Seas SL26R (D1003) 10" Passive Radiator (Mate to L26ROY)

Designed by Seas SL26R 10" Passive Radiator for Subwoofers

• 10" Long Throw Aluminum Cone Passive
• Large-roll rubber surround
• Cast frame
• M4 threaded hole on back so more mass can be added
• Same frame size as discontinued Peerless 830481 passive
• Application note on using this passive with the L26ROY active woofer

SL26R is a passive radiator intended for use as an alternative to the port in a bass reflex cabinet, together with an active woofer of similar size or smaller. 

In many applications, the traditional bass reflex port may produce high-speed air noise or even have a poor effect due to a small port area or a large port length. In such cases, a passive radiator may bring about an improvement. 

The chart below will show you the mass which has to be added to the cone of the passive radiator in order to obtain the desired Helmholtz resonance frequency in a given cabinet volume.

The SL26R is already matched to our D1001 - L26ROY and a 40 liter cabinet. but it’s also equipped with an M4 screw to which you can easily attach more added mass for other appications.  In this box you are 3dB down at 38Hz with the actual roll off at 25Hz (5.5dB down).  

For optimum performance, the passive radiator should be mounted vertically (with horizontal cone axis) This is especially important when a significant additional mass is used.

Qms 14

Rms 1.63 kg/s