

PROFESSIONAL
Installation Guide
GSF3 & GSF6 Landscape Speakers
CAUTION: Installation must be done by qualified persons using safe installation standards.
The installer is responsible for proper selection and use of mounting hardware and processes to install the speakers in a safe manner.
Wire Connection
- CABLE– The GSF speakers have a captive 1-meter long cable for bare-wire connection via an external installer-provided weather-proof junction box.
o Polarity — The red wire is + (positive) and the black wire is – (negative).
o Wire Gauge – The wire gauge is 18 AWG (1 mm ).
o Wire Jacket – The wire jacket is 5 mm (+0/-05.mm) in diameter.
o Connecting — Use proper professional wire nuts or other safe connectors that are appropriate for the installation conditions and that are sized properly for wire gauge(s) and number of wires to be connected together in the connector.
o Routing – When using the ground-stake or L-bracket base, the cable can be routed through the base.
Setting TAP SELECTOR SWITCH 
- Rotate bottom-panel TAP SELECTOR SWITCH to select between:
o GSF3: 8Ω (ie, low-impedance / direct)
15W or 7.5W for either 70V or 100V distributed speaker system
3.75W for 70V distributed speaker system only
o GSF6: 8Ω (ie, low-impedance / direct)
30W or 15W for either 70V or 100V distributed speaker system
7.5W for 70V distributed speaker system only
Installing GROUND-STAKE BASE or L-BRACKET BASE to LOUDSPEAKER
- The speaker comes with both a GROUND-STAKE BASE and an L-BRACKET BASE. Use whichever one applies to the installation requirements of the project.
- At the bottom of the LOUDSPEAKER there is a SOCKET. Three-head set screws come with the speaker (packaged in a separate pouch) for attaching the chosen base into the SOCKET.
o Screw Dimensions — GSF3: M4 x 0.7 – 5mm, with 3 mm hex drive GSF6: M4 x 0.7 – 9mm, with 3 mm hex drive
- Use the included 3 mm hex wrench to tighten the 3 set screws to hold the chosen base securely.
- For GROUND-STAKE BASE, press base into the ground.
CAUTION WHEN RE-AIMING SPEAKER: When ground-stake is utilized, re-aiming speakerhorizontally requires either: a) completely pullingstake from ground and re-pressing back intoground at new aiming angle, or b) loosening 3 setscrews, re-aiming speaker, and re-tightening setscrews. Trying to rotate speaker with stake inground and set screws tightened could result in damage or breakage. - For L-BRACKET BASE, securely attached base to either horizontal surface (such as decking or railing) or vertical surface (such as the side of a building or post). Use the proper attachment hardware for the material and characteristics of what it’s being attached to.
Aiming LOUDSPEAKER
CAUTION WHEN ROTATING ON L-BRACKET: When L-bracket is utilized, rotating speaker on Lbracket requires loosening 3 set screws, rotating speaker, and re-tightening set screws. Trying to rotate speaker with set screws tightened could result in damage or breakage.
- Loosen HINGE BOLT by using included 4 mm hex key. Aim loudspeaker, and then retighten.
- Aiming Speaker at Downward Angle Provides Best Drainage – The greatest water drainage and reliability can be achieved by aiming the speaker at a slight downward aiming angle.
- Maximum Upward Aiming Angle of 30° — For when aimed slightly upward, there is a drain hole at the bottom of the speaker that helps to drain water from the front of the speaker’s driver at aiming angles up to a maximum 30°. At upward aiming angles greater than 30°, water can pool on the driver, potentially causing damage.
Ingress Protection Rating
- IP66 — The GSF speakers are rated IP66 per IEC529 (highly protected against ingress from dust and water). However, the speaker is not rated for submersion in water, so steps must be taken to ensure that no immersion situation occurs.
SAFETY-CABLE ATTACHMENT POINT

