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JBL
JBL 308P MKIII 8 Powered Studio Monitor
Re-engineered studio monitoring, within reach.
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Want to Click and Collect or try items at our Guildford Store?
The store is open 10am - 6pm Monday to Saturday and 11am - 5pm Sunday and bank holidays.
The stock information shows the quantity of units that are available to purchase at the Guildford store and the quantity of units that are available at our off-site Guildford warehouse. These stock levels are updated in real time.
Our Click and Collect service is available at our Guildford store from 10am - 6pm Monday to Saturday, and 11am - 5pm on Sunday. You can either choose Click and Collect as your delivery option online or, during store opening hours, call our sales team on 01483 456777 for assistance with placing your order.
If you have placed your order online, you will receive a confirmation email of your order and a separate follow-up text or email to confirm when your item is ready for collection.
Please do not come to the store before you have received the follow-up message, as your order may not yet be ready at the store.
If the only available stock is in our off-site warehouse it can be brought to the store location for you to try - you just need to contact the store within opening hours. Please note any requests received after 3.30pm will not arrive at the store until the following morning.
Please be aware that stock availability can change quickly both online and in-store, so we would always recommend placing your Click and Collect order as soon as possible to reserve your item.
SKU: JBL-308PMKIII
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Product Description
The JBL 308P MkIII is an 8-inch powered studio monitor designed to provide detailed, high-output monitoring for music production, recording, mixing and content creation. It represents a major redesign of the 3 Series platform, combining a new acoustic system with improved electronics, flexible room correction and adaptable installation.
Its redesigned 8-inch low-frequency driver uses stiffer cone materials, an upgraded magnet assembly and an aluminium shorting ring to improve power handling and reduce distortion. A redesigned high-frequency driver and improved JBL Image Control Waveguide provide a wide, consistent listening area with precise stereo imaging. The front-firing JBL Slipstream port helps maintain more predictable bass performance on desks, stands and near walls.
Four one-touch EQ controls provide 81 corrective EQ combinations for adapting the monitor to its surroundings without calibration software. The new Class D amplifier delivers 110 W of power, while balanced Neutrik combo inputs and selectable +4 dBu or -10 dBV sensitivity provide straightforward studio connectivity.
Features
- 8 Inch Low-Frequency Driver - The redesigned driver uses stiffer cone materials, an upgraded magnet assembly and an aluminium shorting ring for improved power handling.
- Wide and Consistent Coverage - The JBL Image Control Waveguide and redesigned high-frequency driver provide detailed reproduction and precise stereo imaging across a broad listening area.
- Front Firing Slipstream Port - The front-firing port helps make low-frequency response more predictable when the monitor is used near walls or on desks.
High Output Studio Monitoring:
The 308P MkIII is built for monitoring environments where greater low-frequency extension and output are important. Its redesigned 8-inch low-frequency driver uses stiffer cone materials, an upgraded magnet assembly and an aluminium shorting ring, helping improve power handling and reduce distortion. The new high-frequency driver works with the improved JBL Image Control Waveguide to deliver detailed sound across a broad listening area, supporting precise stereo imaging and a stable phantom centre. With 110 W of Class D amplification and a 113 dB peak SPL, the 308P MkIII provides substantial output for demanding production environments.
Adaptable Acoustic Performance:
The 308P MkIII includes practical tools for adapting its response to different studio environments. Four one-touch EQ controls provide 81 corrective EQ combinations, covering common requirements associated with speaker placement, boundary distance and high- or low-frequency response. This allows adjustments to be made directly from the monitor without measurement rigs or calibration software. The front-firing JBL Slipstream port also helps maintain more predictable low-frequency behaviour when the monitor is positioned on a desk, monitor stand or close to a wall. These features make it easier to achieve a consistent monitoring setup across different rooms and workspaces.
Flexible Studio Integration:
With balanced Neutrik combo inputs and selectable +4 dBu or -10 dBV sensitivity, the 308P MkIII is designed to connect easily with a wide range of studio equipment. Its eight M4 mounting points allow elevated, inverted or side-firing placement, providing additional flexibility beyond conventional monitor stands. The monitor can be used as part of a stereo system or expanded into larger surround and immersive configurations. Its combination of substantial output, adaptable room controls and flexible installation makes the 308P MkIII suitable for modern project studios, professional production environments and content creation spaces.
Specifications
- 8 inch two way powered studio monitor
- 41 Hz to 20 kHz low frequency extension (-10 dB)
- 113 dB peak SPL
- 110 W Class D amplification
- Redesigned high frequency driver
- Redesigned 8 inch low frequency driver
- JBL Image Control Waveguide
- JBL Slipstream front firing bass port
- 81 corrective EQ combinations
- Four one touch EQ controls
- Balanced Neutrik combo inputs
- Selectable +4 dBu / -10 dBV input sensitivity
- Eight M4 mounting points
