{"id":404,"date":"2024-09-07T18:20:38","date_gmt":"2024-09-07T18:20:38","guid":{"rendered":"https:\/\/serwisvintage.pl\/?p=404"},"modified":"2024-09-07T19:33:41","modified_gmt":"2024-09-07T19:33:41","slug":"revox-a-77-4-track","status":"publish","type":"post","link":"https:\/\/serwisvintage.pl\/index.php\/2024\/09\/07\/revox-a-77-4-track\/","title":{"rendered":"REVOX A-77-4 TRACK"},"content":{"rendered":"\n<iframe loading=\"lazy\" src=\"https:\/\/www.facebook.com\/plugins\/video.php?height=476&#038;href=https%3A%2F%2Fwww.facebook.com%2F61563497528195%2Fvideos%2F466743083031352%2F&#038;show_text=false&#038;width=273&#038;t=0\" width=\"273\" height=\"476\" style=\"border:none;overflow:hidden\" scrolling=\"no\" frameborder=\"0\" allowfullscreen=\"true\" allow=\"autoplay; clipboard-write; encrypted-media; picture-in-picture; web-share\" allowFullScreen=\"true\"><\/iframe>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>General<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Manufacturer:&nbsp;Revox<\/li>\n\n\n\n<li>Model: A 77 <\/li>\n\n\n\n<li>Years of manufacture: 1967-1981<\/li>\n\n\n\n<li>Manufactured in: Germany \/ Switzerland<\/li>\n\n\n\n<li>Colour: grey, silver, housing walnut<\/li>\n\n\n\n<li>Remote control: Cable remote control 5 m or 10 m (accessories)<\/li>\n\n\n\n<li>Power consumption: 70 W \/ with power amplifiers max. 100 W<\/li>\n\n\n\n<li>Dimensions, horizontal): 413 mm \u00d7 359 mm \u00d7 215 mm (W \u00d7 H \u00d7 D)<\/li>\n\n\n\n<li>Weight: approx. 15 kg<\/li>\n\n\n\n<li>Original price approx.: 1700 DM (list price)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Connections<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Number of outputs: 3\n<ul class=\"wp-block-list\">\n<li>2 \u00d7 output (Cinch): 2.5 V \/ Ri 600 \u03a9<\/li>\n\n\n\n<li>1 \u00d7 Radio (DIN): 1.2 V \/ Ri 2.5 k\u03a9<\/li>\n\n\n\n<li>1 \u00d7 Phones (jack 6.3 mm): 200-600 \u03a9<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Number of inputs: 3\n<ul class=\"wp-block-list\">\n<li>2 \u00d7 MIC (jack 6.3 mm \/ Cinch) Low: 0.15 mV \/ 50-600 k\u03a9 \/ High: 2.5 mV \/ up to 100 k\u03a9<\/li>\n\n\n\n<li>2 \u00d7 Aux (Cinch): 35 mV at 1 M\u03a9<\/li>\n\n\n\n<li>1 \u00d7 Radio (DIN): 2.5 mV at 33 k\u03a9<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Technical Data<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Max. Coil diameter: 26.5 cm (10.5&#8243;)<\/li>\n\n\n\n<li>Drive: 3 external rotor AC motors (direct drive)\n<ul class=\"wp-block-list\">\n<li>Tone motor controlled via highly stable oscillator and tachogenerator<\/li>\n\n\n\n<li>2 asynchronous winding motors<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Heads: 3<\/li>\n\n\n\n<li>Tracks: 2 or 4, depending on version<\/li>\n\n\n\n<li>Tape speeds: 9.5 and 19 or 19 and 38 cm\/s, depending on the version, \u00b10.2<\/li>\n\n\n\n<li>Slip: &lt;0.2&nbsp;%<\/li>\n\n\n\n<li>Synchronization fluctuations:<\/li>\n\n\n\n<li>Pitch variations:\n<ul class=\"wp-block-list\">\n<li>at 38 cm\/s &lt;\u00b10.06&nbsp;%<\/li>\n\n\n\n<li>at 19 cm\/s &lt;\u00b10.08&nbsp;%<\/li>\n\n\n\n<li>at 9.5 cm\/s &lt;\u00b10.1&nbsp;%<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Overall frequency response:\n<ul class=\"wp-block-list\">\n<li>at 38 cm\/s&nbsp;: 30-22,000 Hz +2\/-3 dB and 50-18,000 Hz \u00b11.5 dB, respectively.<\/li>\n\n\n\n<li>at 19 cm\/s&nbsp;: 30-20,000 Hz +2\/-3 dB or 50-15,000 Hz \u00b11.5 dB<\/li>\n\n\n\n<li>at 9.5 cm\/s: 30-16,000 Hz +2\/-3 dB or 50-10,000 Hz \u00b11.5 dB<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Signal-to-noise ratio: (over band, CCITT, curve C):\n<ul class=\"wp-block-list\">\n<li>at 38 cm\/s &gt;61 dB<\/li>\n\n\n\n<li>at 19 cm\/s &gt;61 dB<\/li>\n\n\n\n<li>at 9.5 cm\/s &gt;58 dB<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>External voltage spacing: n.a.<\/li>\n\n\n\n<li>Distortion: &lt;2&nbsp;% (0 VU, 19 and 38 cm\/s), &lt;3&nbsp;% (0 VU, 9.5 cm\/s),<\/li>\n\n\n\n<li>Equalization: NAB (record + playback) or IEC (playback)<\/li>\n\n\n\n<li>Crosstalk attenuation: Mono: &gt;60 dB, Stereo: &gt;45 dB (1 kHz)<\/li>\n\n\n\n<li>Erasure attenuation: \u226580 dB<\/li>\n\n\n\n<li>Premagnetization and erasure frequency: 120 kHz<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Special Features<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Additional plug-in power amplifier 2 \u00d7 8 watts at 8 \u03a9; (accessories).<\/li>\n\n\n\n<li>Versions with wooden cabinet, case and as built-in chassis.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Versions with Dolby-B-NRS , ORF (studio version HighSpeed , symm. In\/Out)<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>General Connections Technical Data Special Features Versions with Dolby-B-NRS , ORF (studio version HighSpeed , symm. In\/Out)<\/p>\n","protected":false},"author":1,"featured_media":405,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_kadence_starter_templates_imported_post":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[12],"tags":[28,58,52,42,30],"class_list":["post-404","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-po-naprawie","tag-retro","tag-revox","tag-serwis","tag-vintage"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/serwisvintage.pl\/wp-content\/uploads\/2024\/09\/revox-magnetofon-photoaidcom-photoaid-remove-background.jpg","_links":{"self":[{"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/posts\/404","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/comments?post=404"}],"version-history":[{"count":3,"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/posts\/404\/revisions"}],"predecessor-version":[{"id":447,"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/posts\/404\/revisions\/447"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/media\/405"}],"wp:attachment":[{"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/media?parent=404"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/categories?post=404"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serwisvintage.pl\/index.php\/wp-json\/wp\/v2\/tags?post=404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}