{"id":120,"date":"2017-07-14T23:12:08","date_gmt":"2017-07-14T21:12:08","guid":{"rendered":"http:\/\/soundoddity.com\/blog\/?p=120"},"modified":"2023-05-05T17:03:03","modified_gmt":"2023-05-05T15:03:03","slug":"office-room-acoustic-treatment-project","status":"publish","type":"post","link":"https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/","title":{"rendered":"Office room acoustic treatment project"},"content":{"rendered":"<h1><strong>Preliminary :<\/strong><\/h1>\n<p>In December 2016, I changed country and house. Goodbye France and Clermont-Ferrand, back to <a href=\"http:\/\/en.reunion.fr\/\" target=\"_blank\" rel=\"noopener\">Reunion island<\/a> where I was born with almost all of my hifi collection.<\/p>\n<p>I have 3 rooms that can be used for HiFi here. The living room which is big but open everywhere, a small TV room (437cm x 308cm) which will be converted in a movie and audio theater and the office room (350cm x 350cm) this article is about.<\/p>\n<p>Unfortunately, my big speakers won&rsquo;t properly fit inside any of these rooms. The Sony&nbsp;<a href=\"http:\/\/www.thevintageknob.org\/sony-APM-8.html\" target=\"_blank\" rel=\"noopener\">APM-8<\/a>&nbsp;will go to the living room, more as decorative items than for a high-end system, the audio theater room will see some Sony&nbsp;<a href=\"https:\/\/soundoddity.com\/blog\/index.php\/2017\/07\/07\/about-the-amazing-apm-66es\/\" target=\"_blank\" rel=\"noopener\">APM-66ES<\/a> first and maybe the Sony&nbsp;<a href=\"http:\/\/www.thevintageknob.org\/sony-APM-4.html\" target=\"_blank\" rel=\"noopener\">APM-4<\/a> or <a href=\"http:\/\/www.thevintageknob.org\/sony-APM-6.html\" target=\"_blank\" rel=\"noopener\">APM-6<\/a> after restoration and I decided to put the Pioneer&nbsp;<a href=\"http:\/\/www.thevintageknob.org\/pioneer-S-F1.html\" target=\"_blank\" rel=\"noopener\">S-F1<\/a> in my office room.<\/p>\n<p>Why the hell would I put so big speakers in such a small bad audio square room ? The reason is simple : I have nowhere else to put these big cabinets in the house. The APM-8 being some separated 4 ways speakers, it is hardly possible to listen music in near field with them. The S-F1 being some quadraxial and coplanar 4 ways speakers, near field listening is quite like listening to small speakers, so S-F1 it is for the office room ! I&rsquo;ll have to deal with it.<\/p>\n<figure id=\"attachment_123\" aria-describedby=\"caption-attachment-123\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-123 size-full\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_2100.jpg\" alt=\"\" width=\"500\" height=\"488\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_2100.jpg 500w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_2100-300x293.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><figcaption id=\"caption-attachment-123\" class=\"wp-caption-text\">Pioneer S-F1 quadriaxial coplanar speaker<\/figcaption><\/figure>\n<h1><strong>The room and listening conditions :<\/strong><\/h1>\n<p>I wanted to be able to see outside, to not have the incoming door totally at my back and to be close from my computer when I&rsquo;m working on electronics. Consequently I decided that my computer desk would be on wheels and that the room would have 2 configurations :<\/p>\n<div id='gallery-1' class='gallery galleryid-120 gallery-columns-2 gallery-size-full'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/bureau-1\/'><img width=\"1100\" height=\"1250\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1.jpg\" class=\"attachment-full size-full\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1.jpg 1100w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1-264x300.jpg 264w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1-768x873.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1-901x1024.jpg 901w\" sizes=\"100vw\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/bureau-2\/'><img width=\"1100\" height=\"1250\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2.jpg\" class=\"attachment-full size-full\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2.jpg 1100w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2-264x300.jpg 264w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2-768x873.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2-901x1024.jpg 901w\" sizes=\"100vw\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/bureau-1_2\/'><img width=\"1100\" height=\"825\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1_2.jpg\" class=\"attachment-full size-full\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1_2.jpg 1100w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1_2-300x225.jpg 300w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1_2-768x576.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-1_2-1024x768.jpg 1024w\" sizes=\"100vw\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/bureau-2_2\/'><img width=\"1100\" height=\"825\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2.jpg\" class=\"attachment-full size-full\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2.jpg 1100w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2-300x225.jpg 300w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2-768x576.