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2013 WRX SQ Build - Feedback/Suggestions Appreciated
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<blockquote data-quote="lyons238" data-source="post: 8503335" data-attributes="member: 664254"><p>I'm attempting to upgrade my system and make a SQ / SQL'ish car...but I have a few questions about design and product choice...</p><p></p><p>I will post pictures of my install currently later today...</p><p></p><p><strong>Current system</strong></p><p></p><p><strong><em>Processor:</em></strong></p><p></p><p>- Helix DSP Pro</p><p></p><p><strong>Front stage:</strong></p><p></p><p>- Pioneer AVX-4000NEX HU</p><p></p><p>- ID CTX65 (active)</p><p></p><p>- Sundown SAX 150.4</p><p></p><p><strong><em>Sub stage</em></strong></p><p></p><p>- Dual 4 fi Q (fully loaded)</p><p></p><p>- Box = 2.25 net cu ft tuned to 32hz (baltic birch)</p><p></p><p>- Sundown SCV-2000d</p><p></p><p><strong><em>Electrical (ROCK SOLID VOLTAGE!)</em></strong></p><p></p><p>- 250a DC Power alt</p><p></p><p>- Big 3 w/ 0g OFC</p><p></p><p>- All 0g OFC run to rear batt and sub amp / 4g to 4 channel</p><p></p><p>- XS Power D3400 batt up front</p><p></p><p>- XS Power XP950 in trunk</p><p></p><p><strong>Questions:</strong></p><p></p><p>1. Does wiring a sub down to 1 ohm diminish SQ, even when you have plenty of clean power?</p><p></p><p>2. I want to upgrade my front stage, would you recommend Hertz MLK 1650.3, Hertz HSK 65 XL, ID XS65, or?</p><p></p><p>3. The fi Q is very peaky and won't hit higher notes, would this be a good sub to use in a 6th order BP?</p><p></p><p>4. Do you have any design help for 6th order BP in a sedan? I want to blow through, but I don't necessarily want to cut my rear deck apart. Also, what would the chamber volumes have to be for the fi Q for instance?</p><p></p><p>5. Would a 6th order be good for a SQ/SQL build? Since my front stage isn't 3 way I was thinking a 6th order would help me get rid of the huge dip I have from 50-80hz with my current setup. Also upgrading my front stage will help the mids blend into the sub a little better than my current components.</p><p></p><p>6. If the fi Q will not suit my needs due to being too peaky (unfixible by 6th order), or if wiring down to 1 ohm isn't proper for a SQ build, or if it's just not good in a 6th order - would you recommend any SQ/SQL woofers? I honestly really like W7's (still) but that would cost me 2 grand to do that as I would need a sub and an amp.</p><p></p><p>7. Should I go for an IDMAXv4 12" subwoofer or something similar for a 60 / 40 - SQ / SQL application? Other options? Also D4 IDMAX for my full 2k amp on tap or D2 and have 1k on tap at a 2 ohm load. How much losses occur from the amplifier to the subwoofer? Say the amp is rated and delivers 2k watts at 1 ohm load, how much is my sub actually seeing? I suppose the answer to this decides whether or not I would go D2 or D4. Also I've heard some people say the IDMAX can take over 1k and some say it barely takes 1k...</p><p></p><p>Any help is greatly appreciated!</p></blockquote><p></p>
[QUOTE="lyons238, post: 8503335, member: 664254"] I'm attempting to upgrade my system and make a SQ / SQL'ish car...but I have a few questions about design and product choice... I will post pictures of my install currently later today... [B]Current system[/B] [B][I]Processor:[/I][/B] - Helix DSP Pro [B]Front stage:[/B] - Pioneer AVX-4000NEX HU - ID CTX65 (active) - Sundown SAX 150.4 [B][I]Sub stage[/I][/B] - Dual 4 fi Q (fully loaded) - Box = 2.25 net cu ft tuned to 32hz (baltic birch) - Sundown SCV-2000d [B][I]Electrical (ROCK SOLID VOLTAGE!)[/I][/B] - 250a DC Power alt - Big 3 w/ 0g OFC - All 0g OFC run to rear batt and sub amp / 4g to 4 channel - XS Power D3400 batt up front - XS Power XP950 in trunk [B]Questions:[/B] 1. Does wiring a sub down to 1 ohm diminish SQ, even when you have plenty of clean power? 2. I want to upgrade my front stage, would you recommend Hertz MLK 1650.3, Hertz HSK 65 XL, ID XS65, or? 3. The fi Q is very peaky and won't hit higher notes, would this be a good sub to use in a 6th order BP? 4. Do you have any design help for 6th order BP in a sedan? I want to blow through, but I don't necessarily want to cut my rear deck apart. Also, what would the chamber volumes have to be for the fi Q for instance? 5. Would a 6th order be good for a SQ/SQL build? Since my front stage isn't 3 way I was thinking a 6th order would help me get rid of the huge dip I have from 50-80hz with my current setup. Also upgrading my front stage will help the mids blend into the sub a little better than my current components. 6. If the fi Q will not suit my needs due to being too peaky (unfixible by 6th order), or if wiring down to 1 ohm isn't proper for a SQ build, or if it's just not good in a 6th order - would you recommend any SQ/SQL woofers? I honestly really like W7's (still) but that would cost me 2 grand to do that as I would need a sub and an amp. 7. Should I go for an IDMAXv4 12" subwoofer or something similar for a 60 / 40 - SQ / SQL application? Other options? Also D4 IDMAX for my full 2k amp on tap or D2 and have 1k on tap at a 2 ohm load. How much losses occur from the amplifier to the subwoofer? Say the amp is rated and delivers 2k watts at 1 ohm load, how much is my sub actually seeing? I suppose the answer to this decides whether or not I would go D2 or D4. Also I've heard some people say the IDMAX can take over 1k and some say it barely takes 1k... Any help is greatly appreciated! [/QUOTE]
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