Matrix DE HPS 400W Lamp

What This Lamp Is

The Matrix DE HPS 400W is the factory-spec double-ended high-pressure sodium lamp used in Matrix's Hybrid 1000W fixture — the 400W HPS channel that delivers the red-dominant spectrum and radiant heat that the Hybrid platform is built around. It is also compatible with other Matrix DE fixture platforms that accept a 400W DE HPS lamp.

Double-ended HPS lamps connect at both ends of the arc tube rather than through a single mogul base. That two-point connection allows the arc tube to operate at higher internal temperatures, which increases photon output and maintains spectral stability more consistently over the lamp's life compared to single-ended HPS. The 2100K color temperature places this lamp's output deep into the red and orange spectrum — the range most relevant to flowering-stage photosynthesis and flower development.

This is a consumable part. Rated life is approximately 10,000 hours, but lumen output degrades before that threshold is reached. In commercial flowering rooms running 12-hour photoperiods, operators should track lamp hours and replace on a defined schedule rather than waiting for visible failure.

Who Needs This Lamp

This lamp is specifically for operators running Matrix Hybrid 1000W fixtures or other Matrix DE platforms that use the 400W double-ended HPS channel. It is not a universal DE lamp — DE HPS compatibility is format-specific and operators should confirm fixture compatibility before ordering any DE replacement lamp.

The typical buyer is a licensed cannabis or hemp cultivation operation that runs Matrix Hybrid fixtures across a flowering room and needs to maintain a standing supply of replacement lamps for scheduled changeouts. High-canopy commercial rooms running multiple fixtures will turn lamps over on a regular cycle; having replacement stock on hand prevents unplanned downtime during a flowering run.

Multi-site operators and master growers managing several rooms are the primary audience. One-off lamp failures mid-cycle are disruptive — the correct approach is a fixed replacement interval (tracked in a grow room log) so lamps are swapped proactively, during a dark period, before output has degraded to a level that affects yield.

Double-Ended HPS and Lumen Depreciation — What Operators Need to Know

HPS lamps — single-ended and double-ended alike — do not fail sharply. Output falls gradually as the arc tube ages. By the time a lamp reaches its rated hour threshold, lumen output has typically declined 20–30% from initial values. In a tight flowering room where PPFD targets are dialed, that depreciation directly affects canopy density and bud weight across later cycles.

The DE format maintains output more consistently over lamp life compared to single-ended HPS, but depreciation still occurs. Commercial standard practice is to replace DE HPS lamps at or before 10,000 hours. At a 12-hour flowering photoperiod that works out to roughly 2.3 years of continuous use — but many commercial operations replace on shorter intervals (annual or seasonal) to keep PPFD targets consistent across all zones.

Tracking lamp hours per fixture in a grow room log is the simplest way to manage this. Stagger changeouts across rooms rather than replacing all lamps simultaneously to avoid sudden whole-facility output changes.

Ordering and Fit Notes

SKU 10-010201-025 is the Matrix-specified replacement lamp for the 400W DE HPS channel. Always verify that your fixture platform accepts a 400W DE HPS lamp — the Matrix Hybrid 1000W uses a 400W DE HPS as one of its three light sources (alongside the 560W LED and 40W far-red channel), and this lamp is the correct field-replacement for that HPS channel.

DE HPS lamps require DE-specific fixture hardware. This lamp will not fit single-ended (mogul base) reflectors or ballasts. If you are ordering for a Matrix DE 1000W fixture — which ships with a 1000W DE HPS lamp — confirm whether you need the 400W or 1000W replacement before submitting a quote request.

HSC supplies this lamp as a consumable accessory to commercial accounts running Matrix fixture platforms nationwide. Request a quote for unit pricing on single lamps or case quantities for scheduled facility-wide changeouts.