calculating Qms' of RDO with T/S parameters
 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

 Multi-Way Conventional loudspeakers with crossovers

 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
 9th December 2009, 08:12 PM #1 MCPete   diyAudio Member   Join Date: Nov 2005 calculating Qms' of RDO with T/S parameters As formulated by Ron E (a frequent contributor here), Qms' = 2*pi*Fs**Mt/Rmt where Qms' = modified mechanical Q in free air of a DVC woofer with one of the voice coils made unenergized and resistively damping the driver given a resistor across its terminations Fs = free air resonance frequency Mt = total moving mass of the driver Rmt = total mechanical resistance = mech. resistance of the driver Rms + resistive damping Based on relations between the fundamental mechanical parameters of Ron E's equation and the T/S parameters, I derived Qms' = Rt*Qms*Qes/(Re*Qms + Rt*Qes) where Rt = Re + Rx Rx = resistance of the resistor connected across the terminations of the unenergized coil Qes = electrical Q of the DVC driver with terminations of one of the driver's coils open and unconnected. This should be helpful to anyone using RDO as T/S parameters are the ones usually on the spec. sheet for a woofer and not all of the mechanical parameters required for calculating modified Qms by Ron E's equation. Please let me know if think that my equation is faulty or if you would like to see its derivation. Regards, Pete

 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 MCPete Multi-Way 21 5th May 2016 05:08 PM wolly Multi-Way 2 5th April 2006 02:20 PM jackinnj Tubes / Valves 3 19th November 2005 12:23 PM loudnclear Subwoofers 13 17th March 2005 01:25 AM Gilessteve Tubes / Valves 4 23rd June 2004 02:26 AM

 New To Site? Need Help?

All times are GMT. The time now is 04:48 AM.