Replacement Speakers. The old chestnut that never quite goes away..

[VTypeV4]

Very recently, I picked up an exceptionally cheap Ashdown 2x10 cab. It works perfectly and sounds really very nice but I want to use it with all my amps so it needs to be 4 ohms not eight. The V4 will operate happily at eight but the Ampegs, Beavis and the V6 need two or four..

 

I've looked at various drivers and a while back, remember modelling some Celestion Pulse (not the XL) in the very similarly sized Trace Elliot 2x10 cab with seemingly favourable results. Frustratingly, my Eminence cab modelling software doesn't like this computer.

 

The cab itself is just over 100 litres and tuned to around 50Hz. Tonally, I'm after non-rising-rate mids so a smooth, flat-ish response and the Celestions seem to fit the bill quite well.

 

Has anyone done similar or used different drivers and found great results?