What is up with my Teufel E 400 subwoofer?!?! Making a loud noise?

Question

Ok so...

Ever since Ive got my Teufel E 400 system, when a lot of air is coming out the air hole, the actual woofer makes a LOUD noise? It's not bottoming out, and there is nothing loose in the enclosure. If I however take the woofer out the noise does not happen.

To summarize the things ive tried ive made a list of things

- It's NOT bottoming out, when I heard the loud noise last time
- It's no where near max volume (It's definitely a defect, rather than a design flaw because ive seen many people at YouTube blast this more
- Ive tried different audio sources, no difference
- Nothing is loose in the box
- It makes this loud noise when threes lots of air chuffing out the port (The 'loud noise' im referring to is NOT talking about port noise

Maybe its the amp? But I cant see how because I can crank the sub more when out the box and it wont make the noise

Answer 1

I'm afraid what you're looking at amounts to the same thing. You're turning up the amplifier too high, making it clip, hard. Then, the speaker cone goes into a "breakup" mode, with large random movements accompanied by a loud fart noise (perhaps even boosted at the resonant frequency of the box tuning).



When you hear that funky noise, turn the volume back down, or you might damage something. Stop doing that.



You're making the assumption that, if you could only "fix" the amplifier distortion (and resulting speaker cone breakup), then the same subwoofer would play cleanly, up to the maximum volume setting, but that's not how it works. There's (virtually) always some sort of limit, and it may only be halfway up the volume control dial.



(The other main purpose of the volume control is to compensate for different input signal strengths; it doesn't mean you can dial it all the way up to the maximum.)



I noticed, Teufel doesn't even include real amplifier specifications (measurements), in their product literature. That's a bad sign. It means the manufacturer knows the performance of their products is inferior, and wishes to hide that fact. I guarantee that "150 watt" amplifier is really no more than about 50-60 watts, and clips hard at the drop of a hat.



If you want a better subwoofer, then you're beating a dead horse with that one. There's no simple fix that will convert a crap subwoofer into a good one.

Answer 2

When there is no input at all, does the subwoofer sit there and rumble like a thunderstorm, or does it put out some kind of feedback? It's possible that something is loose on the circuitboard and every time the speaker cone goes through an oscillation it jiggles the solder connection on the board, it would only have to move a tenth of a millimeter to affect the circuit. That would likely be the loud fart noise. If it rumbles like thunder that might be more like bad semiconductors. If the speaker gives off an irritating crackling fluttering (like a plastic flag in a high wind combined with the sound of a tray full of shot glasses and silverware vibrating in time with the music) sound then the foam ring that surrounds the speaker cone has gone bad:

http://www.instructables.com/id/How-to-Refoam-your-Woofer/

If there is a single small hole in the foam ring, like somebody stuck their finger through it, then you might get a whiffling airy whistle like when you are driving down the freeway and one of the doors is just latched, but not completely closed, or like when a window is open a crack, and the air buffets and whiffles.

Answer 3

We have a technical term for products like this in the audiophile and DIY audio hobby: "Crap". There is no fixing it. It is not broken. This is just the way it works. It is low quality, shoddily made, poorly designed equipment.

Answer 4

Have an audio repair shop test and investigate it.



Fully reassemble it before you take it there.

Answer 5

It's bottoming out because of the standing wave when in the box.

Answer 6

When you buy crap, you get crap performance.

Answer 7

What is up with my Teufel E 400 subwoofer?!?! Making a loud noise? Three big earthquakes will shake the three superpowers; 1st big earthquake in Russia; 2nd (bigger one) in China; 3rd (biggest of the three) will be in America. NATO will nuke Ukraine to blame Russia for it; then NATO will nuke Russia from Scandinavia. China will attack Russia; but will not get past Ural Mountains; bio-genetic weapon will be used against Chinese soldiers (they will run back to China and hide in closets in fear) and weather weapon will freeze Siberia to - 200 Celcius; stadium-size chunks of unmeltable ice will fall from the lower sky (because when rockets go into higher sky they bring this ice down to lower sky). Russia will destroy Turkey and America. China will have a hole across the whole country to the abyss (because of another super weapon used to stop Chinese aggression); radiation from this hole will be massive; Chinese will try to keep quiet about it; a lot of people will fall into this hole.

Scientists don't see dinosaurs because of radiation. Only Eurasia and Alaska (both without coasts) will remain after demons blow up Antarctica (which surrounds the flat earth) and Greenland melts. Move to Ural Mountains or inland Alaska. Sionists want war between Russia and Germany over Serbia from June to October on their holidays because (666 times 3)+(6 times 3) = 2016 (in their twisted logic).

Tube people = demons. Clones = demons. Human costumes that demons wear = demons. Dinosaurs and 666ed people have triple stranded DNA; normal person can't swallow 666ed food (designed for 666ed people). Demons live inside clones. Bacteriologist Alexandre Yersin (who discovered Bubonic plague) is depicted on the Shroud of Turin. There is another shroud on which blasphemer Yosef (who was crucified on a pole in 1066 AD) is depicted. Menachem Mendel Schneerson, Lenin (el=deity in Hebrew, nine = no in German; so, when chanted repeatedly is blasphemy against the Creator), and Yosef were possessed by Azazel; now, Rico Cortes is possessed by Azazel.

