impedance of the hf2000 (from ditton 66)

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WayneSwann

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Joined 2010
Replacenent of Celestion HF2000 tweeters used in the Celestion Studio 66 Monitiors

I have a pair of Celestion Studio 66 Monitors and need a replacement for the HF2000 tweeters. Has anyone found a successful replacement since these rather old threads/questions were posted:confused:?
 
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WayneSwann

Member
Joined 2010
I have taken the advice of Wimslow Audio and installed a pair of MOREL CAT 298 (modified with a 94mm face plate) into my Celestion Studio 66 Monitors. At the first low volume testing they sound pretty good. Their existing tweeters installed by their previous owner were a pair of rather cheapo 'Realistc' (Radio Shack) horn super tweeters. I think the problem I have found with the various bits of information placed by other members has somehow become rather obsessed with the fact that the original HF2000's were described as 'Super-tweeters' with a frequency response from 5000Hz up-to 40000Hz. As far as I understand the adult human cannot hear frequencies much above 20kHz. The MOREL's have a range of 1.8 - 20kHz. They certainly sound much better than the previous 'Realistic' tweeters which were extremely tiring to listen to for any length of time due to the edginess at the top end. I think the real star of these speakers are the mid-range drives, which are excellent in my opinion. I'm not convinced that the passive ABR is a complete success. I have also changed the binding posts, upgrading them to a pair of high quality gold plated units. I have changed the internal wiring using 'Chord Rumour Install' wire. These are 14 AWG silver plated copped stranded cables. I understand the original cables were 18 AWG silver plated copper cables. They just seemed very thin and insubstantial. Bearing in mind that when these speakers were produced amplifiers rarely exceeded output of 70 - 80 watts. Like a lot of enthusiasts I have spent a lot of time,effort and money on the speaker wires connecting the speakers to the amplifier and it just seemed sensible to use the equivalent high quality cables inside the speakers? I would now like to upgrade the crossovers. But I must admit the prospect of doing so seems to be rather a daunting task. I have found a schematic within the pages of this extremely valuable tool (DiyAudio). I have asked Wimslow Audion to provide me with the latest equivalent high quality replacement components. I understand it will be the capacitors only which will need to be replaced? I am writing this really to obtain some feedback regarding the assumptions and methodology I am adopting. I know that these questions were first raised back as early as 2004, and have been spread over many Threads. What I would like to do is to manage to amalgamate all of the knowledge regarding the upgrading these beautiful speakers in the best possible way bearing in mind that the original drivers etc are no longer available.
 
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