Recent content by Paulthefirst

Sinclair Project 60 self-assembled modular system (ZX30 PA modules) ~1970 (started when still at school!) Sinclair Project 60 upgraded to bridged ZX50 PA modules ~1972 Radford HD250 ~1976 Musical Fidelity The Preamp 2a + P170 ~1991 TAG McLaren PA10 preamp (MF P170 retained) ~2007 Triamp...

Some designs of that era with 4-way drivers used same Celestion HF1300 tweeter with a Coles 4001 supertweeter, while others used the HF1300 with KEF T27 as supertweeter - that tends to suggest the T27 to replace the supertweeter not both the tweeter & supertweeter, though whether the crossover...

I have some pics taken during costruction (incl failed) - have to sort out. Peerless driver was XXLS830843, which actually modelled best of at least a dozen potential drivers that I'd taken through Martin King's software while working up my original design (more info on page 7 of this...

Since my last post in Oct 2008 I've been busy playing! I had decided not to touch my IMFs, but to build something intended to be as good, from scratch. I thought of a novel physical external layout that would provide great flexibility and WAF, and thought I'd try first with total volume a bit...

With thanks to all for their comments. I've given this much thought, and on the basis of advice from everyone who has contributed, and some modelling using Martin King's software, I'm not for now going to tamper with the IMFs, but instead try to duplicate the performance in a different shape...

All responses re my possible IMF upgrade/revamp appreciated. For the record, I am not interested in secondhand value, only in possible improvement (& long term sustainability, given their age and decreasing availability of replacement drivers). Cabinets are sound. Now, I rather imagined...

Hi, I stumbled upon this site/thread while trying to decide what to do – replace my IMF Professional Monitors with more "spouse friendly" standmount speakers + subs, or to revamp the IMFs. The money would be easier to justify for the former of course – and there is the third option of doing...