BIC America WTR-Sys Wireless Transmitter/Receiver Kit for Hookup of Wireless Subwoofers and Wireless Powered Speakers, 8.30in. x 8.30in. x 2.20in.

This is a superb product. I have a music studio that needs mic signals sent wirelessly to a recorder, and then that recorder's output sent to an amplifier/speaker system. There are other, cheaper solutions that "automatically pair", but try having two separate links going like this at the same time; they just start cross-pairing. This product is excellent; they have DIP switches on the exterior of the case to set the channel (0-3) on both the transmitter and receiver. When you power them up, they immediately latch on and start working. Audio quality is high. The transmitter/receiver kits come with removable antennae (so you can connect an extender somewhere else if needed) and pre-cut velcro strips to quickly mount them on out-of-the-way places. A LOT of cords with stereo RCA to various other formats are included. The system comes in a very well-thought-out package that separates all of the gear that you get. It's well worth getting these units to select the channel; you'll be able to be in control if your neighbor starts using some channel randomly, and also, it's pretty likely you will want another one for another radio link, and you will want them to not cross-link. The competition doesn't handle this, and this product does exactly what is needed.

Like others have said, there are frequent sound dropouts. I have tried cycling through all of the channel settings, repositioning the units, orienting the antennas to multiple polarizations without success. Even in a line of site configuration with only 10 ft of separation, the signal frequently drops out (approximately 3 or 4 times per minute.

There are several competing Bluetooth 5.0 AptX transmitter/receiver systems in the market at similar prices that claim low latency. But nearly all of the competing products simply don't have sufficiently low latency if you want to use them with subwoofers are signal sources for wireless projection systems. Imagine a delay in bass or a delay in sound when watching dialogue in a movie. BIC's WTR-Sys really delivers in this respect. There is no noticeable time lag/sync issues at all. I simply connected one of the transmitter's RCA inputs to the subwoofer output of my receiver and the corresponding RCA output of the receiver unit to my subwoofer and left the channel switches on both units at their default channel. If there is one downside, it would be that if you leave the transmitter/receiver systems off for an extended period of time, the transmitter tends to go into a standby mode for several seconds at a time and stop transmitting. You can see this happen when its blue LED indicator turns off and flashes several times. The next time you feed a signal to it, it would turn on but it occasionally sends a signal to the receiver even when there is no signal. The result is that my subwoofer makes faint noises that sound similar to someone pully a cork from a bottle. On one occasion when the the transmitter was fed a signal after an extended period of not being used, the signal received by the receiver would not be complete, resulting in a somewhat distorted bass signal at a low volume. About a couple of minutes later, it would work as it should. In an nutshell, it works very well with the aforementioned quirks. If you can accept that or simply turn both units off when you don't use them, then the BIC transmitter/receiver system could be considered well-nigh perfect. Hence, my one-star deduction.

I cannot believe that I'm the first person to buy or review this item, but here goes. I bought this to eliminate the hard-wire running from my Denon receiver to my BIC F12 sub. Note: you don't need a BIC to use this- it will work on anything with RCA jacks. I bought this (instead of the other "more reviewed" options) because I trust BIC and have had a great experience with them to date (I've had my F12 for years, and recently added the Acoustech PL-200 to my basement). Packaging: BIC clearly took notes from Apple. The product is packaged in very sturdy, very well suspended cardboard. Everything is very clearly labeled. If I had ONE complaint it would be that the top of the box fits too tightly...it was a chore getting it off. Accessories: BIC gives you every cable that you need to hook this up: a RCA "Y" cable (brings the single RCA subwoofer out on your receiver to dual RCA's) for both sides and a 3.5mm/RCA pair for both sides. Also provided are enough adhesive velcro strips to suspend a VW Beetle, intended so you can hang it anywhere that works for you (I placed mine on the back of my subwoofer, out of sight). Setup: Stupid easy. Plugged it in, made sure they were both on the same channel, powered up. Both sides can run off USB power, which was nice: The transmitter is plugged into my Denon receiver for power. One less wall wort! Functionality: My sub is about 10 feet away from my receiver. There is zero lag (according to the Audyssey calibration on my Denon) introduced by adding this to the mix. Bass is clear and solid before. Auto On/Off on my sub functions properly. I've got my house covered by enterprise class wifi, and although the more reviewed brands had issues with wifi, I have not experienced any issues with the BIC. Summary: Don't hesitate to buy this.

