1983 Mercedes-benz 300d Base Sedan 4-door 3.0l on 2040-cars

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Automakers' sound systems: Crank it, don't yank it

Years ago, one of the first things most music lovers did after buying a new vehicle was drive to an aftermarket stereo shop to get the crappy stock components swapped for better gear. And you'd typically get not only better sound but also more bang (and boom) for your buck. But in the past decade or so, the overall quality of OEM audio has dramatically increased, while car electronics became more complex, removing the incentive for most new vehicle owners — and all but the most hardcore DIYer — to start from scratch. In 2010, I did a comparison of the average costs for OEM electronics vs. similar offerings from the aftermarket, and back then automakers' stock premium systems were by far the best bargain — and are probably an even better value now. The premium 14-speaker, 1,200-watt JBL system in the all-new 2019 Toyota Avalon is a prime example of this trend. It's standard on the top two Limited and Touring trims and is available as a $680 audio upgrade on the XLE and XSE. I doubt you can even buy 14 speakers and 1,200 watts of amplification from the aftermarket for 700 bucks, much less have it all installed. And because the system is bundled with Toyota's Entune infotainment system, Apple CarPlay and a surround-view camera, removing the head unit means you would likely lose these features. Another advantage of OEMs and their audio partners is they can design the car around the audio system. In the past, automakers would typically place speakers where convenient for packaging, not for optimal sound reproduction, and audio engineers were forced to compromise. But as with the Avalon's premium JBL audio system, this is starting to change. At a recent behind-the-scenes peek for media into the process of developing the system, Toyota and Harman engineers delved into the minutia of sealing the inner panel of the front doors to create an enclosure for 6x8-inch woofers, making space in the pillars for JBL horn tweeters and extensively measuring the acoustic properties of the interior to tune the sound to the space. I'm met some creative and skilled car stereo installers, but none with a degree in psychoacoustics. The system is also the first to feature Quantum Logic Surround that creates a multi-channel listening experience from two-channel sources. And it includes Harman's Clari-Fi processing that "rebuilds key details lost" in compressed audio formats used by streaming music services and MP3s.

Lewis Hamilton has Vettel in crosshairs at Canadian Grand Prix

MONTREAL - The Canadian Grand Prix has been a happy hunting ground for Lewis Hamilton, and he will look to bag a sixth career win on the island circuit on Sunday to refuel his hopes of another Formula One drivers title. With 14 races remaining on the calendar, it is far from do-or-die for Hamilton, but the pressure is mounting on the Briton and Mercedes with arch rival Sebastian Vettel and Ferrari threatening to widen the gap at the top of the championship standings. Only Michael Schumacher has won the Canadian Grand Prix more times (seven), and Hamilton intends to close the gap further in Montreal as the race marks its 50th anniversary. Hamilton needs to do so, at the scene of his first ever Formula One victory a decade ago, to reel in Vettel after the German led a Ferrari one-two in Monaco and powered 25 points clear. "Montreal has been a great hunting ground for me in the past, and I plan for it to continue," the triple world champion told reporters. With five wins and five poles from previous visits to Quebec, Hamilton would normally be the favorite, but champions Mercedes are no longer the dominant team. "The Ferrari seems to work everywhere. The next 14 races are going to be very, very difficult," he said after struggling to seventh place in Monaco. "They have had arguably the strongest car all year. They look like our car which just worked everywhere last year." The race will also mark the return of twice world champion Fernando Alonso to the Formula One grid after the Spaniard skipped the Monaco Grand Prix last month to chase IndyCar glory at Indianapolis 500. Alonso turned in an impressive performance at the famed Brickyard, qualifying fifth fastest and running at the front but late in the race suffered a familiar fate with his Honda engine giving up. Little has changed at struggling McLaren during Alonso's brief sabbatical with the team still hampered by an uncompetitive Honda engine. There is plenty of reason to party around the Circuit Gilles Villeneuve this week with the city celebrating its 375th anniversary, Canada its 150th birthday and the Canadian Grand Prix its 50th. Williams driver Lance Stroll will be hoping to contribute to the party atmosphere. For the first time since the days of 1997 world champion Jacques Villeneuve, the Canadian Grand Prix will have some true home interest with teenager Stroll on the starting grid for Williams.

Mercedes spotted testing new GLC-Class

Mercedes is set to replace its GLK-Class compact crossover with the new GLC, and here's our best look at it yet. Previewed in concept form with a sloping coupe-like roofline in Shanghai and previously spotted wearing swirly camouflage (in AMG form, no less), we can easily see from these latest spy shots that the GLC will ditch its predecessor's straight edges for a far more rounded form. Sort of like a C-Class, but taller. That, we gather, is kind of the point, as Mercedes moves to realign its crossovers with its sedan, wagon, coupe and convertible counterparts: GLC with C-Class, GLE (nee M-Class) with E-Class and GLS (GL) with the S-Class. And of course the GLA with the CLA and A-Class. Look for the new GLC to debut in June, soon to be accompanied by a chopped-roof version and offering similar powertrain options as the latest C-Class sedan. Hopefully the range will eventually include an AMG performance version, too. Related Video: