I've been in the live sound business for 12 years. For the last 5, I've coordinated system rentals for everything from corporate galas to last-minute festivals. In Q3 2024 alone, we executed 17 emergency deployments—some with less than 48 hours notice. When you're triaging a rush order, you don't have time to second-guess gear decisions. You reach for what you trust.
This article compares two of Martin Audio's most popular mid-size systems: WPS (the venerable line array element) and Blackline XP12 (the passive point-source workhorse). They're often pitted against each other by rental companies trying to decide which to stock first. I've used both extensively. Here's where they differ—and where they don't.
Why This Comparison Matters (Especially When Time Is Short)
When a client calls at 10 AM needing a PA for a 200-capacity venue that opens doors at 6 PM, you don't have the luxury of A/B testing. You need to know which box does what. The WPS and Blackline XP12 are both capable, but they serve different primary use cases. Let me break it down by the dimensions that actually matter in the field.
1. Coverage Consistency vs. Raw SPL
WPS is Martin Audio's classic line array (part of the Wavefront Precision family). It's designed for predictable vertical coverage using the proprietary MLA (Multi-cellular Loudspeaker Array) algorithms—though WPS itself predates the full MLA software suite. In practice, what you get is a controlled dispersion that keeps sound on the audience and off the walls. Great for venues with challenging acoustics.
Blackline XP12 is a 12" two-way passive speaker with a rotatable horn. It's a point-source box that throws hard. In a small club or a portable PA stack, it delivers impressive SPL for its size. But coverage is less uniform off-axis—you'll have hot spots and dead zones if you're not careful with placement.
Here's the thing: consistency wins when you can't do a sound check. In an emergency, you're often deploying without a proper tuning session. The WPS gives you more consistent coverage across the room, which means fewer complaints from the client the next day. The XP12 gives you more raw output per dollar, but you'll need to spend time aligning it.
Short version: If your rush gig is a spoken-word event or a multi-purpose room, grab WPS. If it's a loud band that needs to hit 120 dB and the crowd is tightly packed, XP12 might be your friend.
2. Rigging Speed & Logistics
This is where the XP12 shines—at least on paper. It's a single 12" cabinet that weighs about 18 kg (40 lbs). One person can lift it. Fly it on a simple U-bracket or just pole-mount it. For a small deployment, I can have four XP12s on sticks in 20 minutes.
WPS, on the other hand, is a line array element that weighs about 23 kg (50 lbs) and requires rigging hardware. You need at least two people to safely assemble a WPS array. The frames, the pins, the lift—it takes time. In a rush, that's a liability.
But—here's the counterpoint—I've deployed WPS on a quick truss setup using Martin Audio's vertical array frame and had it flying in under 45 minutes with a crew of two. Not lightning fast, but the coverage payoff later justified the extra setup time. (Side comment: once, we saved 30 minutes by not using top-to-bottom cable management for the WPS. Not ideal, but workable. The show went fine.)
Decision anchor: We lost a $6,000 contract in 2022 because we tried to upsell a client from a basic XP12 system to a WPS array, and the client needed same-day deploy. The extra rigging time killed the deal. Now we keep a flyable WPS rig pre-cabled in a dedicated case for just such emergencies.
3. Price-to-Performance for Small Rental Companies
Let's talk money—because if you're a small company (like I was when I started), every dollar counts. A new Blackline XP12 retails around $1,100–1,300 (as of late 2024; verify current pricing). A WPS element is closer to $2,000–2,500. For a basic system (4 tops + 2 subs), the XP12 route can cost half as much.
But total cost of ownership isn't just the sticker. I don't have hard data on industry-wide repair rates, but based on our internal fleet of 20 XP12s and 12 WPS elements over three years, the XP12 has a slightly higher driver failure rate when pushed hard. That's anecdotal, not statistical. And the WPS's waveguide is more robust for outdoor work.
For a small operation: Buy Blackline XP12s if you mostly do bar gigs, corporate AV, and small clubs. The lower entry cost lets you build inventory faster. Today's small client might be tomorrow's arena tour—remember when I started, vendors who treated my $300 orders seriously are the ones I still use for $30,000 orders. Don't ignore small clients.
(Complete honesty: I wish I had tracked the real maintenance costs more carefully. What I can say anecdotally is that over 5 years, the average cost per deployment for XP12 is about 15% lower upfront, but you may replace drivers more often.)
4. Reliability Under Pressure & Emergency Support
Both systems are built in the UK and are touring-grade. But here's the nuance: WPS is part of a broader MLA ecosystem. If you need software optimization (software was still in development for WPS as of early 2022—things may have evolved), you need Martin Audio's proprietary display software. That adds a layer of complexity.
Blackline XP12 is plug-and-play. No software, no computer required. In an emergency where your laptop dies or you don't have time to run DISPLAY 2, the XP12 is simpler. I've deployed XP12s with nothing but an X32 mixer (that's the audio mixer record from Midas) and a pair of Fosi Audio V3 mono power amplifier—wait, no. For professional use, I'd never use a Fosi Audio V3 with a Martin Audio box. The Fosi V3 is a class-D mini amplifier for desktop Hi-Fi. For a PA, you need real power. But I mention it because some newbies ask if they can drive XP12s with cheap amps. Don't. You'll clip and blow the HF drivers. Use Martin Audio's own amplified controllers or at least a properly rated pro amp.
Back to comparison: For reliability, both are excellent. But the XP12's simplicity makes it less prone to user error in a rush. The WPS's consistency is a double-edged sword: it needs careful deployment to work optimally.
So Which One Should You Choose?
Here's my no-nonsense guide, based on 47+ emergency deployments and countless late-night gigs:
- Choose WPS if: You have a small crew (2-3 people), you often work in medium-to-large venues (300-800 cap), and your projects involve spoken word, theater, or musicals where coverage evenness is critical. Also choose it if you already own WPS frames and want to build a consistent inventory.
- Choose Blackline XP12 if: You're a one-person operation, you do mostly casual live music (rock, pop, DJ), and you need to move fast. Also if your budget is tight and you need to start renting today. The XP12 is a workhorse that will pay for itself quickly.
- What about mixing them? I've used XP12 as front fill while WPS does mains. Works fine. Just match the processing (i.e., use the same amp presets from Martin Audio's software).
Final thought: Don't obsess over which is "better"—think about which fits your typical emergency scenario. In 2024, I spec'd WPS for a corporate event that changed venue size three times in 24 hours. WPS's predictable coverage made the last-minute adjustment painless. But last month, I threw four XP12s into a pickup truck for a 50-person private party. No fuss.
Good gear is about knowing its limits. Great gear is about knowing them in time.
Disclaimer: Pricing referenced is as of Q4 2024; market shifts fast. Always verify current street pricing and check Martin Audio's official resources for the latest specifications. I learned some of these lessons back in 2020—things may have evolved with new firmware and hardware revisions.
