At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
May be a couple of things; The first is a resonance in the cabinet, which may not be noticeable at high volumes. If the speaker cabinet was ever dropped,or got cracked from dropping , dry weather,or whatever, there may be certain frequencies that make the cabinet rattle. Try holding the cabinet when it rattles and look for anything loose,from a side wall to a loose foot, or the speaker itself. Tighten up loose items and seal any gaps or cracks On the cabinet.
The other problem could be a partially blown speaker. Test by lightly pushing in on the outsides of the speaker to see if it moves in and out freely. If there is a scratching sound, or it drags slightly , it might be blown. Also,the dust cap or another part of the speaker may be loose. Check that, and reseal if loose. Replace or have reconed if blown.
Fuse Requirements: USA @ 120 Volts /60 HZ - 10 Amps, 5 x 20 mm GMC/T/slow blow Europe @ 240 Volts/50 Hz - 5 Amps, 5 x 20 mm GMC/T/slow blow Japan @ 100 Volts/60 Hz - 12 Amps, 5 x 20 mm GMC/T/slow blow
The Ohms for individual speakers is measuring the impedence of that speaker and NOT the pure resistance. Speakers are usually 4hom or 8 ohm impedence, but you can get outside those figures occassionally. When you talk of "Cab" are you talking of a "Speaker Cabinet"? What is it you're trying to achieve? Connecting the wrong impedence speaker to a device can do damage to that device or sometimes even to the speaker itself. May I suggest you say something like "I want to connect the speakers from my [Brand Name and Model] stereo sytem to my [Brand Name and Model] Ipod thingy." If this is the case, then you might do some damage to your equipment.
The jacks have to be replaced. If you are not adept at repair, best to take it to a shop for the repair. Do NOT use the unit till repaired. If the jack shorts you may damage your amplifier.
This is either caused by something in or on the cabinet vibrating... grilles and logos are common problems OR one of the speakers is blown OR you have contamination behind the grille. If you have driven the speaker too hard, the voice coil can distort from heat and rub the magnet pole pieces. You can tell this by removing the grille and GENTLY moving the cone back and forth. If you can feel any roughness, you need to have speake re-coned.
The noise MIGHT be a resonance in the cabinet. The way to find out is to sweep a frequency upward to see if something rattles at certain frequencies... Don't be surprised to find several. Within the cabinet are the usual culprits: Wires rattling against the cabinet, loose debris, grilles and the logos on them, circuit boards with crossover hardware, cabinet wood that is not glued and rattles against itself. Things like bass port tubes can rattle.
Find an audio generator and sweep the cabinet from 50Hz to 10KHz and you will be surprised. Some speakers may have resonances as well. Expect things in your room to start rattling as well.
This is really the only way to find the problem. PLEASE wear hearing protectors at levels above 90Db.
We would exoect to see four, 4 ohm speakers in series parallel or four 16 ohm speakers in parallel.
If teh unit seems to rattle, first put an audio oscillator into it and sweep the frequency. It is common for grilles and also logos attached to them to rattle.
Open the unit and power each speaker the same way individually for a test.
I suspect you will find either the grille or mounting hardware is actually doing the rattling OR possibly the wires inside are vibrating.
If the sound is a scratchy buzz, then the speaker(s) have probably had voicecoils damaged by overheating.
In this case, buy 4 new speakers and replace all. It is not likely to find replacements for the Buggera brand they put in these cabinets. Also the word on the web about that brand of speaker is not very good.
×