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

Notification

Icon
Error

Login
Legato 3.1 with buffer or no buffer output
Options
View
Go to last post Go to first unread
Previous Topic Next Topic
pinnocchio  
#1 Posted : Friday, May 6, 2011 9:30:52 PM(UTC)
pinnocchio

Rank: Member

Groups: Member
Joined: 11/3/2010(UTC)
Posts: 169
Canada
Location: Quebec
Hi,

Just wanted to know if I use my own balanced preamp would I need the buffered version or if the buffered version should only be used with a volumite and connected directly to a power amp?

If using a preamp would the buffer be too intrusive?

Thanks
Back to top

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 : Saturday, May 7, 2011 6:28:09 AM(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)
answered here

Edited by user Saturday, May 7, 2011 6:29:49 AM(UTC)  | Reason: Not specified
Back to top
WWW
pinnocchio  
#3 Posted : Saturday, May 7, 2011 7:43:22 PM(UTC)
pinnocchio

Rank: Member

Groups: Member
Joined: 11/3/2010(UTC)
Posts: 169
Canada
Location: Quebec
Hi Russ,

Thanks for the answer but it left me a little confused... What I did get though is that you recommend buying the buffered version anyway unless there's a specific reason not to use it.

Do you have any good example of a not needed scenario?

Thanks
Do
Back to top
Russ White  
#4 Posted : Saturday, May 7, 2011 7:59:36 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)
Well if you only ever planned on using it balanced output without going dual mono. :)
Back to top
WWW
pinnocchio  
#5 Posted : Saturday, May 7, 2011 10:29:20 PM(UTC)
pinnocchio

Rank: Member

Groups: Member
Joined: 11/3/2010(UTC)
Posts: 169
Canada
Location: Quebec
Understood!

I guess I'll buy to buffered Legato 3.1!

Thanks
Do
Back to top
LeonvB  
#6 Posted : Saturday, May 7, 2011 10:43:23 PM(UTC)
LeonvB

Rank: Member

Groups: Member
Joined: 5/23/2010(UTC)
Posts: 708
Location: Netherlands

Thanks: 2 times
Was thanked: 48 time(s) in 45 post(s)
So if you go dual mono one doesn't need the buffer?
Back to top
suffolk tony  
#7 Posted : Sunday, May 8, 2011 7:36:22 AM(UTC)
suffolk tony

Rank: Member

Groups: Member
Joined: 9/14/2010(UTC)
Posts: 84
Location: uk
Forgive my naive question but as I'm going dual-mono with standard (unbalanced) outputs, I therefore don't need the buffered version?
Back to top
InfiniteGain  
#8 Posted : Sunday, May 8, 2011 8:22:01 AM(UTC)
InfiniteGain

Rank: Member

Groups: Member
Joined: 6/17/2010(UTC)
Posts: 18
Location: UK
Im equally confused. I have the buffered version on order, but all Russ' posting seems to say is that the output signal from the BAL/SE goes straight to the socket outputs if there's no buffer.

I think that part is fairly obvious -> no buffer = signal goes straight to output. It doesn't help us determine if the buffer is needed or not.

Russ, could there be a dedicated thread for the buffered - vs - unbuffered use of the Legato 3 on DIY audio? I am guessing HF output has something to do with the need to use the buffered version? An amp with a low bandwidth may struggle (or even enter oscillation and ultimately fry) if HF DAC oversampling artefacts are passed through... is this what the buffers are about? Or does the above poster's question have more to do with it?
Back to top
Russ White  
#9 Posted : Sunday, May 8, 2011 8:49:37 AM(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)
The buffer is on the SE outputs when it is used as a normal stereo setup, the balanced outputs are not buffered because their output impedance is already pretty low. So what I was saying is that if you only ever use the balanced outputs and not the SE outputs then you won't care if you have the buffers or not.

If you use two Legato 3.1 in a dual mono setup the SE outputs are actually used differentially (balanced) so if you go that route and use th buffers then you will have buffered balanced outputs.

To reiterate, my advice is to get the buffers. There is never a scenario in which they will hurt anything. The only reason we offered a version without buffers was as a lower cost solution for people who may already have some other line stage or headphone amp downstage.

Edited by user Sunday, May 8, 2011 8:52:15 AM(UTC)  | Reason: Not specified
Back to top
WWW
suffolk tony  
#10 Posted : Sunday, May 8, 2011 9:13:21 AM(UTC)
suffolk tony

Rank: Member

Groups: Member
Joined: 9/14/2010(UTC)
Posts: 84
Location: uk
Thanks Russ - buffered version duly ordered!
Back to top
InfiniteGain  
#11 Posted : Sunday, May 8, 2011 10:54:11 AM(UTC)
InfiniteGain

Rank: Member

Groups: Member
Joined: 6/17/2010(UTC)
Posts: 18
Location: UK
Yes thanks Russ... that's cleared it up.
Back to top
fred_com  
#12 Posted : Monday, May 9, 2011 10:47:02 AM(UTC)
fred_com

Rank: Advanced Member

Groups: Member
Joined: 11/3/2010(UTC)
Posts: 52
Location: Belgorod, Russia

Thanks: 6 times
Was thanked: 1 time(s) in 1 post(s)
Hi Russ,

Sorry for a newbie question, it's just to clarify. I'm going to use Legato 3's in dual mono with SE outputs going into Ventus boards. Will I need buffers in such config?

Thanks,
Fedor
Back to top
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (12)
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