audio audio audio

[kcourtad]

so far in my life every car ive ever owned has had some kind of audio done to it... and for my nissan versa my dream and some what starting to come true... i picked up a 15inch sub with box and amp for 380.00 used and i still have my two kicker comps that are 10inch... and i got 4 mtx audios in the doors... so what am i going to do this summer... im shooting for 150dbs at the audio show this fall... i got one pic now of the sub in my car and i`ll post more as my project takes off...

yea its in my back seat... im now a two seater car...

[KimberKenobi]

holy hell... where will you put the baby seat? I hope that sucker is removable...rofl

[kcourtad]

once its all built there will be 3 subs in the trunk with a kill switch running to the amps... there will be no trunk space when im done with this project...

[DejaWiz]

I see a Memphis sub there... what kind of amp did you get with it for $380?

[my_new_v]

Wooooo nice. Finally got a Memphis eh :P

Is it a regular M3 or M3 Mojo?

[Johniboi]

damn big as s*** lol. Im wondering, why not put the back seat down? I know on the hatchbacks the back seats can fold down, not sure bout sedans though?

[kcourtad]

I see a Memphis sub there... what kind of amp did you get with it for $380?

infinaty (sp) (12 hr day at work cant spell all that well right now) bass booster

Wooooo nice. Finally got a Memphis eh :P

Is it a regular M3 or M3 Mojo?

i think its just a M3 not really sure havnt took it out of its box yet...

damn big as s*** lol. Im wondering, why not put the back seat down? I know on the hatchbacks the back seats can fold down, not sure bout sedans though?

yea they fold down but the box wont fit all that well it... the box was made for a ford ranger ext. cab...

[ds08versa]

ok good luck on the 150db. what amps do you have power cable, caps, dynomat, what type of box are you going to use and what frequency are you tuning it to? do you have a back ground in car audio. well let us know what you hit

[kcourtad]

i hit 100 dbs with just the way it is right now at work... but im rebuilding the box dyno matting the whole car... putting all new wiring in it for the amp and batts... and amping the door speakers and replacing the head unit... and there is some odds in and ends that i gotta work out to get it all there... but i`ll probley be by this fall when i get er done

[my_new_v]

Hey bro, did you ever find out what kinda Memphis sub that was?

[DejaWiz]

Hey bro, did you ever find out what kinda Memphis sub that was?

Judging by the width of the surround, it looks to be a Mojo to me.

[Ever Victorious]

holy hell... where will you put the baby seat? I hope that sucker is removable...rofl

It's obvious that he never intends to put his child in this car. I mean, even when he switches all his subs to the trunk and has "no room" left, that means he doesn't want to carry a stroller... or a diaper bag... or anything in the car.

And 150db? that's for rupturing the kid's eardrums if he/she gets too close to the car.

Seriously, kcourtad... enthusiasm is nice, but practicality is going to come up and bite you in the butt hard here in just a few months. I'm not saying you have to go without a sub, but jesus... do you REALLY need more than a single 12" sub in the trunk? Especially with the fact that you can't run the stereo at loud volumes with the kid in the car (unless you REALLY want to make them go deaf before preschool)?

[my_new_v]

Judging by the width of the surround, it looks to be a Mojo to me.

Thats what I thought but the 15' M3 are about the same size, just smaller magnets.

[VersaMG08]

That's a pretty hefty sub you have in the backseat. Your system will pump good, but I believe that it's a bit overkill. Since you're going to a show, then it is worth it. The system I'm going for in my ride will be on par, nothing big or anything like that. It may hit 100db, I don't know yet until it's running in my car.

[kcourtad]

well i didnt build a new box yet... but i did get it to fit in my trunk... so thats a PLUS i got my back seats back... and it is a M3 Mojo i took it out of the box to see what it was... and about the kid... she told me she cheated on me when we was together and that she doesnt know if the baby is mine or not... there was a month we went without getting dirty...( try and keep it clean) and when we had a the utrasound done... it was in the month that we didnt get dirty... so im just playing it out by ear now...

[my_new_v]

Becareful with that Mojo bro, if you dont really bump it, you can damage the voice coils. Thats a straight competition sub so they built it to hit hard only. One of my most trusted friends told me that cause he works at a shop that sells Memphis. But from what it seems like your underpowering it which I dunno if its good with the Mojo's but if its lasted you this long then it looks like you'll be alright.

And dude that really sucks about the baby thing. I hope everything works out for you man, I feel for you.

