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Good Info!!

Thanks for the overview!

:)

Yes, you're right about your concerns about the Voice-Coil depth ( vis-a-vis ) being properly centered to the middle of a JBL's top-plate ( iow, the gap-depth alignment ).

That may need adjusting...

Thanks for those times Rob ( I hadn't yet gotten to those points ).

:)

Hi,

I'm glad that you all mentioned the 120deg horizontal dispersion of GT's custom printed horn ( after seeing the pic of his current system I was left wondering...

FWIW, I think your cone kit is actually from a Stage Accompany 1503 woofer.

Not that it matters much, since it's obviously compatible with the JBL magnetic assembly ( which SA copied when they...

Hi Silvanik,

My advice ( if you want to go 100% active-DSP ) would be to contact Harman International > get a recommendation from them for a qualified Synthesis technician for your area and then...

@MoD

MoD, the 75 grams measured weight obtained from a scale doesn't represent a drivers MMS

What you obtained by weighing your recone kit on a kitchen scale is more accurately called the...

The following list ( first linked to by RobH in his above post ) appears as one of Giskard's creations ( he was so good at this sort of thing that I imagine that he knew this all from memory ).
...

Cool patallen,

Your mystery 2225 recone will remain a mystery ( though FWIW, that rust-colored banding or glueline on the back is much more typical of a very specific generation of the 2226HPL...

Ian,

Thanks for demonstrating your complete understanding of the terms "MMS, MMD & Air-Load".

( Now to put it to use ), it would be helpful if you could puzzle-out why ( or offer-up a plausible...

Ian you're using the terms MMD & MMS backwards ( MMS = MMD plus air-load ).

That's definitely not helpful to this thread.

Go look at one of my early links posted in this thread ( to the...

The weight of my ( oem 2235H kit's ) dust-cap is 3 grams and the mass ring is 32 grams.

The kit is from @ 2001.

:)

One needs to entertain the possibility that JBL's TS numbers for the 2225H have always been wrong ( within their official documentation ).

After-all, JBL's numbers have proven to be wrong...

Thanks for implementing my suggestion to make your posts more readable. :thmbsup:

Now to your first question:

With the static weight of your eBay cone kit being around 105 grams, the missing...

Thanks for that! Denny

:)

@patallen,

It's appreciated that you attempt proper punctuation ( by including commas, periods, etc. ) in your sentence structures .
( Capitals, at the beginning of each sentence would help...

Thanks a lot Rob!

:)

2-Part Epoxy seems a reasonable choice for a part that might impact the pole piece ( inadvertently, of course ).

:)

Thanks Rob!

:)

@RobH3606

Hi Rob,

If you still own it, could you please publish the static weight ( including dust-cap ) of your JBL 129H recone kit ( I'll assume that you have an applicable kitchen scale...

[/quote]

I missed your most recent post.

Yes, I think you're ready to glue-up ( assuming things are also jiving with the GordonW info that I linked you to ).


:)

PS: I also have here a...

Thoughts??

If one looks at my pic of the OEM kit ( posted above ) the "collar" of the spider is pointing towards the voice-coil >> suggesting that you may have your spider flipped upside-down
...

Thanks for that.

Those kits seem to be real close to OEM JBL then , a good thing.

I notice I had a senior moment and changed a 1.25" measurement into a 4.25" measurement.

I'm going to...

What's the length ( height ) of your kit's Kapton former ( that the Voice-Coil is wound onto ) ??

OEM JBL ( from around year 2000 ) was @ 1.25" ( with about 1/8" sticking above the glue-line >...

I would certainly put re-edging out of your mind for the time being.
- As far as I'm concerned, the color change is normal for aging rubber compounds.

You might want to research if there are any...