pole plugging...

[HawaiianBassHed 10+ year member]

ok, so I went to a comp yesterday and one of my sets of sub/amps was going into protect did a 149 flat on the dash car closed TL @46hz 148.1 playing airforces the 1st run... anyway, so I isolated it down to which pair of amps was shutting off by free airing the subs and seeing which one stopped moving. then tried to trouble shoot it and couldn't really fix it. then I decided to put the subs back in inverted to gain the .2cubes or wutever they displace to see if it gets down better and low and behold one sub (the one that DOESN'T go into protect) was taped from when I bought the motor and I totally spazzed it until just now. *disclaimer, my setup is NOT a wall, I just couldn't lay the boxes down with the batts back there and I wanted everything behind the second row of seats (had the wife and kids come too) so I stood the boxes up, but they were designed and fit without the batts subs up ports back...

this is a pic of how I meant for the boxes to go, but I ended up buying these huge batts for $20/ea so I modified the install to integrate them into the setup.. they usually go the same was as this but side by...

ANYway, to the question, does having the pole plug limit excursion or do something that is effecting my amps to not go into protect? if so I'm gonna just tape the other one. and if it's not good I'm thinking I'll untape the taped one... any advice? wife doesn't want me doing another all day thing so I figured I'd ask here instead of take out the car and TL and go on a fricken all day sesh again lol thanks guys!

Tom

oh, setup is a pair of HD3 15"s d1.4, 4 crossfire xp1400ds strapped .7ohms per pair, batts are 4 Trojan L-16 6v batts seriesed then paralleled

for two 12v pairs of banks. voltage drop on amps is above 11v on burps and batts so drops aren't the cause imo of the amp hitting protect... I definitely need to do a better ground as I JUST finished this setup at 10am yesterday and to get to the comp on time I had to get gas and come home and get ready and leave in 2hrs time so I didn't do any testing, just fired it up and played it on the way home so I could have something to listen to... so besides the comp I didn't have any testing in until my free air testing this morning to see if I could get the one set of amps to stay outta protect //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif if I drop the boxes and get it stable I'm sure I can get a 150 out of it pretty easily... the 148.1 on music wasn't hard at all neither was the burp I didn't even know where it peaked I started at like 40hz and it would keep playing higher and I kept turning the knob higher til it did the 149, oh and trying to keep it outta protect so I rolled the volume back and forth I guess it wasn't that easy lol anyway, with testing on my TL I'll get her up to a 150 in a few weeks for the next comp //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

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[thorshammer1 10+ year member]

I'd just try without the tape. See if it fixes things.

 

[HawaiianBassHed 10+ year member]

I played with my settings. I had the maxxlink input sensitivity too high I think, and I turned the amp gains way down, matching them in strapped pairs at 44acv outputs with the maxxlink 65hz tone generator. not thinking to get it up over that I'd have to go clipped... so I matched them today at 78.3v per strapped pair and I think this is really what I should've done. the maxxlink tone generator is unclipped and it's direct driving the amp. any playing media needs to play thru the HU then into the maxxlink and then to the amps so it has more chances of getting clipped specially if I plan to play it up into the 150 zone on music so I realized I needed to get the amps up to that with the maxxlink tone generator since the amps not clipping yet I don't have to turn the other accessories up into hard clipping to get the higher voltages outta the amp.

at least I think that's all it is. I listened to it a little while ago with one still taped and one not and it got loud like when I meter'd the 149 and didn't have a single issue... I'll put it on my TL when I have time, I can't do it at home as its loud outside, it's loud on ear as the displacement and pressurizes the expedition well.

 

[PV Audio 5,000+ posts]

The pole vent is there to do two things: provide cooling and to relieve pressure under the dustcap. Mechanically, it can raise the Qts and lower the flux density, sometimes lowering the BL. That last one is likely the reason why many pure SPL woofers don't have pole vents while other woofers from the same company do. I don't see how having one or not can cause the amp to go into protect since it doesn't cause a huge excess current draw.

 

[theMessenjah44 10+ year member]

were you the one that bought one of the quad-coil DD's from a guy in illinois?