We made pioneering use of Laser Doppler Interferometry to analyse the cone behaviour of an original Celestion Blue. We could then form a precise model of the vintage speaker’s characteristics and apply it to a speaker design using new materials for greater power handling.
It was found that Celestion’s ‘H’ magnet came closest in performance to Alnico. This was partnered with a new cone and new coil assembly employing modern materials with similar mass and physical properties to the originals, but better able to handle the extra heat generated through operating with higher power equipment.
Features:
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Magnet type Ceramic
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Power rating 60Wrms
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Resonance frequency, Fs 75Hz
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Sensitivity 100dB
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Voice coil diameter 1.75", 44.5mm
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Voice coil material Round copper
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Mounting Information
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Cut-out diameter 11.1", 283mm
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Diameter 12.2", 309mm
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Magnet structure diameter 6.1", 156mm
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Mounting slot dimensions 0.31", 7.9mm Ø
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Mounting slot PCD 11.7", 297mm
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Number of mounting slots 4
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Overall depth 5.3", 135mm
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Unit weight 10.4lb, 4.7kg
Includes:
