Most of us ( who have been here long enough ) know that JBLs' official "MMS" figure for the 2234, is well,,, it's bogus .
- That figure is best interpreted as "MMD" ( which is static cone assembly weight / with no air load ) .
The weight looks good / but the voicecoil former ( just like the OPs ) is somewhat too long . It should be 31.75 mm .I have a reproduction recone in parts which is weighing 106 gram +/- 2 ( spider, voicecoil and cone, no glue)
Voicecoil former: 37.9 mm
Voicecoil height: 19.1mm
<> EarlK