JohnBlue JB4 Mk2
The difficult second album
- Beautiful construction, smooth and sweet sound
- Nothing noteworthy
Just like JohnBlue’s entry-level JB3 desktop speakers, the JB4 Mk2 speakers provide a beautifully sweet interpretation of music and other audio. Notes from mid-bass all the way to higher registers are reproduced smoothly yet with immense layering of detail. Frankly, there’s not much we don’t like about the JB4 Mk2s.
Price$ 880.00 (AUD)
We loved JohnBlue’s miniature JB3 monitors, so we were looking forward to experiencing the JB4 Mk2s. Thankfully the same ethos was followed — high quality construction with simple components, and no complicated crossovers or dampening — and the end result is speakers that sound spectacular at all but the highest volumes.
The JB4 Mk2 speakers are beautifully constructed. Instead of the glossy black lustre of the entry-level JB3 speakers, the JB4 Mk2s have a mottled cherry veneer that’s polished to a satin sheen. Constructed of one-inch thick MDF, the speakers feel very solid; the trade-off is that they weigh six kilograms each. The cherry wood veneer is quite realistic, while the copper-plated posts on the back of the enclosure are of equally high quality.
Each JB4 Mk2 uses a single four-inch full-range driver, placed in the centre of the speaker’s fascia. The maximum rated power is a seemingly measly 30 Watts, but this figure is deceptive. With a sensitivity of 89dB, the JB4 Mk2s are able to pump out high volumes from low-powered sources, making them a perfect fit for amplifiers like the KingRex T20.
The only other accompaniment to the full-range driver on the face of the JB4 Mk2 is a low, thin port cut at the base of the enclosure. It’s designed to radiate sound from the enclosure’s edge, amplifying audio while no doubt increasing bass response.
The idea behind an enclosure with a single full-range driver is to cut out complex crossovers and interference from the signal path. Whatever the trickery, we don’t care — because the end result is a speaker with amazing clarity and depth. Like we did with their smaller siblings, we hooked the JB4 Mk2s up to a KingRex T20 and UD-01 playing lossless FLAC audio files.
It’s no secret that we loved the JB3’s expansive nature — their ability to fill a room with sound despite being so tiny — and naturally we were keen to test whether these speakers could equal the feat. Of course, they did. At low to moderate volumes, the soundstage between the speakers is immense. The impression is given that you’re listening to much larger speakers that are positioned farther apart than in reality. This rich soundstage creates a large ‘sweet spot’ in which music sounds best.
Treble from the JB4 Mk2s is very rich — ‘syrupy’, even! There’s still plenty of detail audible, but it’s reproduced with a bias towards musicality and liveliness rather than bit-perfect accuracy. The omission of a dedicated tweeter means that all notes sound very linear and equal, so there’s no emphasis towards high frequencies to be found here. This has the advantage of ensuring there is no painful harshness at higher volumes.
Mid-range is, in a word, engaging. There seems to be slightly more detail evident here than higher up in frequency ranges (maybe a function of the full-range driver’s physical preference towards middle frequencies). It’s possible to distinguish individual guitar strings and hear every nuance within a singer’s vocals.
Bass is more evident than on the JB3s, thanks in part to a larger driver and the forward-firing port at the base of the enclosure. There’s certainly no trace of the boominess or overpowering volume you’d expect from a dedicated subwoofer; but there is a distinctive kick that permeates lower frequencies. Bass is tight and rolls off quickly, so if you’re looking for floor-shaking thumps that last for hours you’re out of luck.
The JB4 Mk2s are not completely suitable for the desktop due to their more traditional bookshelf size, but there’s very little we can otherwise fault them for. If you can find somewhere to set them up with appropriate accompanying equipment there’s a very good chance you’ll fall in love with them.
Join the newsletter!
Most Popular Reviews
- 1 Panasonic Lumix G9 review: A mirrorless moulded to the needs of still-shooters
- 2 LG 65E7T Ultra HD OLED TV review: The South Korean thoroughbred is still first past the post
- 3 Hisense takes the fight to home entertainment heavyweights with flagship Series 8 and 9 ULED TVs
- 4 D-Link Omna 180 Cam HD DSH-C310 review
- 5 Ring Video Doorbell review
Latest News Articles
- Samsung’s Next TV is a Real Frame-Changer
- Express Your Style With Ultimate Ears WONDERBOOM Freestyle Collection
- HomePod review roundup: 'Room filling,' 'best-in-class' sound, but Siri is 'embarrassingly inadequate'
- Sonos say Aussie Alexa support for One smart speaker won't arrive until Autumn 2018
- Apple confirm $499 HomePod for February 9th launch
PCW Evaluation Team
The printer was convenient, produced clear and vibrant images and was very easy to use
I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.
It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.
Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.
The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.
The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.
- Oppo A73 review: The budget smartphone that sets the bar for 2018
- Sony a7R Mk III review: Full, in-depth review
- Which 2018 Smart Speaker Should I Buy
- Which flagship TV is best? Sony 4K HDR Bravia 2016 versus LG 4K HDR OLED 2016
- 10 Blu-ray movies / Best looking Blu-ray movies
- CCIncident ManagerNSW
- FTBusiness Systems AnalystOther
- FTBI Solution DesignerNSW
- TPProject Manager/Stream LeadQLD
- CCPortfolio Coordinator / Administrator - BrisbaneNSW
- CCFront-End DeveloperNSW
- FTSenior Business Analyst - Corporate SuperOther
- CCSenior Business Analyst - Supply Chain / LogisiticsVIC
- FTSignalling Project ManagerOther
- FTFull Stack Developer - Permanent OpportunityNSW
- FTWeb Application Developer - NodeJSOther
- FTBusiness Intelligence DeveloperNSW
- FTBusiness Intelligence DeveloperNSW
- CCHadoop DeveloperQLD
- FTJava DeveloperWA
- TPProcurement ManagerACT
- FTHFC EngineerOther
- TPSystems AdministratorQLD
- FTProject Manager - DatawarehouseACT
- FTWFM Support Analyst (Kronos)Other
- CCHogan Technical Consultant - BrisbaneNSW
- FTEnterprise ArchitectOther
- FTDocument ControllerSA
- FTHR Payroll Officer - Government background onlyOther
- FTSenior Consultant - .NET DeveloperQLD