For Event, AV & Hospitality Companies
The quote doesn't die. It just goes quiet.
I'm Eric Zwanenburg — founder of Castelein AV and Co-Founder of First Impact. Event, AV and hospitality companies send high-value quotes constantly. Most get no structured follow-up. Option dates expire silently. Repeat events get re-approached from memory, if at all. I build the sales system that closes that gap. My credibility is that I run one.
The Proof
I run what I build.
Castelein AV and First Impact aren't case studies. They're where the sales system gets tested first, before it goes into anyone else's business.
Castelein AV
Technical event production — audio, video, lighting, LED, streaming and hybrid. Founded and run by Eric.
- Audio
- Video
- Lighting
- Streaming
First Impact Live
Corporate events, live broadcasts, hybrid productions and international production support, delivered by one accountable team in Mexico and beyond.
- Event Production
- Broadcast
- Hybrid
- International
First Impact Distribution
Developing professional AV brands in Mexico through distribution, dealer relationships, demonstrations, training, marketing, technical support and after-sales service.
- Distribution
- Market Development
- Training
- Support
Specialized Live Production
WatchOurWedding.live
A private, professionally produced wedding livestream for the family and friends who cannot attend in person. Built on Eric's wedding-broadcast experience dating back to 2010.
A specialized brand supported by First Impact Live.
About Eric
Thirty years of building things.
One conclusion.
Hospitality taught me service. Technology taught me leverage. Fifteen years producing live events and building AV systems taught me exactly where a sales process breaks: the quote that goes out and nothing comes back. Growth needs more than a good idea. It needs a sales system that holds up when nobody's chasing it.
How I Build
The system behind the quotes that get answered.
I use CRM, automation, AI and a defined sales process to make sure a quote never goes quiet — whether it's mine or a client's. These are not disconnected services. They are the system behind Castelein AV, First Impact, and the event, AV and hospitality companies I advise.
Insights
Lessons from building in the real world.
Practical ideas about live production, international business, professional AV, automation, AI and building companies that do not depend on improvisation.
The Founder Trap: why your best employee is killing your growth
The most dangerous dependency in a service business isn't a client or a supplier. It's you.
Essay · 6 minNobody wants your software
Clients don't buy CRMs, automation or AI. They buy Tuesday evenings at home. Sell the transformation, implement the technology.
Essay · 7 minFive minutes: the new standard for follow-up
Speed-to-lead is the cheapest competitive advantage left in local services — and almost nobody has claimed it.
Anyone can try once.
Few make it hold up when it matters.
Start a conversation
One conversation — about a quote that's gone quiet, a broadcast, or a system — to see whether it's worth building properly.