Golf Simulator Glossary: Every Term in Plain English

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Every hobby has its jargon. Golf simulators have more than most. You’ll read forum posts that sound like they’re written in a different language — “ST misreads with low spin, ISS from the 8ft ceiling, EMT conduit for the enclosure, GSPro on the HTPC.”

This glossary translates all of it. Bookmark it. When a term shows up that you don’t recognize, come back here.

The Launch Monitor Terms

Launch monitor (LM): The device that reads your golf ball when you hit it. The brain of the simulator. Without it, you’re just hitting into a net. Full explainer here.

Photometric: Camera-based. A launch monitor that uses high-speed cameras to capture the ball at impact. Examples: SkyTrak+, Square Golf, Uneekor EYE MINI, Bushnell Launch Pro. Best for indoor use — reads the ball at the moment of contact, doesn’t need much space.

Doppler radar: Radar-based. A launch monitor that sends radio waves and tracks the ball through the air. Examples: FlightScope Mevo+, Garmin R10, Trackman iO. Better for outdoor use — tracks ball flight over distance.

Ball speed: How fast the ball is moving when it leaves the clubface. Measured in mph. A good drive is 165-175 mph ball speed. A 7-iron is around 120-130 mph.

Club speed (CHS): How fast the clubhead is moving at impact. Measured in mph. Average amateur driver speed is 90-95 mph. A tour pro is 115-120 mph. Bryson is 190+.

Smash factor: Ball speed divided by club speed. Tells you how efficiently you transferred energy. Perfect smash on a driver is 1.50 (150 mph ball speed ÷ 100 mph club speed). Below 1.40 on a driver means you’re losing energy — bad contact.

Launch angle: The angle the ball leaves the clubface, measured in degrees. A good driver launch is 10-15 degrees. Too low and the ball balloons. Too high and it stalls.

Spin rate: How many revolutions per minute (RPM) the ball is spinning. A driver is 2,000-3,000 RPM. A 7-iron is 6,000-8,000 RPM. A wedge can be 10,000+ RPM. Too much spin on a driver = ball goes high and short. Too little = ball falls out of the sky.

Spin axis: The tilt of the ball’s spin. This is what causes draws and fades. A negative spin axis (in-to-out path) = draw/hook. A positive spin axis (out-to-in path) = fade/slice. Measured in degrees.

Club path: The direction the clubhead is moving at impact, relative to the target line. In-to-out = club moving right (right-handed golfer). Out-to-in = club moving left. Measured in degrees. Positive = in-to-out. Negative = out-to-in.

Face angle: Whether the clubface is open, closed, or square at impact. Measured in degrees relative to the target line. Open = face pointing right. Closed = face pointing left. The relationship between face angle and club path determines shot shape.

Angle of attack (AoA): Whether the club is moving down, level, or up at impact. A driver should be slightly upward (+1 to +3 degrees). An iron should be downward (-2 to -5 degrees). Steep attack = divot. Shallow = thin shots.

Carry distance: How far the ball travels in the air. This is what most launch monitors measure directly. Roll is added after landing.

Total distance: Carry + roll. The full distance the ball travels before stopping.

Misreads: When the launch monitor gets the data wrong. Every unit misreads occasionally — usually due to poor lighting (cameras), bad ball position, or low spin rates that confuse radar. The cheaper the unit, the more misreads. Forum users track misread rates obsessively.

The Software Terms

GSPro: Free, community-built simulator software. Renders 43,000+ courses. Works with most launch monitors. The gold standard for budget sim builds. It’s what makes a $700 launch monitor into a real simulator.

E6 Connect: Premium simulator software. Fewer courses than GSPro but better graphics and official licensing. Costs money — usually $300-$600/yr subscription. Some launch monitors include it.

TGC 2019 (The Golf Club 2019): Older simulator software. Still works with some launch monitors. Largely superseded by GSPro and E6. You’ll see it mentioned in older forum posts.

Foresight FSX: Foresight’s proprietary software. Only works with Foresight launch monitors (GC3, GCQuad). Expensive. Good but locked to the ecosystem.

Simulator software (sim software): The program that takes launch monitor data and renders the shot on a screen. Without it, your launch monitor is just a practice tool. With it, you’re playing golf.

The Hardware Terms

Hitting mat: The surface you stand on and hit from. Ranges from $50 (thin, feels like concrete) to $500 (thick, turf-like, feels real). A good mat matters more than you think — here’s our mat guide.

Impact screen: The projection surface that catches the ball. Made of tightly woven polyester. You hit real golf balls into it. Ranges from $150 (basic) to $800 (premium, absorbs impact quietly). Full screen guide here.

Enclosure: The frame that holds your impact screen. Usually made of EMT conduit (see below) or PVC. You build it yourself or buy a kit from Carl’s Place. Enclosure guide here.

EMT conduit: Silver metal tubing used to build enclosures. You buy it at Home Depot for $15/section. It’s the same stuff used for electrical conduit. Every DIY sim build uses it. “Carl’s” sells pre-cut kits but the raw tubing is cheap and works.

