Topic: dmic-24/48 (photo added)

[waltmon]

II ran the dmic 20 a long time with great results..had no idea they did a 24 bit version...anyone here running these?

[F.O.Bean]

Thats news to me. Are you 100% sure about that Not calling you crazy or a liar, just wondering, as I have NEVER heard of a 24bit version. There was a 20bit version. Is that maybe what you were thinking of? I ran a DMIC20@48kHz with my old 480s and a Sony D8 DAT and I got some killer pulls! I just HATED the stepped gain and you needed a tiny screwdriver or pen to change the gain settings. But back then you couldnt beat the price for a Preamp/ADC all-in-one! It was technically the FIRST all-in-one

[waltmon]

Graham Patten website 675.00 They have 24/44.1 and 24/48 and several cool accessories ..its also smaller than the dmic30.

[F.O.Bean]

Graham Patten website 675.00 They have 24/44.1 and 24/48 and several cool accessories ..its also smaller than the dmic30.

Damn, my bad Walt I have just never heard of the 24bit versions. For $675, you cant really beat a preamp/ADC all-in-one Does it still have those sillyass stepped gain switches you have to move with a tiny screwdriver or pen? Id love it if they FINALLY had variable gain!!! I know tapers back in the day modded their DMIC20s with variable gain knobs so you could trim the gain between the 5db steps

[waltmon]

That was my only beef with mine...hated the large increment steps...I ran 184's into it and the tended to be a little hot for it so running lower levels or with attenuators was the ticket...will try to post the stat sheet on the new units from work...6volts...very low power consumption I do know...knobs would make it pretty much perfect.

[F.O.Bean]

That was my only beef with mine...hated the large increment steps...I ran 184's into it and the tended to be a little hot for it so running lower levels or with attenuators was the ticket...will try to post the stat sheet on the new units from work...6volts...very low power consumption I do know...knobs would make it pretty much perfect.

Yea, back then, everyone ran 16bit, and unless you wanted too much signal-to-noise ratio you can hear in your recordings, you HAD to run the levels into the DATS HOT!!! I wish I had a modded one so my levels wouldve been PERFECT Its not like running 24bit and running levels conservatively so they dont overload. Back then it was either hot levels or too low of levels And if you ran levels lower and then transferred them to a stand alone CD burner like I used to do back in the day, then your recording wasnt very loud at all! And they didnt have DAWs like they do now. So you HAD to nail the levels at the show or you were SCREWED

[waltmon]

When I archived for the Norva theater I stealth recorded the Cult...running 184> dmic20> dap1....problem wise they ran a stadium pa inside the Norva....sounded amazing...but I brickwalled the whole recording...I couldn't mess with it band security was tite...so next loud metal show (Jerry Cantrell) I put attenuators behind my 184s. ..shit sounded like a pro recorded live album

[waltmon]

http://www.gpsys.com/SP_User_Guides/DMIC-24-UG.pdf

user guide...file too large to attach

[waltmon]

dmic-24 pic

[waltmon]

From Graham Patten -

Hello Walt
 
 
 
The preamp chip is a Burr-Brown INA217AIP low noise amp with THD+N of 0.004% @ 1Khz.
 
 
 
I cannot really speak to the decision to control the gain with a dip switch.  I can only imagine that some of the major recording studios at the time of design were requesting specific levels instead of continuously variable gain.  Since it would have been cheaper to design it as continuously variable they most likely had reason to believe the dip switch was a customer requirement.
 
 
 

Best regards,
 
 
 
Jerry
 
 
 
Jerry Allgood
 
Senior Service Technician
 
 
 
The Isis Group, Inc.
 
119 E. McKnight Way
 
Grass Valley, Ca  95949

[F.O.Bean]

Thats awesome! Thanks for the pic, Walt

[ArchivalAudio]

Thats awesome! Thanks for the pic, Walt

ditto

never knew Graham Patten was in Grass Valley.
cool

[noahbickart]

Dynamic range is listed @ 92dB with input sensitivity set at -40 to -20dBu and 84dB with input sensitivity set at -60dBu.

I don't know in what sense this is a 24 bit AD.

There is certainly no benefit capturing 24bit data with this box.

[runonce]

From Graham Patten -

Hello Walt
The preamp chip is a Burr-Brown INA217AIP low noise amp with THD+N of 0.004% @ 1Khz.
 
I cannot really speak to the decision to control the gain with a dip switch.  I can only imagine that....a customer requirement.

Best regards,

Jerry
 
Jerry Allgood
 
Senior Service Technician
 
 
The Isis Group, Inc.
119 E. McKnight Way
Grass Valley, Ca  95949

Ha - "Jerry Allgood"...Sorry, but that made me laugh - like the name of a hippy comic book character

 

(apologies to Jerry A)

[waltmon]

My understanding in conversation with Sonic Sense is that these were aimed at the movie/ video market for audion where the fine tuning isn't quite as critical.