This is just a long shot and there is probably no satisfactory solution.
My Ditton 44’s are nearly 50 years old. I recapped them a couple of years ago and replaced the tweeters with Seas 19TFF1’s. (Thanks alan-1-b and others). I spent a lot of time fine tuning the voicing with ERS compensating resistors and they sound beautifully balanced; in fact better than original.
I have a spare set of mid drivers. I did have a set of woofers but they both failed after 6 months so I put the good originals back. (I always put the ones I buy in the speakers and keep the originals as spare).
Sooner or later though these old woofers will also fail but I don’t want to buy another set of used T1600s (or T2619s), so the question is: are there any modern 12 inch woofers which will work in 44’s without too much alteration to the crossovers? I can mess about with caps as I have some spare ones but don’t want the change the inductors as the cost would make this exercise pointless. The plan would be to buy one driver and test it out.
Some candidate drivers are listed below. I could only find three as the impedance of the T1600 is 4 ohms. Maybe there are others though.
What are the most critical values?
If Vas is critical then the volume of a 44 cab is about 60 L.
I realise that there may be some speculative replies but it would be really helpful if any of you have actually done this or can definitively rule out any / all of the drivers I listed.
Thanks Gordon
My Ditton 44’s are nearly 50 years old. I recapped them a couple of years ago and replaced the tweeters with Seas 19TFF1’s. (Thanks alan-1-b and others). I spent a lot of time fine tuning the voicing with ERS compensating resistors and they sound beautifully balanced; in fact better than original.
I have a spare set of mid drivers. I did have a set of woofers but they both failed after 6 months so I put the good originals back. (I always put the ones I buy in the speakers and keep the originals as spare).
Sooner or later though these old woofers will also fail but I don’t want to buy another set of used T1600s (or T2619s), so the question is: are there any modern 12 inch woofers which will work in 44’s without too much alteration to the crossovers? I can mess about with caps as I have some spare ones but don’t want the change the inductors as the cost would make this exercise pointless. The plan would be to buy one driver and test it out.
Some candidate drivers are listed below. I could only find three as the impedance of the T1600 is 4 ohms. Maybe there are others though.
What are the most critical values?
If Vas is critical then the volume of a 44 cab is about 60 L.
I realise that there may be some speculative replies but it would be really helpful if any of you have actually done this or can definitively rule out any / all of the drivers I listed.
Thanks Gordon