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2-1024x768.jpg 1024w\" sizes=\"100vw\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n<p>Config #2 seems more appropriate for music listening.<br \/>\nConfig #1 is better for my work.<\/p>\n<p>The right speaker is close to the outside doors which are old and thin with very thin glass windows. They actually vibrate when the sound is a bit loud. I will have to find a solution about that. The left speaker is close from the Speakers Repair Desk which is 60cm deep and has round feet.<\/p>\n<p>Being at 38% distance from the front wall was impossible with the configuration of the room so I decided to put the listening position at about 38% from the rear wall, averaging the volume taken by the shelves and desks.<\/p>\n<p>All this together led me to put the speakers at 50cm from the side walls, having 174cm between both centers. I built a nice <a href=\"https:\/\/www.facebook.com\/pg\/soundoddity1\/photos\/?tab=album&amp;album_id=1868703823395737\" target=\"_blank\" rel=\"noopener\">Vintage HiFi furniture<\/a> put in between and aligned with the front of the speakers.<\/p>\n<p>I&rsquo;m used to face big speakers inward by approximately a 3\u00b0 angle, which gives a 27\u00b0 off horizontal axis listening position. I have a small chair for music listening which put my ears at about 89cm from the floor with the tweeters being at 78cm from the floor. This makes a 4\u00b0 angle off vertical axis listening position. I find this positioning acceptable considering the dispersion :<\/p>\n<figure id=\"attachment_139\" aria-describedby=\"caption-attachment-139\" style=\"width: 841px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-139 size-full\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/pio-SF1-09.jpg\" alt=\"\" width=\"841\" height=\"960\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/pio-SF1-09.jpg 841w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/pio-SF1-09-263x300.jpg 263w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/pio-SF1-09-768x877.jpg 768w\" sizes=\"(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><figcaption id=\"caption-attachment-139\" class=\"wp-caption-text\">Pioneer measurements data of the S-F1 Custom graciously offered by Axel from&nbsp;<a href=\"http:\/\/www.thevintageknob.org\/\" target=\"_blank\" rel=\"noopener\">The Vintage Knob<\/a><\/figcaption><\/figure>\n<p>And this is the view that I can have while working on the computer. OK, there&rsquo;s better than that, but hey, after 10 years in the cold France winter I&rsquo;m so glad to have this :<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-large wp-image-132\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_5839-1024x576.jpg\" alt=\"\" width=\"525\" height=\"295\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_5839-1024x576.jpg 1024w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_5839-300x169.jpg 300w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_5839-768x432.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_5839.jpg 1200w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><\/p>\n<p>Back wall :<\/p>\n<div id='gallery-2' class='gallery galleryid-120 gallery-columns-2 gallery-size-full'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/bureau-2_2\/'><img width=\"1100\" height=\"825\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2.jpg\" class=\"attachment-full size-full\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2.jpg 1100w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2-300x225.jpg 300w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2-768x576.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Bureau-2_2-1024x768.jpg 1024w\" sizes=\"100vw\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/img_6086\/'><img width=\"1200\" height=\"900\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6086.jpg\" class=\"attachment-full size-full\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6086.jpg 1200w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6086-300x225.jpg 300w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6086-768x576.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6086-1024x768.jpg 1024w\" sizes=\"100vw\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/img_6089\/'><img width=\"1200\" height=\"900\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6089.jpg\" class=\"attachment-full size-full\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6089.jpg 1200w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6089-300x225.jpg 300w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6089-768x576.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6089-1024x768.jpg 1024w\" sizes=\"100vw\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/img_6087\/'><img width=\"1200\" height=\"900\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6087.jpg\" class=\"attachment-full size-full\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6087.jpg 1200w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6087-300x225.jpg 300w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6087-768x576.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6087-1024x768.jpg 1024w\" sizes=\"100vw\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n<p>What about the height ?<\/p>\n<p>The room is pretty high with a celling starting at about 3 meters and going up to 5,62 meters at the top. There is a mezzanine at 3 meters height where I put a part of my hifi collection in paperboard boxes.<\/p>\n<p>Front wall :<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-large wp-image-137\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6090-1024x768.jpg\" alt=\"\" width=\"525\" height=\"394\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6090-1024x768.jpg 1024w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6090-300x225.jpg 300w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6090-768x576.jpg 768w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/IMG_6090.jpg 1200w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><\/p>\n<h1><strong>Audio system :<\/strong><\/h1>\n<p>The chain is composed of a Sony <a href=\"http:\/\/www.thevintageknob.org\/sony-CDP-R3.html\" target=\"_blank\" rel=\"noopener\">CDP-R3<\/a> integrated cd player with the possibility to use a Sony <a href=\"http:\/\/www.thevintageknob.org\/sony-DAS-R1.html\" target=\"_blank\" rel=\"noopener\">DAS-R1<\/a> dac as well. A <a href=\"http:\/\/www.thevintageknob.org\/sony-TC-KA7ES.html\" target=\"_blank\" rel=\"noopener\">Sony TC-KA7ES<\/a> K7 tape deck is used to record vinyls from a Sony <a href=\"http:\/\/www.thevintageknob.org\/sony-PS-8750.html\" target=\"_blank\" rel=\"noopener\">PS-8750<\/a> turntable. Yes I also have the K7 nostalgia. This feeds a Kenwood <a href=\"http:\/\/www.thevintageknob.org\/kenwood-L-1000C.html\" target=\"_blank\" rel=\"noopener\">L-1000C<\/a> pre-amp which drives a Victor <a href=\"http:\/\/www.thevintageknob.org\/jvc-JM-S7.html\" target=\"_blank\" rel=\"noopener\">JM-S7<\/a>&nbsp;A class V-Fet power amp. Speakers are the x-rare Pioneer <a href=\"http:\/\/www.thevintageknob.org\/pioneer-S-F1.html\" target=\"_blank\" rel=\"noopener\">S-F1&nbsp;<\/a>quadriaxial and coplanar 4 ways speakers.<\/p>\n<h1><strong>What about the sound ?<\/strong><\/h1>\n<p>Well, in short : it is a disaster.<br \/>\nI mean one can always find a CD which will sound beautiful but the room is simply leading to catastropha as soon as the volume level is increased.<br \/>\nI know what this system is capable of in a better room and I can also feel the potentiel in this room. I now have to find solutions to make it sound OK.<\/p>\n<h1><strong>Response-measurement system :<\/strong><\/h1>\n<p>The chain of measurement is composed of an iMac 27&Prime; late 2009 computer running on El Capitan, the <a href=\"https:\/\/www.roomeqwizard.com\/\" target=\"_blank\" rel=\"noopener\">REW<\/a> software, a USB to 44KHz\/48KHz coaxial interface, the Sony DAS-R1 dac, the Kenwood L-1000C pre-amplifier, the Victor JM-S7 power amplifier, the Pioneer S-F1 speakers and a mini DSP <a href=\"https:\/\/www.minidsp.com\/products\/acoustic-measurement\/umik-1\" target=\"_blank\" rel=\"noopener\">UMIK-1<\/a> USB mic positioned horizontally at listening position with a good mic stand.<\/p>\n<h1><strong>Measurement results :<\/strong><\/h1>\n<p>Zoom in !<\/p>\n<p><a href=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Left-speaker.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-146 size-full\" src=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Left-speaker.jpg\" alt=\"\" width=\"800\" height=\"487\" srcset=\"https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Left-speaker.jpg 800w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Left-speaker-300x183.jpg 300w, https:\/\/soundoddity.com\/blog\/wp-content\/uploads\/2017\/07\/Left-speaker-768x468.jpg 768w\" sizes=\"(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/a><\/p>\n<h1 style=\"text-align: center;\"><span style=\"color: #0000ff;\"><strong>To be continued&#8230;<\/strong><\/span><\/h1>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Preliminary : In December 2016, I changed country and house. Goodbye France and Clermont-Ferrand, back to Reunion island where I was born with almost all of my hifi collection. I have 3 rooms that can be used for HiFi here. The living room which is big but open everywhere, a small TV room (437cm x &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/soundoddity.com\/blog\/office-room-acoustic-treatment-project\/\" class=\"more-link\">Continuer la lecture<span class=\"screen-reader-text\"> de &laquo;&nbsp;Office room acoustic treatment project&nbsp;&raquo;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":128,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":[],"categories":[8],"tags":[],"_links":{"self":[{"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/posts\/120"}],"collection":[{"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/comments?post=120"}],"version-history":[{"count":21,"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/posts\/120\/revisions"}],"predecessor-version":[{"id":349,"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/posts\/120\/revisions\/349"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/media\/128"}],"wp:attachment":[{"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/media?parent=120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/categories?post=120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/soundoddity.com\/blog\/wp-json\/wp\/v2\/tags?post=120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}