The Duplex affect --an experiment

[Ron Nossaman]

> It's natural to want the impossible so here goes.  I wish we could test
> whether the "duplex sound wonderfulness" could be duplicated without
> front duplex by normal hammer voicing.  In other words, if there is no
> front duplex do we lose something that can't be replaced by control of
> the hammer.
> 
> dp

You have one there with the tuned duplexes eliminated, what do 
you think? Do you miss the duplex sound wonderfulness? The 
SD-10-B I did for Bob Hull has an effective front duplex 
segment length of about 10mm. Neither of these duplexes make 
noise that I can detect, and to my ear, both pianos sound 
better than new stock. So what's a tuned front duplex that's 
intended to make noise for, exactly?
Ron N