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Subwoofer Mount/Seal in Sealed Box
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<blockquote data-quote="djtech2k" data-source="post: 8467245" data-attributes="member: 598744"><p>So I have the polk component set installed and I setup the amp today. I will post pics.</p><p></p><p>I followed this article to do the right kind of tuning on the gains and such on the amp. <a href="http://knowledge.sonicelectronix.com/car-audio-and-video/car-amplifiers/how-to-adjust-amplifier-gains-using-a-digital-multi-meter/" target="_blank">How to Adjust Amplifier Gains Using a Digital Multi-Meter | Learning Center | Sonic Electronix</a></p><p></p><p>I could not get this to work or make sense. I followed it closely, but I could never get the voltage to read anything like what it said to expect, even with the gains all the way up. I am using the SQ 90.4, so I came up with about 38 volts. I could not figure out which switch setting to use on the multi-meter, but I tried them all. Playing the 1000hz loop, even with gain at 100%, I only got about 32 volts max. I even bought a new digital meter and no difference. So I put on some music and turned up the gain until I started to hear distortion, then backed it down a bit. I would say the gain is about 2/3 - 3/4 up. That's with all HU features set to 0 or flat. I just don't have a great deal of confidence that the gain setting is good.</p><p></p><p>The performance is ok, not what I expected in terms of volume. I really have to turn up the volume to like 28 out of 35 for it to get somewhat loud.</p><p></p><p>Also on the amp, the HPF frequency is a dial from like 20hz - 5khz. So its hard to know where the crossover is set. I have it where I would guess its about 200-400hz. On the amp, the dial is pointed the the bottom left of the letter "H" on the HPF button label.</p><p></p><p>The HU has a bunch of sound tuning features like EQ, sub, crossover, etc so I guess I will need to fool with those after I get the sub amp setup.</p><p></p><p>Any guidance on proper amp/gain tuning? I plan to follow the SQ instructions to tune the 1200 from here <a href="http://www.soundqubed.com/Amp-Setup-Instructions-_ep_69.html" target="_blank">Amp Setup Instructions</a>.</p><p></p><p>Here are some pics from the install thus far.</p><p></p><p><img src="http://i63.tinypic.com/293absw.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i68.tinypic.com/ra2alk.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i65.tinypic.com/sfcbcm.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="djtech2k, post: 8467245, member: 598744"] So I have the polk component set installed and I setup the amp today. I will post pics. I followed this article to do the right kind of tuning on the gains and such on the amp. [URL="http://knowledge.sonicelectronix.com/car-audio-and-video/car-amplifiers/how-to-adjust-amplifier-gains-using-a-digital-multi-meter/"]How to Adjust Amplifier Gains Using a Digital Multi-Meter | Learning Center | Sonic Electronix[/URL] I could not get this to work or make sense. I followed it closely, but I could never get the voltage to read anything like what it said to expect, even with the gains all the way up. I am using the SQ 90.4, so I came up with about 38 volts. I could not figure out which switch setting to use on the multi-meter, but I tried them all. Playing the 1000hz loop, even with gain at 100%, I only got about 32 volts max. I even bought a new digital meter and no difference. So I put on some music and turned up the gain until I started to hear distortion, then backed it down a bit. I would say the gain is about 2/3 - 3/4 up. That's with all HU features set to 0 or flat. I just don't have a great deal of confidence that the gain setting is good. The performance is ok, not what I expected in terms of volume. I really have to turn up the volume to like 28 out of 35 for it to get somewhat loud. Also on the amp, the HPF frequency is a dial from like 20hz - 5khz. So its hard to know where the crossover is set. I have it where I would guess its about 200-400hz. On the amp, the dial is pointed the the bottom left of the letter "H" on the HPF button label. The HU has a bunch of sound tuning features like EQ, sub, crossover, etc so I guess I will need to fool with those after I get the sub amp setup. Any guidance on proper amp/gain tuning? I plan to follow the SQ instructions to tune the 1200 from here [URL="http://www.soundqubed.com/Amp-Setup-Instructions-_ep_69.html"]Amp Setup Instructions[/URL]. Here are some pics from the install thus far. [IMG]http://i63.tinypic.com/293absw.jpg[/IMG] [IMG]http://i68.tinypic.com/ra2alk.jpg[/IMG] [IMG]http://i65.tinypic.com/sfcbcm.jpg[/IMG] [/QUOTE]
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