Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Thu, 19 Mar 2020 15:01:28 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 02JLrLws027126; Thu, 19 Mar 2020 17:53:32 -0400 Received: from outgoing-exchange-1.mit.edu (OUTGOING-EXCHANGE-1.MIT.EDU [18.9.28.15]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 02JLrKDj027123 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 19 Mar 2020 17:53:20 -0400 Received: from w92exedge3.exchange.mit.edu (W92EXEDGE3.EXCHANGE.MIT.EDU [18.7.73.15]) by outgoing-exchange-1.mit.edu (8.14.7/8.12.4) with ESMTP id 02JLrGUh013771 for ; Thu, 19 Mar 2020 17:53:22 -0400 Received: from oc11expo22.exchange.mit.edu (18.9.4.84) by w92exedge3.exchange.mit.edu (18.7.73.15) with Microsoft SMTP Server (TLS) id 15.0.1293.2; Thu, 19 Mar 2020 17:52:29 -0400 Received: from oc11exhyb6.exchange.mit.edu (18.9.1.111) by oc11expo22.exchange.mit.edu (18.9.4.84) with Microsoft SMTP Server (TLS) id 15.0.1365.1; Thu, 19 Mar 2020 17:52:43 -0400 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (104.47.55.176) by oc11exhyb6.exchange.mit.edu (18.9.1.111) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Thu, 19 Mar 2020 17:52:43 -0400 Received: from CO2PR04CA0005.namprd04.prod.outlook.com (2603:10b6:102:1::15) by DM6PR01MB3723.prod.exchangelabs.com (2603:10b6:5:84::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2835.18; Thu, 19 Mar 2020 21:52:42 +0000 Received: from CO1NAM03FT027.eop-NAM03.prod.protection.outlook.com (2603:10b6:102:1:cafe::1) by CO2PR04CA0005.outlook.office365.com (2603:10b6:102:1::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2835.18 via Frontend Transport; Thu, 19 Mar 2020 21:52:42 +0000 Received: from mail-pg1-f177.google.com (209.85.215.177) by CO1NAM03FT027.mail.protection.outlook.com (10.152.80.161) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2814.13 via Frontend Transport; Thu, 19 Mar 2020 21:52:41 +0000 Received: by mail-pg1-f177.google.com with SMTP id z72so1996586pgz.3 for ; Thu, 19 Mar 2020 14:52:41 -0700 (PDT) From: Justin Richards To: Microcontroller discussion list - Public. Sender: "piclist-bounces@mit.edu" Date: Thu, 19 Mar 2020 14:52:30 -0700 Subject: [OT]: Optimal speaker enclosures. Thread-Topic: [OT]: Optimal speaker enclosures. Thread-Index: AdX+OfEWbcZMLap0Rdqtd2ctFdKMPw== Message-ID: List-Help: List-Subscribe: , List-Unsubscribe: , Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of gmail.com designates 209.85.215.177 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.215.177; helo=mail-pg1-f177.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=FB3RHUD5rbs9bFHpeiKTV2VVMNYBibv9Rb36jM7Jhro=; b=l6P6h7Bgy83Z75Rin5b0D8qwaUYPkNQmk4Ms1nKrBrxaar9BpurYz4v9WUVFmHmIyA zjZCPgZkj4pMFyEpFq5HC8pQOpU3xj8bAxZCRJXSgBS2+GHKkjHJckFJ4atPr+c1qJyv ZDK15uPhLoEkQrxe2aSo58HXldeEPIZZlFbX+pCCMFafr/nIeN1UGUCiE53WikLGg+hQ c5qpmtIQu2fqHuI1pe75zTNtzYA20YneloYZiiWz3F+IB34VvZa7L+/wvBvHfpyq8J1a E5SymAVEIFrvwrgDo8xLuEiOSftxAOvLzBvTeTPkhSKC783qTEtW72smcU/SViR2+W2b dgLA== authentication-results: spf=pass (sender IP is 209.85.215.177) smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified) header.d=gmail.com;mit.edu; dmarc=pass action=none header.from=gmail.com;compauth=pass reason=100 errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-received: by 2002:a63:d255:: with SMTP id t21mr5295477pgi.114.1584654760328; Thu, 19 Mar 2020 14:52:40 -0700 (PDT) x-topics: [OT] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Noticing there is a resident expert I have a question I have often pondered= - Would the optimum theoretical enclosure be a speaker mounted in a wall with infinite dimension such that the front of the speaker can not see the rear. 1. Optimum as in fidelity and not efficiency. 2. "See" as in the sound from the front can not travel to the rear. 3. A wall of infinite dimension looking like an infinit xy plane . I have concluded that an infinte xy plane would be optimal after installing speakers in the rear wall of a ute with little care or funding at the time and discover I was blown away by the performance. Since that time I have tried installs in sedans with more money and care and always disappointed. Cheers Justin --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .