hello Fi car audio and audio pros..

[garyh 0]

Has any-one ever experienced this?

(copied from e-mail earlier sent to [email protected])

hello,

I jsut purchsed a 12" bl with pchamfer, dual2, and flatwind options recently from your company recently.....UPS delivered the speaker on wed. 3/5/08 at 5:30pm. On friday night the 7th I stuck it in a single box for a single 12 and hooked it up to existing amp (rockford fosgate 1oow/rms). Today Saturday I went for a drive to really get a chance to listen to it other than in my neighborhood and I can here a kind of like " pinging" sound....I went home and opened the trunk to get a better listen too and it is even louder in the trunk...it is coming out of the speaker itself!! Is this a "blown" sound? how could this be? I just got it! What should i do? It was shipped out on the 25th and I did notreceive it until the 5th. Why was it so long in shipping? Could something have happened in shipping process? When I was tracking it online, it said the package was redirected? Do I have to send it backalready?

If you need any more information, please let me kno..............G

[ford302redneck 15]

Im confused.

Could you rewrite your email over so I can better understand what your looking to get here.

[Big Shot 0]

What is the amp's model number?

How did you set the gain on the amp?

What is bass boost on the amp set too?

How did you wire the sub?

What type of box is it installed in? (Sealed, Ported... What size? If it's ported what is the port tuned too?)

[garyh 0]

What is the amp's model number?

How did you set the gain on the amp?

What is bass boost on the amp set too?

How did you wire the sub?

What type of box is it installed in? (Sealed, Ported... What size? If it's ported what is the port tuned too?)

okk thanks everyone...you guys are great! I did just go to best buy/geek squad audio install unit and the guy said it is my boxmaking that sound..i currently am saving for custom box to be built, but now have the sub in q-logic (ported) bx 1.25 sq./ft (i knw what your going to say, but am on budget)...so as for now I beleive it is the box rattleing apart.

g

[ford302redneck 15]

That box is TINY.

[jonbearsmt 919]

well, the presure drove the box apart, you need a much much larger box, i would say to take that sub out of that box.. put it under your bed, and wait until you have a custom tuned box.

those bls are no joke.

[ford302redneck 15]

I would say it needs at LEAST 2cuft for daily. Id do 2.5 NET, tuned to 30-32hz.

And let it wang.

Edited March 8, 2008 by ford302redneck

[JimJ 11]

Where's the low pass crossover on the amp set?

[ford302redneck 15]

Where's the low pass crossover on the amp set?

x2

[johnecon2001 82]

It's a pinging sound? You might be clipping the amp and bottoming the BL out. Metal sounding? Could be the coil hitting the back plate.

[jonbearsmt 919]

ya think a bl would bottom out on 900 watts and a 1 foot Q logic?

[garyh 0]

It's a pinging sound? You might be clipping the amp and bottoming the BL out. Metal sounding? Could be the coil hitting the back plate.

yeah metal sounding kind of like poing poing poing, i did go to audio unit at best buy and they said it was the box making thwe noise, due to being to small, air pressure something.......G

[garyh 0]

ya think a bl would bottom out on 900 watts and a 1 foot Q logic?

what does that meanbottom out? sorry new at this.

[garyh 0]

well, the presure drove the box apart, you need a much much larger box, i would say to take that sub out of that box.. put it under your bed, and wait until you have a custom tuned box.

those bls are no joke.

you got it!!!!!!!

[johnecon2001 82]

You're over excurting the sub. Forcing the bottom of the cone down on the back plate.

[garyh 0]

You're over excurting the sub. Forcing the bottom of the cone down on the back plate.

Hey thanks bud for all the advice.....i went to a local Sound Advice shop here in central Florida and paid to have a custom 2.5 box built ti FI spec. I did bring up the subject of this noise and let the tech listen to it in the shop.....we discovered that the noise was due to the outer rubber ring of the speaker was not completely sealed and screwed down to the box therefore allowing the air to escape and make the thick rubber ring vibrate and make noise, the louder I took the music, the lounder and higher pitched the sound became...we then pressed down firmly on the rubber piece and the noise dissapeared......also keep in mind this is the only box I had at the time in the garage here and it was old and really filled with screw holes too.....

But, thank you to everyone for their speedy response and suggestions ( and beleive me I considered all of them too being pretty new to thisstuff)....good to have all you come together on a problem with help....thanks! ..............g

[johnecon2001 82]

That's what the forum is for. I'm glad it was just a sealant issue rather than a bottoming out issue.