j-roadtatts

For Starters, Happy Fathers Day!!! The seats look beautiful and complete the interior nicely!! What brand of seats did you guys get? How do you like them? You will enjoy tuning the different speakers to work in concert and will learn ALOT along the way.

You will be fine grounding both amps to one point without a distributing block. As BigJon stated a second battery is really the only way to overcome this.

What size battery or batterys do you have installed? Have you installed the big3?

Are you saying that the alternator shuts off under 550-600 RPMs? Do you know what the alternator rating is suppose to be at idle?

The Tattoo looks clean jellybean. You should of done a drop shadow or built up the bottom edge's, otherwise, theres always next time. Is that your first tattoo Mark? BTW, We are going to have to cut you off from the dounuts at the office.LOL.

Once I pull them apart to inspect I will know further. I am waiting on the company to email back before touching the burnt one though. I may pull the other one apart sooner, we will see. I am at work right now.

I installed everything and then tuned with the gain at around 1/4- 3/8. After I was cofortable with my settings I turned it up a little every few days until I reached about 5/8, then they started to overpower my highs so I turned it down a little.

The gain is right over half, like 9/16. NO BOOST OR EQ. The cone looked very controlled over the last month as I have been keeping a close eye on the one I could see. Everything honestly sounded great and was set very carefully before turning the gains up the last little bit. I am starting to lean torwards the grill got bent in and then I listened with alot of excursion and BAM. To think back, It all started while I was listening to Six Feet Under, Demoing for a drummer friend. If you are unfamiliar with Six Feet Under, They are VERY drum heavy. The speaker still plays at low volumes and only cuts the amp off when the coil reaches the bad spot.

One other thing that could of caused this would be the suround on the speaker hitting the grill and holding the coil in place and thus burning it. I noticed that the surrounds had grill lines on them and that the driver with the burnt coil had a big dent in the grill. The coil only feels burnt in the one spot on the outward stroke right about where the cone would of been hitting the grill. I sent an email to the company I bought the drivers from asking about thier warranty policy. They have one more in stock SO if nothing else I will buy that one after testing that the other driver is still good. The good new is motor bolts on these drivers are on the outside SO after I hear back from them I will probably pull both drivers apart and take pictures for you guys to look at. AND change the grill set up.

Very Badd Sad. IT appears that I have cooked one voice coil. I Can only guess that its from to much power, But think that a clipped sig could of done the job also. I pulled the two drivers out and right away could hear scratching in one of them. I hooked the DMM to each one. The first one read 3.6-3.8 at rest and all over the place when I held the cone down or up. The second one (the scratchy one ) read 1.6 at rest and when I went to move the cone it went to O.L. When I try to move the cone up it gets stuck real easy. NOW I am stuck contemplating wheither to try and find a single driver and replace the blow one OR Find some drivers that will fit in my doors and can handle a little more abuse. I know I am hard on things, thats why I try to over build things. My friends call me Doh-Zor if that explains anything. They will say the drivers where NOT Doh-zor approved. I fell like a jack-ass right now but need to learn SO please be gentle on me. I plan on contacting the company I bought them from and see what the warrenty covers. IDK IF the one driver could of had a defect but don't know. I guess thats the first place to start. Another question: Is there something I can do to my door/enclosure that will help with power handling and cone control? Maybe CCF on the back wall or something?

Would change be good or bad? I ASSUME i can find what these should read in the specs of the drivers?

I will check resistance on the speaker wire runs and pull out the drivers and do ohms readings on them too. I will admit I have overheated the amp a couple of times lately due to long road trips with bags packed in the trunk, up against the amps. I try not to listen very loud with the trunk full, but the amp is going to overheat after being on with no air flow after 8-10 hours anyways. I will ALSO amit that I could of damaged something in the drivers or amp when I was setting everthing up due to the fact I am a Novice. IDK. I know I should change my amp mounts for starters also, I am thinking of mounting the amps at an angle like so // OR I can mount the MRP-F600 under the drivers seat. I am starting to lean towards under the drivers seat just to get the poor amp mounted flat and out of the sealed trunk. Thank you Alton and Impious for confirming that the impedance rise should NOT be a problem. I will report my findings from the resistence/ohms tests.

I have been using this amp for 2 years, But only started to use it on these drivers a month or so ago. The VERY first day I hooked this amp up to the Aura's and started doing xover sweeps I could put the amp in to protect pretty much instantly. I have tryed narrowing down what frequencys the drivers are playing as far as slopes and xover points go, BUT don't want to lose anymore. I know the drivers are cabable of more power, I just don't have it to give them. I am looking at a few amplifiers that produce 500 watts @ 4ohm's x2 stereo, So I ASSUME that one of these amps would be capable of producing 250 watts at 8ohms? I am bandpassing the Aura's @ 50hz and 400hz, both points with a 12db slope. If you are familliar with the Aura's or looked at the impedance graph in the link above, You will see the impedance raises to 8 ohms at 50hz and 400hz, with a 4ohm low inbetween. So what do you guys think is the best solution to my problem?

OH how depressing it is. Now the amp will shut off as soon as I turn the volume up past 24, even if I just turned it on. SO DEPRESSING. Since no one else has any guess's or ideas I will give mine. I am pretty sure my problem is the impedance rise of the drivers. Richard (SQ MGB) mentioned in my build log to have an Impedance compensation circuit/network built to solve the problem. I have looked up and attemped to study the Impedance compensator, but am NOT familliar with its attributes in my sitution? I don't know if there is any adverse effects to adding these to my signal?????? SO My questions for today: Is an Impedance compensator the awnser to my problem? What adverse affects does an impedance compensator have on the signal? Is a bigger amplifier still the smartest/best solution? Thanks in advance for the input.

Thats a Beautiful SubWoofer you got there!!!

I do agree that being a COP would be a hard job. Definetly would take a certain type of person.

I seen that. Theres some power trippin cops out there for sure.

Atleast they didn't ask to go to Lady GAG me, THANK GOD!!! I would rather see her just to see what nutty thing she will do. TRUE, TRUE. But I dought she could top Gwar.

the amp/battery rack is lookin good. What are you going to wrap it in, or are you guys just gonna paint it? As far as the not to many people commenting, its summertime SO NOT as many people inside on the internet.

Atleast they didn't ask to go to Lady GAG me, THANK GOD!!!

So my midbass amp shuts off after 15-20 minutes of hard playing. I am pretty sure I am asking the amp to do more than it is capable of, BUT also know my mounting location is NOT ideal. SO heres the details. The amp is a Alpine MRP-F600, capable of 300 watts RMS x 2 @ 4 ohms. I have the amp mounted on the back of the box, with the vents running side to side, in a SEALED trunk. The midbass drivers are Aura NS10-513-4A, Aurasound NS10-513-4A 10" Subwoofer NLA from Madisound The Auras are rated @ 200 watt RMS and 800 peak. I have the Aura's crossed @ HPF 50hz 12db slope, LPF 400hz 12db slope. The Aura' are mounted IB in the front doors. There is TWO other amplifiers in the car that never shut off. Pictures are worth a thousand words So heres the driver mount. And heres the amp. (left one) I know the obvious is that the amp is mounted in the worst possible way for cooling. The next obvious is that the drivers only call for 200 watts RMS. THE BIGGEST PROBLEM, I think? The Aura's are rated 4 ohm drivers BUT HAVE a WICKED Impedance raise down low. They have an 8 ohm load @50hz, which is where I have them crossed. I think the Aura's are under rated Because I ASSUME that they are rated at the 200 watts RMS with a full range signal to them. I think the Aura's will handle 400 watts RMS the way I have them installed/crossed. Edit: I think I need an amp capable of 400 watts min. @4 ohms, because alot of the drivers imp. load is closer to 8ohms. I have had this amp mounted like this for almost 2 years, But not running these drivers. The amp had NEVER shut off with the previous drivers load. I know I am feeding the amps enough power with a 250 amp DC alt and dual XS batterys, so thats not the problem. Now for the things I CAN'T/WON'T compromise. amp/driver locations crossover points SO my question is DO YOU GUYS THINK I NEED A BIGGER AMP????? I think I am slowly going to kill this one if I don't do something????? Is there SOMETHING OBVIOUS that I am NOT seeing?????

Iron Maiden was good. The first half of the show they played new songs SO I only knew a couple, But the second half was EPIC when They Broke out with a bunch of oldies!!! Next concert...............................................................................Rihanna and Ke$ha. I am taking my daughters. SO DON'T LAUGH. Although I might go see Garth Brooks while I am in Vegas next week?

I am no expert, but will give my thoughts on the Imprint. I am using the 9886 with the H100 prossesor. I only used the imprint once and DID NOT use its settings, but did enjoy the RTA response gragh. The pros: gives you a RTA response gragh to look at so you can see what "YOUR" settings and equipment are doing. Definetly cleaned up the signal enough you could raise your gains if you are to lazy to tune it yourself. Cons: PITA to get absolute silence in the test enviroment. No personalized taste to the sound and you can't adjust once ON. Takes away ALL the good adjustment features on the HU when "imprint" is ON. Honestly the settings the imprint gave me were NO BETTER than a pre set EQ setting. I only spent 30 bucks on the actual imprint so NO loss since I enjoy checking the RTA gragh. I will be running it again hear soon on my new set up to see what the RTA gragh say this time.

I bet you guys are HAPPY to see the interior coming together!! The carpet looks SWEET!!

Iron Maiden Tonight!!! I have to work until five and then........ITS ON!!!!!! Then I'm Driving to Las Vegas Tomarrow.