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Neil Purling · 27th Oct 2018, 8:46 am

I was thinking of a 5" field coil speaker & the chassis that needs it has little room for a choke, unless it was very small. It depends on how many Henries value the OE field coil was & the HT current drawn through it. Probably why a field-coil speaker was used, even in a 1939-40 radio.

I shouldn't have thrown out the defective speaker obviously. Someone on this Forum might have been able to help getting it re-coned. You know how 'crispy' very old paper gets.

27th Oct 2018, 8:46 am	#4
Neil Purling Nonode Join Date: Jul 2005 Location: Hull, East Yorkshire, UK. Posts: 2,087	Re: Field Coil Speaker I was thinking of a 5" field coil speaker & the chassis that needs it has little room for a choke, unless it was very small. It depends on how many Henries value the OE field coil was & the HT current drawn through it. Probably why a field-coil speaker was used, even in a 1939-40 radio. I shouldn't have thrown out the defective speaker obviously. Someone on this Forum might have been able to help getting it re-coned. You know how 'crispy' very old paper gets. Last edited by Neil Purling; 27th Oct 2018 at 8:54 am.