- Attach installer-supplied secondary safety cable (ring lug end recommended) to M6 SAFETY CABLE ATTACHMENT INSERT POINT
using installer-supplied M6 x 12 mm or shorter (12 mm is max depth of the threaded insert – ensure a minimum of 4 threads of engagement) bolt through the ring lug at end of safety cable. Attach other end of cable (with appropriate end-type and attachment hardware for the building structure) to a separate attachment location on building structure (not the same spot as used for attaching the WALL BRACKET).
CONTACT INFORMATION
| Harman Professional Headquarters 8500 Balboa Blvd. Northridge, CA 91329 USA +1 (800) 852-5776 www.jblpro.com | Harman Professional London Harman Westside Hemel Hempstead, HP3 9TD London, UK +44 (0)1707 668034 |
| Worldwide Customer Service Monday – Friday 8:00am – 5:00pm PCT +1 (800) 8JBLPRO (800-852-5776) [email protected] www.JBLservice.com | Professional Contacts, Outside the USA: Contact the JBL Professional Distributor in your area. A complete list of JBL Professional international distributors is provided at our U.S.A. website: www.jblpro.com
|
| HARMAN USA Technical Support Monday – Friday 8:00am – 5:00pm +1 [844] 776-4899 [email protected] www.harman.com
| Harman Professional Singapore 108 Pasir Panjang Road #02-08 Golden Agri Plaza Singapore 118535 +65 6870-5000 www.harman.com
|
Harman Professional Shenzhen
20F, China Merchants Port Plaza, #1
Gongye 3rd Road, Shekou, Nanshan Dist.
Shenzhen, 518067, China
+86 755 8634 3702
www.harman.com
Harman Professional India
Prestige Technology Park Jupiter 2A Block, 4th Floor
Marathahalli Ring Road
Bangalore 560103, India
+918049365905
www.harman.com
JBL Professional ǀ 8500 Balboa Blvd. ǀ Northridge, CA 91329
GSF Guide, Rev A3
12/2022
GSF3
3” Ground-Stake Loudspeaker

