diyAudio

diyAudio (https://www.diyaudio.com/forums/index.php)
-   Analog Line Level (https://www.diyaudio.com/forums/analog-line-level/)
-   -   Salas DCG3 preamp (line & headphone) (https://www.diyaudio.com/forums/analog-line-level/296406-salas-dcg3-preamp-line-headphone.html)

xrk971 17th January 2017 08:44 PM

I wonder if all this low freq junk I am seeing osndie to the USB powered line. The laptop is unplugged and on battery so not sure where 60Hz is coming from. Yours looks exceptionally clean. It may be that the Solo is baseline model and not as clean? I am using a nice quality RCA cable (1m) with RCA to TRS adapter in one channel and RCA to wire to unbalanced TRS input. Is it because I am using TRS in unbalanced mode? Some more debugging needed.

Salas 17th January 2017 08:55 PM

Quote:

Originally Posted by xrk971 (https://www.diyaudio.com/forums/analog-line-level/296406-salas-dcg3-preamp-line-headphone-post4954414.html#post4954414)
Anne Bisson

Spot the cans studio video time :D DT-770 Beyers reign the scene but the vocalist will wear open backs (HD595s?) most of the time. For looks I suspect because in the real recording take they could leak to the mic plus the particulars are not a studio cred model. There could be Vgeorge's V6 Sonys also on the drummer's head for a moment. :)

https://www.youtube.com/watch?v=XvZ0Xbyzjw4

Salas 17th January 2017 09:00 PM

Quote:

Originally Posted by xrk971 (https://www.diyaudio.com/forums/analog-line-level/296406-salas-dcg3-preamp-line-headphone-post4955217.html#post4955217)
I wonder if all this low freq junk I am seeing osndie to the USB powered line. The laptop is unplugged and on battery so not sure where 60Hz is coming from. Yours looks exceptionally clean. It may be that the Solo is baseline model and not as clean? I am using a nice quality RCA cable (1m) with RCA to TRS adapter in one channel and RCA to wire to unbalanced TRS input. Is it because I am using TRS in unbalanced mode? Some more debugging needed.

All those pics I posted are in unbalanced mode to be relevant. RCA to TRS adapters everywhere there also.

Here's the Focusrite 2i2 on a clean self loop. http://www.diyaudio.com/forums/equip...focusrite.html

The REW sweeps seem to curiously peak towards the HF there too, yet another quirky thing you spotted before.

JimT 17th January 2017 10:06 PM

Quote:

Originally Posted by Salas (https://www.diyaudio.com/forums/analog-line-level/296406-salas-dcg3-preamp-line-headphone-post4955226.html#post4955226)
Spot the cans studio video time :D DT-770 Beyers reign the scene but the vocalist will wear open backs (HD595s?) most of the time. For looks I suspect because in the real recording take they could leak to the mic plus the particulars are not a studio cred model. There could be Vgeorge's V6 Sonys also on the drummer's head for a moment. :)

https://www.youtube.com/watch?v=XvZ0Xbyzjw4

Not HD595's. They look like HD555's.

Jim

Salas 17th January 2017 10:30 PM

Jim, indeed :)

Salas 17th January 2017 11:47 PM

Quote:

Originally Posted by Dimdim (https://www.diyaudio.com/forums/analog-line-level/296406-salas-dcg3-preamp-line-headphone-post4954494.html#post4954494)
I'm testing it with power-hungry Fostex

Rebecca Pidgeon and band use some too :)

https://www.youtube.com/watch?v=22HvaWyzbuQ

JimT 18th January 2017 02:50 PM

Quote:

Originally Posted by JimT (https://www.diyaudio.com/forums/analog-line-level/296406-salas-dcg3-preamp-line-headphone-post4955318.html#post4955318)
Not HD595's. They look like HD555's.

Jim

Seems my HD595's are quite odd. Mine look like HD590's. So ignore my "Not HD595" comment.

PS: Thanks for the music links.

Jim

Salas 18th January 2017 03:12 PM

Did you also notice those large gunshot earmuff like phones the drummer wore in the Pidgeon clip? Those have Sony 7506 drivers inside. They are specials for high isolation called UltraPhones. Drummers must protect their hearing the most as the kit is loud and if it leaks in enough they pump up the volume of their foldback mix in the cans too. So they end up with ringing ears after longish sessions or when performing loud live events. In Ear monitors do that job well too.

Morde 18th January 2017 04:23 PM

Last evening I hooked up my DCG3 with my DDDAC and as I suspected earlier, I have too much gain. Now I have 3x with 1k resistors, but I wonder if 470ohms would be ok choise? I don't have any 500 ohm ones with me, which would give 2x gain.

Salas 18th January 2017 04:30 PM

Yes no problem with R7 470R instead of 499R, it will just make 3.12x which is peanuts practical difference to 3.0x

For 2x spot on put both R6 and R7 470R


All times are GMT. The time now is 05:42 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 17.65%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio

Wiki