
posted
well my treo ss are dual 2 so Iam sitting at 2 ohm mono right now. couldnt I run a bmf to each sub that would be 1 ohm mono I think to each. If I got the us I would trade in subs so the ohms would work out.
------------------ 96 Green Neon coupe: My System: - - - - - Nak 45z memphis ms6.1 massive audio rs-50 2 12 treo ss massive audio ca200 ohio generator 180 amp alt stinger dry cell battery 1 frad cap
posted
i have only used the CFA's, but i know i got quite a bit more power from them at .5 each.....but like i said, having enver used the BMF's i shoulda stated i meant the CFA's from experience.
------------------ Luke Fidler Team Watt?? Lasting Impressions
I be strokin'......
Posts: 1930 | From: state college, pa | Registered: Sep 1999
| IP: Logged |
posted
ideally from what i've been told and tried, 2 1000d's linked run best at 1.2 to 1.8ohms, or 1 amp at half that.6to.9 ohms. the new bmf1000d's are about 1.4db more power than the cfa's, and only draw about 120 amps. box impedance will affect it also. ------------------
[This message has been edited by Y2spl (edited 01-23-2001).]
Printer-friendly view of this topic