Apparent DR-44WL firmware bug, v2.01

GTBecker

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DR-44WL
FYI, it appears there exists a bug in DR-44WL firmware v2.01 0110 (and the earlier v1.21 0102). It involves the recording level control setting. It is possible to send out-of-range values to the gain control hardware.

You should be able to reproduce the fault:
- listen with headphones, set Output Level to 15 or so
- in 4CH mode, press Record; Tracks 1/2 flash
- press Input Level; select Tracks 1/2
- advance input level on both tracks to 100
- deselect Track 2; reduce Track 1 input level to zero
- reselect Track 2; advance Track 1 input level to 100; note output level changes in headphones and Track 2 input level indication remains at 100
- decrease Track 1 input level to zero; note output level changes in headphones, and Track 2 input level indication remains at 100
- continue to decrease input level; Track 2 indication decreases from 100
- continue to decrease Track 2 input level to zero; note output level
changes in headphones

Level value handling code is at fault, I suspect allowing too large or negative values to be sent to the hardware. I reported this to Aaron at Tascam a year ago but the behavior continues in the v2.01 release.

Tom
 
Last edited:
Yes, input level bug still exists with v2.10.

Tom
 
Thanks Tom. Very disappointed that this still hasn't been addressed. Seems like a fundamental bug in the firmware. I have had no response since I emailed Tascam a couple of weeks ago.
Thanks again.
Ewen
 

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