Carl’s Place (Carl’s): The dominant enclosure and screen retailer in the sim space. Everyone says “Carl’s” — not “Carl’s Place.” They sell pre-cut EMT kits, impact screens, and enclosures. The default choice for DIY builds.

Projector: The thing that displays the golf course on your impact screen. Any short-throw projector works. You don’t need a $3,000 4K unit — a $500 short-throw gets the job done. Projector guide here.

Net: If you’re not ready for a full screen + enclosure + projector setup, you can hit into a net. A launch monitor + net + mat is the minimum viable simulator. No screen, no course rendering — just data practice. Cheapest entry point.

The Space Terms

Ceiling height: How tall your room is. You need minimum 8ft for irons, 9ft for full swings with a driver. If you’re 6’2“ with an upright swing, 8ft will feel tight. 8-foot ceiling guide here.

Room depth: How deep your space is, from the hitting position to the screen/wall. Camera launch monitors need 8-10ft behind the ball. Radar units need 8ft behind + 8ft of ball flight = 16ft total. Room depth matrix here.

Ball flight distance: How far the ball travels before hitting the screen. Radar launch monitors need 8ft+ of ball flight to read accurately. Camera units read at impact, so ball flight distance doesn’t matter as much.

Side clearance: Room to the left and right of your swing. You need at least 2ft on each side so you don’t hit your enclosure frame. A 10ft-wide space is comfortable. 8ft is tight.

The Community Terms

Wife approval factor (WAF): The likelihood your partner will let you build this. The #1 real obstacle in golf simulator ownership, per 30+ forum threads. Not a joke — it’s a documented buying barrier. Here’s our full playbook.

Buy once, cry once: The forum philosophy of spending more upfront on quality components that survive upgrades. Better to spend $1,500 on a good launch monitor once than buy a $500 unit, hate it, and upgrade to $1,500 in six months.

Divorce-proof build: A build designed to stay under the spousal-objection threshold. Usually under $1,000, portable, and easy to dismantle. Our divorce-proof build guide.

Gateway drug: A cheap entry-level launch monitor (usually the Garmin R10) that introduces users to sim golf. Most people who start with a $599 R10 end up upgrading within a year.

Indoor swing syndrome (ISS): The phenomenon where your swing changes indoors. Tighter ceiling, different lighting, fear of hitting something — your body unconsciously modifies your swing. The “punch and recoil” — a compromised follow-through in tight spaces. Full ISS guide here.

Survive upgrades: Components that persist across launch monitor upgrades. A good mat and enclosure will last through 3-4 launch monitor changes. Don’t cheap out on these.

Winter Tour: Romantic framing of the garage sim in winter. Your offseason becomes a golf season. The mental health event of January-March for snow-belt golfers.

Dad guilt: The emotional cost of leaving family for 4+ hours of golf. The sim eliminates this — you golf in the garage, you’re home for bedtime. “I only miss a bedtime story or two — my dad guilt stays below manageable levels.”

Sports Truce: The healthy spouse model. Reciprocal, negotiated, transparent. “I get the garage for golf, you get Saturday morning for your thing.” Hidden spending and surprise purchases are the poison. Wife Vacation Planner here.

Pull the trigger: The moment of purchase commitment. Anxiety-laden. The forum is full of “I’m about to pull the trigger on a SkyTrak+” posts. The answer is always “do it.”

The Product Abbreviations

You’ll see these constantly in forums. They’re abbreviations, not brand names — but everyone uses them.

ST: SkyTrak. The original budget camera launch monitor. Now SkyTrak+ (ST+).

Mevo+: FlightScope Mevo+. The budget radar unit. On clearance in 2026.

GC3: Foresight GC3. Premium camera unit. $3,500+. Tour-level accuracy.

R10: Garmin Approach R10. Budget radar. $599. The gateway drug.

R50: Garmin Approach R50. All-in-one with built-in screen. $4,499.

BLP: Bushnell Launch Pro. GC3-grade camera accuracy. Often on sale.

EYE MINI: Uneekor EYE MINI. Camera + infrared. $1,499. Ceiling-mount alternative.

EYE XO: Uneekor EYE XO. Ceiling-mounted camera. $2,500+. The premium Uneekor.

KIT: Full Swing KIT. Tiger Woods’ radar unit. $4,999.

MLM2Pro: Rapsodo MLM2Pro. iPhone-camera-based. $700. Portable.

What Actually Matters

You don’t need to memorize all of this. You need to recognize the terms when you see them — and now you will.

If you’re starting from zero, read our beginner’s guide first. It explains the four things you need and what to buy. Then come back here when a term shows up that you don’t recognize.

The jargon exists because the community is deep. The nerds who’ve been doing this for 5+ years have their own language. But you don’t need to speak it fluently to build a great simulator. You just need to know what the words mean when they show up.

Now you do.