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No longer available
This woofer is no longer made in this frame size. It is available as the new H1411 (A26RE4) in the 269mm frame. It probably won't fit an old Dynaco A25 without some changes to the cabinet.
Seas 25F-EW 10" Paper cone woofer
New part number A25RE4 H0085.
Replacement woofer for Dynaco A25 speaker
Purplish untreated paper cone with rubber surround.
Cast frame with dimensions:
Frame diameter 261mm (10.27")
Cut our diameter 228.5mm (9")
Depth 82.5mm (3.25")
Note: Some very old Dynaco A25 woofers used a different frame, so check the size. This is still the very best 10" for a 2-way system, so make it work anyway! This frame is the same as a spec sheet from 1985.
We recommend using this driver in a sealed box of around 1 cubic foot. The F3 is about 60Hz and the F6 is about 50Hz. It has a very nice roll off on the top end and could be used without a crossover! We recommend trying it with the Seas H1189 tweeter. A 10" 2-way is not a studio monitor speaker, but it does have a very warm and pleasant retro sound, especially when the woofer is run full range without a crossover.
Fs 26Hz
Sensitivity 89dB
Power 70W
Re 5.8 ohm
Nominal Impedance 8 ohm
Vas 175 liters
Qms 3.8
Qes 0.39
Qts 0.35
VC diameter 39mm
X-max peak 4mm
Sd 350 cm2
Ms 33g
Cms 1.6 Ns/m
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