You might find that the frequency emission ratings that come with your device do not require any specific type of cable and can work just fine with a standard RCA cable used to connect your subwoofer to the receiver. Free shipping . Cable connected with other end connected to receiver or not = Hum, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. I have a subwoofer which hums. If you have one of those amplifiers, you simply plug the adapter in and then you plug the other end of your RCA cable … RCA is an acronym for Radio Corporation of America – the name of a company that has invented this cable … If it is, try to find something else in the house that you can turn off that might be responsible. Connected the sub to the same outlet as the AVR. Cable connected, on the other end of cable the, On. Take LONG extension cord and try an exterior outlet to see if it hums. BTW, music does play through the subwoofer, but the hum is louder. 6-Inch GLS Audio XLR-F to Dual RCA Y-Cable / Splitter - 4 Pack Home Studio Series (0) Your Price: $29.99. The Cable: Blue Jeans Cable LC-1 Analog Audio Cable… What do I try next? Hum noise is introduced from power cord, noise level increases when unbalanced RCA cable runs in parallel neighboring oval or flat type power cord. It is noticeable from about 20% gain. Truly, there are so many people available to provide feedback and foreknowledge before you begin your journey, so you can always seek the advice of a professional for needs specific to your situation as well. When choosing to use an RCA cable or a subwoofer cable, you might want to test out your options and listen to the resulting sound of each. However, if you find that your RCA cabled connection is not resulting in a highly clear audio signal that does not cause any humming, then it might be time to invest in a more precisely designed subwoofer cable. I notice if I just touch the cable where it is connected to the sub the hum changes, quiets or goes boom. A subwoofer frequency range influences hum greatly. I can also change the hum volume by playing with the subwoofer … The other end of the cable doesn't even have to be connected to anything at all and can be on the floor or in hand. Check your device specifications to be sure. Again, choosing to invest in high-quality cables might not be at the top of your to-do list for your sound system, but starting at the base of where your audio experience begins is an essential way to achieve the highest quality audio performance from the speakers in your sound system. ... two from a ground loop where the 60 Hz hum travels on the shield of a coaxial cable… AudioQuest - Irish Red 9.8' Subwoofer Cable - Black/Red. Subwoofer: Klipsch R-100SW When my subwoofer is connected to power alone , and On Auto is enabled, No humming . But, just like the type and quality of speakers you use immediately transforms your sound experience within your home theater, the cables used to connect the components in your sound system matter all the same. Not only is it important that the wiring is appropriately available and connected, but the shielding on the cable can help to ensure the proper emission of the audio signal and protection from audio distortion (such as humming that has already been mentioned). Solder the BLACK wire of the REL high level cable to the ring connection of an RCA plug and connect it to an unused RCA input on your system. So, if you are wondering if a subwoofer cable or an RCA cable is better for your sound system setup, the best thing to do is to check the specifications of each of your devices and choose to invest in the highest quality cables that fit your budget and specific audio needs. In most cases, this is pretty easy to detect: disconnect your subwoofer from everything except power (yes, unplug the incoming signal cable), and power it on. If you are using an RCA cable to connect your sub to your receiver and you do not notice any distinguishable sound distortions or humming, then there is not really a need to change this out. 2) The hum is present if ANY one HDMI device that uses a 3-pronged AC plug is connected to my A/V receiver via its HDMI cable … If you can't stop the hum with just these two things connected, you're pretty well screwed and I'd look into an isolation transformer at that point. Home Theater Academy is compensated for referring traffic and business to these companies. - A direct connection with an external … Welcome to Home Theater Academy, my blog. The difference between subwoofer cable and RCA cable is a particularly confusing topic. Then I at least know which devices to check. Home Theater Academy also participates in affiliate programs with Clickbank, ShareASale, and other sites. Free shipping for many products! Realistically, this comes down to the wiring and the coating that is added to a standard RCA cable to make the subwoofer cable what it is. Subwoofer cables are designed with more technology specific to the function of the subwoofer. KabelDirekt RCA Subwoofer Cable, Cord (20 feet Long, 1 RCA Male to 1 RCA Male Audio Video Cable, Digital & Analogue, Double Shielded, Pro Series) Supports … A subwoofer cable is basically a higher-quality, better shielded version of an RCA cable. Install a coaxial isolation transformer on that cable. Like I said before... removing the RCA cable between the subwoofer and receiver does not get rid of the hum… I have tried various scenarios to see where the hum is coming from. After all, there are so many different components that you can choose to invest in with a sound system. The sound is awsome, however the subwoofer has a constant hum even when everything (exept power) is disconnected. This is not always the case, though. This occurred with all 3 cables. For