F5 power amplifier
 User Name Stay logged in? Password
 Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read Search

 Pass Labs This forum is dedicated to Pass Labs discussion.

 Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
 26th January 2010, 01:11 AM #6781 umut1001   diyAudio Member     Join Date: Mar 2007 Location: Istanbul yes i love the sound too.But want to learn that how many volts should i apply.My calculations are not as same as F5 manual. __________________ "Peace at Home, Peace in the World" http://stores.ebay.com/Paradise-of-H...dio-components www.hiendparadise.net
cviller
diyAudio Member

Join Date: Dec 2005
Location: Toronto
Quote:
 Originally Posted by umut1001 On manual it is written that it has 15.15db gain.so when there is 1.3volts p-p in the input it outputs 40v p-p but it does not ?
No this is not correct. How did you end up with 40V p-p?
15dB is an amplification of approximately 6.

 26th January 2010, 03:30 AM #6783 umut1001   diyAudio Member     Join Date: Mar 2007 Location: Istanbul voltage gain is =15=10log(X) and x=32 from this equation.Am i wrong ? __________________ "Peace at Home, Peace in the World" http://stores.ebay.com/Paradise-of-H...dio-components www.hiendparadise.net
 26th January 2010, 03:32 AM #6784 umut1001   diyAudio Member     Join Date: Mar 2007 Location: Istanbul Pardon.Voltage gain is root square of power gain and it makes approximately 5,6 . ok i see now __________________ "Peace at Home, Peace in the World" http://stores.ebay.com/Paradise-of-H...dio-components www.hiendparadise.net
 26th January 2010, 03:35 AM #6785 umut1001   diyAudio Member     Join Date: Mar 2007 Location: Istanbul So F5 should need a preamp.People say they can fully drive it with their computer soundcard.how? __________________ "Peace at Home, Peace in the World" http://stores.ebay.com/Paradise-of-H...dio-components www.hiendparadise.net
 26th January 2010, 04:48 AM #6786 sangram   diyAudio Member   Join Date: Sep 2002 Location: India By using the +4dB setting. 4dBU ~4 V p-p, or 20V P-P with gain of 5 V/V, which is max output for F5. It is not possible with soundcards and sources that only do consumer level 2V p-p or regular line output 0.775 VRMS.
 26th January 2010, 05:28 AM #6787 umut1001   diyAudio Member     Join Date: Mar 2007 Location: Istanbul I apply +4db setting.Volume gets higher but not full.when i connect soundcard to my denon amp and use it's headphone out I get full power then. __________________ "Peace at Home, Peace in the World" http://stores.ebay.com/Paradise-of-H...dio-components www.hiendparadise.net
 26th January 2010, 07:35 AM #6788 bobodioulasso   diyAudio Member     Join Date: May 2008 Are you shure that what you call "full power" is not rather full square transients?
generg
diyAudio Member

Join Date: Jul 2009
Location: Near Frankfurt
Quote:
 Originally Posted by umut1001 On manual it is written that it has 15.15db gain.so when there is 1.3volts p-p in the input it outputs 40v p-p but it does not ?
db is logarithmic. 10^15db/20db delivers voltage amplification of 5,6x
__________________
and the First Wtt is......a really First Class PSS Idea

AndrewT
diyAudio Member

Join Date: Jul 2004
Location: Scottish Borders
Quote:
 Originally Posted by umut1001 On manual it is written that it has 15.15db gain.so when there is 1.3volts p-p in the input it outputs 40v p-p but it does not ?
15.15dB is equivalent to 5.72 times

1.3V @ input becomes 7.43V @ output.

1Vac becomes 5.72VAC.
The power delivered to an 8r0 load is 4.1W or about 15% of maximum power.
__________________
regards Andrew T.

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Site     Site Announcements     Forum Problems Amplifiers     Solid State     Pass Labs     Tubes / Valves     Chip Amps     Class D     Power Supplies     Headphone Systems Source & Line     Analogue Source     Analog Line Level     Digital Source     Digital Line Level     PC Based Loudspeakers     Multi-Way     Full Range     Subwoofers     Planars & Exotics Live Sound     PA Systems     Instruments and Amps Design & Build     Parts     Equipment & Tools     Construction Tips     Software Tools General Interest     Car Audio     diyAudio.com Articles     Music     Everything Else Member Areas     Introductions     The Lounge     Clubs & Events     In Memoriam The Moving Image Commercial Sector     Swap Meet     Group Buys     The diyAudio Store     Vendor Forums         Vendor's Bazaar         Sonic Craft         Apex Jr         Audio Sector         Acoustic Fun         Chipamp         DIY HiFi Supply         Elekit         Elektor         Mains Cables R Us         Parts Connexion         Planet 10 hifi         Quanghao Audio Design         Siliconray Online Electronics Store         Tubelab     Manufacturers         AKSA         Audio Poutine         Musicaltech         Aussie Amplifiers         CSS         exaDevices         Feastrex         GedLee         Head 'n' HiFi - Walter         Heatsink USA         miniDSP         SITO Audio         Twin Audio         Twisted Pear         Wild Burro Audio

 Similar Threads Thread Thread Starter Forum Replies Last Post pachoorion Car Audio 8 8th May 2011 11:49 PM destroyer X Solid State 38 9th May 2009 06:23 PM johnnyrt Solid State 2 23rd August 2007 11:22 PM Progg70 Solid State 33 10th September 2006 09:44 AM MARAVILLASAUDIO Class D 1 5th November 2004 05:06 PM

 New To Site? Need Help?

All times are GMT. The time now is 02:16 PM.