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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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Description
JBL Synthesis SCL-8 In-Ceiling SpeakerThe SCL 8 is the most compact round in ceiling model in the JBL Synthesis Custom Loudspeaker (SCL) series. It is designed for use as a height channel or in ceiling LCR or surround channel loudspeaker. The SCL 8 features JBLs patented 2410H 2 1 inch (25mm) compression driver mated to an offset High Definition Imaging (HDI) horn. This patented horn design is integrated with an angled 5. 25 inch (130mm) Advanced Aluminium Matrix cone cast frame woofer
The SCL-8 is the most compact round in-ceiling model in the JBL Synthesis Custom Loudspeaker (SCL) series. It is designed for use as a height channel or in-ceiling LCR or surround channel loudspeaker. The SCL-8 features JBL’s patented 2410H-2 1-inch (25mm) compression driver mated to an offset High Definition Imaging (HDI™) horn. This patented horn design is integrated with an angled 5.25-inch (130mm) Advanced Aluminium Matrix cone cast-frame woofer operating behind an acoustic aperture waveguide. The innovative configuration yields incredibly smooth and consistent performance for off-axis placement up to 60 degrees from the listening position. The SCL-8 is acoustically designed to match any of the JBL Synthesis Custom Loudspeakers (SCL series) as part of a complete JBL Synthesis immersive audio solution. It is ideal for use in small to medium rooms.
SCL-8 Highlights
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2-way in-ceiling loudspeaker system designed for off-axis listening as height, in-ceiling LCR and surround channels
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1-inch 2410H-2 compression driver tweeter mated to a JBL patented offset High-Definition Imaging (HDI™) horn assembly
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5.25-inch (130mm) Advanced Aluminium Matrix cone, cast frame woofer with acoustic aperture waveguide baffle
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Patented Cat Claw installation mechanism
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Gold plated, spring-loaded binding posts
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Includes paintable round and square zero-bezel, magnetically attached grilles
General Specifications
| Type | 2-Way In-ceiling loudspeaker |
|---|---|
| Low Frequency Driver | 5.25” (130 mm) advanced Aluminium Matrix cone cast-frame woofer (JW130Al-4) |
| High Frequency Driver | 1" (25 mm) 2410H-2 Teonex annular ring-diaphragm compression driver |
| Recommended Amplifier Power | 25 - 100 W RMS |
| Impedance | 4 Ohm |
| Loudspeaker Sensitivity | 85 dB/2.83V/1m (2pi anechoic) |
| Frequency Response | 55 Hz - 30 kHz (-6 dB on-axis), 2pi anechoic |
| Crossover Frequency | 1.8 kHz |
| High Frequency Coverage Angle (-6dB) | 60° Vertical (Up 30°, Down 30°, from 45° Vertical Centre line), 120° Horizontal, from 2k Hz to 10k Hz. |
| Enclosure Type | Open back |
| Controls | Boundary Proximity Control |
| Warranty | 5 Years |
| Shipping Units of Measure | Each |
| Grill Dimensions (Square) | 10.77” (273 mm) x 10.77” (273 mm) |
| Grille Dimensions (Round) | 10.77” (273 mm) Diameter |
| Product Dimensions (with grille) | 10.77” H x 10.77” W x 4.73” D (273 mm x 273 mm x 120 mm) |
| Cut-out Diameter | 9.72” (247 mm) |
| Accessory Rough-in Bracket | CB8 |
| Mounting Depth | 4.54” (115 mm) |
| Input Type | Gold-plated spring-loaded binding posts |
| Product Weight | 7.8 lb. (3.5 kg) |
| Shipping Weight | 10.6 lb. (4.8 kg) |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
The beautiful shine!!!!
Wow so amazing!!!!! I have a 35 ft trailer you will need 2 bottles for two coats. Well worth the price.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Wish I Had Used This Sooner – Stop Debating and Just Buy It!
Size: Powder Poli Ox - Pack of 6
Wish I Had Used This Sooner – Stop Debating and Just Buy It!
After a lot of debate, extensive research, and way too many hours spent using other products trying to restore and protect my RV's fiberglass that never fully delivered the results I was after, I finally tried the Poli Glow Deluxe Kit—and I am extremely happy I did. My only regret is not using it sooner instead of letting other people's opinions talk me out of it.
The 6-in-1 complete kit is the right way to tackle fiberglass restoration from start to finish—eliminating oxidation, restoring the shine, and then protecting it long term all in one comprehensive system. The difference in how my RV looks after going through the full Poli Glow process is genuinely impressive and far beyond what any single product or traditional buffing method I tried before could deliver. The oxidation came off cleanly, the restored shine is deep and glossy, and the long-lasting protection gives real peace of mind knowing the fiberglass is shielded from UV damage and the elements going forward—especially important in the brutal Las Vegas sun.
For anyone who has been going back and forth on whether to invest in the full Poli Glow Deluxe Kit—stop debating, stop listening to everyone else's opinion, and just do it. The complete system delivers complete results, and I won't be using anything else on my RV going forward. Highest possible recommendation.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Great stuff.
Size: Powder Poli Ox - Pack of 6, Size: Powder Poli Ox - Pack of 6
My RV had moderate oxidation. I tried several polishes and waxes. Nothing worked well to make it shine out lasted long. I applied poly glow a week ago. It is easy to apply and made my RV shine like new. So far I love Poly glow and if it lasts anywhere a long as they say, I will continue to use it.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
It Works!!!!!
Size: Powder Poli Ox - Pack of 6
We have only completed the first two steps it Poly Glo set we purchased and has it ever made a difference in the look of our hauler/trailer! The dull oxidize black color is somewhat shiny. Cant wait to put the final two steps on it! A little elbow grease and work did wonders! We will share a photo once the procedure is complete!
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Reviewed in the United States on May 19, 2026
★★★★★ 4
Could be good
Size: Powder Poli Ox - Pack of 6
I cleaned my RV very thorough from top to bottom before even starting the process with the Poli Glow system. Here's what I learned despite videos and lots of reading reviews.
1. Must be very clean and clear of anything you dont want to stick and show on your final outcome.
2. It takes more coats than you think it would (after 3 coats) it was still really streaky and I was starting to regret using Poli Glow. I ended around 7-8 coats and my rig had no major oxidation at all.
3. As one reviewer said, use a clean microfiber cloth v the applicator that comes with it, I found much better results with no lines.
4. Dont go to heavy on the coating, the instructions say this, but I went super light and it can be very easy to get lines with heavier application.
5. Dont look at your work after 3 coats, you will feel deflated, just keep going for at least 6 coats and then look at your work.
6. Only do small areas and look out for drips and lines, you need to get them out right away.
7. I did not use the Poli Ox, I was able to get any oxidation out with just the Poli Prep
8. Going up and down a ladder for hours sucks!
9. I hope it will come off in the next couple of years when I plan to replace the decals. Honestly, thats my biggest fear is how hard it will be to remove when the time comes.
10. After a scary start, I will say it did turn out pretty nice, was it easy, nope, would I do it again? Not sure, I need some time for my back to heal up!
If you do choose Poli Glow know there are other options that maybe a better way to go such as wet sanding etc. Poli Glow is pretty good, but it can be pretty bad also if the surface is not cleaned and the Poli Glow applied correctly.
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Reviewed in the United States on August 17, 2023