Rank: Member
Groups: Member
Joined: 11/9/2007(UTC)
Posts: 453
Location: usa
|
Nic, but don't you need differential output to the UCD? I have not followed the legato thread wrt gain, but previously, the IVY was capable of "replacing" the gain lost by the input buffer of the UCD. In any case, the peak to peak swing into the UCD cannot be more than 12V because the input buffer of the UCD is powered by +/-12V. Also when did you become "Administrator" :-)
|
|
|
|
|
|
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)
|
If you want high output balanced signal to the UCD your best bet is an IVY-III with gain added to the second stage.
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 11/22/2010(UTC)
Posts: 7
Location: Budapest
|
Russ White wrote:They are already biased into class A up to about 20ma. Can I increase it? I would like to build a full class a system from the buff output to the headphone output.
|
|
|
|
|
|
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)
|
szabokristof wrote:Russ White wrote:They are already biased into class A up to about 20ma. Can I increase it? I would like to build a full class a system from the buff output to the headphone output. I wouldn't until you find a good reason to. :) If you know enough to want to do it you won't have any trouble figuring out how to pull it off. Just listen to it first then decide.
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 2/10/2009(UTC)
Posts: 299
Location: Italy
|
glt wrote: Also when did you become "Administrator" :-) I was wondering about that too - and you member  EDIT: I can see that I have now become an "advanced member". I wish my skills in electronics reflected this status! Edited by user Friday, December 3, 2010 1:47:38 PM(UTC)
| Reason: Not specified
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 2/10/2009(UTC)
Posts: 299
Location: Italy
|
Russ White wrote:If you want high output balanced signal to the UCD your best bet is an IVY-III with gain added to the second stage. I'm already listening to this combination and it is indeed very good! As a hopeless DIYer I just want to try other ways (especially now when I have ordered the modules.....)
|
|
|
|
|
|
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 the thing is that the Ventus output is single ended. You could increase the output of the Legato if you like.
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 2/10/2009(UTC)
Posts: 299
Location: Italy
|
Russ White wrote:Well the thing is that the Ventus output is single ended. You could increase the output of the Legato if you like. I'm referring to a dual mono configuration of Buff II/Legato using the Ventus in place of the on-board Bal/SE to yield balanced output.
|
|
|
|
|
|
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 see. So you would have four Ventus?
In that case you really probably will only need about a gain of 2 on each Ventus.
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 2/10/2009(UTC)
Posts: 299
Location: Italy
|
Yes, two sets of Ventus2 - one set per channel. I know it is a crazy solution but for the moment it is the only way I see to make a fully discrete DC-coupled I/V stage for the Buffalo...... If you should have any implementation suggestions I will be happy hear. Nic Edited by user Friday, December 3, 2010 2:41:53 PM(UTC)
| Reason: Not specified
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 4/16/2009(UTC)
Posts: 56
Location: Hong Kong
|
Hi Russ: Just finished the Ventus, great when driving HD580!!!! If I'm going to pair with Placid BP, what's the current requirement (output and shunted amount) for Ventus if want to drive very hard headphone like AKG K-1000 (120 Ohm, Sensitivity of 74dB), or can I running 2 board per channel to double the driving current, or just as you mentioned before, increase the gain to 2? How about Gain Setting If Input directly from SE of BII+Legato2, volume control via Volumite? Just hope the offical manual will be online very soon!! Edited by user Saturday, December 11, 2010 8:34:20 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)
|
Hey folks here is a rough draft of the Ventus 2 manual. Please let me know if you spot any errors or omissions. Edited by user Monday, December 13, 2010 7:25:47 AM(UTC)
| Reason: Not specified File Attachment(s):  manual_ventus_V_2.0.0_R_0_2.pdf (136kb) downloaded 63 time(s).You cannot view/download attachments. Try to login or register.
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 4/16/2009(UTC)
Posts: 56
Location: Hong Kong
|
Russ White wrote:Hey folks here is a rough draft of the Ventus 2 manual. Please let me know if you spot any errors or omissions. The delivering current should be 250mA instead of 150mA?
|
|
|
|
|
|
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)
|
Hercules wrote:Russ White wrote:Hey folks here is a rough draft of the Ventus 2 manual. Please let me know if you spot any errors or omissions. The delivering current should be 250mA instead of 150mA? Ah yes, typo. Corrected. Edited by user Saturday, December 11, 2010 1:19:03 PM(UTC)
| Reason: Not specified
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 4/16/2009(UTC)
Posts: 56
Location: Hong Kong
|
Russ White wrote:Hercules wrote:Russ White wrote:Hey folks here is a rough draft of the Ventus 2 manual. Please let me know if you spot any errors or omissions. The delivering current should be 250mA instead of 150mA? Ah yes, typo. Corrected. Any advantages or problems (if cooling is not a big problem) if I supply it up to +/- 18V?
|
|
|
|
|
|
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 have not tried it, but it should be just fine. It will run a little warmer.
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 2/10/2009(UTC)
Posts: 299
Location: Italy
|
The manual reads: "If your source has a DC component, please use a capacitor".
I was thinking to use the Ventus together with the Legato without output caps - adjusting away the DC on the Ventus.
I was under the impression that this should be feasible, but now I'm no so sure anymore......
Thanks,
Nic
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 4/16/2009(UTC)
Posts: 56
Location: Hong Kong
|
Finally put this little monster into case, it's tightest space I ever built, almost no 1 inch of excessing wires  With my AKG K-1000, ok when listen at night with silent background 
|
|
|
|
|
|
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)
|
NicMac wrote:The manual reads: "If your source has a DC component, please use a capacitor".
I was thinking to use the Ventus together with the Legato without output caps - adjusting away the DC on the Ventus.
I was under the impression that this should be feasible, but now I'm no so sure anymore......
Thanks,
Nic Read this version of the manual. :) Brian has not quite caught up with me yet( not his fault he is very busy). Cheers! Russ File Attachment(s): manual_ventus_V_2.0.0_R_0_2.pdf (136kb) downloaded 49 time(s).You cannot view/download attachments. Try to login or register.
|
|
|
|
|
|
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)
|
Hercules wrote:Finally put this little monster into case, it's tightest space I ever built, almost no 1 inch of excessing wires With my AKG K-1000, ok when listen at night with silent background Excellent work! Are you happy with it?
|
|
|
|
|
|
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.
