Low frequency compression driver The CD140S combines high BL and a lightweight diaphragm assembly to produce a very high output device that also features extended bandwidth and well defined frequency response. HOQS 18" & 21" Low frequency drivers HOQS F185C Ferrite 18" Recone Kit Available Altec 804A compression driver diagram from an Altec brochure. However, for our purposes, the distortion rises quickly in the low end. Longer wave-lengths than the horn length cause the diaphragm to move excessively. The Introducing our latest innovation – the 142FCD compression driver! Developed using advanced FEM techniques, this driver outperforms many of our competitor products. The design of horn-loaded midrange systems can broadly be categorized into two philosophies: The first is based on high-frequency compression driver designs that are optimized to operate over a lower frequency range. A compression driver is a small specialized diaphragm loudspeaker which generates the sound in a horn loudspeaker. 75", impedance is 16 Ohms, and diameter is 4. 2" compression driver: This is a historic size with limited high-frequency control. The Altec 804A / 802D frequency response is 500Hz to 22,000Hz, voice coil diameter is 1. nof 5vfvr6 ujqg ajgz wz kzsh 7kwa am0j pewqm q73h