Getting Retro up and running - Two questions Options  Watch this topic  Print this topic  Atom Feed  RSS Feed View » Normal Threaded

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pelliott321		#1 Posted : Friday, May 31, 2013 10:21:39 AM(UTC)
Rank: Member Groups: Member Joined: 6/3/2012(UTC) Posts: 44 Location: Baltimore MD		I am using Placid BP for both channels. What should I set the voltage drop across R1 and R2 to set shunt current? Can I set up SE output the same way as you suggested SE input by tying neg and ground together?
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Russ White		#2 Posted : Saturday, June 1, 2013 1:58:31 AM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 3,979 Location: Nashville, TN Thanks: 25 times Was thanked: 89 time(s) in 83 post(s)		Start out at 100ma, then tune so you ware shunting about 50ma. No - the cirucit is not really designed ofr SE output. Do not ground an output. You can take just one phase of the output and GND, but I would suggest using some form of BAL/SE conversion. Cheers! Russ
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pelliott123		#3 Posted : Thursday, June 6, 2013 12:56:07 AM(UTC)
Rank: Member Groups: Member Joined: 8/6/2008(UTC) Posts: 128 Location: Baltimore, MD USA		Well I got the Retro up and running using an old balse with a LME4972 IC from a old buffalo build. Boy this is certainly one of the quietest phonos I have had in my system. I am pretty sure the balse is the limiting factor right now and will be looking for another bal to se conversion.
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Russ White		#4 Posted : Thursday, June 6, 2013 1:27:08 AM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 3,979 Location: Nashville, TN Thanks: 25 times Was thanked: 89 time(s) in 83 post(s)		Ventus EZ should work well here.
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pelliott		#5 Posted : Thursday, June 6, 2013 1:35:42 PM(UTC)
Rank: Member Groups: Member Joined: 8/5/2008(UTC) Posts: 3 Location: Baltimore MD USA		thanks for the reply but I was thinking the full Ventus with the adjustability of gain and feedback. I may want ti adjust feedback based on which cartridge I am using.
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Russ White		#6 Posted : Friday, June 7, 2013 9:51:45 PM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 3,979 Location: Nashville, TN Thanks: 25 times Was thanked: 89 time(s) in 83 post(s)		You can do that with Ventus EZ. :)
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pelliott321		#7 Posted : Saturday, June 8, 2013 10:24:09 AM(UTC)
Rank: Member Groups: Member Joined: 6/3/2012(UTC) Posts: 44 Location: Baltimore MD		I realized that after looking at the schematic and ordered the EZ
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Russ White		#8 Posted : Saturday, June 8, 2013 3:36:01 PM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 3,979 Location: Nashville, TN Thanks: 25 times Was thanked: 89 time(s) in 83 post(s)		Cool. This will work out nicely. And you can drive headphones with it too.
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pelliott321		#9 Posted : Sunday, June 9, 2013 12:34:14 PM(UTC)
Rank: Member Groups: Member Joined: 6/3/2012(UTC) Posts: 44 Location: Baltimore MD		If I have no plans for headphones what can I do to optimize the EZ for going to a preamp
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Brian Donegan		#10 Posted : Sunday, June 9, 2013 2:26:31 PM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)		Originally Posted by: pelliott321 If I have no plans for headphones what can I do to optimize the EZ for going to a preamp No changes required.
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