I have a DSM 1515 sub, and i've been noticing a problem. Never experienced any issues, and for most of the time I have left the power switch set to Auto. Whenever the receiver loses the audio "codec"(signal) it should mute all of the pre-out jacks for a short period of time. If you notice that your subwoofer is humming constantly, then it may require a bit more troubleshooting to find the cause. Speakers/Subs making heartbeat, pulse, thump, sounds. Unfortunately, sometimes the cause of a humming subwoofer is simply the subwoofer itself. Hear audio clip. Do not use the "auto" or "auto-detect" setting. If the hum stops, install an isolation transformer on the cable. Onkyo RZ830 - Speakers/Subs making heartbeat, pulse, thump, sounds. A poorly integrated sub-woofer will sound thick, heavy, boomy, and unnatural, calling attention to the fact that you have smaller speakers reproducing the frequency spectrum from the lower midrange up, and a big subwoofer … If you notice that your subwoofer is humming constantly, then it may require a bit more troubleshooting to find the cause. If your subwoofer(s) "thump" or "pop" when you are changing inputs on your receiver don't automatically blame the subwoofer. For ways to contact our Product Support team, please see our article - How To Submit. somethings wrong my babies, they did this awhile ago too, When my cd player is on the subs do a constant thump like a heartbeat. If you need to contact us regarding this, please see our article How To Submit for assistance. The most likely culprit is a wiring problem that presumably happened when you reinstalled the speakers. Start by putting the subwoofer in your listening seat—that’s right, in the seat, not on the floor. The sound can be described as a tone which lasts about a second. Last night I paused a movie and a constant thump was coming from the sub. If you find that your home has no grounding losses and that the cable/isolation transformer does not resolve either, then the subwoofer's internal amplifier may need repaired or replaced. I've got a 6 year old JBL 10" subwoofer (home theater sub, not a sub for a car) that has suddenly taken to making a constant rhythmic knocking sound, even when not in use by the receiver. Then, play a familiar, bass-heavy audio track, preferably without the main speakers. Thumping is a common problem in audio design. Whenever I turn my subwoofer on, I get a thumping noise (in a rhythym like a heartbeat, volume is steady regardless of what I turn the volume to). hey all. This delay may exceed the time the pre-out jack is muted----and you end up with the "thump" sound from the subwoofer. The trick is that one needs all of the grounds on all of the gear to have the same potential. All Rights Reserved. I was quietly minding my own business, trying to … Subwoofers doing a heartbeat sound? How to get rid of hum and eliminate other noises from your audio and video systems Don't let buzz, hum, or hiss ruin your AV experience. You can have the receiver serviced but before going through that inconvenience try a couple things to minimize the problem. Beyond that, if your home wiring has serious grounding issues, you may need the aid of an electrician. Ground loops can often be resolved without spending any money on the problem. Copyright © Browse the top-ranked list of Thump Subwoofers below along with associated reviews and opinions. . Even on pause or mute. I turned the receiver off and it continued. Subwoofers. Just put my system into my new car and now I get a constant thump even at low volume and I only have my amp 1/4 of the way up and when I turn it up past the 1/4 mark it just beats repeatily waht is causing this I tried a rca loop but I get no signal with it pluged in its in at head unit going out to the amp but no signal any help would be great thanks. Check the wiring against the known correct wiring diagram (if you have it) and see that they match up. For example, if you know the component will only send a digital signal...select the appropriate setting. The Back of the Subwoofer Is Warm - Is this Normal? leave your speakers on but disconected from the computer, if thumping still occures its entirely the speakers. I recently purchased a ProMedia 2.1 BT computer speaker system direct from Klipsch and I noticed almost immediately that the sub-woofer has a constant, steady, rhythmic thump approximately 1 second apart regardless of if sound is playing through the system or not. Whenever the receiver loses the audio "codec"(signal) it … helped a friend out the other day with one of those problem jobs that had just kind of beat them up and rather than heap an additional expense by charging him for what i had helped them with, i asked him about this subwoofer (polk audio psw125) he had in the corner (for the last YEAR!).. If the thumping occures in the headphones at this point, you may have a bad sound card. Another break: I hooked up the speakers to a portable tv, and the sound is clear and loud again. This eliminated the constant hum, but now I notice that when I shut off the power, i get a quick, like 1 second, hum. I have an Onkyo HT-RC360 receiver with polk audio speakers, with the subwoofer being a PSW110. If the subwoofer is plugged into its own outlet, plug the subwoofer's power cord into an outlet shared by the other components. The "Auto" setting can cause the receiver to take a little longer to "lock" on to the audio signal. This is a sign that the amp is being overtaxed by a subwoofer or other speakers to the point where it simply can’t provide enough power. This can indicate there is a failed diode / circuit in the receiver. We hear a constant bass subwoofer like thumping noise every night from about midnight to 7 am. Active 5 years, 9 months ago. If your subwoofer(s) "thump" or "pop" when you are changing inputs on your receiver don't automatically blame the subwoofer. Add thumping bass to your home audio setup with this Sonos wireless subwoofer. I do NOT have any regulator installed at the moment - should a regulator help that as well as the initial thump? Enter your email address to receive new product announcements, tips & tricks to optimize your system, and all other Power Sound Audio related news. best. Can I program a “learning” remote to operate my subwoofer? Is the FM receiver shot, ka-put? Even though everything is off, there can still be noise in the system or transferred into the cable. Check the Input settings for each input device. Browse the top-ranked list of Thump Subwoofers below along with associated reviews and opinions. I connected wire from speaker #2 to speaker #1 and speaker #1 works fine. What could this be do you think? Check for shorts, touching wires or bad contacts. C5 Z06/FRC Corvette Partition Subwoofer Box $179.00 : Subthump Exclusive 2010-2015 Camaro Plug & Play RCA Output T-Harness For Factory Boston Amp V4.0 *Best Seller* In Stock $69.00 *New* 2015-2021 Colorado/Canyon Crew Cab Single 10 Slot Vented Sub Box $219.00 *New* 2015-2021 Colorado/Canyon Crew Cab Dual 10 Downfire Sub Box *Hot Product* $189.00 So when you change inputs or change listening modes and you hear the subwoofer(or any speaker) "pop" this indicates that particular pre-out jack is not being muted....or not being muted for a long enough period of time. Adjust the gain control on the subwoofer in conjunction with the bass level control in the receiver. my wiring set up, Headunit, amp or what? The only way to get it to stop is to unplug the power. worst. After all connections and settings have been verified, turn on the subwoofer. Sign up to get the latest on sales, new releases and more …. The light which indicates on status blinks with the thumps. I unplugged the LFE cable and the thump continued. It is possible that the issue is being caused by a "ground loop". The subwoofer will only reproduce the signal sent to it from the AVR(Audio Video Receiver). Here are some examples of directional/shielded subwoofer cables: Note: When you plug in these directional cables, make sure that the arrow is pointing towards the subwoofer, not the receiver. Ground loops can often be resolved without spending any money on the problem. (Make sure the main speakers are set to “small” in your AV receiver so the low frequencies are routed to the subwoofer output.) If you're experiencing any of these, please contact our Product Support team for assistance. 1. I originally had thought that only my um18 sub was making this odd constant sound, but then I listened in close to my other speakers and they are all making this constant heartbeat/pulsing sound, it's just the um18 makes it much louder (I can easily … What is the Best Way for Me to Hook Up My Subwoofer? Subwoofer Integration Tricks ... no boomy thump, and natural timbre. ), and the like will often resolve the issue. Ask Question Asked 6 years, 8 months ago. Sometimes this is as simple as getting them all plugged in to the same power circuit; sometimes it's a matter of making sure that you're only using modern, three-wire, earth-grounded circuits at all points in your system rather than using old two-prong ungrounded circuits. Any suggestions? For some, there is even an integrated chassis ground connector to help eliminate ground loop hum. 8.If Not, verify all your connections: power supply, subwoofer connections (if this is a 2.1 setup), input etc. I turned the sub off and then back on and again it powered straight on so I disconnected the cable between it and the receiver and it was still acting like it was receiving a signal. Just got in from work and turned the power on to all my TV, Receiver, Sub