The Challenge: The Compliance Problem Voice AI Isn't Talking About

2X builds compliant, production-grade conversational voice AI for lead-heavy B2B and B2C businesses. The core problem they solve is simple: businesses are losing revenue and burning payroll because they can’t reliably get to every lead or call in real-time. 2X automates these high-volume customer conversations end-to-end: outbound calling, answering inbound, qualifying and booking, routing, and following up. Their customers span home services, legal, healthcare, tax, and financial services. In these industries, speed-to-lead and call coverage drive revenue directly. 

But there's a nuance most AI voice platforms don't talk about — and that the biggest enterprise buyers always ask about first.

Under FCC/FTC frameworks, the Telephone Consumer Protection Act (TCPA) considers an outbound call "abandoned" if the person answers and isn't connected to a representative within two seconds of their completed greeting. Campaigns are measured against a 3% maximum abandonment rate over a 30-day period. Fines run $500 to $1,500 per call. For platforms making hundreds of thousands of calls daily, non-compliance is a real litigation and financial risk. And most voice AI providers aren't built to clear the bar.

2X Solutions Founder Kevin DeMeritt knows the problem firsthand. He spent 37 years running Lear Capital, a precious metals firm that processed nearly $4 billion in business through hundreds of thousands of leads. When he tried adopting voice AI from another provider, the experience was a wake-up call: no TCPA compliance, no security infrastructure, no way to operate at scale without exposing the business to lawsuits. So he built 2X to solve the problem himself.

"Every time we're in front of a company who's at substantial enterprise scale, the first question they have is: is this compliant?" said Kevin DeMeritt, CEO of 2X Solutions. "With exposure to lawsuits, there are millions of dollars on the line."

Why 2X Chose Cartesia

2X evaluated every major TTS provider. The bar wasn't just voice quality. It was whether the platform could keep 2X within TCPA compliance boundaries while sounding natural enough to earn a prospect's trust in the first second of a call.

The results weren't close. Other providers were unusable for compliant outbound at scale: they operated at 500-900ms latency, uncomfortably close to the two-second limit once the full voice pipeline was stacked. 

With Cartesia, latency dropped to sub-100ms and the abandoned call rate was slashed from 3.4% to under 1.25%. Cartesia's low-latency streaming delivers audio the moment a recipient answers, keeping 2X's platform well within the two-second window at scale — the foundation that makes compliant outbound calling possible.

"When we switched to Cartesia, we were below the TCPA 3% fairly substantially — we were at like one and a quarter percent," said DeMeritt. 

Voice quality is what won the deal: Cartesia is the voice layer that makes the agent feel natural and responsive.

“We can tune voice style by workflow, and the streaming responsiveness makes the agent feel more lifelike. For end customers, the big difference is that the interaction feels immediate and natural, which drives higher completion and lower drop-off,” said DeMeritt.

2X runs live demos — not pre-recorded, not through a browser. Prospects enter their phone number and name, and the AI calls them in real time on their actual phone, using Cartesia voices. That live test has directly won 2X business against competitors whose demos fell apart under real-world telephony conditions.

"Some people have gone to salespeople and said: hey, can I talk to Mary? She was so nice. And that was actually the AI," said DeMeritt. "The voices make a difference in that first moment. It's the first impression for our company."

How Cartesia Powers 2X's Voice Agents

Compliant Outbound at 130,000 Calls Per Day

2X handles approximately 130,000 calls per day — nearly 3 million per month — and is growing at 10% monthly. Every one of those outbound calls needs to deliver a response within the two-second TCPA window, consistently, without quality degradation as concurrency scales.

Cartesia's sub-200ms latency gives 2X substantial headroom within the compliance window — turning what was previously a razor-thin margin into a comfortable buffer. That reliability is what wins enterprise deals.

Personalized Voicemails That Drive Callbacks

For many of 2X's customers, up to 50% of their callbacks come from voicemails. 2X uses Cartesia's voice cloning and natural delivery to leave personalized voicemails that say the prospect's name in the same voice that handles the live call — maintaining brand consistency across every touchpoint.

The result: a 3-5% lift in callback rates across their customer base compared to generic voicemails. Combined with a pre-call texting strategy that alerts prospects 3-5 minutes before the call, 2X sees a 7-15% increase in connected calls overall.

Live Demos That Win Deals

Unlike most AI voice companies who send pre-recorded demos — trimmed, polished, and optimized for controlled conditions — 2X sends live ones. That live test, powered by Cartesia voices, has directly won 2X business against competitors whose demos couldn't survive the transition from computer audio to real telephony.

"We picked up several customers who went and asked a competitor to send them a live demo like we did, and it fell apart," Kevin said. "We always use Cartesia voices for our live demos."

Results: Compliance and Conversion at Scale

Since switching to Cartesia, 2X has delivered measurable improvements across compliance, conversion, and coverage:

• Abandoned call rate dropped from 5-6% to under 1.25%, well below the 3% TCPA threshold

• Hang-ups before transfer reduced from 3.4% to under 1%, putting more leads in front of human reps

• Latency reduced from 500-900ms to sub-100ms — providing substantial headroom within the two-second TCPA compliance window

• ~3 million calls per month at 130,000 calls per day, growing 10% monthly with no quality degradation

• 3-5% lift in voicemail callback rates through personalized, voice-cloned messages

• 7-15% increase in connected calls through pre-call texting combined with faster, more natural voice engagement

Looking Ahead

2X is built on a modular architecture. As the platform scales, Cartesia's streaming TTS, voice cloning, and granular voice controls are the foundation that make growth possible without degrading the end-user experience or risking compliance.

"Voice AI isn't a demo anymore — it's production software," said DeMeritt. "When you combine a fast, expressive voice layer with workflow rigor and measurable outcomes, you can deliver a customer experience that scales revenue."