Exact source record · ID 70498609JBL / Subwoofers
JBL SRX818SP
Model SRX818SP · Source ID 70498609
JBL SRX818SP is a powered subwoofer with subwoofer frequency range of 29 - 150 Hz and subwoofer driver diameter (imperial) of 45.7 cm (18"). ProductFindr ties this page to source product ID 70498609 and separates verified product facts from optional retailer offers.
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Decision specifications
Facts that change the room.
Driver size, amplification and room-scale bass capability.
Subwoofer frequency range
29 - 150 Hz
Subwoofer driver diameter (imperial)
45.7 cm (18")
Amplifier class
D
AC input frequency
50 - 60 Hz
Compatibility before checkout
Questions the SKU still has to answer.
These checks prevent a technically good product from becoming the wrong product for a specific room or signal chain.
- 01
Do the cabinet dimensions fit one or more viable positions in the room?
- 02
Does the receiver provide the required subwoofer output and bass management?
- 03
Is one unit sufficient for the room volume, or should the plan reserve two positions?
Source-backed specification ledger
The facts behind the answer.
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- Subwoofer RMS power
- 750 W
- Subwoofer frequency range
- 29 - 150 Hz
- Subwoofer peak power
- 1000 W
- Subwoofer sensitivity
- 135 dB
- Subwoofer driver diameter (imperial)
- 45.7 cm (18")
- Number of subwoofers
- 1
- Amplifier class
- D
- XLR in
- Yes
- Product colour
- Black
- Material
- Plywood
- LED indicators
- Yes
- Equalizer
- Yes
- Handle(s)
- Yes
- Mounting brackets included
- Yes
- Power source type
- AC
- AC input frequency
- 50 - 60 Hz
- AC input voltage
- 100 - 240 V
- Subwoofer width
- 68.4 cm
- Subwoofer depth
- 57.5 cm
- Subwoofer height
- 68.3 cm
- Subwoofer weight
- 39.5 kg
Image evidence
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SOURCE ID 70498609 · source-verified
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Product records and images in this Home Theater catalog originate from Open Icecat and their respective copyright holders. The Open Icecat-derived catalog remains available at no charge under the Open Content License v1.4.
Modified by ProductFindr on 2026-08-08: source fields were normalized, deterministic summaries were assembled from recorded specifications, and source images were resized to a maximum of 1,200 pixels and converted to WebP. No generative model creates these product facts. Open Icecat content is provided as is, without warranty. ProductFindr's interface and independent room guidance are separate original work.