I have two pair of Celestion Ditton series 12” woofers. One pair has the small dust caps, the other the large. I also have one pair of the Celestion passive radiators. Measuring with DATS there are differences between the versions. (These numbers are an average of the pair’s figures)
Large Cap Small Cap
FS 23 hz 18 hz
Qts .335 .259
Qes .353 .270
Vas 223 lt 412 lt
Type 2619 1600
Does anyone have any insight as to which version would have been used in which Ditton – ie: 66, 44. 25? Also, were the passives from the 66 and the 25 the same? If not, how does one differentiate as I can find no identifying markings on them?
Large Cap Small Cap
FS 23 hz 18 hz
Qts .335 .259
Qes .353 .270
Vas 223 lt 412 lt
Type 2619 1600
Does anyone have any insight as to which version would have been used in which Ditton – ie: 66, 44. 25? Also, were the passives from the 66 and the 25 the same? If not, how does one differentiate as I can find no identifying markings on them?