Zealth Audio: Great American Speakers

3d1When I was doing research for one of my latest books, Home Theater for the Internet Age, I knew I couldn’t get lazy with the Speakers chapter. So I put a lot of time into the topic. In the process, I discovered some neat, small speaker companies.

Most of the experts I truly respect in the areas of hi-fi and home theater agree: You should put the bulk of your budget into speakers (for a wide variety of reasons that I won’t go into here).

One of the more unique and affable companies I encountered during my research was Zealth Audio. Based in San Diego, Zealth isn’t your father’s speaker. To learn more, enjoy the following excerpt from my book.

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Curt Robbins


Zealth Audio

If you’re one of those people who likes to talk about supporting the little guy, but ends up plunking down your hard-earned on speakers from a big international corporation, you might want to consider your options. Independent manufacturers, some of which are as small as one full-time craftsman working with one or two part-time assistants, are increasingly common. Fortunately, some of these little guys can also save you significant money while putting a hand-crafted speaker in your living room that’s actually attractive and sounds great.

One such option is Zealth Audio, a small operation in San Diego that hand-builds four models of multi-directional floor standing loudspeakers, all of which are designed to enhance surround sound—although they work well in stereo applications as well. Like Mirage, Pinnacle, and Axiom, Zealth stands out in the sometimes copycat world of direct-firing loudspeakers by offering a unique design that caters to the realities of modern surround sound.

What truly differentiates the speaker-design brainchild of company founder and sole full-time employee Kevin Nelson is the fact that it’s designed to work in a two-channel stereo sound system with as few as one—yes, that’s right, one—speaker. Zealth employs a patented Cross-Fire Imaging Technology, which comprises both front-firing and 45-degree up-firing Picture-002drivers. Zealth also sells a three-way speaker that adds a side-firing subwoofer.

Nelson claims that all of his configurations “enhance your existing surround sound-enabled investment and bring home theater sounds to breathtaking life,” referring to the experience as “multi-dimensional sound immersion.” Nelson is so confident in the immersive quality of his speakers, in fact, that he says you can replace a conventional five-speaker system with only two of his models. When I asked him if one could also avoid the expense of a subwoofer by going with his top-of-the-line side-firing Gold Series model, he said yes.

If you’re as curious about Zealth as me, check out the company’s entry-level ZAL-22 ($450 a pair), the midgrade ZAL-36T ($890 a pair), or the big daddy ZAL-DLX Gold Series, a 36-inch tall model featuring the aforementioned side-firing 10-inch subwoofer ($1,450 a pair). Nelson is also introducing a new faux leather finish ZAL36 Slimline model that will be priced at $980 a pair.

All Zealth speakers are made-to-order, hand-built from American materials, and available in more than a dozen beautiful wood finishes (a nice alternative to the trendy high-gloss piano finishes that are all the rave—and one advantage of Zealth’s small-scale fulfillment system). The company produces muscular models that, according to veteran audiophile reviewer Steve Guttenberg, sound as good as they look.

Check out Zealth. You’ll not only be supporting the little guy, but also getting a killer set of very affordable speakers. The ZAL-36T is what I plan to use in a new two-channel system dedicated to music.

[According to Molly Stillman at rAVe Publications, who interviewed Nelson for her blog in April 2014,Speaking with Kevin was truly a pleasure and an honor. He was extremely humble, very honest, funny, witty, and clearly very smart. I think the industry could use a few more Kevin Nelsons.” You can read Ms. Stillman’s blog post regarding Zealth Audio here.] 


Curt Robbins is author of the following books from Amazon Kindle:

You can follow him on Twitter at @CurtRobbins, read his AV-related blog posts at rAVe Publications, and view his photos on Flickr.

Understanding Home Theater Speakers: Part 2

3d1Speakers are arguably the most important part of any home theater setup. They’re certainly where one should invest the bulk of one’s money. You’ll keep good speakers a lot longer than any other home theater gear, especially AV receivers, disc players, and streaming media boxes.

Also check out the previous blog post, Understanding Home Theater Speakers: Part 1. The following is an excerpt from my Amazon Kindle book Home Theater for the Internet Age.

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Curt Robbins


Center Channel

The center channel, as you’ve already learned, is dedicated to TV and movie dialog (it’s nice to hear the sound coming from where a character’s mouth appears) and enhancing the overall immersive quality of music emanating from the speakers facing you. As mentioned, it’s highly advised that your center is from the same series as your front mains. More powerful center channels feature more drivers. Thus, a basic config might be a single midrange or full-range driver, while a more sophisticated example would feature a couple of woofers, one or more midrange drivers, a tweeter, and maybe even ports.

It should be noted that most high-resolution surround sound music formats, such as SACD, and DVD-Audio, all give music publishers the ability to record a center channel as part of a song or album. (See the Disc-Based Music chapter for more information regarding these high-resolution music formats.) Center channel speakers range in cost from under $100 to several thousand.

Subwoofer

As you’ve already learned, a subwoofer is simply a speaker dedicated to the lowest audio frequencies, which you can literally feel in addition to hear. If you really want to shake the house or wake the neighbors, a large, powerful sub can do it. Barry White should have owned a sub company.

A sub is unique in that, unlike your other speakers, it’s a powered unit (300 to 800 watts is common). Don’t dismiss the capabilities of a high-quality 10, 12, or even 15-inch subwoofer. For movies especially, it will become one of your favorite speakers (and something you’ll want to turn down when the kids are asleep).

Omnidirectional

The subwoofer is also unusual among other speakers in that it’s mostly omnidirectional, meaning where it resides in the room and where it’s pointed (the direction in which it fires) are much less important than with your other speakers. This is nice for tucking it discretely behind a sofa or under an end table. Some models, like the uniquely slim $1,400 Paradigm MilleniaSub and the $2,000 REL Habitat1, are specifically designed for narrow spaces, such as under a sofa.

Most subwoofers feature a digital amp. While models with Class A/B analog amps are available, they’re less common. Incorporating a digital amp allows a model to be smaller, consume less energy, and perform with greater efficiency. Just to confuse things, there are also hybrid varieties that employ both analog and digital circuitry at a variety of prices and quality levels. Like other speakers, some subs feature relief ports, a nice addition because ported subs can produce greater output. Subs that aren’t ported are called sealed (just like headphones). The PB series from SVS is a good example, featuring models with between one and three ports each, priced from $500 to $2,000.

Driver Configs & Second Helpings

Like regular floor standing and surround speakers, subwoofers can feature one or more drivers that fire in a variety of directions. The most common configuration is side firing (like my 10-inch, 500-watt, single-driver sealed B&W ASW700) or down firing (like the 10-inch, 150-watt REL T-5). Klipsch’s best sub, part of its Palladium Series, features two 12” drivers powered by 1000 watts that are side firing and 90 degrees separated (this sub is arguably overkill for most rooms). The majority of subs feature a single side-firing driver that’s between 10 and 15 inches in diameter and commonly powered by 500 watts.

As you’ve learned, some home theater hobbyists add a second sub to their home theater, creating a more balanced low frequency experience with even greater impact. However, in dual-sub environments, placement is critical; typically, you don’t simply stack them on top of each other. The debate between one big sub or a couple of smaller units will never cease in the audiophile world. In the end, it’s determined by your room and budget.


Curt Robbins is author of the following books from Amazon Kindle:

You can follow him on Twitter at @CurtARobbins, read his AV-related blog posts at rAVe Publications, and view his photos on Flickr.