a better experience, please enable JavaScript in your browser before proceeding. However, these two cables, while they do often serve the same purpose, vary mainly in their ability to achieve a high-quality connection between the subwoofer and the receiver. Free Shipping! The problem is the same with the unshielded cable delivered with the speakers. Ok, so maybe you are debating upgrading your cables to using subwoofer cables specifically designed to enhance the low-frequency audio signals sent to your sub. The interconnect cable is shielded and uses gold plated RCA connectors. The humming is also audible through headphone after disconnecting the dual RCA cable from the amplifier. Will subwoofer cables be worth it? While a subwoofer cable will surely do the trick, you might find that an RCA cable can achieve an (almost) indistinguishable quality of audio that you will be just as pleased with. Check out: The 9 Cables You Need For Home Theater Installations. For example, you will likely find that video cables have an impedance different than what your subwoofer will need, so you want to make sure that the ratings (Ohms) match up between the cable and the subwoofer. Thus, if an RCA cable connected to a subwoofer is equipped with extra shielding, it allows reducing hum … Found 200 records in Search of Cable Asylum.. 1: That's the combo I'm using (Morrow IC+Clear Day Double Shotgun)) (9.40) Posted by Dave Pogue on … So I brought the sub to an isolated area of the house again. Depending on what vintage of our subwoofer that you own, you may have a multi plug which requires a quarter phone to RCA adapter, which is included with the subwoofer. 1) If I disconnect the RCA coaxial cable (a high quality, shielded, 50' cable) from the subwoofer, hum goes away. The 9 Cables You Need For Home Theater Installations. So I went ahead and tried this. Building home theater rooms has been my hobby for a long time. This article provides a detailed description of both wires and should help you make a well-informed choice. Home Theater Academy is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Since the cables are what carry the audio signal between the subwoofer and your receiver, you need to be sure to protect this signal with a high-quality cable. SHD Subwoofer RCA to 2RCA Cable. A friend of mine has a subwoofer that as soon as an RCA cable is plugged to it, starts to hum. When sub is on and light is red (i.e. Cable in question is a coaxial rca cable. ... Monster Audiophile 2 Male to 2 Male Dual RCA Audio Stereo Subwoofer Cable,Hi-Fi. An RCA cable connects a subwoofer to a receiver with an audio signal sent to the standard left, right, and center channels with a coaxial connection. Hope you find the information useful. I was using a cheap unshielded cable thinking it wouldn't matter. If you still haven't found a subwoofer cable … This is likely a ground loop causing current to flow through your subwoofer audio cable because of voltage differences between the subwoofer electrical ground and your equipment ground. Investing in high-quality cables is essential and a subwoofer cable would provide better sound quality as compared to an RCA cable. One end of the subwoofer/RCA cable will be plugged into the Subwoofer Output on the back of your receiver. There are a few possible causes of subwoofer hum: (1) internal noise from the power supply, (2) induced hum in the subwoofer cable, (3) hum getting into the signal … Over the years, I have learned a lot about AV equipment and room acoustics. But, if you are experiencing issues with distorted sound quality coming from your subwoofer, you might want to consider upgrading to a subwoofer cable or at least replacing your cheap RCA cables with higher quality cables. A subwoofer cable typically contains the same wiring but has additional shielding added to reduce the speaker hum and provide greater sound clarity. An RCA cable connects a subwoofer to a receiver with an audio signal sent to the standard left, right, and center channels with a coaxial connection. Gold plating … I'd like some help with a cause and solution. When looking to distinguish between various types of cables, be sure to check the specifications of the cables themselves, but also look for shielding and protection for your wires. Like Haas said, cheater plug is a good tool to help track it down. amp is off, or is on but not used sub) no noise / hum … RCA cables labeled "subwoofer" may have tighter woven fibers in the mesh of the shield or a second or third shield made of mesh or foil. However, if I plug in the L and R speaker wire cables (with banana plugs), and On Auto is enabled, the subwoofer … Connect the BLACK wire to the ground lug provided for phono input on integrated amp or pre-amp. Try plugging AVR/Sub into the same outlet like you just did, then try switching to the other outlet to see if one or the other is the problem. When it comes to a subwoofer, how does a subwoofer cable compare to an RCA cable? As soon as the cable is pulled out from the back of the sub, the hum … What happens when you connect the sub to a battery operated device like your phone for source? Can You Add Wireless Speakers to a Surround Sound System. A balanced cable would have two signal carrying cables … Our recommended subwoofer interconnect cables have not one, but two, dense braid shields, and in our testing we've found this to be the best shield configuration, outperforming conventional single-braid, braid-and-foil, and unbalanced twisted-pair cables when it comes to hum rejection. They are all coaxial design (one signal carrying cable surrounded by a shield). With the rca cable connected from sub to avr the hum went away! 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