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Old 21st February 2003, 06:40 AM   #1
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Question DSP emulations of different 'classic rock amps'

http://johnson-amp.com/jstation.htm
has a choice of eg 24 amp "emulations" etc, including Marshall, Vox etc!
For $140 on a switchable basis, say a tape loop, maybe would be fun (depends on the subtlety and controllability or otherwise).
(Line 6, Behringer etc also do them)

In a home sytem, it might do least signal degradation routing digital out from CD into such a beast, doing its DSP, then going into a DAC.
You would probably only do it on mediocre quality rock recordings, but that's many of them.

What do you think?
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Old 21st February 2003, 12:35 PM   #2
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Default Didn't Hafler do this in the 80's

he did a series of experiments for audio magazine writers in which, viewing the amp or preamp as a black-box, he emulated the sound of several highly expensive devices with much less expensive modifications of Hafler amps.
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Old 23rd February 2003, 05:21 AM   #3
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Lightbulb Parrallel digital crossover developments

Filtering on a computer is the way with greatest flexibility.
The Johnson ĎJ Stationí I mentioned is intended to run off a PC sound card in a home recoding studio. It doesnít accept digital in, but itís only $140, and Iím sure something else would eg from Line 6 or Behringer. Behringer is perhaps the price leader.

The field of DSPs is continually expanding, and DACs and ADCs are a lot better for less $ than a few years ago. Not the commercial products, but the evaluation boards.

Audiophile digital crossovers are (I think) pretty new Ė one was developed (last year?) for the Linkwitz Phoenix. Digital crossovers could be used in conjunction with DSPs.
Anyone know of other recent digital crossover developments?
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Old 23rd February 2003, 06:55 AM   #4
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I am developing a loudspeaker system with DSP based crossovers for a senior electrical engineering project this semester. Should have results by end of May


Mark
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Old 23rd February 2003, 09:39 AM   #5
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Meridian have had digital x-overs for at least the last 10 years. The first digital room correction system I can remember appeared around 10 years ago as well.

ray.
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Old 24th February 2003, 12:56 AM   #6
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Default diy digital crossovers

When I said "Audiophile digital crossovers are (I think) pretty new" I should have said in the diy realm, rather than in big bucks (Meridian) league.
Anyone built one successfully?

TIA
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Old 28th February 2003, 11:43 AM   #7
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Default suitable, with EQ

A much better choice than the aforementioned J station, would be the Boss VF-1 (by Roland).
It does 20 emulations, and includes a 10 band EQ, with some parametric options.
24 bit in & out. 30 bit internally.
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Old 28th February 2003, 12:47 PM   #8
dimitri is offline dimitri  United States
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to mark: I hope you will put your project on http://www.hayenga.com/mark/

to rick57: Here is some links http://www.geocities.com/john_wr2000/links.htm
but it seems that there are no practical realisations. The only one crossower (working) is in LSPpro software ($500) and as another option I am waiting for Behringer dcx 2496 ($400).
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Old 2nd March 2003, 01:22 AM   #9
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Default Digital xover

There's also the dbx driverack PA:
http://www.driverack.com/PA.htm c. $Us 500
I'm told it sound better than the behringer DCX 2496

Thanks. I'll check those links
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