Case Study: Car Audio Head Unit Supply for a dealership group in Central America
Car Audio Head Unit for A dealership group in Central America
A dealership group came to us with a car audio head unit programme for Central America. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.
The starting point
- Inconsistent hardness between lots
- Premature wear on the first batch
- A specification nobody had written down

What was specified
| Part | Car Audio Head Unit |
|---|---|
| Client | A dealership group |
| Market | Central America |
| Volume | 50,000 pieces across 3 specifications |
| Base material | High Density Foam |
| Sampling rounds | 4 |
| Delivery window | 10 weeks from PO to ex-factory |
| Compliance | RoHS |
How it was resolved
- The specification was rebuilt around High Density Foam and the tolerance locked before bulk.
- A pre-production sample was approved and kept as the golden reference.
- Production ran with in-line inspection and a mid-run photo report.
- Cartons were packed to the client's own barcode and ratio specification.
- Documentation shipped with the goods instead of after them.

Result
- 50,000 pieces delivered inside the 10-week window.
- Unit cost held within 3.0% of the original quotation.
- Inspection-related rejection stayed under 1.0%.
- The specification is on file, so reorders reproduce the approved sample.
What we would repeat
Approve a pre-production sample made from the actual bulk material. Substitute material behaves differently in service.
Planning something similar?
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.



