SurgeFX SF-SP90 Gobo LED Moving Head Light

What Is a Spot Moving Head?

A spot is a lighting fixture designed to project a focused circle of light — and, critically, patterns — onto surfaces. Unlike a beam fixture (which creates a visible shaft through haze) or a wash fixture (which floods an area with soft, even light), a spot's job is to put something specific on a wall, floor, stage, or performer. That "something" is usually a gobo — a metal or glass template placed in the light path that shapes the beam into a pattern. The SF-SP90 is a spot-type moving head with two gobo wheels, making pattern projection its primary strength.

What Are Gobos?

The word "gobo" comes from "goes before optics" — it's a template (typically a thin metal cutout or etched glass disc) that sits in the light path between the source and the output lens. Light passes through the cutout portions and is blocked by the solid portions, projecting the pattern outward. Common gobo patterns include stars, circles, breakup textures (organic shapes that simulate dappled light or foliage), geometric lines, dots, abstract shapes, and custom designs like logos or monograms. The SF-SP90 carries 14 gobos across two separate wheels — one of the most generous gobo selections in its class.

Dual Gobo Wheels — 14 Patterns

Static Gobos — Quick Pattern Selection

The static wheel's 8 gobos are fixed in place — the wheel rotates to position each gobo in the light path, but the gobo itself doesn't spin. These are your go-to patterns for fast selection: breakup textures, geometric shapes, and utility patterns. "Gobo shake" rapidly oscillates between adjacent positions, creating a vibrating stutter effect.

Rotating Gobos — Dynamic Spinning Patterns

The rotating wheel's 6 gobos are the showpieces. Each gobo spins individually on its own axis — a star pattern rotates like a pinwheel, a line pattern sweeps like a fan, a breakup pattern creates organic movement like light through water or wind-blown leaves. Rotation speed and direction are DMX controllable, from barely perceptible slow turns (atmospheric) to fast kinetic spinning (high-energy). This is the effect that makes spot fixtures essential — nothing else in a lighting rig creates the same dynamic, organic visual movement.

Dual-Wheel Layering

Because the SF-SP90 has two separate wheels in the light path, you can engage a gobo from each wheel simultaneously. The two patterns overlay, creating a combined projection that neither gobo produces alone. A breakup pattern from the static wheel combined with a slow-rotating geometric from the rotating wheel creates a complex, evolving texture with both static structure and organic movement. This dual-wheel capability is what separates a two-wheel spot from single-wheel fixtures that can only show one pattern at a time.

The Optical Pipeline

The SF-SP90's light path runs: 90W LED source → color wheel → static gobo wheel → rotating gobo wheel → prism → focus optics → output. Each element is independently DMX controllable, and effects stack downstream — color applies to gobo patterns, prism multiplies colored gobo projections, and focus sharpens or softens the result at any throw distance.

Color Wheel — 7 Colors + White

7 colors covers the essential professional palette: typically red, blue, green, yellow, magenta, orange, and a warm-white correction filter. Half-color positioning between adjacent filters effectively doubles the practical color count. Every color applies to whatever gobo is active — a blue star, a red breakup, a green geometric — so 7 colors × 14 gobos gives you nearly 100 unique color/pattern combinations before you even touch the prism.

3-Facet Rotating Prism

The 3-facet prism takes whatever the SF-SP90 is outputting — a colored gobo, an open beam, a combined dual-wheel pattern — and splits it into three rotating copies. In spot mode projected onto a surface, this creates three overlapping gobo patterns sweeping in a triangle. When used with haze present, the prism creates a triangular fan of mid-air beams. The visual effect is dramatic and immediately recognizable as professional production lighting.

Beam Angle — 5° / 13°

The dual beam angle gives you two operating modes from one fixture. At 5°, the SF-SP90 produces a tight, punchy spot that throws gobo patterns sharply at distance — ideal for projecting patterns on far walls or highlighting a performer with a focused circle. At 13°, the beam opens wider, covering more surface area with gobo textures — better for atmospheric wall washes, broader stage coverage, or closer-throw applications where you want the pattern to fill a larger area.

