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rdrysdale wrote:

We are using about an 18 foot path for the sub. What we need is for some smart electronics guy to design and build a processor just strictly for time correction, and nothing else, no EQ, or crossover built in.

Hey, good luck. To make ~7mS full range delay at the level more demanding then an average professional studios do is very complex. At least I was not able to find anyhow who would be able to challenge it. The biggest problem in there to let those “smart electronics guy” to understand the demands and the level of reference points of playbacks where this delay processor would be used. Pretty much everything starts from the ability of that “smart electronics guy” to make an absolutely transparent buffer when you plug the system with and without the buffer the sound should not be changing. The problem is that 99.99999% of those “smart electronics guy” have no idea if Sound would be changed; the distortion pastern in there is not really indicative. The ironic part is that when I spoke with 0.00001% of the “smart electronics guys” who know what I meant then they informed me that to do what I was asking is imposable.

If I use only digital then it would be easy to use 2 DACs with a delay in one of them. But if I use analog then I see not good solution. Analog delay will not work out at HF, to place a DA/AD chain into the signal path sound too barbaric, although the DA/AD processing do not do DSP. Perhaps a super expansive delay tape machine from 50s would do? :-) To be serious only because I was not able to resolve this problem I abandoned this direction… though I keep in my storage a few AK151 and crave that I will go for it sometimes…

rdrysdale wrote:

I will soon have an excuse to come to Boston, my niece has been accepted to the Boston Conservatory, I'm sure I will need to come out to see her perform.

Great, I live 5 min walk from Boston Conservatory.

The caT

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