| DJ-1800 and Leopard |
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Using DJ-1800 on Mac OS 10.5 ("Leopard") |
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We have had reports of an audio problem when using DJ-1800 v3.0.0 - v3.2.0 on Leopard. We implemented a workaround for this problem in DJ-1800 v3.2.1.
This page describes the symptoms of the problem. If you have been experiencing this problem, you should download DJ-1800 v3.2.1 or later.
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The problem |
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Starting playback of a second track may cause a short audio dropout on an already-playing track.
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What is the cause of the problem? |
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This problem is caused by a bug in Leopard and QuickTime 7, rather than a bug in DJ-1800.
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When does this problem occur? |
This problem only occurs if:
- You are using Mac OS 10.5 ("Leopard")
- You are using DJ-1800 v3.0.0 - v3.2.0
- Pitch Lock is turned on in DJ-1800
- The internal (on-screen) mixer is being used (output modes "Mono + Mixer" or "Dual + Mixer")
- The same output device is being used for both the Live and Headphones output
- This is always the case for "Mono + Mixer" mode
- This will only be true for "Dual + Mixer" mode if you don't have a second audio device for your headphones
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I use DJ-1800 v2.2.2. Will I experience this problem? |
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No. This problem only affects DJ-1800 v3.0.0 - v3.2.0, in a very specific set of circumstances, described above.
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I use DJ-1800 v3.0.0 - v3.2.0 on Mac OS 10.4 ("Tiger"). Will I experience this problem? |
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No. This problem only occurs on Mac OS 10.5 ("Leopard").
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I use DJ-1800 v3.2.1 or later. Will I experience this problem? |
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No. This problem only affects DJ-1800 v3.0.0 - v3.2.0, in a very specific set of circumstances, described above.
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I don't use DJ-1800's on-screen mixer. Will I experience this problem? |
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No. This problem only occurs when using DJ-1800's on-screen mixer in the "Mono + Mixer" or "Dual + Mixer" modes, and even then only in certain circumstances, as described above.
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I don't use Pitch Lock in DJ-1800 v3. Will I experience this problem? |
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No. This problem only occurs when Pitch Lock is turned on, and even then only in certain circumstances, described above.
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I use the "Dual + Mixer" mode, and I play my Live audio through a different audio device to my Headphones audio. Will I experience this problem? |
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No. If you use a different audio device for Live and Headphones, then you will not experience this problem.
For example: if you use a MacBook laptop to DJ, you might plug your headphones into the MacBook's headphones socket, to listen to a new track before playing it live. You might then use an external audio device - such as a Griffin iMic - to play your live audio to an amplifier. In this setup, you would not experience the problem described above.
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I use the "Dual + Mixer" mode, and I play my Live audio and Headphones audio through the same device. Will I experience this problem? |
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Yes. If you play Live and Headphones through the same device - even if you use different channels on that device - then you will experience this problem. (But only if you are on Leopard, using DJ-1800 v3.0.0 - v3.2.0, with Pitch Lock turned on.)
For example: you might use a GigaPort AG, which has 8 mono output channels. You might use channels 1+2 on the Gigaport for your live output, routed to an amplifier. You might then use channels 3+4 on the Gigaport for your headphones. In this scenario, you would experience the problem described above.
To avoid this problem, you should download DJ-1800 v3.2.1 or later.
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I use the "Mono + Mixer" mode to practice DJing in mono without using an external audio device. Will I experience this problem? |
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Yes - if you use Mac OS 10.5, DJ-1800 v3.0.0 - v3.2.0, and have Pitch Lock turned on.
To avoid this problem, you should download DJ-1800 v3.2.1 or later.
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