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Updating/Replacing Scanspeak D2905/9000

J

juz400

pfm Member
Looking to update a pair of Scanspeak D2905/9000
Cabinets cannot be altered in any way, meaning dimensions must match the originals especially
the magnet assembly

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They are paired with Focal 7W4411 midbass drivers, their response curve

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Im using MiniDSP with 4th order around 2Khz and a little tweeking to get rid of the peak at 1.2Khz
Umik 1 and Holmimpulse results seem ok but I just installed the software, rigged the mic about 12"
away from the speaker plugged it in. Loaded the mic calibration file and run the sweeps.
No real setup at all

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The linear excursion of the D2905/9000 is 0.05mm with a max of 1.5
so crossing at 2Khz is right on the limits and maybe asking a little too much of it considering
its age now (No mention of any ferrofluid on specsheet)

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The Obvious choices are

D2905/930000
http://www.scan-speak.dk/datasheet/pdf/d2905-930000.pdf

D2905/950000
http://www.scan-speak.dk/datasheet/pdf/d2905-950000.pdf

D2905/970000
http://www.scan-speak.dk/datasheet/pdf/d2905-970000.pdf

D2904/980000
http://www.scan-speak.dk/datasheet/pdf/d2904-980000.pdf

Which would you choose and would you alter the crossover frequency (lower/higher)
I see that the 980000 has a different dome structure to the other 3
https://www.rumoh.eu/gb/spare-parts
are there any pros/cons to look at, could this unit be crossed to lower?

Many thanks for looking
Justin
 
A german diy loudspeaker mag, Hobby hifi, has just recently used the D2905/93000 in one of their projects and raved over how good the tweeter is.
Very low distorion and a resonant frequency of about 700Hz, they stated you could use the tweeter down to about 1500Hz without any problems.
It is very similar to your existing tweeter so I would probably go for that one.
If you have the mini dsp you could try out a slightly lower crossover frequency, 1800Hz?, and see if you like it better.
I wouldn't bother trying a higher crossover frequency as your Focal driver has 2 spikes at about 2700Hz and 3700Hz which would become more apparent.
Don't forget that all the Focal and Scanspeak published curves have little to do with their actual response when fitted in your cabinet (baffle step, refractions)

I probably wouldn't change the tweeter at all, just get it serviced with some new ferrofluid (original viscosity spec).
 
Not sure why the treble rolls off like that. Are you using baffle step correction with the Focal woofers?

Edit: Try taking the measurement on the tweeter axis.
 
If you're still in the market, I have a pair of D2905/9000 scanspeaks that I used for speakers in our living room that's seldom used for entertaining, so the tweeters are used but in excellent condition. I bought these new many years ago. IMO, they sound better than their descendants, the dynaudio d28. I recently matched the tweeters with other dynaudio parts for a new project and am thinking of using all dynaudio parts, so if I can get a decent offer that will sponsor part way towards some esotecs, I will consider selling them. Let me know. Jerry
 
Jerry lopes said:
If you're still in the market, I have a pair of D2905/9000 scanspeaks that I used for speakers in our living room that's seldom used for entertaining, so the tweeters are used but in excellent condition. I bought these new many years ago. IMO, they sound better than their descendants, the dynaudio d28. I recently matched the tweeters with other dynaudio parts for a new project and am thinking of using all dynaudio parts, so if I can get a decent offer that will sponsor part way towards some esotecs, I will consider selling them. Let me know. Jerry
Click to expand...
Hi Jerry im interested in the d2905,s ypu mentioned. ..are they still available? If they are could you please call me on 0434911737 thanls jon
 
I've used both the 9300 and 9500 variants of the 2905. I found the 9300 more natural sounding and that would be my recommendation to replace the 9000.
 
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