Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login
Increasing voltage output on the LEgato
Options
View
Go to last post Go to first unread
Previous Topic Next Topic
biggsd  
#1 Posted : Tuesday, October 29, 2013 9:22:14 AM(UTC)
biggsd

Rank: Member

Groups: Member
Joined: 4/28/2013(UTC)
Posts: 55
New Zealand
Location: Auckland

Thanks: 1 times
Was thanked: 1 time(s) in 1 post(s)
Hi there

In order to drive the rest of my equipment properly and as sometimes my input SPDIF signal isnt quite loud enough - i Need to get the voltage output of my legato a bit higher. I have another gain stage, but even when thats maxed out I still cant quite get enough gain to drive my amps to where they need to be SO..

In the instructions it says I can get it from 1.5vrms to 2vrms, by replacing the R1-R4 with 187R resistors.

This should be enough, but I cant seem to find 187Rs with the right power handling of say .25w in small quantities. I can find some 187s but they are not the power handling needed for this application.

Can you suggest where I can find these parts in singles? I just need 10 of them...

Thanks!

-David
Back to top
WWW

Wanna join the discussion?! Login to your Twisted Pear Audio Support forum accountor Register a new forum account.
Back to top  
Russ White  
#2 Posted : Tuesday, October 29, 2013 12:30:25 PM(UTC)
Russ White

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)
Mouser or digikey should carry those.

http://au.mouser.com/Pro...52bQWVpuiA12GSjkkTGyo%3d

1/4W should work fine, but 1/2W would be better.

While not exactly 187R this part would work great:

http://www.digikey.com/p...R500/PPC191XCT-ND/594731

Cheers!
Russ
Back to top
WWW
biggsd  
#3 Posted : Wednesday, October 30, 2013 3:50:48 AM(UTC)
biggsd

Rank: Member

Groups: Member
Joined: 4/28/2013(UTC)
Posts: 55
New Zealand
Location: Auckland

Thanks: 1 times
Was thanked: 1 time(s) in 1 post(s)
Great, thanks heaps for that, will go for the one I can buy in singles :-)

Cheers for your help!
Back to top
WWW
Vingborg  
#4 Posted : Tuesday, August 19, 2014 11:22:00 AM(UTC)
Vingborg

Rank: Member

Groups: Member
Joined: 6/24/2013(UTC)
Posts: 35
Denmark
Location: KBH - Denmark
Hello Angel

I've just got the Legato up and running, but I also need to increase output voltage because for comparison with my cd player the 1,5 volt is a bit too low!

I need about 1,8 volt output.

If 150 ohm gives an output of 1,5 volt, and 187 ohm gives an output of 2 volt - Would I then have to replace R1-R4 with 170 ohm 0,5 watt for 1,8 volt output ?

And is it necessary to replace other than these four resistors for reach 1,8 volt output?

I look forward for your reply Angel

Best regards
Vingborg
Back to top
Vingborg  
#5 Posted : Tuesday, August 26, 2014 4:44:49 AM(UTC)
Vingborg

Rank: Member

Groups: Member
Joined: 6/24/2013(UTC)
Posts: 35
Denmark
Location: KBH - Denmark
Hello again Angel

Forget my question for now..

I'll go with the 187 ohm resistors - They should arrive at my house this day..

I hope by replace R1-R4 with 187ohm resistors, will increase the output.

Henrik
Back to top
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (3)
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.

Youtube
Copyright © Twisted Pear Audio