The first step is to locate the exact position of your neighbour’s speakers in their house. Place the antenna and amplifier near that location but on the outside of their house. The optimal location will result in the effective destruction of the speakers. You’re all set up and ready for the destruction. There’s no doubt that the Jam Symphony is an at-home, non-portable speaker. It’s going to spend its life on a shelf or worktop, not trekking around with you on your hols in the way of the Jam Heavy Metal. If there’s one thing the Jam Symphony forgoes to pay for that relatively low price, it’s the build quality. This speaker doesn’t feel flimsy and it isn’t unattractive, but neither does it offer the glamour or solidity of most speakers of this size. The Jam Rhythm uses quite a traditional speaker setup. It has a large 3.5-inch driver tuned for bass and a pair of smaller drivers, rather than a series of dinky drivers and a couple of passive bass radiators.

Small and cheap Spotify Connect speakers that we’ve reviewed over the past year or so have almost universally sounded quite poor. Here, we were pleasantly surprised. One way in which Jam has kept the price of the Symphony down is to finely hone what it’s about and what it does. This is a Wi-Fi speaker. It doesn’t have Bluetooth and there’s also no battery. We had a few router-specific issues with our Netgear test router during setup. It was a minor nightmare, but it worked just about perfectly once we’d switched to an Asus router. Jam Audio told us it is working on the Netgear issue. A mid-test firmware update has hugely increased reliability, but there are still sync issues with our Netgear router. The Jam Rhythm is a dinky wireless speaker. There’s no shortage of rivals in this class; top alternatives include the Sonos and the less impressive Bose SoundTouch 10. Crank the volume and you’ll eventually get a touch of hardness out of the Jam – those handclaps get a little too snappy – but the reach of the overall sound means you’re less inclined (metaphorically at least) to twist that dial.The “favourites” button is the star. The blue LED next to it shows the current favourite being used More useful, you can also set four favourites. These are accessed using the “favourite” button on the top panel. They might be radio stations, Tidal albums or Tidal playlists. You can’t use them for Spotify albums or playlists, though, because Spotify isn’t fully integrated into the app. This sound signature is fairly common among wireless speakers, but it isn’t one adopted by the Sonos Play:1 and, curiously enough, the Symphony’s little brother, the Jam Rhythm. Jam’s smaller speaker has much more of a focus on the mids, but poorer treble clarity and a smaller sound in general. That the Symphony offers scale close to the Sonos Play:5 is worth appreciating, though. The Jam Symphony is yet another hit from Jam Audio, a company that’s fast becoming one of the best names in low-cost wireless audio. Verdict

This is what you’re going to do: Go to your neighbour’s house and kindly ask them to lower their volume or not to play their music for an excessive amount of time. Always consider all the possibly harmless and friendly solutions before heading to violence. Wait for your neighbours to play some music. Wait until they are truly enjoying the loud tunes coming from their speakers. This is the right time to set up your noise cancellation device. The multiroom side of the Jam Symphony is all about groups. You can pair up multiple Jam Audio speakers, and choose whether they play the left or right channels, or both. Jam Symphony – Sound QualityDoes it matter? The Jam Rhythm isn’t a speaker designed to be the focal point of your lounge; it’s a speaker for which you might consider unseating a few Bill Bryson books on your bookshelf. It’s small and it will blend in. It isn’t beautiful, but nor is it ugly. You will need to bring out your tone generator and generate a tone of 10 Hertz. Starting the tone generator will allow the amplifier to amplify the AM signals and an electrical pulse of 10kHertz will be emitted. The 10kHertz will be emitted from your neighbour’s speakers, enough to essentially destroy the speaker altogether. That big bass helps here and the little speaker’s weighty sonic character is a great foil for the sometimes sonically lean world of MP3 files and Bluetooth transmission. As such, the Jam Symphony would make a pretty decent alternative to a Sonos Play:5, if such a model is way out of your price range. The app is where the important features live. Aside from the frivolous intercom feature, which lets you use the Symphony and your phone mic like a loudhailer, the app is mostly all-business.

Destroy” from a distance means just that, keep your distance and keep to the law. How Do Speakers Work? We didn’t find the Jam Classic to be the most captivating of performers, noting that if your aim was to boost the audio of your smartphone, “the JAM Classic 2.0 does enough. Just.” Three stars was our indifferent verdict. The body is plastic, the speaker grille is a basic fabric wrap that won’t repel moisture, and the series of rubbery buttons on the Jam Rhythm’s top appear pretty basic. Consistent pragmatism is what characterises the Jam Rhythm hardware: no part feels poorly made, but the build is prosaic.On the other hand we were very impressed with what the Jam Heavy Metal had to offer, handing it five stars and praising its “impressive bass reach”. We called it a “well made, good-looking slab of metal," and it's a popular option given it tends to be half-price if you shop around. It cuts out all the superficial fancy elements while retaining plenty of useful features and support for streaming services. Crucially, sound quality is strong too. Bass is impressive with the volume raised and balance is solid, making this speaker very easy to recommend to those on a tight budget.

The Jam Rhythm is a full Wi-Fi speaker, capable of multiroom audio antics, Spotify Connect streaming and even a direct connection to Tidal. It doesn’t have Bluetooth, though, so you can’t stream the audio from your phone games to the speaker. There is an aux input, so it isn’t a closed system such as the Sonos Play:1. You know the scene; you stumble across a song on YouTube and settle for your laptop, tablet or smartphone's awful-sounding speaker system. That won’t happen with the Jam Heavy Metal – pairing is always worth the effort. The bass goes deep, too. If you’re able to crank up the volume every now and then, the Jam Rhythm is worth dancing around the house to. However, like most speakers using a traditional driver setup such as this, it does need to have some power behind it to really open up. There are a couple of special features, too. You can turn the Jam Rhythm into an intercom, speaking into the app through your phone and out of the speaker. Party MC, perhaps?A few such niggles aren’t a surprise for a new wireless system, and while the software isn’t as polished as that of Sonos, it’s entirely fit for purpose. Some patience may be required during setup, though. Speakers work on unintentional electromagnetic interference. Normally, speakers would play “in-phase”, which means that the sound coming out of them are both on the same wavelength. We call this constructive interference. When a frequency consists of two wavelengths on alternating patterns, they are referred to as “destructive interference”. These wavelengths are 180 degrees out of phase.