[Subconscious Auditory Effects of Quasi-Linear Phase Loudspeakers]

Chris, thanks for detailed how-to. In the end you apply some filters I guess, not just leave the individual PEQs for Low and High, right?

[Subconscious Auditory Effects of Quasi-Linear Phase Loudspeakers]

So that orange phase line is from an IIR filter? 

Is there a 'secret' to get that nice phase?

Earlier you said you use 1st order crossover and some PEQ. I cannot get the phase so good using IIR filters..

[Subconscious Auditory Effects of Quasi-Linear Phase Loudspeakers]

Chris, have you tried also FIR linear phase filters? I wonder what you think about the sound when phase is flat from 80hz or so (maybe lower if you have enough taps in the hardware).

[Subconscious Auditory Effects of Quasi-Linear Phase Loudspeakers]

Can you post a no-EQ and no filter response of the TAD-4002 please?

[Subconscious Auditory Effects of Quasi-Linear Phase Loudspeakers]

Wow! that yellow phase!

Impressive!

[Subconscious Auditory Effects of Quasi-Linear Phase Loudspeakers]

Thanks Chris for the explanation, I thought you were referring to FIR pre-rise time.  

 

I am about to start fabricating a K402 clone. Thinking about what CD to buy, so this next question is: Did you try also 1st order crossover with normal 2" CD or just with the coaxial BMS that you use? 

 

Thanks!

[Subconscious Auditory Effects of Quasi-Linear Phase Loudspeakers]

Hello Chris,

Thanks for the content and plots you posted in this thread.

 

Regarding the pre-rise of the step response seen with FIR filters usage, what is your obsevation? Do you have some best practices tips for obtaining a small pre-rise? Number of taps maybe (more or less ?, if the hardware can take it), windowing?

 

I do my filters with rePhase and clearly hear that using FIR filters the sound is not so 'clean'/'crisp' than using simple IIR filters in EqualizerAPO engine. But then again, the phase is more liniar using liner-phase FIR filters.