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Re: Looping with a PC laptop... which one?



Ah, good to know.  I'll talk to some of the geeks I know to see if they 
can offer some explanation for why this happens.  The good thing is 
because my employer uses Dell exclusively, I can take one home and try 
it before I get one.

Mark

On Saturday, September 27, 2003, at 10:54 AM, Doug Cox wrote:

> As I said, I'm an electro-peasant, so I can't answer on the reasons 
> why.
> But I can confirm, with my Latitude at least, that it occurs even with 
> an
> independent power supply for the USB device.
>
> Doug
> ----- Original Message -----
> From: "Mark Sottilaro" <sine@zerocrossing.net>
> To: <Loopers-Delight@loopers-delight.com>
> Sent: Saturday, September 27, 2003 12:45 PM
> Subject: Re: Looping with a PC laptop... which one?
>
>
>> Wouldn't get a Latitude.  Don't care if it's that small.
>>
>> However, what doesn't make any sense to me is this: If I'm using USB
>> that doesn't get power from the source of data, there should not be 
>> any
>> ground issues... no?  The M-Audio Audiophile has it's own powersupply.
>> The only link would be the USB data stream, no?  If there was noise on
>> that, it would corrupt the signal and be useless.  I could see the
>> issue if you were using a USB/Audio device that took power from the
>> laptop.
>>
>> Or, I could be totally wrong.
>>
>> Mark
>>
>> On Saturday, September 27, 2003, at 07:25 AM, Doug Cox wrote:
>>
>>> Mark,
>>>
>>> *SOME* Dell's have a known issue with the grounding of the power 
>>> supply
>>> jack, which causes hummmm in the USB audio output.  I know for a fact
>>> that
>>> Latitudes have this problem, but I can't speak for other models.  
>>> Dell
>>> is
>>> very tight lipped about the issue, but when pressed, a good tech
>>> support
>>> person will tell you that it's a documented problem.  The fix?  
>>> Either
>>> use
>>> the battery, or put a 3-prong -> 2-prong adapter on the power supply
>>> cord.
>>> Someone can probably explain how that might be dangerous...  I'm an
>>> electro-peasant, so I don't know.
>>>
>>> Personally, if I was starting from scratch, I wouldn't buy a Dell for
>>> audio.
>>>
>>> Doug
>>> ----- Original Message -----
>>> From: "Mark Sottilaro" <sine@zerocrossing.net>
>>> To: <Loopers-Delight@loopers-delight.com>
>>> Sent: Saturday, September 27, 2003 3:08 AM
>>> Subject: Looping with a PC laptop... which one?
>>>
>>>
>>>> Hey,
>>>>
>>>> Well, I knew as soon as I got comfy with a laptop I was using, the
>>>> owner would want it back (long story, don't ask) so now I'm looking
>>>> for
>>>> the replacement.  I like Macs, but let's face it, they're pricey.  I
>>>> have a nice desktop Mac, and I'm not married to Apple's product line
>>>> especially when they're twice as expensive for the base machine.
>>>>
>>>> SO, I've heard that Jon El-Bizri had issues with a Dell and noise 
>>>> via
>>>> USB.  I'm using a USB interface that has it's own power supply, so I
>>>> honestly don't know how noise could transfer unless the D/A was
>>>> screwed
>>>> up in some way.  The USB (M-audio Audiofile) on the TiBook was fine.
>>>> Quiet.  My only complaint was it didn't have gain controls.  I say
>>>> Dell
>>>> because our IT dept swears by them and our people are on the road
>>>> using
>>>> them for shows all the time so they get banged up.  I guess they 
>>>> have
>>>> great service.
>>>>
>>>> any advise would be appreciated.
>>>>
>>>> Mark Sottilaro
>>>>
>>>
>>
>