<html><head></head><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:13px"><div>Hi Mattias,</div><div><br></div><div>What instrument(s) are you using for you SNR measurements? <br></div><div id="yui_3_16_0_1_1450423174763_159571"><span></span></div><div id="yui_3_16_0_1_1450423174763_159572"> </div><div id="yui_3_16_0_1_1450423174763_159574" class="signature"><div id="yui_3_16_0_1_1450423174763_159573"><font size="2">Sincerely, <br> </font></div><div id="yui_3_16_0_1_1450423174763_159594"><font id="yui_3_16_0_1_1450423174763_159593" size="2">Chris Juried <br>Audio Engineering Society (AES) <var id="yui-ie-cursor"></var>Member <br>InfoComm-Recognized AV Technologist</font><span id="yui_3_16_0_1_1450423174763_159596" class="postbody"><br><a id="yui_3_16_0_1_1450423174763_159598" rel="nofollow" target="_blank" href="http://www.juriedengineering.com/">http://www.JuriedEngineering.com</a> (Juried Engineering, LLC.)<br><a id="yui_3_16_0_1_1450423174763_159600" rel="nofollow" target="_blank" href="http://www.tubeequipment.com/">http://www.TubeEquipment.com</a> (Tube Equipment Corporation)<br><a id="yui_3_16_0_1_1450423174763_159602" rel="nofollow" target="_blank" href="http://www.historyofrecording.com/">http://www.HistoryOfRecording.com</a> (History of Recording)</span><a id="yui_3_16_0_1_1450423174763_159604" rel="nofollow" target="_blank" href="http://www.linkedin.com/in/chrisjuried"></a><br> </div></div><br><div id="yui_3_16_0_1_1450423174763_159636" class="qtdSeparateBR"><br><br></div><div style="display: block;" id="yui_3_16_0_1_1450423174763_159634" class="yahoo_quoted"> <div id="yui_3_16_0_1_1450423174763_159633" style="font-family: verdana, helvetica, sans-serif; font-size: 13px;"> <div id="yui_3_16_0_1_1450423174763_159632" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1450423174763_159631" dir="ltr"> <font id="yui_3_16_0_1_1450423174763_159658" face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Mattias Rickardsson <mr@analogue.org><br> <b><span style="font-weight: bold;">To:</span></b> synthdiy diy <synth-diy@dropmix.xs4all.nl> <br> <b><span style="font-weight: bold;">Sent:</span></b> Monday, December 21, 2015 10:21 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> [sdiy] Coolaudio VCAs: V2162 noisier than V2164?<br> </font> </div> <div id="yui_3_16_0_1_1450423174763_159635" class="y_msg_container"><br>Hi there VCA lovers,<br><br>I've done some measurements of SNR & THD of the 2164 and 2162 VCA ICs<br>from Coolaudio, and I'm very surprised with the noise results I'm<br>getting. With the 2162 I cannot reach a SNR over 95 dB before<br>clipping, at any gain. With the 2164 at gain=1 I reach 120 dB SNR.<br>That's a huge difference!<br><br>When trimmed properly the 2162 does have slightly better THD, but the<br>noise seems to always be there in the background. I hope my<br>measurements are correct... the "-97 dBV" noise spec in the V2164<br>datasheet seems a bit odd to me compared to the "-94 dBu" in the V2164<br>dataheet - or I've misunderstood them.<br><br>Has anyone else tried the 2162 (either from THAT or from Coolaudio)<br>and compared it to the 2164 or other VCAs?<br><br>/mr<br>_______________________________________________<br>Synth-diy mailing list<br><a ymailto="mailto:Synth-diy@dropmix.xs4all.nl" href="mailto:Synth-diy@dropmix.xs4all.nl">Synth-diy@dropmix.xs4all.nl</a><br><a href="http://dropmix.xs4all.nl/mailman/listinfo/synth-diy" target="_blank">http://dropmix.xs4all.nl/mailman/listinfo/synth-diy</a><br><br><br></div> </div> </div> </div></div></body></html>