Included in the box Overview Models Typical Applications Installation Guide Unpacking Achieving Best Performance Choosing the Best Location Avoiding Vibrations Installation Guide Wiring the Speakers – best practice Defining and calculating speaker’s sound pressure levels (SPL) Technical Specifications CL-8P-SUB – Contents...
8” subwoofer enhances any space with deep, rich bass, seamlessly integrating into the ceiling for a clean and professional look. Designed to complement commercial audio installations, the CL-8P-SUB is suitable for both low impedance (8Ω) and high impedance (70V/100V) systems, offering exceptional flexibility for a wide range of applications, including auditoriums, high-end boardrooms, hotel lobbies, and shopping malls.
Kramer Electronics Ltd. Overview The CL-8P-SUB is a high-performance 8” in-ceiling passive speaker featuring exceptional sound, optimized for speech intelligibility, ideal for auditoriums, board rooms and high ceiling applications. The speaker supports both 8Ω low impedance as well as several 70V/100V high impedance modes.
Part Number Description CL-8P-SUB (SINGLE) 60-000127 8” In-Ceiling Passive subwoofer Typical Applications CL-8P-SUB is ideal for a variety of typical applications, including: Enhancing the sound in every space • • Auditoriums Restaurants, hotels and hospitality applications • CL-8P-SUB – Overview...
Dispose of the packaging materials according to regulations. • Achieving Best Performance To achieve the best performance: Use High-Quality Speaker Cables: We recommend using Kramer’s plenum-rated, low • smoke, halogen-free speaker cables (e.g., BC-2Sxx/LSHF) for optimal audio performance and safety compliance.
Inspect Surrounding Structures: Check that all ceiling tiles, panels, and nearby fixtures are • secure and will not rattle during subwoofer use. Reinforce or secure them as necessary. Installation Guide The CL-8P-SUB can be installed in a suspended acoustic ceiling grid using two methods: • Using the Dedicated Ceiling Mounting Kit: •...
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Set the Transformer Tap: • Adjust the transformer tap to the desired setting for your system configuration. Attach the Magnetic Grille: • Snap the magnetic grille to the subwoofer’s grille securing hook and place it into position. CL-8P-SUB – Installation Guide...
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Kramer Electronics Ltd. T-channel Grid C-ring Support Ring Tile Rails Screws Ceiling Tile Note: The C-ring is supplied with the speaker, the ceiling mounting rails (CSMR) are optional and should be purchased separately CL-8P-SUB – Installation Guide...
Long cable runs (up to hundreds of meters) without significant loss. • CL-8P-SUB In high impedance mode the supports the following power Note: ratings: at 100V – 80W / 40W / 20W at 70V – 80W / 40W / 20W / 10W CL-8P-SUB – Installation Guide...
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When You Need High SPL or Full-Range Performance • Transformer-based 70V/100V systems often cut low frequencies to protect • transformers and reduce core size. For full-range systems where bass and clarity matter - 8Ω wins. • CL-8P-SUB – Installation Guide...
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In most other countries, 100V systems are common because local electrical standards allow higher voltages in low-current applications. The key advantage of 100V systems is that they deliver more power over longer distances with thinner cables, making them ideal for large-scale distributed audio installations. CL-8P-SUB – Installation Guide...
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46m / 150ft (3.31mm 10 AWG 730m / 2400ft 243m / 795ft 146m / 480ft 73m / 240ft (5.26mm Note: These are maximum total distances for the entire run, based on copper cable and a 5% voltage drop. CL-8P-SUB – Installation Guide...
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Always check amplifier compatibility before connecting (impedance setup, power ratings) Verify that the polarity of the wiring at the amplifier side and at all the speaker is correct, we recommend using color coding: red for + and black for -. CL-8P-SUB – Installation Guide...
Outdoor Areas Paging, music 75–85 dB SPL 75–85 dB SPL adjust levels to environment. Subwoofer essential for full- Speech, music, live range sound; dynamic Auditoriums 80–95 dB SPL 80–95 dB SPL events content may require additional headroom. CL-8P-SUB – Installation Guide...
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CL-8P-SUB with 84dB sensitivity, driven by a 80W amplifier, the sound pressure level 3 meters from the speaker will be: = 84 + 10 ∙ log (80) – 20 ∙ log (3) = 93.5 dB SPL CL-8P-SUB – Installation Guide...
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For the latest information on our products and a list of Kramer distributors, visit our website where updates to this user manual may be found. We welcome your questions, comments, and feedback www.kramerav.com support@kramerav.com...
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