{ "numMessagesInTopic": 13, "nextInTime": 1071, "senderId": "X0Y4Yho6Rj1_9rkB0DulnYVavq9mPnXvPf8S2T85wh8vXPz2PnyNxCDmx3R8GceMVeEsPz8IyaC85ekIQRQ0XieQ6ms", "systemMessage": false, "subject": "Re: 01V96 as a crossover ?", "from": ""Carol" <frankwa@...>", "authorName": "Carol", "msgSnippet": "... post. I have a few questions for ... for example in addition to the ... midrange driver, do you calculate ... feet into the audience from the PA ... than", "msgId": 1070, "profile": "petpeavey", "topicId": 1024, "spamInfo": { "reason": "0", "isSpam": false }, "replyTo": "LIST", "userId": 8787581, "messageBody": "
>post. I have a few questions for
\n> Thanks for the excellent posts Doug and to Gary for his latest
\n
> both of you. Do you compensate the delay for each frequency range,for example in addition to the
\n
> time delay from the drummer or from the distance of horn driver tomidrange driver, do you calculate
\n
> for wavelength energy at given frequencies. IOW, let's say at 200feet into the audience from the PA
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> array, the lows are going to have more energy and be more profoundthan the highs, than at 20 feet
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> in front of the PA. Would you compensate for this frequency atdifferent distances? Would you do it
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> with gain instead of delay? How do you know exactly where to setthe ref mic when testing. How long
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> does it take to align the PA drivers as to your instructions. Thiswould have to be re-tweaked at
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> each different venue, would it not, or once done, does that carryover to any veneu?
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>around a PA side, that I hear it, but
\n> I'm acute to phasing Doug and can't say that when walking
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> than again I have no comparison as I haven't delayed the horn andmids in this way. With my full
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> range cabinets which I prefer to use, BTW they cost about twice asmuch as regular 2 or 3 way
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> cabinets that need to be bi-amped or tri-amped. Do you think thatthe horn to mid delay phenomenon
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> is already compensated for by the tube x-over system, that isinternal to the cabinets? The reason
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> that I'm asking is that I heard an immediate improvement when Iwent from JBL tri-amped to the
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> Community full range cab's. Perhaps if my JBL 3 way's were delaycompensated as to your
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> instructions, I may not have noticed such a profound improvementwhen I bought the full range cab's.
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> The only time that phasing was a problem to me was when I receiveda cabinet that had the speakers
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> wired opposite phase. The top speaker had the negative and postiveconnections to the speakers
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> reversed from the bottom speaker. One speaker was excursivelypushing while the other was pulling. I
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> changed the wires on the negative pulse speaker and it fixed that,I chalked it up to a trainee on
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> the assembly line at the factorys lack of exerience, a mistake by aseasoned employee or the worker
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> was just trying to screw with the person that was to eventually buythe cabinet. What gets me is how
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> it slipped passed QC.only 14 samples, or about .3ms. Of
\n>
\n> On the signal pass Doug, through the board set at 44.1, it's
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> course at 96k around 29 samples would make up .3ms. IOW, when youcompensate channel delays for thru
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> input it would be much lower than the 1.2ms that you predictedbelow. As I mentioned at 44.1 it
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> would only be 14 samples/.3ms.input (pun not intended). :O)
\n>
\n> This is a great discussion, thanks so much, to both of you for your
\n
>get out of here for a couple of
\n> I'll check out your url links Doug when I get back, I'm fixing to
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> days of some much needed rest and overdue kinfolk interfacing. :O)I'll respond to a few more posts
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> on the newsgroups and than I'm on vacation.
\n>
\n> Y'all have a Merry X-mas and Happy Holidays.
\n>
\n> Keep On Trackin'
\n>
\n> Ronny Morris - Digitak Mastering
\n> http://208.191.230.169/wbbs/Digitak/index.php
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