Electronic Focus

Electronic focus adjusts the sharpness of gobo projections at different throw distances. Closer throws need different focus than distant projections to keep patterns crisp. The focus is DMX controllable, so you can adjust sharpness during a show — and intentionally defocusing a gobo creates a soft, blurred version of the pattern that works beautifully as abstract texture rather than a sharp shape.

Effects Combinations

Complete Specifications

Light Source Detail

What the SP90 Is (and Isn't)

The SF-SP90 is a spot fixture — its primary job is gobo projection and focused pattern lighting. It produces a concentrated output designed to project crisp patterns onto surfaces. It is not a wash fixture (no frost filter, no wide diffused coverage) and it is not a high-powered beam fixture (90W is optimized for indoor spot work, not long-throw aerial beams). Think of it as a precision tool: where larger BSW fixtures try to do everything, the SP90 focuses on doing gobo projection and spot highlighting exceptionally well for its price point.

Applications

• Mobile DJ — Lightweight, portable, and loaded with 14 gobo patterns. Run in auto or sound-active mode for instant visual effects. The 6-channel basic mode makes simple DMX setup fast.
• Weddings & Social Events — Project textured breakup patterns in warm colors across walls and ceilings. Slow-rotating gobos create elegant, organic movement. CRI 95 ensures everything photographs beautifully.
• Houses of Worship — Gobo textures add visual depth to stages without overwhelming a service. Rotating water/fire effects for thematic moments. CRI 95 is ideal for IMAG camera work.
• Small-to-Mid Venues — Bars, clubs, restaurants, and lounges benefit from gobo texture on walls and surfaces. Prism effects for dance floor energy. Auto-run for set-it-and-forget-it ambient lighting.
• Theater & Dance — Breakup gobos create scenic texture (foliage, water, abstract). Precise 5° spot for performer highlighting. Dual gobo layering for complex scene-setting.
• Corporate Events — Pattern projection transforms blank venue walls into styled spaces. Colored gobos set brand-appropriate atmosphere without elaborate scenic design.

DMX-512 Control — Dual Channel Modes

The SF-SP90 offers two DMX modes via standard 3-pin XLR connectors (in/out for daisy-chaining). Set the DMX address, channel mode, and operating parameters from the onboard LCD display.

Extended Mode — What 18 Channels Controls

16-Bit Pan/Tilt Precision

Each movement axis uses two channels (coarse + fine) for 16-bit resolution — 65,536 positions across the full range. This eliminates the visible "stepping" that occurs with 8-bit control during slow movements. When slowly sweeping a gobo projection across a wall, 16-bit ensures perfectly smooth, fluid motion without jumps or stutters. The difference is clearly visible to the audience and on camera.

DMX Universe Planning

In extended mode at 18 channels: 28 SP90 fixtures per DMX universe (28 × 18 = 504 of 512). In basic mode at 6 channels: 85 fixtures per universe (85 × 6 = 510). The basic mode is particularly useful for large multi-fixture setups where you want simple control over many units without running out of DMX addresses.

Non-DMX Control Modes

Frequently Asked Questions

What makes this a "spot" vs a "beam" or "wash"?

A spot projects focused light — and patterns — onto surfaces. You see the result on a wall, floor, or performer. A beam projects a shaft visible mid-air through haze (you see it in the air, not on a surface). A wash provides wide, soft, even coverage with no hard edges. The SF-SP90 is a dedicated spot: its dual gobo wheels, electronic focus, and concentrated beam angles are all optimized for projecting crisp patterns onto surfaces. It can produce some beam effects through haze (especially with the prism), but pattern projection is its primary job.

Do I need haze or fog?

For gobo projection (spot work) — no. The patterns are visible on whatever surface they hit. However, if you want to see the beam shafts in mid-air (especially prism effects), you'll need some atmosphere. Light haze adds visual depth to any spot fixture by making the beam path partially visible, which adds a professional look even when the gobo patterns themselves are the main feature.

How does this compare to the SF-SB100 or SF-BM200?

The SF-SB100 is a dedicated beam fixture (tight aerial beams through haze, dual prism, no gobos for spot work). The SF-BM200 is a 3-in-1 BSW hybrid (beam + spot + wash with motorized zoom). The SF-SP90 is a dedicated spot fixture focused on gobo projection at an accessible price point. Choose the SP90 when gobo effects and pattern projection are your priority and you need a compact, affordable, easy-to-use fixture.