HIGHLIGHTS
The compact, weather-resistant JBL GSF3 landscape loudspeaker provides superior fidelity and wide coverage in a range of outdoor commercial applications, with a custom two-way coaxial 3-inch driver system that delivers full-range, crystal-clear sound. (Extend system bass response with JBL GSB8 or GSB12 in-ground landscape subwoofers.) This versatile speaker features a 15-watt multi-tap transformer for use on 70V/100V distributed systems, and is switchable for 8-ohm direct operation.
Versatile mounting options include an included ground stake for in-ground installation and an L-bracket for secure mounting on either horizontal or vertical surfaces. A low-profile, unobtrusive speaker, the GSF3 blends right into its surroundings, and is aimable for precise coverage via an adjustable hinge. Available in hunter green and tan finishes.
The elegant, discreet GSF3—winner of international design awards for industrial design excellence—is the perfect sound solution for diverse outdoor applications including shopping malls, theme parks, sports venues, hospitality venues, and any application calling for a stylish, robust, great-sounding landscape speaker system.
FEATURES
Transducers: 83 mm (3”) woofer with polypropylene cone and 25 mm (1”)
voice coil on Kapton voice coil former; 20 mm (0.8 in) titanium dome tweeter
with neodymium magnet assembly and Kapton voice coil former.
Frequency Range: 90 Hz–20 kHz
Power Handling (at 8Ω setting): 30 watts
IP-66 rated against water and dust ingress
Multi-tap 15W transformer is switchable for 8Ω direct operation
or use in 70V/100V distributed systems
Bottom drip hole provides drainage for drivers
Pairs well with JBL GSB8 and GSB12 in-ground landscape subwoofers
Aimable via adjustable hinge
Includes ground stake and L-bracket for surface mounting
Tap selector located on bottom of speaker, away from water incursion
Available in Hunter Green or Tan finish
SPECIFICATIONS
| SYSTEM | |
| Frequency Range’ (-10 dB): | 74 Hz – 20 kHz |
| Frequency Response’ (-13 dB): | 120 Hz – 15 kHz |
| Power Rating’: | 60 W Continuous Program (2 his) 30 W (120 W Peak). Continuous Pink Noise (2 tirs) 15 W (60 W Peak). Continuous Pink Noise (100 hrs) |
| Sensitivity’: | 82 dB 1120 Hz – 8 kHz) |
| Nominal Coverage Angle: | 90′ conical |
| Directivity (0): | 8. |
| Directivity Index (DU: | 9 dB |
| Rated Maximum SPU: | 103 dB peak (97 dB continuous. 2 hr) CD lm |
| Nominal Impedance: | 8 0 (at 80 tap) |
| Minimum Impedance: | 6.5 Oat 350 Hz |
| Transformer Taps: | 70V: 15 W. 7.5 W. 3.8 W 100V: 15 W. 7.5W |
| Insertion Loss: | c1.0 dB at any tap setting |
| Thru Setting: | 80 nominal |
| Maximum Input Voltage: | 13.5 V RMS (2 hrs). 27 V peak |
| Recommended Protective High-Pass: | 80 Hz for 80 operation and for all tap settings. 24 dB/oct |
| TRASDUCER | |
| Drivers: | •83 mm (3 in) woofer. polypropylene cone 25 mm (1 in) voice coil on Kaptcri”4 voice coil former •20 mm (0.8 in) titanium dome. Neodymium magnet assembly. Kapton,” voice coil former |
| PHYSICAL | |
| Enclosure Material: | Polycarbonate + ABS. UL94V-0 flammability rated |
| Grille: | Aluminum |
| Environmental: | IP-66 rating per IEC529 (dust protected and protected against strong jets of water). Exceeds MilSpec 810 for humidity. salt spray. temperature. & UV. Passes Mil-Std-202F for salt spray. |
| Agency Ratings: | Transformer UL Recognized per UL1876. ROHS compliant. |
| Terminals: | Bare wire with dielectric-gel-filled wire nuts (1 meter single jacked cable 2 wires with 18 AWG) |
| Colors: | Hunter Green RAL 6018. or Tan RAL7004 |
| Dimension (H X 0): | Cabinet 132 mm diameter x 167 mm deep (5.2 x 6.6 in). Assembly height 289 mm (11.4 in) with L-bracket base (at 90°) and 430 (17.0 in) with ground stake base |
| Net Weight | 1.7kg (3.8 Ibs) |
| Shipping Weight | 6.2 kg (13.7 Ibs) per carton (2 speakers per carton) |
| Included Accessories: | (1) Ground Stake Bracket: (1) L-Bracket |
| SKU Numbers: | JBL-GSF3-GN (green). JBL-GSF3-TN (tan) |
- Half-space, 2π loading (ground or wall as acoustic boundary)
- Continuous Pink Noise rating is IEC-shaped pink noise with a 6 dB peak-to-average crest factor for 100 hours continuously. Continuous Program power is a conservative expression of the system’s ability to handle normal speech and music program material and is defined as 3 dB above the Continuous Pink Noise rating.
- Half-space, 2π loading (ground as acoustic boundary), averaged 120 Hz – 8 kHz.
- 8 ohm mode, calculated from sensitivity and power handling, exclusive of power compression. _____________
JBL continually engages in research related to product improvement. Some materials, production methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated.
Frequency Response: In half-space (2-pi, on-wall or in-ground, solid line) and full-space (4-pi, dotted line)
Beamwidth:
Off-Axis:
Dimensional Drawing: With included ground stake
With included L-shaped bracket


HARMAN Professional 8500 Balboa Blvd. Northridge, CA 91329 USA
© 2022 HARMAN International Industries, Incorporated. All rights reserved.
Features, specifications and appearance are subject to change without notice.
www.jblpro.com


CAUTION WHEN RE-AIMING SPEAKER: When ground-stake is utilized, re-aiming speakerhorizontally requires either: a) completely pullingstake from ground and re-pressing back intoground at new aiming angle, or b) loosening 3 setscrews, re-aiming speaker, and re-tightening setscrews. Trying to rotate speaker with stake inground and set screws tightened could result in damage or breakage.
















