RF Punch HX2 12"

[94civic]

Are these subs good? Will they out do the 12w3's or w6's. Also what kind of box is recommended for this sub. The specs say .9ft^3-4ft^3 and thats a major difference between the two sowhat do you recommend. Thanks for any help.

[94civic]

oh yeah they are going to run off a jbl 1200.1

[94civic]

will they still sound good if i ran them off a 600.1

[GSteg]

they will out-perform the JL 12W3 and the 12W6. the JBL 1200.1 is an overkill for the sub as it will put out ~1400watts at 2ohm. if you plan to go with the JBL 1200.1, then you must wire it in series to present a 4ohm load. but even with the 4ohm load, the amp will produce ~700watts. This sub is rated at 500watt RMS. The JBL 600.1 would be perfect (well kinda). at 2ohm, it produces ~700 watt. again, you must wire it in series to present a 4ohm load. JBL rates this amp 300x1@4ohm. being underrated, it will put out about 400 watts so it should be sufficient for the Rockford to play.

Rockford Fosgate recommends 0.8-4.0 cu. ft for a sealed application and 1.75-4.0 for ported application. the more power you have, the smaller the box should be. the less power you have, the larger the box should be. if you're going with a sealed box, i recommend ~2.0cu. ft. if you're going with a ported box, i say about 3.0cu ft. should do.

oh yea....whatever you do, don't use the bass boost. when near the recommended power, you won't need it as it will deliever large amount of distortion and clipping power. hope this helps

[94civic]

how about 2 he2's with the bp1200.1. will these out do 2 12w3's with the same amp.

[94civic]

also how about 2 he2's with the bp600.1

[GSteg]

the JBL 1200.1 will be too much for the HE2. you're better off with the 600.1. if you keep your power supply at 14.4 volts, this amp will make about 700 watts at either 2ohm or 1ohm. hook them up and each will receive about 350 watt. just 50 watts under the recommended RMS. it should sound great.

[94civic]

Thanks GSteg.

[crxlvr]

my friend has the power HX2 and has an RF 1000a2 powering them, the subs handle alot more power then what the specs say. RF under rates their sub power.

[Devedander]

I have a pair of the HE2 12s running off an RF 700s at 2 ohm. I am only putting about 350 watts to each speaker which is just under RMS and they are in a sealed box with I believe 1 cubic foot per speaker. They get very loud and sound great both loud and quiet.

[GSteg]

Originally posted by crxlvr
my friend has the power HX2 and has an RF 1000a2 powering them, the subs handle alot more power then what the specs say. RF under rates their sub power.

yea. RF does underrate their products a lot, but the RMS rating is there for a reason. my lightning audio 10" i bought for $30 at best buy is rated at 100 watt RMS, but i'm sending a little over 150 watts to it with the gains halfway. 5 months and it's still surviving. RMS specs are rated by how much power continuously the driver can handle for a long period of time. more power transfers more heat which will reduce the playing time. any sub can handle more power than they are rated at. it depends on the temperature. if a sub is rated at 500watt RMS, and the temperature around it is ~40 degrees, then it should handle more power. if the temperature is ~100 degrees, then it is a different story. i have my amp sending more power to the sub because where i live, it's freezing cold so i took advantage

that's why some people turn on their air conditioner or put icebags over their subs at competition to make the air more dense and the voice coil colder. the colder it is, the more power it can handle. for instance, the Digital Design 9515 is rated at 1200watt RMS. Nathan...(forgot last name but he has the record for the loudest single sub) is sending 4400watts to it. it will handle the power for a short amount of time until the heat builds up in the coil. almost every competitor will pour more joice onto their subs because it's only gonna be used for about a second or so. When kyle whitherspoon and nathan competed in the dB drag to see who could hit 170dB+ the longest, kyle smoked his subs in less than 10 seconds because of the heat build up. while that, nathan's sub didn't show a sign of smoke until 1 minute and 30 seconds later. so whats the moral of today's lesson?

1. RMS rating is there for a reason
2. denser air (or colder air)=more SPL
3. 170+dB will generate a lot of heat