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Car Audio Help
Wiring, Electrical & Installation
Installing the SR6500 comp for pure SQ
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<blockquote data-quote="Bandieramonte" data-source="post: 6337723" data-attributes="member: 611675"><p>I'm about to install the SR6500 into a Jeep Liberty, and the Venezuelan car audio installers are very pathetic.. they only know how to throw in some low end subs and 5-way speakers without regards to how and where they install it. There are no SQ car audio shows whatsoever either. So I'm really needing a lot of help regarding quality SQ installation of this set of comps:</p><p></p><p>1) I'm still not sure what is on-axis tweeter placement. I understand that it means to place the tweeters on the A-Pillars facing to the center of the car. But where exactly is such center? See, I uploaded a picture (see attached) of the vehicle's interior, to help you help me find an on-axis placement. In the picture, I found two locations, labeled as 1 and 2. In 1, it would be on the car tweeters' stock location, firing towards the windshield, while in 2 it would be in a pod on the A-Pillars, firing to [**please indicate here where exactly should it point to**]. However, this location would not be above the dash level since there is an obstruction in the A-Pillars (signaled by the red arrow), unless I install it above such obstruction, but I think it would be too high then. Please help me find a good on-axis install for the tweeters in the picture, defining also where should the tweeters face.</p><p></p><p>2) Should the mids be on-axis too? I'm thinking on installing them in the Jeep's front door 6.5'' stock location, but it is under knee level, and it would not be firing towards the driver's seat, but to my lower legs.</p><p></p><p>3) I heard that the drivers should not be enclosed, since they work better on free air, is it true? If so, how can I do this? I'm thinking that if I install the tweeters in some pods on the A-Pillars, it would then be enclosed. How could they be on free air?</p><p></p><p>4) My head unit will be the Pioneer PRS800, having TA capabilities, as well as xovers and 32 band equalizer for the right and left sides separately (right?). I read that if someone has TA, then out of phase setup for tweeters would not be necessary. But I also read that if the tweeters are installed distantly from the mids, then out of phase is necessary. So I don't know if I should do this, or whether if out of phase setup for tweeters actually improves sound quality. If I should, then please link me to some web that explains this since I can't find any info about this.</p><p></p><p>5) I got this crossover suggestions for the SR6500:</p><p></p><p>Tweeter:</p><p></p><p>highpass= 4KHz@24db(most common) to 5KHz@12db</p><p></p><p>attenuation= -4 to -8db</p><p></p><p>phase= 0 to 180 degrees pending driver separation and use of time alignment</p><p></p><p>Midrange:</p><p></p><p>lowpass= 4KHz@24bd(most common) to 5KHz@24db</p><p></p><p>highpass= 40Hz to 63Hz (pending volume tastes) @24db</p><p></p><p>attenuation= 0</p><p></p><p>phase= 0</p><p></p><p>Now, would that be active of passive crossover? The amp I will use to power the SR6500 is the pa500.4, and I don't know whether if I should achieve that crossover setup with the amp's crossovers, the SR6500's crossover, or with the head unit crossover. Or should that be done with them altogether? (I don't think I will try to do the tweeter highpass at 5khz since it was said that it's harder)</p><p></p><p>6) I'm thinking on using JL Audio's high end wires for the installs, but still not sure of the specific model. Are their high end wires good enough for this SQ install?</p><p></p><p>I'm sorry if this post was long, but its longitude is a mere reflection of the amount of knowledge I still got to learn about this topic.</p><p></p><p>Thank you.</p></blockquote><p></p>
[QUOTE="Bandieramonte, post: 6337723, member: 611675"] I'm about to install the SR6500 into a Jeep Liberty, and the Venezuelan car audio installers are very pathetic.. they only know how to throw in some low end subs and 5-way speakers without regards to how and where they install it. There are no SQ car audio shows whatsoever either. So I'm really needing a lot of help regarding quality SQ installation of this set of comps: 1) I'm still not sure what is on-axis tweeter placement. I understand that it means to place the tweeters on the A-Pillars facing to the center of the car. But where exactly is such center? See, I uploaded a picture (see attached) of the vehicle's interior, to help you help me find an on-axis placement. In the picture, I found two locations, labeled as 1 and 2. In 1, it would be on the car tweeters' stock location, firing towards the windshield, while in 2 it would be in a pod on the A-Pillars, firing to [**please indicate here where exactly should it point to**]. However, this location would not be above the dash level since there is an obstruction in the A-Pillars (signaled by the red arrow), unless I install it above such obstruction, but I think it would be too high then. Please help me find a good on-axis install for the tweeters in the picture, defining also where should the tweeters face. 2) Should the mids be on-axis too? I'm thinking on installing them in the Jeep's front door 6.5'' stock location, but it is under knee level, and it would not be firing towards the driver's seat, but to my lower legs. 3) I heard that the drivers should not be enclosed, since they work better on free air, is it true? If so, how can I do this? I'm thinking that if I install the tweeters in some pods on the A-Pillars, it would then be enclosed. How could they be on free air? 4) My head unit will be the Pioneer PRS800, having TA capabilities, as well as xovers and 32 band equalizer for the right and left sides separately (right?). I read that if someone has TA, then out of phase setup for tweeters would not be necessary. But I also read that if the tweeters are installed distantly from the mids, then out of phase is necessary. So I don't know if I should do this, or whether if out of phase setup for tweeters actually improves sound quality. If I should, then please link me to some web that explains this since I can't find any info about this. 5) I got this crossover suggestions for the SR6500: Tweeter: highpass= 4KHz@24db(most common) to 5KHz@12db attenuation= -4 to -8db phase= 0 to 180 degrees pending driver separation and use of time alignment Midrange: lowpass= 4KHz@24bd(most common) to 5KHz@24db highpass= 40Hz to 63Hz (pending volume tastes) @24db attenuation= 0 phase= 0 Now, would that be active of passive crossover? The amp I will use to power the SR6500 is the pa500.4, and I don't know whether if I should achieve that crossover setup with the amp's crossovers, the SR6500's crossover, or with the head unit crossover. Or should that be done with them altogether? (I don't think I will try to do the tweeter highpass at 5khz since it was said that it's harder) 6) I'm thinking on using JL Audio's high end wires for the installs, but still not sure of the specific model. Are their high end wires good enough for this SQ install? I'm sorry if this post was long, but its longitude is a mere reflection of the amount of knowledge I still got to learn about this topic. Thank you. [/QUOTE]
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