{"id":1696,"date":"2020-11-15T16:39:55","date_gmt":"2020-11-15T15:39:55","guid":{"rendered":"http:\/\/www.adelsklang.com\/?page_id=1696"},"modified":"2026-01-27T17:56:09","modified_gmt":"2026-01-27T16:56:09","slug":"qr-49-pro-black-white","status":"publish","type":"page","link":"https:\/\/www.adelsklang.com\/en\/qr-49-pro-black-white\/","title":{"rendered":"QR-49 PRO Black & White"},"content":{"rendered":"
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QR-49 PRO Black & White Diffuser<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The Adelsklang QR-49 PRO acoustic diffusors are high-end diffusors with top performance. With 49 (!) diffusion chambers of 6.8 x 6.8 cm each and an effective range of 500 Hz to 8000 Hz, they guarantee maximum diffusion performance over an enormously wide frequency range. Another special feature is the closed back panel. This is firmly connected to all inner struts and further enhances performance. At the same time, it allows easy mounting through existing suspension points. The sophisticated and protected design of the diffusers additionally offers a noble and relaxed look.
Made in Germany - carefully handcrafted with attention to detail.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\u2022 Two-dimensional high-end acoustic diffuser<\/span>
\u2022 Real QRD design\u00a0<\/span>with 49 (!) mathematically calculated diffusion chambers of different depths for perfect diffusion
<\/span>\u2022 Highest diffusion performance over an enormously wide frequency range
\u2022 I<\/span>ncreases the spatiality, liveliness, dynamics and detail of the sound
<\/span>\u2022 Prevents flutter echoes as well as disturbing resonances<\/span>
<\/span>\u2022 For perfect room acoustics in recording and\u00a0<\/span>control rooms as well as in audiophile listening rooms
<\/span>\u2022 Handmade from high quality\u00a0<\/span>Birch plywood, 3 mm wall thickness<\/span>
<\/span>\u2022 Elaborate comb joint frame connections
<\/span>\u2022\u00a0<\/span>Closed back panel for even more performance improvement with 4 suspension points
<\/span>\u2022 Effective range: 500 Hz \u2013 8000 Hz<\/span>
\u2022 Dimensions: 50 x 50 x 11 cm, Weight: approx. 3 kg
<\/span>\u2022 Color: Black\/White stained
<\/span>\u2022\u00a0<\/span>RRP: 119,90 \u20ac\u00a0 <\/span>\u2022<\/span>\u00a0\u00a0<\/span>Made in Germany<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Akustik\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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Recommended by Acousticians
<\/strong>We are very pleased that our diffusers are recommended by numerous acousticians. <\/span>
The product development was a long and intensive way. We would be happy to give you even more information about our diffusers here:<\/span><\/p>

Production with the most modern techniques
<\/b><\/span>Adelsklang diffusers are precisely cut to tenths of a millimeter in Germany using the most modern manufacturing methods and elaborately processed by experts to create the final product.\u00a0<\/span>10 years ago, it would probably have been impossible to produce a diffuser of this type and quality.<\/span><\/span><\/p>

The right material
<\/b><\/span>Two aspects are particularly important for the material of diffusers, the sound hardness and the sonic properties of the material.
<\/span>If the direct sound is reflected by a surface, the tonal properties of the indirect sound are shaped by this surface. This is also one of the reasons why a room with stone walls sounds different from a room with wooden walls.
<\/span>After numerous measurements and listening tests of various materials, birch wood has turned out to be the best material by far. It combines sound hardness and sonic properties in an almost perfect way for an acoustic diffuser.\u00a0
<\/span>To ensure quality and maximize tonal characteristics, we use only cross-laminated premium birch wood from sustainable forests.<\/span><\/span><\/p>

The right material thickness
<\/b><\/span>In QRD diffusers, also known as Schroeder diffusers after the physicist Manfred Schroeder, the so-called fins between the individual chambers play an important role.\u00a0<\/span>For the fins, the general rule is: the thinner, the better. That's why we use only sound-hard birch wood with a thickness of 3 mm for our diffusers.\u00a0<\/span>Due to our elaborate manufacturing process with Comb Joint frame joints, we achieve a rigidity and stability that is second to none.<\/span><\/span><\/p>


Available colors QR-49 PRO Acoustic Diffuser:
<\/span>Natural<\/a>
<\/span>Black<\/a>
<\/span>White<\/a>
<\/span>Black & White<\/a><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Adelsklang\u00ae 2026. If you have any questions about our products, please contact us at support@adelsklang.com
Contact<\/span><\/a>\u00a0 \u00a0|\u00a0 \u00a0Privacy<\/span><\/a>\u00a0 \u00a0|\u00a0 \u00a0Legal notice<\/a><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

QR-49 PRO Black & White Diffusor Die Adelsklang QR-49 PRO Akustik Diffusoren sind High-End Diffusoren mit Top-Performance. Mit 49 (!) Diffusions-Kammern je 6,8 x 6,8 cm und einem Wirkungsbereich von 500 Hz bis 8000 Hz garantieren sie h\u00f6chste Diffusionsleistung \u00fcber einen enorm gro\u00dfen Frequenzbereich. Eine weitere Besonderheit ist die geschlossene R\u00fcckwand. Diese ist mit allen […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"ocean_post_layout":"full-screen","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"off","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"on","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","footnotes":""},"class_list":["post-1696","page","type-page","status-publish","hentry","entry"],"_links":{"self":[{"href":"https:\/\/www.adelsklang.com\/en\/wp-json\/wp\/v2\/pages\/1696","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.adelsklang.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.adelsklang.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.adelsklang.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.adelsklang.com\/en\/wp-json\/wp\/v2\/comments?post=1696"}],"version-history":[{"count":28,"href":"https:\/\/www.adelsklang.com\/en\/wp-json\/wp\/v2\/pages\/1696\/revisions"}],"predecessor-version":[{"id":15546,"href":"https:\/\/www.adelsklang.com\/en\/wp-json\/wp\/v2\/pages\/1696\/revisions\/15546"}],"wp:attachment":[{"href":"https:\/\/www.adelsklang.com\/en\/wp-json\/wp\/v2\/media?parent=1696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}