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Box for Shiva's?
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<blockquote data-quote="zane" data-source="post: 141546" data-attributes="member: 540617"><p>I am running the same Amp/Sub combo in my car right now.</p><p></p><p>Honestly, I would reccomend a different amp if money allows.</p><p></p><p>I have found that the 1200.1 has some major issues with its built in crossover. Namely, that it can not be user defeated. The crossover itself is attrocious, very poor in design, and very questionable about its crossover cut-off points.</p><p></p><p>I have also found that the RCA terminal jacks tend to come loose very easily, and that the amplifier does have a tendancy to allow a bit of noise into the system. Namely- a nasty turn off thump.</p><p></p><p>Other than this- I have no complaints. The Power output is there, and the amp is quite versatile in most other areas. The circuitry appears well layed out and put together (yes josh, I know you have a different opinion about this! //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif ), and all the internals are solid.</p><p></p><p>Personally, I have not heard or had any real issues with this amp up until one found its way into my own car. The others I have installed or listened to in friends systems, are still doing quite well, and do not share all of the problems that I have described.</p><p></p><p>The crossover, I have always felt is severely lacking. However, with a little EQ work, most of that can be taken care of.</p><p></p><p>1.25ft^3 is typically the magic number for a sealed enclosure for the Shiva as mentioned.</p><p></p><p>Personally, in my own install, I am running them in dual 1ft^3 enclosures. After going through 4 different enclosures, 2.0ft^3 , 1.75ft^3, 1.25ft^3, and 1.0ft^3; I can not imagine them in anything other than the current 1ft^3 design. Granted, A few will strongly disagree about this box size, however, my Shivas respond much better in this size enclosure than any of the previously mentioned ones.</p><p></p><p>I have concluded, after re-aranging every element of my interior about 900 times, that the smaller enclosure size is a result of my cars natural "transfer function from hell." //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif</p><p></p><p>Bottom line, It may take a little playing to find the right box size for your car.</p><p></p><p>I would use the 1.25ft^3 as a first option, as it has worked well for quite a few people. Take it from there, and adust the size if necessary.</p><p></p><p>The JBL 1200.1, is not an overly horrible amp, but expect a few quirks. The saying about getting what you pay for holds true 9 out of 10 times...</p><p></p><p>If you do not have your amp yet, it would be IMO wise to noodle arround at <a href="http://www.nexxon.com" target="_blank">http://www.nexxon.com</a> and have a look at some other amplifier choices. I know that Ample Audio and Autotek have a few models that would be worth a look into among a few others.</p><p></p><p>take it easy,</p><p></p><p>-zane</p></blockquote><p></p>
[QUOTE="zane, post: 141546, member: 540617"] I am running the same Amp/Sub combo in my car right now. Honestly, I would reccomend a different amp if money allows. I have found that the 1200.1 has some major issues with its built in crossover. Namely, that it can not be user defeated. The crossover itself is attrocious, very poor in design, and very questionable about its crossover cut-off points. I have also found that the RCA terminal jacks tend to come loose very easily, and that the amplifier does have a tendancy to allow a bit of noise into the system. Namely- a nasty turn off thump. Other than this- I have no complaints. The Power output is there, and the amp is quite versatile in most other areas. The circuitry appears well layed out and put together (yes josh, I know you have a different opinion about this! [IMG]//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif[/IMG] ), and all the internals are solid. Personally, I have not heard or had any real issues with this amp up until one found its way into my own car. The others I have installed or listened to in friends systems, are still doing quite well, and do not share all of the problems that I have described. The crossover, I have always felt is severely lacking. However, with a little EQ work, most of that can be taken care of. 1.25ft^3 is typically the magic number for a sealed enclosure for the Shiva as mentioned. Personally, in my own install, I am running them in dual 1ft^3 enclosures. After going through 4 different enclosures, 2.0ft^3 , 1.75ft^3, 1.25ft^3, and 1.0ft^3; I can not imagine them in anything other than the current 1ft^3 design. Granted, A few will strongly disagree about this box size, however, my Shivas respond much better in this size enclosure than any of the previously mentioned ones. I have concluded, after re-aranging every element of my interior about 900 times, that the smaller enclosure size is a result of my cars natural "transfer function from hell." [IMG]//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif[/IMG] Bottom line, It may take a little playing to find the right box size for your car. I would use the 1.25ft^3 as a first option, as it has worked well for quite a few people. Take it from there, and adust the size if necessary. The JBL 1200.1, is not an overly horrible amp, but expect a few quirks. The saying about getting what you pay for holds true 9 out of 10 times... If you do not have your amp yet, it would be IMO wise to noodle arround at [URL="http://www.nexxon.com"]http://www.nexxon.com[/URL] and have a look at some other amplifier choices. I know that Ample Audio and Autotek have a few models that would be worth a look into among a few others. take it easy, -zane [/QUOTE]
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