I’ve had many people ask me, “What makes a good SQ subwoofer?” I am finding that this is a sorely misunderstood topic, and the sheer lack of understanding behind the science of it is overwhelmed by the amount of strictly anecdotal evidence available. Making a decision on the purchase of a subwoofer for sound quality purposes is certainly not an easy one. The intention of this article is to serve to assist you in making that decision. I will only cover subwoofer drivers in this article. Look out for another article on enclosures. Please note, I won’t go into specific motor technologies or the presence of shorting rings and such. This is intended to be a fairly basic article to give someone a general understanding.
An SQ Subwoofer (one that is designed for sound quality) is able to reproduce a linear frequency response in a generous frequency range, while maintaining excellent transient response and transparency. Today we will look at a few features that can often be found on high-quality SQ subwoofers for mobile audio use.
Continue reading What makes an SQ Subwoofer?
Today, we have a chance to peek into GM Powertrain Global to determine how their engines are designed from the ground up. Unfortunately, I was unable to take any photos of this facility, but the information is still quite valuable.
GM Global Powertrain Headquarters is where engines and transmissions are designed, manufactured, and tested. Due to the confidential nature of this, I was unable to take photos, but what I will share is what I learned, which should be infinitely more valuable. None of the pictures would have made any sense to most people anyway.
Engine development at GM is, to put it plainly, state-of-the-art. The have perfected this to a thing of beauty, beyond just excellence and superiority. Yes, I’m referring to its competitors. GM’s Powertrain Global Headquarters is the largest and most advanced powertrain engineering complex in the world. It is the product of 30 years of planning and restructuring inside GM, and I can honestly say the future is looking blindingly bright for GM.
Continue reading General Motors Inside Look – GM Powertrain Headquarters
Back in August, I was given the opportunity to tour some of GM’s facilities to learn more about how they operate and to watch GM’s Motors being built. I received an invite for a private tour to show me what goes behind the scenes. This article shows what I saw on the first part of that tour, looking at the assembly of the 1.4L GM engines. I learned that the GM of today is nowhere near what it was yesterday, and you’re about to see why.
Continue reading General Motors Inside Look – Flint Engine Operations