{"id":1461,"date":"2015-07-18T11:26:49","date_gmt":"2015-07-18T11:26:49","guid":{"rendered":"http:\/\/2016.carlssonplanet.com\/en\/speakers\/carlsson-oa-51-3\/"},"modified":"2015-10-04T15:34:41","modified_gmt":"2015-10-04T13:34:41","slug":"carlsson-oa-51-3","status":"publish","type":"page","link":"https:\/\/carlssonplanet.com\/en\/speakers\/produced\/carlsson-oa-51-3\/","title":{"rendered":"Carlsson OA-51.3"},"content":{"rendered":"

\"Click<\/a><\/p>\n

This is a piece of news not yet discovered by the Hifi press. There is an upgrade kit for modifying the Carlsson OA-51 to OA-51.3 status. Until recently the model could be upgraded to .2 status but now the .3 upgrade kit elevates the speaker to a new level that was not possible before.
\nThe biggest improvement is the absence of the slight hissing from the metal dome tweeter used in OA-51.2. The OA-51.3 is however not sold as a complete speaker. It is only available as an upgrade kit for owners of earlier models.
\nThe upgrade transforms the speaker to a desirable high-end speaker.
\nThe OA-51.3 is the favourite amongst most of the members of the Stig Carlsson Trust and also amongst most Carlsson fanatics<\/p>\n

Restoration<\/strong>
\nMost things according to Restoring and upgrading.
\nThere are however a few things that might need addressing:
\nThe plastic front cover
\nIs most likely ruined from old age by now, get the new wire grill instead.
\nInside the box
\nSome people like to tamper with the bass reflex tube and the internal wiring. This can be tricky as it is very difficult to do anything inside the box due to the battens and the stay wall.<\/p>\n

Upgrading<\/strong>
\nThere are three different upgrade kits plus a new grill and damping material for the damping panels available.<\/p>\n

De Luxe upgrade to OA.51.3
\n<\/strong>\u2022 New tweeters, Carlsson T11oa. The new silk dome tweeter developed by the Stig Carlsson Trust and manufactured by Vifa. A unit with very low distortion.
\n\u2022 New Woofers, Scan-Speak 18W8545 carbon fibre reinforced woofers replacing the old 18W8542.
\n\u2022 A new filter with premium components, teflon insulated one strand wire and a modification instruction.<\/p>\n

Standard upgrade to OA.51.3
\n<\/strong>\u2022 Same speaker units as the De Luxe kit
\n\u2022 A new filter with good standard components, air wound inductors and SCR\/MKP polypropylene capacitors and with standard internal wiring.<\/p>\n

Standard upgrade to OA.51.3 from 51.2
\n<\/strong>This contains the same parts as the standard kit but the woofers are not included.<\/p>\n

\"Click<\/a><\/p>\n

New grill<\/strong>
\nThe original foam front is most likely ruined by now. Therefore a new protective wire grill has been developed for the speaker instead.<\/p>\n

New damping material for the absorbent panels<\/strong>
\nThe panels have also by now most likely deteriorated. New damping material is available.<\/p>\n

All kits has been available from
\nJohn Larsen at Carlssonfabriken i Skillingaryd.
\nPhone: + 46 370 70 900
\nE-mail: [email\u00a0protected] *\/]]><\/a><\/p>\n

TECHNICAL DATA Carlsson OA-51.3<\/strong><\/h3>\n

Principle:<\/strong> 2-way omni-directional bass reflex tuned to 38Hz, with absorbent panels.
\nImpedance:<\/strong> 8 Ohm
\nSensitivity:<\/strong> 87 dB \/ W \/ M
\nMid\/bass:<\/strong> 7\u201d, Scan Speak 18W\/8545
\nTweeter:<\/strong> 25 mm silk dome (Carlsson T11oa)
\nWeight:<\/strong> 14.4 kg
\nMeasures:<\/strong> 43 x 30 x 25 cm W x H x D. W including absorbent panel 72 cm
\nInner volume:<\/strong> 16 litres
\nFinish:<\/strong> Walnut, rosewood, black ash or white lacquer. Other types to order.
\nPositioning:<\/strong> Close to a wall \/ Wall hanging
\nCross over freq:<\/strong> 2500 Hz (OA-51)
\nFrequency range:<\/strong> 32-20.000 Hz (OA-51)
\nFrequency response:<\/strong> 40-17.000 Hz \u00b1 2 dB (OA-51)
\nPrices:<\/strong>
\nNew speakers:\u00a0Not available
\nUpgrade<\/strong>\u00a0De Luxe upgrade<\/strong>: 7,900 SEK
\nStandard upgrade<\/strong>: 5,400 SEK
\nOA-51.2 to 51.3: <\/strong>2,500 SEK
\nDesign grill: 1000 SEK per pair<\/strong>
\nDamping material for absorbent panels<\/strong>: 50 SEK per piece
\nSecond hand\u00a0OA-51.<\/strong>3: Ranging from 4,500 to 10,000 SEK depending on finish and if it is standard or DeLux.<\/p>\n

Martin Dellstig – Co-Editor<\/b><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

This is a piece of news not yet discovered by the Hifi press. There is an upgrade kit for modifying the Carlsson OA-51 to OA-51.3 status. Until recently the model could be upgraded to .2 status but now the .3 upgrade kit elevates the speaker to a new level that was not possible before. The […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":603,"menu_order":26,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-1461","page","type-page","status-publish","hentry"],"yoast_head":"\nCarlsson OA-51.3 - CarlssonPlanet<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/carlssonplanet.com\/en\/speakers\/produced\/carlsson-oa-51-3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Carlsson OA-51.3 - CarlssonPlanet\" \/>\n<meta property=\"og:description\" content=\"This is a piece of news not yet discovered by the Hifi press. There is an upgrade kit for modifying the Carlsson OA-51 to OA-51.3 status. 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