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Wiring, Electrical & Installation
Optimal config for more bass with one sub-woofer?
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<blockquote data-quote="alan-31" data-source="post: 7918290" data-attributes="member: 623458"><p>hi guys</p><p></p><p>I have a 12" subwoofer in the back of the car that I use to get bass. Its powerful enough for me but I'm wondering if I'm making optimal use of the amp/sub-woofer combination. I feel the bass goes down a little bit at high volumes but its not a big issue. I just want to make sure I'm wiring this in the best way.</p><p></p><p>Equipment I have:</p><p></p><p>- <strong>Subwoofer</strong>: 1 12" DVC (dual voice coil) Subwoofer, with each coil of 4 Ohm. RMS 300W (its an entry level sub). I have this one: <a href="http://www.sonicelectronix.com/item_9357_Hifonics-HFi12D4.html" target="_blank">Hifonics HFi12D4 (HFi12-D4)12" Dual 4 ohm HFi Car Subwoofer</a> . User manual: <a href="http://maxxsonics.net/manuals/hifonics/pdfs/HFi%20Subwoofer%20Manual.pdf" target="_blank">http://maxxsonics.net/manuals/hifonics/pdfs/HFi%20Subwoofer%20Manual.pdf</a></p><p></p><p>- <strong>Amp</strong>: Two channel amp, Load impedance: 4 Ohm (2-8ohm allowed). Bridge connection: 4-8ohm allowed. Max power: 760 x 1 watts, or 250 x 2 watts. Continous power output: 125 watts x 2, 380 watts x 1. Pioneer GM-X962. Specs on this page: <a href="http://www.sonicelectronix.com/item_1334_Pioneer-GM-X962.html" target="_blank">Pioneer GM-X962 (gmx962) 2-Channel Car Amplifier Power Amp</a></p><p></p><p>- <strong>Bass pre-amp</strong>: Takes input from the Front right speaker and outputs it to the main amp. This is an awesome unit (MTX re-q) used for stock radios. It restores bass at higher volumes. I still have less bass at high volumes and that may be due to weak equipment or wiring configuration.</p><p></p><p>The <strong>connection diagram</strong> is: <a href="http://postimage.org/image/ee95tm0wb/" target="_blank">View image: amp wiring</a></p><p></p><p>So you can see, I take the right front speaker output, put that into the pre-amp and from there it splits and goes to the L and R of the amp inputs. This is so I can make sure of all the available power in the main amp.</p><p></p><p>Then the main amp has a L and R output for each of the coils in the sub-woofer. The coils are thus getting the same exact signal and bass is doubled. Sometimes there's audio differences between the L and R channels (stereo). That's why I used only one channel (right).</p><p></p><p>The subwoofer coil ohms are optimally matched to the amp recommendation (4 ohm).</p><p></p><p>Can I do anything else that would be more powerful? For example:</p><p></p><p>- Get a left channel instead of splitting the right one. Again I don't want to do that unless there will be more power output. The sound quality is fine.</p><p></p><p>- Connecting speakers/amp in a bridged configuration. Will that be more powerful? If so, why?</p><p></p><p>- Use just one coil of the sub-woofer? No, that would half the powerful output, I assume.</p><p></p><p>- Series/parallel the coils and do something else?</p><p></p><p>I'm thinking this is already the best setup. Is that right? I just need to use better wires. I'm currently using regular speaker wires for both channels of the sub-woofer and that may be causing power loss at higher volumes. I saw cheap 12 gauge wire at Lowes and I might buy that.</p><p></p><p>I've seen people saying 12 gauge is fine for sub-woofers.</p><p></p><p>Also a question: Is the amp more powerful or the sub-woofer?</p></blockquote><p></p>
[QUOTE="alan-31, post: 7918290, member: 623458"] hi guys I have a 12" subwoofer in the back of the car that I use to get bass. Its powerful enough for me but I'm wondering if I'm making optimal use of the amp/sub-woofer combination. I feel the bass goes down a little bit at high volumes but its not a big issue. I just want to make sure I'm wiring this in the best way. Equipment I have: - [B]Subwoofer[/B]: 1 12" DVC (dual voice coil) Subwoofer, with each coil of 4 Ohm. RMS 300W (its an entry level sub). I have this one: [URL="http://www.sonicelectronix.com/item_9357_Hifonics-HFi12D4.html"]Hifonics HFi12D4 (HFi12-D4)12" Dual 4 ohm HFi Car Subwoofer[/URL] . User manual: [URL="http://maxxsonics.net/manuals/hifonics/pdfs/HFi%20Subwoofer%20Manual.pdf"]http://maxxsonics.net/manuals/hifonics/pdfs/HFi%20Subwoofer%20Manual.pdf[/URL] - [B]Amp[/B]: Two channel amp, Load impedance: 4 Ohm (2-8ohm allowed). Bridge connection: 4-8ohm allowed. Max power: 760 x 1 watts, or 250 x 2 watts. Continous power output: 125 watts x 2, 380 watts x 1. Pioneer GM-X962. Specs on this page: [URL="http://www.sonicelectronix.com/item_1334_Pioneer-GM-X962.html"]Pioneer GM-X962 (gmx962) 2-Channel Car Amplifier Power Amp[/URL] - [B]Bass pre-amp[/B]: Takes input from the Front right speaker and outputs it to the main amp. This is an awesome unit (MTX re-q) used for stock radios. It restores bass at higher volumes. I still have less bass at high volumes and that may be due to weak equipment or wiring configuration. The [B]connection diagram[/B] is: [URL="http://postimage.org/image/ee95tm0wb/"]View image: amp wiring[/URL] So you can see, I take the right front speaker output, put that into the pre-amp and from there it splits and goes to the L and R of the amp inputs. This is so I can make sure of all the available power in the main amp. Then the main amp has a L and R output for each of the coils in the sub-woofer. The coils are thus getting the same exact signal and bass is doubled. Sometimes there's audio differences between the L and R channels (stereo). That's why I used only one channel (right). The subwoofer coil ohms are optimally matched to the amp recommendation (4 ohm). Can I do anything else that would be more powerful? For example: - Get a left channel instead of splitting the right one. Again I don't want to do that unless there will be more power output. The sound quality is fine. - Connecting speakers/amp in a bridged configuration. Will that be more powerful? If so, why? - Use just one coil of the sub-woofer? No, that would half the powerful output, I assume. - Series/parallel the coils and do something else? I'm thinking this is already the best setup. Is that right? I just need to use better wires. I'm currently using regular speaker wires for both channels of the sub-woofer and that may be causing power loss at higher volumes. I saw cheap 12 gauge wire at Lowes and I might buy that. I've seen people saying 12 gauge is fine for sub-woofers. Also a question: Is the amp more powerful or the sub-woofer? [/QUOTE]
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