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[82.70.254.222]) by smtp.gmail.com with ESMTPSA id e11sm1606393edn.18.2018.04.10.06.21.38 (version=TLS1 cipher=AES128-SHA bits=128/128); Tue, 10 Apr 2018 06:21:38 -0700 (PDT) Date: Tue, 10 Apr 2018 14:21:37 +0100 From: Chris Wilson X-Priority: 3 (Normal) Message-ID: <1643427174.20180410142137@gmail.com> To: N1BUG In-Reply-To: References: <162a4797468-1db9-bdf2@webjas-vae168.srv.aolmail.net> <197556217.20180409124931@gmail.com> <37574432-b72e-f2d1-0e85-af19dd970817@n1bug.com> <4D19B3707137430CBE04857FBA5C80B1@gnat> <1b882ae9-fede-3ec4-256e-9b068d3acf99@n1bug.com> <1539CCA16B9A4092972CB000BE4C440A@DELL4> <7606DCC26D954BD1AE881D54F9F2894A@DELL4> <6832cf3c-a6e3-7b11-79dd-95f42cd9bcee@n1bug.com> <1UQRR1pNEA.1SfJSy9fbpz@optiplex980-pc> MIME-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hello Paul, the audiofool speaker wire I used is very pliable even at room temp. I tried it as it's a twin (bonded) flex, so no need for an outer sleeve to bond the two tight together. I found a shrink tube wrapped 2 individual flex amalgam was hard to work unless heated. I feared for snapping the toroid with too brute force an approach. Once pulled really tight the interference fit centre plastic bobbin held it tight. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (dead.fets[at]gmail.com) 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 33d261536bb1467bb13d5764461d5ec4 Subject: Re: LF: W1VD amp help - more waveforms Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=PRIORITY_NO_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Hello Paul, the audiofool speaker wire I used is very pliable even at room temp. I tried it as it's a twin (bonded) flex, so no need for an outer sleeve to bond the two tight together. I found a shrink tube wrapped 2 individual flex amalgam was hard to work unless heated. I feared for snapping the toroid with too brute force an approach. Once pulled really tight the interference fit centre plastic bobbin held it tight. Tuesday, April 10, 2018, 1:22:15 PM, you wrote: > Jay, > I have no reliable way to measure capacitance. The ones I used > originally were NOS Sangamo caps. The physical dimensions are the > same as I find listed for DM19 caps. Last night I swapped one out > for a CDE of same length and height but thicker. Zero measurable > change in ringing. I put squares of thin shim stock under the > grounded lead of each snubber resistor so that now lead length is > basically zero. Absolutely no measurable change in ringing. > I was just curious whether the fact that changing cap values has an > affect might point us toward something we're somehow missing. > I will find some of the Russian mica caps for a try at some point. > Meanwhile I'll find some smaller lamp cord and try once more. To be > honest I'm not at all convinced my secondary winding is tight enough > either. In places it can be manipulated a bit while the amp is > operating at low power. Doing so makes an easily observable change > in the ringing. If there is a technique for getting that first > winding any tighter, it's one I haven't yet learned! > Paul -- Best regards, Chris mailto:dead.fets@gmail.com