Rank: Member
Groups: Member
Joined: 8/13/2007(UTC) Posts: 110 Location: UK
Thanks: 8 times
|
Russ, what do I need for getting the Buffalo32s down to 1.5v output for single ended or 3v balanced? (Direct connection to valve power amps on 1.5v input sensitivity.)
I'm guessing around 4 x 2.8K of 0.1% metal film resistors?
|
|
|
|
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 will want 6.8K that will get you 3.074VRMS balanced, 1.537V SE.
Cheers! Russ
|
|
|
|
Rank: Member
Groups: Member
Joined: 8/13/2007(UTC) Posts: 110 Location: UK
Thanks: 8 times
|
Hi Russ, thanks for the information, I've just got the manual ;-) but looking at that, 6.8K seems a little high? If it is 2K for 2rms and 1,2K for 1.5vrms balanced? I'm sure you know what you are doing :-) I was just double checking and wondering how you calculated this? So just to be clear, 4 resistors 0.1% Metal Film (at R47-50), at 6.8K would do? But the best I can find in 6.81K in RS is Arcol Axial Metal Film 6.81kΩ 0.1% 0.25W RS Stock No. 487-6974 or at 6.8k but at 1% Tyco Metal Film 6.8Ω 0.6W RS Stock No. 150-767 Which would be best? Sorry to be a pain Edited by user Saturday, May 23, 2009 12:53:06 AM(UTC)
| Reason: Not specified
|
|
|
|
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)
|
I would use the .1%
You have to remember that the 6.8K is in parallel with 2K. :)
I checked the result by simulating it.
Cheers! Russ
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.