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In the Forum: Playback Listening
In the Thread: Remedies the Beauty
Post Subject: Towards Dannoy bassPosted by N-set on: 5/10/2024
I laid my hands on WinISD speaker modeling tool, which seems to be quite popular and widely used. It can model passive radiators too.
Here are the simulations of my idea of the Dannoy bass: Scan Speak active + Scan Speak passive in the same box as the Dannoys (89l or 37Hz).
The amplitude graph (unfiltered) shows the "Dannoy rise" around 50Hz:
The simulated (unfiltered) phase shows two characteristic for PR phase jumps at Fs and F_box:
For comparison here are the actual measurements of my Dannoys in my room. To be honest, everytime I measure I get somewhat different plot so no idea how reliable that are:
But: 1) the phase discontinuity around Fs is there like it should 2) The second phase jump is at 30Hz rather than at 37Hz, which is due to Tannoy Red driving the box, not the Scan Speak as in the simulations above 3) there is a phase jump at 60Hz (persistent at all measurements) which i'm still scratching my head what it is.
The goal is to match and reinforce the Dannoy bass without spoiling it: Dannoys run unfiltered, the Bass 4th order cut at some 50-60Hz.
Gentlemen, what do you think? Will it match or not really? Any comments?
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