My purpose for looking at and eventually buying the wireless transmitter/receiver kit was two fold: 1) I was looking at alternate locations for placing my subwoofer that were not ideal for running wire, and 2) I am fighting a ground loop problem that recently popped up and a wireless solution seems to have less degredation of signal compared to ground loop isolators (transformers are not linear in frequency response/gain). I found out through a subwoofer crawl (thank you Zeos Pantera), that my subwoofer was less than ideally placed and the ideal location was not ideal for a cable run (unless I had a strong desire to trip over cables all the time). Having a wireless solution really expands the possibilities of speaker placement. When I started to get a ground loop that was most noticeable via my subwoofer (what else makes 60Hz stand out so much), I started looking at isolation transformers. Even the expensive, high end devices had complaints of signal compression at certain frequencies (some people going so far as to test at different volumes/gains, measure and plot the difficincies). This made the wireless solution more attractive. Some people might argue that wireless loses fidelity, but for a subwoofer, it isn't that big of a deal and new wireless technologies are much better than they used to be. Unboxing: These units come with everything you need to get them hooked up and powered. You will not need anything else, that is unless you have some custom or proprietary connections going on. Everything is packaged well in a nice box. The cables are a bit cheap in feel, but get the job done. The transmitter and receiver units themselves are plastic, light and feel pretty cheap. While everything works, the feel of the cables and transmitter/receiver boxes does seem like it should only cost half of what I paid. Functionality/Performance: This transmitter/receiver pair does exactly what is advertised. The sound quality, for my subwoofer test case, is good. I do not hear any noise or degradation of signal. I have not tested the maximum distance I can reach with them, but my use case only calls for anywhere from 5-20 ft direct line of site. They have completely removed any subwoofer hum that I previously had due to a mysterious ground loop issue that cropped up in my house over the past couple of months. One odd thing is that I do hear an occasional pop/bump from my subwoofer that I do not recall hearing when I had it hard wired. I have tried a couple different channels, but the issue persists. I do not know if this is an issue with the transmitter/receiver (e.g., RF interference, design flaws, etc.) or if it is somehow related to an energy discharge being built up and released (maybe some differential or noise due to my ground loop issue). Overall, I would say that this transmitter/receiver kit is good if you need to locate a pair of speakers (or subwoofer) a modest distance away from the source an do not have the luxury of easily routing new cables. It also seems to be a better choice for eliminating a ground loop issue that the use of an isolation transformer on the signal line. I do think they are slightly over priced for the build quality of the units and for the quality of the included cables. With that said, the kits includes pretty much everything you need to relocate a stereo audio signal to more desirable locations. Update (04/29/2020): After using the transceiver pair for a while now, it still works, but I am still getting a popping sound. I have read other reviews of users having the same issue. I reached out to BIC America to troubleshoot and hopefully resolve the issue. I was put in contact with a technician from a different company and I had the impression that he was not as knowledgeable about electronics as I would have hoped. He has me try wiring up the transceiver in mono (i.e., only wiring up the left or right channel and running in mono), which did not resolve the issue. I also notice that the blue connection light on the transmitter occasionally goes out for a second or two. I've tried different power supplies, without any luck, and even used the USB power port on my Yamaha RX-A2030 amp, which caused a high pitched buzz on my center channel. Since I have been unable to stop the popping and connection issues, since their technical support was unable to resolve the issue, and since I was not offered a replacement of a potentially defective produce, I am downgrading my rating from 4 to 3 stars. I would give it 2 stars, but others have had good experiences with this product, the sound quality seems good and I feel like I must just have received a defective unit.