Reconing 2231A

[hanad400]

Hello forum

My first post here, greetings to all, a nice place for discussions and technical help. My question: I have to recone a pair of 2231A with the 2235H kits, should I mount the mass ring, why or why not. The 2231A are from my 4341. Thank you for your help
Regards, Günther

[edgewound]

Hello forum

My first post here, greetings to all, a nice place for discussions and technical help. My question: I have to recone a pair of 2231A with the 2235H kits, should I mount the mass ring, why or why not. The 2231A are from my 4341. Thank you for your help
Regards, Günther

Welcome to the forum Gunther...Where are you from? I'll guess Europe, no?

For the 2231A (C8R2235)the manual says to mount the mass ring. It will keep the Fs closest to original specs...otherwise you'll end up with an Alnico equivalent 2234 which has Fs of 23Hz.

Fs for 2231A was originally 16Hz; for 2235H Fs is 20Hz.

[hanad400]

Hello Edgewound

Thank you for telling perfect why to use the mass ring. Yes, I´m from Europe, from Austria. Once again, a nice place for JBL and Altec friends, I´m happy to be in this forum.
Regards, Günther

[Anthony L100]

Hello forum

My first post here, greetings to all, a nice place for discussions and technical help. My question: I have to recone a pair of 2231A with the 2235H kits, should I mount the mass ring, why or why not. The 2231A are from my 4341. Thank you for your help
Regards, Günther

Hi Gunther, I also have 4341s with the original 2231As and I recently picked up a pair of 2225 baskets (same as 2235s) which I reconed with C8R2235 kits, but I left out the mass ring to yeild 2234s. I tried them in the 4341s with pleasing results IMO, slightly faster, tighter bass. They probably don't go quite as low, although I could not notice. I hope this helps. As you are not experimenting with spare drivers, I would be aware that there is no going back once the dustcaps are fitted! Good luck and please let us know what you decide.

Edgewound, have you ever reconed 2231As as 2234 and if so, was the result good? I'm considering this for my 2231s as the spiders are probably slightly tired by now. Thanks, Tony.

[edgewound]

Edgewound, have you ever reconed 2231As as 2234 and if so, was the result good? I'm considering this for my 2231s as the spiders are probably slightly tired by now. Thanks, Tony.

Hi Tony,

I've recently reconed 2225 baskets to a 2234H and the result was very good. As you probably know the 2234/35 kit has a slightly stiffer spider resulting in a slightly higher Fs.

This was an upgrade as far as the factory is concerned, and I feel makes for a more robust driver....the enclosures these drivers are tuned to are way above the free air resonance so what's the advantage? A driver that responds quicker mechanically and has the ability to be effectively used in a two way system, with a reasonably high crossover point.

But to keep the 2231 factory spec, I'd stay with the mass ring.

[hanad400]

Hello Edgewound / Tony

I´ll try reconing first without the ring, don´t fix the dustcap, listen to the result.
Thanks and Regards, Günther

[Anthony L100]

Hello Edgewound / Tony

I´ll try reconing first without the ring, don´t fix the dustcap, listen to the result.
Thanks and Regards, Günther

Hi Gunther, I think Edgewound will give you the definitive answer but, IMO not having the dustcap glued down will not give you a true impression as there will not be a seal between the front and rear of the cone, which will surely affect the tuning??

[edgewound]

... not having the dustcap glued down will not give you a true impression as there will not be a seal between the front and rear of the cone, which will surely affect the tuning??

This is true, yes.

[Anthony L100]

Hi Tony,

I've recently reconed 2225 baskets to a 2234H and the result was very good. As you probably know the 2234/35 kit has a slightly stiffer spider resulting in a slightly higher Fs.

This was an upgrade as far as the factory is concerned, and I feel makes for a more robust driver....the enclosures these drivers are tuned to are way above the free air resonance so what's the advantage? A driver that responds quicker mechanically and has the ability to be effectively used in a two way system, with a reasonably high crossover point.

But to keep the 2231 factory spec, I'd stay with the mass ring.

Thanks Edgewound, yes I guess i'll leave them in for the sake of original spec as I have the 2225s to experiment with