Celestion HF1300 assembly

[bnilsson]

Hi all,

I am about to replace the voice coils of a pair of burntout Celestion HF1300 from the seventies.
I will probably be successful in the coil replacement, but I realise I have made a bad mistake in the disassembly.
I forgot to write down / take an image of the order of the stack of paper / phenolic rings holding the membrane.

I have:

1 thick phenolic resin composite ring
1 thick cardboard ring
2 thin cardboard rings
1 phenolic diaphragm w. voice coils
1 metal grille
1 magnet assembly
1 plastic housing

What is the order of assembly of the rings?

I hope there is someone still alive that has serviced such archaic parts.

Regards,
BN

 

[planet10]

Hmmm… i have disassembled a few, hoping sometime, somewhere some new “butterflies” could be found. Still have a pair sitting on my hot water heater, VC, diaphram gone, but the spacers might still be there.

dave

 

[PeteMcK]

This guy may be able to help
https://www.youtube.com/channel/UC_sacPWzRAWVyG5xOkx0Eeg/videos

 

[Glenn E]

BN, I suggest you check the Spendor Users Group site. You will have to register but there is a wealth of information there about early Spendor speakers that used the HF1300 units. A number of the members are very familiar with the HF1300 construction and performance and very happy to answer questions. As I recall, there is a resource document in the resource section that has the information you are chasing. I seem to recall that the order of fitting of the gaskets depended on the measured performance of the unit in some speaker models and may not necessarily have been the same in all units. The build quality in some of the HF1300s was quite variable appraently. Best of luck. Glenn

 

[bnilsson]

Thank you all for very useful advice.
I found the answer in the Spendor User Group!
HP1300 Diaphragm Replacement instructions attached.

BN