Passive speaker Peerless SDS-P830880, 5.28 / 5.98 inchThe SDS passive radiator family offers low resonant frequency performance, ideally suited for compact sealed enclosures. This 5.25 inch member of the SDS family is a passive radiator, designed to match up with SDS subwoofers, and features a coated paper cone with rubber surround, and a narrow-profile steel basket shaped to fit into narrow cabinets.
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Nice passive radiator from Peerless: it's got plenty of excursion and comes with a foam gasket preinstalled.
I used it in combination with a Peerless SDS-100 woofer in a 2L net volume box (paired with a LaVoce TN100.70 for the highs), and this leads to an extended response down to 50Hz (-10dB); with some DSP correction (mainly boosting around 50-60Hz), the bass is astonishing for the size of the box, and the passive radiator has plenty of excursion to match the woofer.
The parameters i found online for the passive radiator are the following:
Fs 23 Hz
Qms 10
Rms 0.67 Ns/m
Mms 48 g
Cms 1 mm/N
Vas 10.4 L
Sd 87 cm^2
Xmax 6 mm
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