Atom Feed - Twisted Pear Audio Support - Topic:Ballsie Gain - 20Twisted Pear Audio Support - Atom Feedurn:twistedpearaudio-com:AtomFeed:TwistedPearAudioSupport:Topic:BallsieGain-20:1Copyright 2024 Twisted Pear Audio Support2024-03-28T13:29:18Zhttp://www.twistedpearaudio.com/forum/Images/YAFLogo.pngForum Adminhttp://www.twistedpearaudio.comfeedback@twistedpearaudio.combiellishttp://www.twistedpearaudio.com/forum/profile/100-biellisbiellishttp://www.twistedpearaudio.com/forum/profile/100-biellisRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whitebiellishttp://www.twistedpearaudio.com/forum/profile/100-biellisRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whitebiellishttp://www.twistedpearaudio.com/forum/profile/100-biellisRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whitebiellishttp://www.twistedpearaudio.com/forum/profile/100-biellisRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whitebiellishttp://www.twistedpearaudio.com/forum/profile/100-biellisRuss Whitehttp://www.twistedpearaudio.com/forum/profile/9-Russ-Whitebiellishttp://www.twistedpearaudio.com/forum/profile/100-biellisYetAnotherForum.NETurn:twistedpearaudio-com:ftPosts:st1:meid725:1Ballsie Gain<table class="content postContainer_Alt" width="100%"><tr><td>It will be a while before pumpkin will be built, so I will change the feedback resisters in Xbosoz for more gain. I am actually putting a little 2 position dip switch on top of a 100k and the original 39k so I can easily switch it back. I will be waiting for Pogo and new version of Joshua and Darwin with display for Pumpkin, may Evan try to incorporate Balsie with multiple output switching.</td></tr></table>2008-01-29T20:59:48-07:002008-01-29T20:59:48-07:00biellis<table class="content postContainer_Alt" width="100%"><tr><td>It will be a while before pumpkin will be built, so I will change the feedback resisters in Xbosoz for more gain. I am actually putting a little 2 position dip switch on top of a 100k and the original 39k so I can easily switch it back. I will be waiting for Pogo and new version of Joshua and Darwin with display for Pumpkin, may Evan try to incorporate Balsie with multiple output switching.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid724:1Ballsie Gain<table class="content postContainer" width="100%"><tr><td>Totally understand. You may also want to adjust the 10K resistor a bit lower, Just don't go much lower than say 2.21K or you will load up your pumpkin. Just figure out the ratio that seems right. The reason I say this is the lower value resistors will have slightly less noise, but even 10K should not be significant.<br /><br />Let me know how it works out. :)</td></tr></table>2008-01-29T20:24:21-07:002008-01-29T20:24:21-07:00Russ White<table class="content postContainer" width="100%"><tr><td>Totally understand. You may also want to adjust the 10K resistor a bit lower, Just don't go much lower than say 2.21K or you will load up your pumpkin. Just figure out the ratio that seems right. The reason I say this is the lower value resistors will have slightly less noise, but even 10K should not be significant.<br /><br />Let me know how it works out. :)</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid723:1Ballsie Gain<table class="content postContainer_Alt" width="100%"><tr><td>Its nice to have a single ended output again, I have a 300b set amp, kt88 push pull, and a M3 headphone amp that have been idle all this time. </td></tr></table>2008-01-29T20:18:07-07:002008-01-29T20:18:07-07:00biellis<table class="content postContainer_Alt" width="100%"><tr><td>Its nice to have a single ended output again, I have a 300b set amp, kt88 push pull, and a M3 headphone amp that have been idle all this time. </td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid722:1Ballsie Gain<table class="content postContainer" width="100%"><tr><td>Sure that will reduce the voltage in to < 1/4 of what it was. Its a good starting point, see if the ballsie seems to be over driven or under driven. Adjust the resistor to GND accordingly.<br /><br />Cheers!<br />Russ</td></tr></table>2008-01-29T20:12:20-07:002008-01-29T20:12:20-07:00Russ White<table class="content postContainer" width="100%"><tr><td>Sure that will reduce the voltage in to < 1/4 of what it was. Its a good starting point, see if the ballsie seems to be over driven or under driven. Adjust the resistor to GND accordingly.<br /><br />Cheers!<br />Russ</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid721:1Ballsie Gain<table class="content postContainer_Alt" width="100%"><tr><td>OK , so put a 10K in series on the + side and - and then a 2.21k from each of them to the ground wire? I am currently driving it from my Twisted X Bosoz with the F4 I run my gain up 3/4 the Balsie is running off my second output and goes to my subwoofer amp. It has way to much gain but is not distorting. </td></tr></table>2008-01-29T20:11:06-07:002008-01-29T20:11:06-07:00biellis<table class="content postContainer_Alt" width="100%"><tr><td>OK , so put a 10K in series on the + side and - and then a 2.21k from each of them to the ground wire? I am currently driving it from my Twisted X Bosoz with the F4 I run my gain up 3/4 the Balsie is running off my second output and goes to my subwoofer amp. It has way to much gain but is not distorting. </td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid718:1Ballsie Gain<table class="content postContainer" width="100%"><tr><td>I am not sure exactly what you are asking...<br /><br />Do you mean loading the output of the pumpkin? That should be in a feedback loop, and a load should not bother it at all, as long as it is not to heavy.<br /><br />I would use a series resistor around 10K and then try 2.21K as shunt to ground or so until you find the attenuation you want.<br /><br />30V would seriously overdrive the ballsie, even unity gain.</td></tr></table>2008-01-27T16:29:22-07:002008-01-27T16:29:22-07:00Russ White<table class="content postContainer" width="100%"><tr><td>I am not sure exactly what you are asking...<br /><br />Do you mean loading the output of the pumpkin? That should be in a feedback loop, and a load should not bother it at all, as long as it is not to heavy.<br /><br />I would use a series resistor around 10K and then try 2.21K as shunt to ground or so until you find the attenuation you want.<br /><br />30V would seriously overdrive the ballsie, even unity gain.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid717:1Ballsie Gain<table class="content postContainer_Alt" width="100%"><tr><td>I was worried about overdriving it, The Pumpkin is capable of outputting 30v, If I use a voltage divider on Ballsie input will that affect the other parallel balanced output on preamp? </td></tr></table>2008-01-27T15:53:42-07:002008-01-27T15:53:42-07:00biellis<table class="content postContainer_Alt" width="100%"><tr><td>I was worried about overdriving it, The Pumpkin is capable of outputting 30v, If I use a voltage divider on Ballsie input will that affect the other parallel balanced output on preamp? </td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid716:1Ballsie Gain<table class="content postContainer" width="100%"><tr><td>Interesting... well I would probably just put a voltage divider at the input of the ballsie, since without it the input voltage swing may well be too much even for unity gain.</td></tr></table>2008-01-27T15:42:42-07:002008-01-27T15:42:42-07:00Russ White<table class="content postContainer" width="100%"><tr><td>Interesting... well I would probably just put a voltage divider at the input of the ballsie, since without it the input voltage swing may well be too much even for unity gain.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid715:1Ballsie Gain<table class="content postContainer_Alt" width="100%"><tr><td>I am not using the Ballsie with Opus. I plan to drive it from the Pumpkins balanced outputs. The Pumpkin puts out to much voltage, I would like to drive other single-ended devices off of the Ballsie with less voltage output.</td></tr></table>2008-01-27T15:38:27-07:002008-01-27T15:38:27-07:00biellis<table class="content postContainer_Alt" width="100%"><tr><td>I am not using the Ballsie with Opus. I plan to drive it from the Pumpkins balanced outputs. The Pumpkin puts out to much voltage, I would like to drive other single-ended devices off of the Ballsie with less voltage output.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid714:1Ballsie Gain<table class="content postContainer" width="100%"><tr><td>There is not much gain, its only about 3db. the SE output of the ballsie is right at rebook levels(2VRMS) with full scale output from the opus. :) So I would not even touch it.</td></tr></table>2008-01-27T15:19:57-07:002008-01-27T15:19:57-07:00Russ White<table class="content postContainer" width="100%"><tr><td>There is not much gain, its only about 3db. the SE output of the ballsie is right at rebook levels(2VRMS) with full scale output from the opus. :) So I would not even touch it.</td></tr></table>urn:twistedpearaudio-com:ftPosts:st1:meid713:1Ballsie Gain<table class="content postContainer_Alt" width="100%"><tr><td>I plan to use the Ballsie with my Pumpkin preamp that has extra gain for my F4 amps. I would like to reduce the gain of the single ended output of the Ballsie, is there a better way other than resisters at the output?<br /><br />Bill</td></tr></table>2008-01-27T15:14:24-07:002008-01-27T15:14:24-07:00biellis<table class="content postContainer_Alt" width="100%"><tr><td>I plan to use the Ballsie with my Pumpkin preamp that has extra gain for my F4 amps. I would like to reduce the gain of the single ended output of the Ballsie, is there a better way other than resisters at the output?<br /><br />Bill</td></tr></table>