need help mean gene or percy...
09-25-01, 07:37 PM
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need help mean gene or percy...
i just got my Rockford Fosgate power 800.4 sub in today. tried installing it but just couldn't figure it out. i have one 12" RF HX2 dvc sub. please give advice on how to wire the amp. i bought this amp so i can run my whole system on(one sub and componenets.) any input would be appreciated.
mayur
mayur
09-26-01, 07:41 AM
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cdtech's and OZ tweeters.... should sound great!!!!
TX GS- i would still like to sell the system because its just too loud for me. but if no one is interested, i guess i'll just have to keep it.
mayur
TX GS- i would still like to sell the system because its just too loud for me. but if no one is interested, i guess i'll just have to keep it.
mayur
09-27-01, 02:28 AM
#6
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Another Question
Mayur - Is that a Punch or Power HX2? Need to know it's impedance before I suggest how to wire it. Also, I'm not familar with cdtech's so is that a 6.5" component set with 1" tweets? Figure we'll need to run the sub on the back 2 channels & use the other 2 for your front stage but need to know more about your stuff.
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09-27-01, 09:22 AM
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hx2
Not to further complicate matters, but is your hx2 the 2212 or the 2112? Both are Punch, but the 2112 has dual 2 ohm coils as opposed to the dual 4's on the 2212.
09-27-01, 06:00 PM
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Wiring Options
Sark - I must have an older RF catalog because I've never seen a HX2 model #2112. I think maybe RF changed their numbers because the Punch HX2 ( 4 ohm VC's ) is #2212 & the Power HX2 ( 2 ohm VC's ) is #3112. We both had the same question but different ways of asking it, I guess!
Mayur - U have several options but none R, IMO, the best. U can wire each of the voice coils to a rear channel of the 800.4 which will give ya roughly 100 wrms/VC or 200 wrms total to the sub. That's barely within RF's required power handling ( 150-500 wrms ) but if ya don't really jam them, then the extra power of wiring them in the next 2 methods won't be worth the trouble. U can wire the voice coils into a parallel load which turns the sub into a 2 ohm driver which is good ( RF's are 2 ohm stable ). The problem then becomes where to go from there. If ya run those 2 wires to a single channel ( I recommend one of the rears ) of the 800.4, U have a perfect 400 wrms going to the sub but then U have an unused channel. This will be a problem since U will need to use the amp's LP crossover card to send only low frequency signals to the rear channels ( both of them ). U want low ones to the sub but then U can't used the other LP'ed channel for anything other than maybe a midbass driver so U have wasted a channel. The last method will give ya the most power but MIGHT be too much for the sub itself. Wire both coils in parallel ( creating the above mentioned 2 ohm driver ) but then bridge the two rear channels ( as in a mono load ). This will become a 1 ohm impedance on the amp & if U keep the amp cool & supplied with adequate DC voltage, RF's WILL run there ( I've pulled 1/2 ohm loads on them before but that was utilizing an Acculvolt step-up voltage regulator ). However, I'm afraid that this creates TOO much power for the Punch HX2 - probably close to 700+ wrms!! It's possible to run it like this but U'd need to go easy on the volume levels or either the woofer will crap out or the amp will s/d on a thermal overload. We'd do better with a Power HX2 if U can exchange it? We could series the voice coils into a 4 ohm ( total ) load & then run it on a bridged amp yielding a 2 ohm load & the perfect 400 wrms power. Think it over & pick one. Happy hunting!!
Mayur - U have several options but none R, IMO, the best. U can wire each of the voice coils to a rear channel of the 800.4 which will give ya roughly 100 wrms/VC or 200 wrms total to the sub. That's barely within RF's required power handling ( 150-500 wrms ) but if ya don't really jam them, then the extra power of wiring them in the next 2 methods won't be worth the trouble. U can wire the voice coils into a parallel load which turns the sub into a 2 ohm driver which is good ( RF's are 2 ohm stable ). The problem then becomes where to go from there. If ya run those 2 wires to a single channel ( I recommend one of the rears ) of the 800.4, U have a perfect 400 wrms going to the sub but then U have an unused channel. This will be a problem since U will need to use the amp's LP crossover card to send only low frequency signals to the rear channels ( both of them ). U want low ones to the sub but then U can't used the other LP'ed channel for anything other than maybe a midbass driver so U have wasted a channel. The last method will give ya the most power but MIGHT be too much for the sub itself. Wire both coils in parallel ( creating the above mentioned 2 ohm driver ) but then bridge the two rear channels ( as in a mono load ). This will become a 1 ohm impedance on the amp & if U keep the amp cool & supplied with adequate DC voltage, RF's WILL run there ( I've pulled 1/2 ohm loads on them before but that was utilizing an Acculvolt step-up voltage regulator ). However, I'm afraid that this creates TOO much power for the Punch HX2 - probably close to 700+ wrms!! It's possible to run it like this but U'd need to go easy on the volume levels or either the woofer will crap out or the amp will s/d on a thermal overload. We'd do better with a Power HX2 if U can exchange it? We could series the voice coils into a 4 ohm ( total ) load & then run it on a bridged amp yielding a 2 ohm load & the perfect 400 wrms power. Think it over & pick one. Happy hunting!!
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