Source Four® is compact and economical size. The smaller-scale Source Four jr™ uses the same technology that made the standard Source Four famous. That means unsurpassed imaging and beam quality. Source Four jr - Compared to many conventional 650W and 1000W ellipsoidal spotlights, Source Four jr's 575 watts still deliver an even brighter light and offer the flexibility of multiple HPL lamp options and interchangeable lenses. Source Four jr Zoom - Field-angle versatility of a zoom ellipsoidal in a compact package. If you're looking for the field-angle versatility of a zoom ellipsoidal with the affordability and design of a smaller fixture, then you're looking for the Source Four jr Zoom.