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Subwoofer configuration help needed.
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<blockquote data-quote="chefws" data-source="post: 2926503" data-attributes="member: 576147"><p>Originally posted in the 'Speaker' forum, so reposted here.</p><p></p><p>Hey to all you car audiophiles. I have patched together a system that pretty much fits my needs, but isn’t of the greatest caliber. I have limited resources (money), so over the past year and a half I’ve been buying cheap stuff here and there to add to the system.</p><p></p><p>Presently I have a JVC head unit, and RF 300w amp for my 4 6x9’s.</p><p></p><p>I have the following subs:</p><p></p><p>2) 10” RF 8ohm 200w rms/400w max</p><p></p><p>2) 10” Sony 4 ohm 500w rms/1000w max</p><p></p><p>2) 12” Sony 4 ohm 550w rms/1100 w max</p><p></p><p>These are running off of a 1000 w amp with the following specs:</p><p></p><p>4 channels</p><p></p><p>RMS @ 4 Ohms 4 x 125W</p><p></p><p>MAX @ 4 Ohms 4 x 250W</p><p></p><p>At 4 Ohms Bridged 2 x 500W</p><p></p><p>RMS @ 2 Ohms 4 x 200W</p><p></p><p>Min Speaker Impedance 2 Ohm</p><p></p><p>I presently have the 2) 10” RF 8ohm parallel presenting a 4 ohm load on one channel, the 2) 10” Sony 4ohm presenting a 2ohm load on one channel, and the 2) 12” Sony 4 ohm presenting a 4 ohm load on 2 channels.</p><p></p><p>I bid on a pair of 10” RF DVC 2 Ohm speakers, and didn’t think I would win, but I did. I got 2 Rockford Fosgate Punch Stage 3 P310D2 10" 800W Subwoofer 2 ohms for $40 each. The power handling is 400w rms/800w max. If I use only the 10” RF DVC, I can wire each one to present a 4 ohm load, and bridge it on the amp. That is easy. What I am trying to do is get all the speakers to play off of the amp. (Yes, this is stupid, and I acknowledge that)</p><p></p><p>I won’t be able to use the 2) 200w rms speakers for this configuration.</p><p></p><p>I am thinking that if I run 2 each of the Sony 10” subs parallel to make an 8 ohm load, and configure the 2 DVC parallel to present and 8 ohm load, then connect the 2 configurations in series, I will have a 4 ohm load to present it to 2 channels bridged. I am thinking this will give me a 4 ohm load and an output of 500 watts.</p><p></p><p>Does this sound right?</p><p></p><p>Any help would be appreciated.</p><p></p><p>Thank you.</p><p></p><p>Note: I posted this in the speaker forum, and helotaxi replied:</p><p></p><p></p><p>I appreciate his reply, and I agree that in a normal vehicle the 'mass o subs' would most definitely sound like crap. I plan on using the 2 10" 200w RF subs as my everyday listening subs in between my seats. I have a full size cargo van, and have the others in the back, facing the both sides the exterior of the vehicle so the van sides 'bumps', and it is controlled with a toggle switch to turn on when needed.</p><p></p><p>I have built a ported box to RF's spec's, as helotaxi suggested, presently tuned to 40 hz, and they sound good, but not nearly enough to fill the massive void of the van. My 6x9's are so loud, I can't hear any of the bass in the rear of the van, just the bass 2 mentioned directly above. (I have 4ea 6x9's in the cab of the van pushing about 150w per pair offof the 300w RF amp)</p><p></p><p>Again, any help with the verification of my wiring scheme would be most appreciated, as DVC's are new to me.</p></blockquote><p></p>
[QUOTE="chefws, post: 2926503, member: 576147"] Originally posted in the 'Speaker' forum, so reposted here. Hey to all you car audiophiles. I have patched together a system that pretty much fits my needs, but isn’t of the greatest caliber. I have limited resources (money), so over the past year and a half I’ve been buying cheap stuff here and there to add to the system. Presently I have a JVC head unit, and RF 300w amp for my 4 6x9’s. I have the following subs: 2) 10” RF 8ohm 200w rms/400w max 2) 10” Sony 4 ohm 500w rms/1000w max 2) 12” Sony 4 ohm 550w rms/1100 w max These are running off of a 1000 w amp with the following specs: 4 channels RMS @ 4 Ohms 4 x 125W MAX @ 4 Ohms 4 x 250W At 4 Ohms Bridged 2 x 500W RMS @ 2 Ohms 4 x 200W Min Speaker Impedance 2 Ohm I presently have the 2) 10” RF 8ohm parallel presenting a 4 ohm load on one channel, the 2) 10” Sony 4ohm presenting a 2ohm load on one channel, and the 2) 12” Sony 4 ohm presenting a 4 ohm load on 2 channels. I bid on a pair of 10” RF DVC 2 Ohm speakers, and didn’t think I would win, but I did. I got 2 Rockford Fosgate Punch Stage 3 P310D2 10" 800W Subwoofer 2 ohms for $40 each. The power handling is 400w rms/800w max. If I use only the 10” RF DVC, I can wire each one to present a 4 ohm load, and bridge it on the amp. That is easy. What I am trying to do is get all the speakers to play off of the amp. (Yes, this is stupid, and I acknowledge that) I won’t be able to use the 2) 200w rms speakers for this configuration. I am thinking that if I run 2 each of the Sony 10” subs parallel to make an 8 ohm load, and configure the 2 DVC parallel to present and 8 ohm load, then connect the 2 configurations in series, I will have a 4 ohm load to present it to 2 channels bridged. I am thinking this will give me a 4 ohm load and an output of 500 watts. Does this sound right? Any help would be appreciated. Thank you. Note: I posted this in the speaker forum, and helotaxi replied: I appreciate his reply, and I agree that in a normal vehicle the 'mass o subs' would most definitely sound like crap. I plan on using the 2 10" 200w RF subs as my everyday listening subs in between my seats. I have a full size cargo van, and have the others in the back, facing the both sides the exterior of the vehicle so the van sides 'bumps', and it is controlled with a toggle switch to turn on when needed. I have built a ported box to RF's spec's, as helotaxi suggested, presently tuned to 40 hz, and they sound good, but not nearly enough to fill the massive void of the van. My 6x9's are so loud, I can't hear any of the bass in the rear of the van, just the bass 2 mentioned directly above. (I have 4ea 6x9's in the cab of the van pushing about 150w per pair offof the 300w RF amp) Again, any help with the verification of my wiring scheme would be most appreciated, as DVC's are new to me. [/QUOTE]
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