Proficient 3.5" Small Aperture In-Ceiling Speaker PAS-C355 with Carbon Fiber woofer, 1" Aluminum-Tweeter
Big sound, small hole.
A 3.5" in-ceiling speaker with a glass fiber woofer and two-way crossover. It puts clear vocals and music in any room, and it installs with a standard hole saw.

Great room audio shouldn't need a big hole in the ceiling.
Whole-home, background and home theater audio works best when the speakers blend into the room and install quickly. A small aperture speaker keeps the ceiling clean while still delivering clear sound.
Compact speaker, clear sound
The PAS-C355 pairs a small footprint with a two-way design made for custom installs.
3.5" glass fiber woofer
Stiff, light, and incredibly strong, this compact woofer is transparent with low distortion.

Cut-out size
Cut the hole with a standard hole saw.
Silk dome tweeter
Proportionately massive to deliver dynamic detail at a lower crossover point.
Two-way crossover
Delivers smooth, rich vocals with exceptional clarity and sound quality to any room in the home.
Quick retrofit install
The 4.75" cut-out size works with a standard hole saw.
Everything you need to know.
| Brand | Proficient |
| Model | In-Ceiling |
| Size | 3.5" |
| Mount Type | In-ceiling Mount |
| Material | Glass Fiber |
| Cut-out Size | 4.75" |
| Minimum Frequency Response | 70Hz |
| Maximum Frequency Response | 20kHz |
| Sensitivity | 80dB |
| Impedance | 8Ohm |
| Shipping Weight | 2.4 lb |
Proficient 3.5" Small Aperture In-Ceiling Speaker PAS-C355 with Carbon Fiber woofer, 1"...
The Proficient 3.5" Small Aperture In-Ceiling Speaker PAS-C355 with Carbon Fiber woofer, 1" Aluminum-Tweeter is from Proficient Audio, a line of speakers and audio accessories for custom installers and homeowners building whole-home, outdoor and home theater audio.
Proficient speakers are designed for custom installations, from in-ceiling and in-wall speakers that blend into a room to weatherproof outdoor and landscape models.
Key Features
- 3.5” Glass Fiber Woofer Stiff, light, and incredibly strong, this compact woofer is transparent with low distortion.
- .75” Silk Dome Tweeter Proportionately massive to deliver dynamic detail at a lower crossover point.
- Two-way Crossover Delivering smooth, rich vocals with exceptional clarity and sound quality to any room in the home.
- 4.75” Cut-out Size Use a standard hole saw for a quick retrofit install.
Specifications
- Brand: Proficient
- Model: PAS-C355
- Form Factor: In-ceiling
- Shipping weight: 2.4 lb
Typical Uses
- Whole-home and multi-room audio
- Home theater and background music
- Restaurants, offices and retail spaces
Please confirm cut-out size, mounting and compatibility with your existing speakers or amplifier before ordering.
Need help with compatibility?
Looking for a manufacturer part number, compatible replacement, or quantity order? Contact Raztechs for sourcing and quote support.

Proficient In-Ceiling, ready to order.
- Size: 3.5"
- Mount Type: In-ceiling Mount
- Material: Glass Fiber
- Cut-out Size: 4.75"
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