Roland TR-909 Help

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mark andrews
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Roland TR-909 Help

Post by mark andrews » Fri May 11, 2007 7:11 pm

Got a bit of a problem, Today when recording my 909 into logic I noticed that when recording the bass drum on to a mono channel that the top part of the waveform (when I zoomed out) looked almost horizontal as if just the top had been compressed.

I thought it might have been something to do with my mixer so to be sure took a jack to BD straight to my sound card.... Still the same prob

I can email the waveform if it helps

Do you think something is up with the 909 and can it be fixed??

Tried the HH's and the waveform on these looked normal

Any help would be great

Thanks

Mark

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micahjonhughes
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Post by micahjonhughes » Fri May 11, 2007 7:31 pm

Does it sound distorted on playback?

Have you tried recording the TR-909 at a lower output level?

mark andrews
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Post by mark andrews » Fri May 11, 2007 8:11 pm

I don't think that is the problem but thanks for the reply.

It's as if one side is slightly louder, but I don't know why. I'm getting confused to be honest as I thought mono meant it only has one side

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Dirk
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Re: Roland TR-909 Help

Post by Dirk » Fri May 11, 2007 8:18 pm

mark andrews wrote:Got a bit of a problem, Today when recording my 909 into logic I noticed that when recording the bass drum on to a mono channel that the top part of the waveform (when I zoomed out) looked almost horizontal as if just the top had been compressed.

I thought it might have been something to do with my mixer so to be sure took a jack to BD straight to my sound card.... Still the same prob

I can email the waveform if it helps

Do you think something is up with the 909 and can it be fixed??

Tried the HH's and the waveform on these looked normal

Any help would be great

Thanks

Mark
This is perfectly normal.
Most 909's have 25ms flat before the decay starts.
It's the (one of) reason that the 909 kick sounds so powerfull.
All Animals Are Created Equal But Some Are More Equal Than Others.

mark andrews
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Post by mark andrews » Fri May 11, 2007 8:24 pm

Nice one mate.

Think I'm even more confused now though. Any chance you can PM me your email and I can send the file for you to look at?

Thanks again

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Post by mark andrews » Fri May 11, 2007 8:37 pm

If that was the case wouldn't the bottom of the waveform have that flat as well??

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Post by nathanscribe » Fri May 11, 2007 8:47 pm

Are you talking about an amplitude waveform, or an oscillator waveform here?

The 909 kick audio wave in my limited experience resembles a clipped sine or a slightly rounded square, whichever way you want to look at it. And yes, that wave is symmetrical. A wave to show volume would only be positive-going, and would show an initial peak followed by a tail-off. Maybe a picture would be useful.

mark andrews
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Post by mark andrews » Fri May 11, 2007 8:50 pm

nathanscribe

I have sent you a PM mate.

Cheers

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Hope thid helps

Post by mark andrews » Fri May 11, 2007 9:51 pm

Image

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Stab Frenzy
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Post by Stab Frenzy » Sat May 12, 2007 3:41 am

Looks like maybe the caps are getting a bit old and aren't supplying enough voltage for a full swing on the output section.

The important thing though is how does it sound? If it sounds good there's no problem. A lot of what's called 'vintage warmth' is things not quite working like they did when they were new, you fix it and then you lose your vintage sound.

I wouldn't worry about what it looks like unless the sound is giving you problems. :thumbleft:

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Post by mark andrews » Sun May 13, 2007 5:15 pm

Image

Here is a single kick zoomed in

Acid Mitch
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Re: Roland TR-909 Help

Post by Acid Mitch » Sun May 13, 2007 6:48 pm

mark andrews wrote:Got a bit of a problem, Today when recording my 909 into logic I noticed that when recording the bass drum on to a mono channel that the top part of the waveform (when I zoomed out) looked almost horizontal as if just the top had been compressed.

I thought it might have been something to do with my mixer so to be sure took a jack to BD straight to my sound card.... Still the same prob

I can email the waveform if it helps

Do you think something is up with the 909 and can it be fixed??

Tried the HH's and the waveform on these looked normal

Any help would be great

Thanks

Mark

Are your soundcard inputs set to accept a +4 dbu signal or -10 dbu signal ?

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