BOSE FreeSpace 360P Series II ลำโพงสนาม 4.5 นิ้ว 320วัตต์ที่ 8โอมห์ 80วัตต์ที่ 70/100V ความดัง 100dB
This application note covers the basic concepts for the application of the Freespace 360P series ii loudspeaker in business music systems. The Freespace 360P series ii loudspeaker is ideally suited to background and foreground music in outdoor applications. The unique design of the Freespace 360P-ii delivers a full range response across a 360° area. The Freespace 360P-ii loudspeaker is compatible with 70V and 100V amplifiers, and is capable of delivering up to 90dBsPL in a typical application with a 15ft (4.8m), speaker to listener distance.
All system designs begin with a set of requirements. The system requirements can be as simple as “it has to sound great,” or as detailed as “it must have an output level of 100dBsPL”. in either case the challenge is to gather the right set of requirements, and then turn them into a set of design criteria that you can use to create your design. The three key requirements that you need to identify in order to deliver the right business music sound system are: Loudness What sound pressure level is required for this application? Response What bandwidth is required for the type of program material that will be used? CoveRage How consistent must the sound be across the entire coverage area?
Loudness What sound pressure level is required for this application?
Response What bandwidth is required for the type of program material that will be used?
CoveRage How consistent must the sound be across the entire coverage area?
each of these requirements can be easily converted into a specification that we can use to create our system design. if we understand the customer’s needs in these three areas, we can deliver a design that will, at a minimum, meet their needs, and at best, exceed their expectations.
For the purposes of this application note we will assume that you are familiar with the system requirements for a business music system, and are ready to focus on the creation of a speaker layout using the Freespace 360P-ii loudspeakers.
Design Guidelines
When creating a design that uses the Freespace 360P series ii loudspeakers, you should consider the following:
- The FreeSpace 360P-II is designed for in or above ground installation.
- Listeners should always be at least 3ft (1m), away from the nearest Freespace 360P-ii.
- Maximum SPL for a typical application is between 85 and 90dBsPL.
- Always add 25% headroom to your amplifier to accommodate various types of program material.
คุณสมบัติ:
- Full-range environmental loudspeaker with one downward-firing 4.5” (114 mm) advanced-composite environmental full-range driver for in-ground or above-ground mounting
- Domed port grille reflects sound into the listening area for clear, consistent performance
- Cabinet shape acts as acoustic diffuser directing mid- and high-frequency energy out towards listeners. Base of loudspeaker acts as a tuned, multi-chambered ported enclosure
- Multi-tap line transformer provides easy-to-change tap settings
- Tamper-resistant design
- Internal speaker protection circuit safeguards drivers