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Problem with Jack Audio for Windows and Numark DJ/IO
Problem with Jack Audio for Windows and Numark DJ/IO
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Old 15th May 2012, 11:34 PM   #1
emzero is offline emzero  Argentina
diyAudio Member
Join Date: May 2012
Question Problem with Jack Audio for Windows and Numark DJ/IO

I need to use Jack to be able to route Traktor's output to a VST host so I can apply any VST effect.

I've followed the instructions provided here: Using JACK on Windows | JACK

I've edited the shorcut's Target as follows:
"C:\Program Files (x86)\Jack\jackd.exe" -R -S -d portaudio -d "ASIO::Numark USB Audio Device" -r 44100
"ASIO::Numark USB Audio Device" is a valid device listed when running the command: jackd -d portaudio -l

-------- device #18 ------------------------------------------------ 
[ Default ASIO Input ] 
[ Default ASIO Output ] 
Name                        = ASIO::Numark USB Audio Device 
Max inputs                  = 0 
Max outputs                 = 4 
ASIO minimum buffer size    = 512 
ASIO maximum buffer size    = 512 
ASIO preferred buffer size  = 512 
ASIO buffer granularity     = 0 
Default sample rate         = 44100.00 
But when I run the shortcut to start the JACK server I get the following:

jackdmp 1.9.8 
Copyright 2001-2005 Paul Davis and others. 
Copyright 2004-2011 Grame. 
jackdmp comes with ABSOLUTELY NO WARRANTY 
This is free software, and you are welcome to redistribute it 
under certain conditions; see the file COPYING for details 
JACK server starting in realtime mode with priority 10 
AudioSM::initAudioSM nChannels:0 nFrequency:0 
AudioSM::init nChannels is 0 
Allocate: named semaphore already exist name = jack_pipe.default_system 
Can't open ASIO::Numark USB Audio Device, PortAudio will use default input devic 
Pa_OpenStream error -9993 = Illegal combination of I/O devices 
Can't open default PortAudio device 
Cannot initialize driver 
JackServer::Open() failed with -1 
Failed to open server

Also, if I try to use Jack Control Setup to select the Input/Ouput, when I click in the arrow that popups the device list, the program crashes.

Any ideas?

My setup is:
-Core2Duo 2.2ghz
-4gb RAM
-Windows 7 x64
-Numark DJ/IO USB soundcard
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Old 27th May 2012, 02:55 AM   #2
loninappleton is offline loninappleton  United States
diyAudio Member
Join Date: Feb 2004
Location: Appleton, WI
Well I don't know jack about this ;-) and haven't tried to apply the Jack program since experimenting with Linux a couple years ago.

A 'wrapper' may be needed as it is to apply VST effects.
Example, the free George Yongh 'wrapper' provides the ability to install VST effects.
A more common (but costly) wrapper is Cubase which is a pay-for program.
I don't know jack about Cubase either. But it's better than getting no answers at all.

I think Doom9 is a good place to address these crossover questions between Linux and Windows.

My system

AMD Athlon II x3 450 Regor 3.2 Ghz
MSI 880GM-E41 mainboard
Kingston DDR3 Hyperx/fb 2x2Gb
Seagate Baracuda 160Gb IDE HD

no outboard audio card.

Last edited by loninappleton; 27th May 2012 at 02:59 AM.
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