etc and immediately the subwoofer turned on and a constant thumping noise started. Although the best and most permanent way to eliminate ground loop hum is by fixing the underlying grounding problem, another simpler way to resolve the problem is to insert an isolation transformer in your subwoofer line to break the ground connection between your source and your subwoofer. T he night when the trouble with our neighbours started is a bit hazy because I was in the grips of a savage hangover. Set the AUDIO INPUT setting to the specific audio signal instead of "Auto". This happens whether the radio is on or off; whether the rca cables are connected or not; and whether the subwoofer speaker wires are connected or not. Recently after a power outage I noticed that my sub (in title) has a constant thump with no signal connected. Check the volume level on the subwoofer and receiver or amplifier before sending any audio input. Verify connections, turn on the subwoofer, and set the volume. The built-in Wi-Fi offers a simple cable-free setup, while the two force-canceling drivers eliminate vibrations and rattles for high-quality sound output. The thing that is most puzzling is how subwoofer speakers can make any sound … The common resolution is a de-thumping relay that isolates the speaker until the DC inrush conditions have settled. If the noise exceeds a certain level, a connected Arduino starts up a CD of different annoying music that blasts right back, through speakers that face at the wall. These work using metal layers to reduce the amount of RF and EMI noise. I believe that it is somehow related to the auto on feature which is not defeatable. Use an extension cord if necessary. The thump is the amp turning on and off. Klipsch - Fuse Specs for Powered Subwoofers, Troubleshooting the Internal Amplifier of a Subwoofer, Mirage - Fuse Specs for Powered Subwoofers, Energy - Fuse Specs for Powered Subwoofers. Sep 6, 2017 #1 Ok I have had this sub for about 10 years. This Sonos wireless subwoofer features a high-gloss black finish to lend an upscale touch to your space. You may find a combination of settings that maintain correct bass levels but reduce the annoying "pop" a bit. Make sure the line to the sub is away from any power cords or cable / Sat TV cables. ProMedia 2.1-What are the specs on the speaker wire. Klipsch. It is possible that the issue is being caused by a "ground loop". Since 2012, we hear a low bass rhythmic sound (music?) I have an RCA cable running to the subwoofer, but even when not hooked up I still get the thumping. We live in a relatively quiet area. One other method of resolving this "ground hum" is to get a directional/shielded subwoofer cable. Start the volume low and gradually increase it to determine if the subwoofer is working correctly. I muted the master volume, and the thump is still there. Changing where things are plugged in, making sure your home power circuits are all properly grounded (an outlet-checker from the hardware store can be handy! Viewed 33k times 4. Paradigm Servo 15 v.2 - Constant Thumping (Heartbeat) Hide sidebar Show sidebar Thread starter JWhite; Start date Sep 6, 2017; JWhite Enthusiast. I've left it unplugged for an hour and plugged it back in (without any input) and the thump starts again. Shortly after i turn on my stereo (within a couple minutes), shortly after i turn off my stereo (within a couple minutes), and sometimes just at random (stereo on or off) my sub will just start thumping. This may be "digital" or "bit-stream" or even the type of cable/input used such as "digital co-ax input #1". The FM receiver went off and back on as would be expected with one glitch. If the hum persists, and your system includes a cable TV, disconnect the cable line. My guess is they have a fairly powerful subwoofer, because I can't hear anything apart from the THUMP THUMP THUMP - I never hear them talking or anything. Oh yeah. Hello, The subwoofer in my car constantly makes a thumping sound about every 6-7 seconds. There’s now a constant 60 Hz hum in one speaker (let’s call it speaker #1) and the other (speaker #2) is working just fine. These can transfer noise into the cable. The subwoofer will only reproduce the signal sent to it from the AVR(Audio Video Receiver). Thumping or constant high pitched/squealing sounds may be symptoms of an amplifier malfunctioning. with slight vibrations in … The thumping is a repeating power surge sent down the speaker wires. Sometimes it is very loud, most of the time it is not necessarily that loud, but it's the persistent THUMP THUMP THUMP and unpredictable noise level that bothers me. In-home audio setups, clipping is typically caused by an underpowered amp or inefficient speakers, but loose or burnt wires can …
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