500W+ amps for driving your subwoofer

[richie00boy]

Yes I am on ESP.

My point was that you could make the boxes for these subs a lot smaller, provided you have sufficient amp power and voicecoil capacity. All you need then is a Linkwitz Transform.

 

[MJL21193]

I have two MJ-18 (Mach-5 Audio) in a sealed 60 litre box driven by my 500+ watt version of Rod Elliots sub amp( project68) eq'ed by the Linkwitz Transform. I have never heard better bass. At 60 litres the rivers pretty much fill the enclosure. Ths simple circuit maks it work.

 

[MJL21193]

The drivers, not the rivers

 

[Cloth Ears]

Old man driver, that old man driver, he just keeps rolling...

 

[Cloth Ears]

Picked up an EP2500 off eBay, so now I have to clear the decks and start building (get those pesky 2-way TL's finished first).

 

[MJL21193]

Going to be plenty-o-power for sure! Goodluck.

 

[BassAwdyO]

to the original thread question... The Re value is DC resistance and your nominal impedence is probably 8 ohms... I dont think you will have a problem running an amp that puts out it's max output into 4 ohms nominal. These are subs by golly and a little clipping isnt going to hurt them like tweeters. Besides.. if as you say the subs are rated 300watts you can get a 500watt amp and have headroom left over.

 

[Cloth Ears]

Besides.. if as you say the subs are rated 300watts you can get a 500watt amp and have headroom left over.

Rating that Nick gave for these drivers were:
Pe (nom): 300 Watts
Pe (max): 500 Watts
Pe (transient): 1000 Watts

I don't think I'll be running the amp full-on (at present, the amps that I've got all run about -6dB), so I don't think I'll be getting any problems in running these drivers with it. But, I think they'll probably be able to handle just about anything I throw at them anyway...

P.S. the amp I got says these figures in its manual for bridged mono:
20-20kHz at 8ohms, 0.1%THD: 1300W
1kHz at 8ohms, 0.1%THD: 1500W
1kHz at 4ohms, 1%THD: 2400W
Voltage gain: 34dB
Power consumption: 5A (for the 240V model).