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Balanced booster |
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amlu 
Young Croc 
Joined: 30 November 2009 Location: london Status: Offline Points: 740 |
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 Posted: 04 June 2017 at 1:54am |
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China here to help you...
http://www.ebay.co.uk/itm/Balanced-Unbalanced-to-balanced-unbalanced-RCA-to-XLR-Stereo-Preamplifier-Board-/131624409440?hash=item1ea56d1960:g:5vkAAOSwT5tWF6QE never tried but looks not bad for a tenner. add an +/-15v external power supply... |
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mini-mad
Old Croc 
Joined: 13 July 2012 Location: london Status: Offline Points: 6903 |
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Posted: 04 June 2017 at 5:12pm |
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Doesn't say anywhere about gain at all... I see the op-amps and the unbalanced headers but no where about gain.
As said I was only after about 6db of gain to give the system a boost. I currently have a Kramer VM-80A that runs up to a tickle under 6db and is fully balanced.. and can handle a pair of stereo inputs. (EBay for £23!!!!) |
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If it sounds like a gorilla is trying to escape, turn it down.
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_djk_
Old Croc
Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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Posted: 04 June 2017 at 10:49pm |
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"Can you share a link to where this nice pcb with transformers come from?"
http://www.edcorusa.com/content/images/thumbs/0004403_ttpc-matcher-series.png |
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djk
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mini-mad
Old Croc
Joined: 13 July 2012 Location: london Status: Offline Points: 6903 |
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Posted: 05 June 2017 at 12:46am |
...theres always one!!  As in where to buy them not the picture |
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If it sounds like a gorilla is trying to escape, turn it down.
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cravings
Old Croc
Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7442 |
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Posted: 05 June 2017 at 4:22am |
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Earplug
Old Croc
Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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Posted: 05 June 2017 at 10:01am |
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If you buy those for boost, don´t get the 1:1 ratio - that won´t do anything!
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Earplugs Are For Wimps!
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_djk_
Old Croc
Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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Posted: 05 June 2017 at 7:36pm |
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For some reason I expected everyone to know to right-click on images to see where they come from.
Use the drop-down menu and select 150Ω:600Ω for the size to transformer you desire (1/4, 1/2, 1W, etc.), the 1/4W transformers without PC board start at $6.95 each.  The TTCP series ((shown in the earlier post) is $27.33, plus shipping and your VAT. A typical electronic-balanced input on and amp, EQ, crossover, etc is about 10K so with a 150Ω:600Ω transformer the load on the device driving it will be about 2500Ω. http://www.edcorusa.com/ttpc-series This series is 1/2W, plenty for line levels. It uses M6 laminated cores, typical of studio equipment. Nickel cores are available at about 4x price. Edited by _djk_ - 05 June 2017 at 7:57pm |
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djk
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_djk_ wrote: