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Buffalo IIIse +4dBu "Pro" Line Level or -10 dBV "Consumer" Line Level?
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Brian Donegan  
#21 Posted : Tuesday, April 16, 2013 7:08:34 PM(UTC)
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The ones from Mouser are already within 0.1% of each other, so you only need 4.
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Datazone on 4/16/2013(UTC)
Russ White  
#22 Posted : Tuesday, April 16, 2013 7:19:25 PM(UTC)
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If you get the .1% there is no need for hand matching just get what you need. I only suggest hand matching for 1%.
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Datazone on 4/16/2013(UTC)
LeonvB  
#23 Posted : Tuesday, April 16, 2013 7:58:48 PM(UTC)
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It's a fairly simple equation:
- Do you have the equipment to hand match the resistors (<0.05% DMM)?
If the answer is no, it's likely not worthwhile to proceed.

- What is the value of your effort/time testing them all?
If the answer is $0, proceed. If it's more, add this amount to the 1% stack.

- How many resistors do you need in total?
It's either 4 or 8 depending on the configuration (stereo or dual mono), so it's $6 or $12 + shipment for the 0.1% and $6 + shipment + effort for the 1%.
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Datazone  
#24 Posted : Tuesday, April 23, 2013 9:27:07 PM(UTC)
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Originally Posted by: Russ White Go to Quoted Post
If you get the .1% there is no need for hand matching just get what you need. I only suggest hand matching for 1%.


Hey Russ,

Update: I changed out the resistors to the 357 RC55LF-D-357R-B-B---- Thanks thanks Thanks Brian!!!!

Output Voltage doubled to 1.28 which is good (, I haven't tested for overall sound quality yet that's the next step.

I did however see a jump in voltage with the Ventus EZ as well 2.56. Pic attached
What can I do to modify this? I don't want to blow a pair of headphones.

Thanks
Dave
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Russ White  
#25 Posted : Wednesday, April 24, 2013 11:18:03 PM(UTC)
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Yes it's input is now increased to roughly double what it was. So depending on how much you want it reduced refer to the manual on choosing the right resistors for you.
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Datazone  
#26 Posted : Wednesday, April 24, 2013 11:50:01 PM(UTC)
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Originally Posted by: Russ White Go to Quoted Post
Yes it's input is now increased to roughly double what it was. So depending on how much you want it reduced refer to the manual on choosing the right resistors for you.


Hey Russ,

Great - I'm looking for about half of what it is now. ((1.29v before)) Also, I don't see a manual for the Ventus EZ's

Thanks
Dave

Edited by user Wednesday, April 24, 2013 11:52:23 PM(UTC)  | Reason: Not specified
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Russ White  
#27 Posted : Thursday, April 25, 2013 12:00:27 AM(UTC)
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Hmm, that's odd. I thought we had it up there. I will check into that.

In any case, just halve the value of R4 and R5 and that should get you really close.
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