[Jemdawg]

Underpowering isn't harmful at all, in fact it will only make your equipment last longer. It is a fallacy that you will blow speakers by starving them for power.

[Jemdawg]

Oh, and, by the way, I dearly hope you have all intentions of bringing your car to SPL competitions, because 15" subwoofers will only haul out pressure and little tone. If you want SQ, a nice heavy 10" in a sealed box will give you plenty of punch, tone, and low frequencies. Anything beyond 12" is overkill.

[bikeman]

Underpowering isn't harmful at all, in fact it will only make your equipment last longer. It is a fallacy that you will blow speakers by starving them for power.

Not a fallacy at all. It is a fallacy that we can blow a subwoof by underpowering it. You can cook a tweet under the right circumstances with insufficient power.

David

[Jemdawg]

I believe you are wrong, sir. Please support me with evidence of this.

[bikeman]

I believe you are wrong, sir. Please support me with evidence of this.

http://en.wikipedia.org/wiki/Clipping_(audio)

If this isn't sufficient, let's continue on an audio discussion group like AVS or AV123.

David

[my_new_v]

Oh, and, by the way, I dearly hope you have all intentions of bringing your car to SPL competitions, because 15" subwoofers will only haul out pressure and little tone. If you want SQ, a nice heavy 10" in a sealed box will give you plenty of punch, tone, and low frequencies. Anything beyond 12" is overkill.

I dunno what kinda 15's you've heard but I have heard a Mojo and WOW! lol. 15's will sound good if you have the right one and you cant go wrong with Memphis.

Oh, and I called my friend about the underpowering thing again and I must have misunderstood him. Underpowering a sub wont hurt it, you are right. But he did say that if you dont have an amp that meets the sub's specs. it can make the amp work harder and cause it to start clipping.

[Jemdawg]

Clipping isn't really from underpowering, it's from using an amp that doesn't have enough power and maxing out the gain. Clipping happens at the amplifier. If you've maxed out your gain, then you need a higher powered amp. If your amp is underpowering the speaker, then keep the gain down, this will not hurt the speaker, this is underpowering. There is a big difference between underpowering and clipping.

[bikeman]

There is a big difference between underpowering and clipping.

I fail to see that from what you've written. In fact, you seem to be making my case. You may be arguing that underpowering and clipping are not the same thing and you'd be right but that's not what I reading from your post. David

editI've thought about what you've written and I understand what it is you're saying. You're correct.

David
Modified by bikeman at 5:04 AM 7/8/2008

[my_new_v]

Clipping isn't really from underpowering, it's from using an amp that doesn't have enough power and maxing out the gain. Clipping happens at the amplifier. If you've maxed out your gain, then you need a higher powered amp. If your amp is underpowering the speaker, then keep the gain down, this will not hurt the speaker, this is underpowering. There is a big difference between underpowering and clipping.

Yeah thats what he was saying. IF the amp works too hard because it doesnt meet the sub's specs. it might start clipping.

And I agree with bikeman, at first I was a little confused on a couple of your posts but I got it eventually lol.

[Knightro2]

"Holy disappearing backseat Batman!" said Robin."WHAT!?! WHAT ABOUT MY RAP SHEET? I CAN'T HEAR YOU BECAUSE MY EARS ARE BLEEDING!" said Batman"WHY ARE YOU READING!?! YOU SHOULD BE DRIVING!?! " said Robin

[kcourtad]

well ive been messing around with the amp a little bit... and i got it tuned to where if i want to listen to country i just turn the bass down on the factory headunit and it almost cuts it the sub off with just a little bit of kick... but if i want to listen to rock or rap... i turn it up to -2 or +3 and the all panels shake... its the biggest sub ive ever owned and the loudest... its the 1st time ive ever had my wind shield move on me like that... but i got me some 3/4 MDFD ( think thats what its called) board to build the box... just waiting on my friend to come over so we can build it up...

[DejaWiz]

It's just MDF (medium density fiberboard).

And if you need a further explanation of setting amp gains, please read my write up here:http://z13.invisionfree.com/Th...ic=41

[Jemdawg]

Well, abridged, without an analysis of wattage output, I just set my head-unit at the highest level I'd listen to music and bring up the gains until it distorts, then back down a few notches where the music is clear again.

[kcourtad]

i just cant wait to dynomatt the whole car and put a sealed box in there... and yea im going to use the MDF board or maybe try a fiberglass project ???