1665 plexi a T19?

[davie489]

Hi there

I need some help…. I have two 1665s a mk1 with a true dome D39 which I love and it replaced a service plexi which I didn’t like. I have now recently purchased a mk2 with what I believe is a t19 am I correct? It doesn’t have the 1mm side wall and is flush with the insert or is it something else which could be correct? It has a slightly flatter top to it . Could it be a t39 dome instead of being a superdome?
Thanks

[oysterfisher]

As far as I know, the T39 has a different diameter than the T19.
I tried to install a T39 a few years ago on my 9411 and this didnt worked. A T19 is working.

As far as I saw in the internet listings, the T39 is just a SD1665 crystal.

[Arnozerosix]

@Oysterficher, both are working on a sub 5512/13 but the t39 looks a bit exaggerated on the Subs...

@Davie, in fact the crystal profile on your photo is close to the one of the t19...

[Filipão]

Originally Posted by oysterfisher

As far as I know, the T39 has a different diameter than the T19.
I tried to install a T39 a few years ago on my 9411 and this didnt worked. A T19 is working.

As far as I saw in the internet listings, the T39 is just a SD1665 crystal.

T19 will fit both Sub and SD.

OP has one D39 and a T19.

[decisive]

Originally Posted by oysterfisher

As far as I know, the T39 has a different diameter than the T19.
I tried to install a T39 a few years ago on my 9411 and this didnt worked. A T19 is working.

As far as I saw in the internet listings, the T39 is just a SD1665 crystal.

T39 will work on the 5512/5513, it will just sit taller and look exaggerated.
You can’t used a T19 on a 1665 due to the wall height.