WW3 happens; 7% of people will be left; after people are tired of war, they will elect the antichrist as one world leader; don't vote. ISIS stands for Israeli Secret Intelligence Service. Next false flag: Statue of Liberty in order to attack Iran; one big shake, one giant step forward, one giant collapse. Move away from coasts as nukes will go off in the ocean (at where tectonic plates meet; result: megatsunamis 1km high).

Wear natural clothing so that if a bomb goes off it won't stick to the body as fast as synthetic clothes. All metal will be burned for fuel; so, save knives, crowbars, shovels, wood-burning stoves, etc. Also, save cloth/fabric/textile to cover the wounds and diseases.

Eat natural food because nanochips, cells of aborted fetuses, bug DNA, and other poisons are in food that is commonly sold; reject vaccines, medical care, medicine, etc. because nanochips are administered thru IVs, implants, fillings, etc. If 1000-1500 nanochips are in your right hand, then you can't make proper Orthodox sign of the cross with the right hand; last mercy for you then will be to cut the hand off.

Seraphim of Sarov and Sergiy of Radonezh will be resurrecred after WW3 for a short time; Seraphim of Sarov will show the new Ruski Tsar who will fight the antichrist for about 2 years and 8 months. Those who go see Seraphim of Sarov will be healed of their infirmities/illnesses/sicknesses/ diseases; if you want to see him then, hurry because he won't stay longer than a few weeks.

Earth is flat; stands on 3 pillars (the Most Holy Trinity); pillars stand on water at zero Kelvin. Zodiac is planetary prison of demons; don't believe in horoscopes or you'll exhibit the traits of the trapped demons. Most thoughts and dreams are from demons; demons never do good. Sleep fully clothed; pray the Jesus prayer. Pray to your guardian angel to have normal sleep.

Humans were created about 7525 years ago. Ruski Orthodox Christian Vyacheslav Krasheninnikov was the last prophet before Enoch and Elijah return to preach against the antichrist.

Birds participate in time creation. It's a sin to kill birds. Dinosaurs live under our level. They will get out through sinkholes and lakes. To kill them, go for their nerves. Save the birds; but kill the dinosaurs. First dinosaur will come out of Volga River in Russia.

Demons grow human skin (from a sample taken during abduction) and put it on so as to look like us. Demons will invite people to be healed inside their UFOs; those who go will be like zombies after. Gov't provides demons with diamonds and allows demons to abduct people. If you're being abducted, slowly pray the Jesus prayer.



Don't panic. Demons use diamonds and souls to power their UFO craft. The bigger the diamond, the more it lasts. Demons have 4 UFO bases: 1)Moon 2)Inside fake mountain Kailash in Tibet 3)In lake Baikal in Russia 4)In Atlantis which is underneath the Mariana Trench in Pacific Ocean. There are no aliens. Nobody lives on other planets.

Airplanes that go down are hit by demons because they need the airspace to fight Jesus. Antichrist is pale with red eyes. He's possessed by Satan since he's 12 years old. He flies. He wears gloves to hide long nails. He's surrounded by demons who appear as angels of light.



Don't go into a UFO to be healed by demons. Green 666 is given by isotope rays on wrist or forehead when people stretch hands to receive small plastic grey card with no name on it (World Passport). Police will microchip and isotope ray people on the highways. Microchipped people will be influenced by computers to take grey plastic card; but when they do, 666 is given. Food stores will isotope ray people too. Antichrist will also release prisoners to mark people. Reject 666 at all cost because it leads to permanent hell.

If you're about to be marked, pray the Jesus prayer. Hide with Orthodox Christians to escape 666; leave all electronics behind so that antichrist's minions can't track you. Give to charity in the name of Archangel Michael; he rescues people from temporary hell twice a year (or brings them up a level, that is, to a level with less punishment; eventually, people are freed). Feed the pigeons; when pigeons bow down, people are saved from temporary hell. Forgive me.



https://youtube.com/watch?v=8dub8PF2d8E

http://fatheralexander.org/graphics/sects_e.pdf

http://cs629216.vk.me/v629216013/6f4c/Qji_GVZorQY.jpg

http://ic.pics.livejournal.com/m_e_l_n_i_k_o_v/30839524/10997/10997_original.jpg

https://vk.com/wall-25720730?q=рязанская&w=wall-25720730_57029%2Fall



https://youtube.com/watch?v=0LUKFmZfOrs

http://vk.com/otrok_slava?w=wall-31832035_103469%2Fall

http://orthodoxinfo.com/praxis/guidech3.pdf

http://fatheralexander.org/booklets/english/life_after_death.htm

http://pravoslavie.ru/english/55141.htm