justinstrazdas Posted August 16, 2014 Report Share Posted August 16, 2014 Been searching everywhere for an answer to an issue with the DR-40's dual mode and was hoping someone could clarify. If I run +4 line signals into my DR-40 with the EXT.IN gain set to 0, then there's no way to get a safety recording because I'm assuming it only attenuates the unit's preamps, and not the line input signal itself. If I'm missing something, please let me know, I'd love to have that feature but I understand if the unit wasn't designed to support it like that. Quote Link to comment Share on other sites More sharing options...
David Levine Posted August 16, 2014 Report Share Posted August 16, 2014 Dual mode records a second pair of channels -12dB or -6dB below the first pair. I'm not sure what you're asking... Quote Link to comment Share on other sites More sharing options...
studiomprd Posted August 16, 2014 Report Share Posted August 16, 2014 hi, and welcome js: " If I'm missing something, please let me know, " I think so... have you read the manual ? Quote Link to comment Share on other sites More sharing options...
OmahaAudio Posted August 16, 2014 Report Share Posted August 16, 2014 The manual (page 54) isn't very clear on the matter as to whether or not the DR-40 can do what you're asking but a simple test should tell you if it works the way you want it to. Quote Link to comment Share on other sites More sharing options...
justinstrazdas Posted August 18, 2014 Author Report Share Posted August 18, 2014 Yeah, the manual didn't go too deep into how Dual Mode handles different signal levels, and no one seemed to bring this up on the web. My test had me believing that it only attenuates the preamps, but I'd love to be wrong or missing something here. It's otherwise a good recorder for my 442. Quote Link to comment Share on other sites More sharing options...
Tom Duffy Posted August 20, 2014 Report Share Posted August 20, 2014 Dual mode will attenuate both Mic and Line levels. --- Tom (TASCAM) Quote Link to comment Share on other sites More sharing options...
Rick Reineke Posted August 20, 2014 Report Share Posted August 20, 2014 I highly doubt it has or attenuates a secondary input stage. As with most budget recorders, the record volume only affects the 'digitized' level. Quote Link to comment Share on other sites More sharing options...
Tom Duffy Posted August 21, 2014 Report Share Posted August 21, 2014 I highly doubt it has or attenuates a secondary input stage. As with most budget recorders, the record volume only affects the 'digitized' level. Incorrect. The dual mode 2nd channel level is adjusted before the A/D converter. There would be no benefit to doing it digitally. Tom (TASCAM) Quote Link to comment Share on other sites More sharing options...
Rick Reineke Posted August 21, 2014 Report Share Posted August 21, 2014 I stand corrected. Thanks Tom As long as I have your attention, does the DR-40's line input go through the mic preamp (via attenuation) like most other budget recorders? Quote Link to comment Share on other sites More sharing options...
Tom Duffy Posted August 21, 2014 Report Share Posted August 21, 2014 That would be correct, Line level gets attenuated in the analog domain first. Gotta meet the parts cost budget somewhere. Quote Link to comment Share on other sites More sharing options...
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