Is 90W bright enough?

For indoor spot work in controlled lighting environments, 90W is well-suited. At 1,000 lumens focused through a 5° beam, the SP90 produces a concentrated spot that reads clearly on surfaces in dimmed or dark rooms — clubs, churches, event halls, DJ setups, theaters, and similar venues. It's not designed for daylight environments or outdoor use. In its intended use case (indoor gobo projection in professional lighting conditions), 90W delivers a clear, vivid image.

What's the difference between 6-channel and 18-channel mode?

6-channel (basic) consolidates controls — pan/tilt, color, gobo, and dimmer are available but some functions are grouped or simplified. Good for small controllers, limited DMX universes, or when you just need basic operation. 18-channel (extended) gives you independent control over every function: 16-bit pan/tilt, color, both gobo wheels separately, individual gobo rotation, prism, focus, strobe, speed, and macros. Use extended mode when you want full creative control.

Can I use custom gobos?

The rotating gobo wheel carries individually rotating gobos that may be replaceable depending on the gobo holder design — check the gobo slot size against standard gobo dimensions. The static wheel's gobos are typically fixed. For dedicated custom logo projection, BSW fixtures with confirmed-replaceable rotating gobos (like the SF-BM200) may be a better choice.

How many can I run per power circuit?

Each unit draws approximately 120W at full output. On a 15A/120V circuit (1,800W available): up to 14 fixtures with headroom (14 × 120W = 1,680W). On a 20A circuit (2,400W): up to 19 fixtures. The low power draw is a major practical advantage — you can run a significant lighting rig off minimal power infrastructure.

Is it outdoor rated?

No. IP33 is an indoor rating. Not waterproof. Use indoors or under fully covered/tented outdoor stages only.

Can I superimpose gobos from both wheels?

Yes. Both gobo wheels sit in the light path simultaneously. Engage a gobo from each wheel and the patterns overlay. This is one of the most creative features of a dual-wheel fixture — experiment with different combinations to find layered textures that work for your shows.

Setup Tips

Focus at Sound Check, Not During the Show

Electronic focus adjusts gobo sharpness at different throw distances. Take 5 minutes during setup to find the right focus value for your primary projection surface and note the DMX value. A crisp gobo at the right focus looks 10× more professional than a soft, blurry projection. This single adjustment transforms the visual quality of your entire show.

Slow Rotating Gobos = Elegance

The most common mistake with rotating gobos is spinning them too fast. A breakup gobo rotating at 1–2 RPM in a warm color creates beautiful, organic movement — like light through trees or rippling water. The same gobo at 30 RPM is chaotic and distracting. Save fast rotation for deliberate high-energy moments. Default to slow. The audience should feel the movement, not be overwhelmed by it.

Color Temperature Matters

The 7-color wheel likely includes a CTO (color temperature orange) filter. Using CTO with gobo patterns creates warm, natural-looking projections that feel organic and inviting. Cool-white (open) with geometric gobos creates a modern, sharp look. Match your color temperature to the mood: warm for weddings, galas, and worship; cool for clubs, corporate, and high-energy events.

Prism as a Peak-Moment Tool

Don't leave the prism running all night. Use it as an accent — engage the prism during musical drops, reveals, transitions, or climactic moments. When the prism kicks in after an extended stretch of single-beam gobo projection, the sudden multiplication of beams hits the audience with tangible visual impact. Restraint makes the effect more powerful.

Sound Mode for Simple Gigs

For house parties, small DJ gigs, and casual events where you don't have time to program DMX, sound-active mode is genuinely useful. Point the SP90 at a wall or dance floor, select sound mode, and let the fixture react to the music. It won't be as precise as programmed DMX cues, but it provides dynamic, reactive lighting that responds to the room's energy with zero setup time.

Pairs Well With

• Haze FX — Light haze adds depth to gobo projections and makes beam paths visible for prism effects.
• Fog FX — Dense fog paired with the prism creates dramatic mid-air beam reveals.
• Cold Spark FX — Colored gobo projections over spark fountains for layered visual impact.
• CO₂ FX — CO₂ bursts catch the spot beam, creating instant dramatic atmosphere.
• All Stage Lighting — Pair with wash fixtures for general illumination while the SP90 handles gobo textures and spot accents.