[LAU] Delta 1010LT Variable Input & Output levels?

(Sorry if this post hits the list twice, the first attempt hasn't shown
up in my mailbox for over an hour. Trying again CC'ing myself to ensure
my outbound mail system is working.)

To any Delta 1010LT/Envy24control gurus:

First I want to state that I am aware that analog inputs #1 & #2 for
this card can be configured via on-card jumpers to either of 2 Mic
levels or either of 2 Line levels. My questions below do not pertain to
these jumpers. (Although in talking about jumper settings for each of
the 2 Line level options here, the manual mentions a "+4 mode" that I'm
not familiar with, so if someone wants to explain that.....it might be
related to my questions below!) Anyways:

I've been reading the M-Audio manual that came with this card and it
refers to the ability to control the variable input and output levels
for this card. It mentions a simplified "Consumer" interface with three
radio button options labeled +4dBu, "Consumer" (which the manual
describes as -4dBV), -10dBV. There is also a more "Advanced" interface
that uses sliders to allow finer grain control of each Input and Output
individually. What I'm describing here is the PC/Mac control software
that M-Audio distributes with these cards. Obviously, I'm using this
card in Linux and my control software is Envy24control and Alsamixer.

Questions:

1) Can anyone tell me if the "Consumer" I/O levels (described above)
actually set the hardware on the card to different dynamic range modes?
What I mean here is if this is something *different* than changing the
ADC/DAC slider controls in Envy24control & Alsamixer?

2) Or, are these +4dBu, Consumer (-4dBV), -10dBV buttons, just preset
slider controls that one could manually set on the "Advanced"
slider-based interface. And if this is the case, is this just doing the
same thing the ADC/DAC slider controls are doing in Envy24control &
Alsamixer?

3) If the PC/Mac control software is actually setting the card to
different I/O range modes, then is this also possible with Envy24control?

Finally, I want to restate that I am not confusing the configurable I/O
range limits with the Mic/Line level jumpers available on the card for
analog inputs #1 & #2. What I would like to know is if there are other
software configurable I/O range modes that this card is capable of
running in that Envy24control is not exposing.

Thanks in advance for any hints.

Rick

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Received on Thu Sep 27 16:15:05 2007