{"id":169,"date":"2012-06-02T00:39:29","date_gmt":"2012-06-02T00:39:29","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=169"},"modified":"2012-06-02T00:40:41","modified_gmt":"2012-06-02T00:40:41","slug":"listening-to-the-45-single-ended-se-amplifier","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2012\/06\/02\/listening-to-the-45-single-ended-se-amplifier\/","title":{"rendered":"Listening to the 45 Single Ended (SE) Amplifier"},"content":{"rendered":"

A perfect and warm sound<\/strong><\/p>\n

\"\"<\/a>
45 SE amplifier<\/figcaption><\/figure>\n

Hard to describe in words what I felt when I played first time “Goodbye Pork Pie Hat” from Charles Mingus. Perhaps it was the due to the fact that I play saxophone, but inevitably for me this song is one of the best ones to test the response of any amplifier. Sax duets, solos, a great bass line and varied moods along the way can take the amplifier to their best of their abilities. Being a jazz fan, couldn’t help myself when listening this amplifier for the first time. I used to play an EL34 push-pull, and liked its sound and power – specially for rock. But when it comes to the first watt, this amplifier is breathless. Pure and a warm tone. Playing this song made me understand all the fuzz about single ended amps. But, far from opening the debate about that, I’m sure that a 45\/46 in push-pull has its own merits and would probably will one of those amps I’d like to build in the future.<\/p>\n

Having a FE167E full-range driver that have a relatively high efficiency (94dB\/W), the 45 SE doesn’t sound low. It has its own personality. Brilliant for jazz, it may need a tad of power perhaps when playing some rock and classic stuff.<\/p>\n

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7193 valve<\/figcaption><\/figure>\n

It took me some time to optimise the driver stage. Started with an SRPP, then a paralleled 6SL7 to an 6J5 loaded with a gyrator in mu-follower achieving less than 0.20% THD at 150 Vpp. A great driver in my opinion. Now need to replace the 6J5 for the lovely 7193.<\/p>\n

It looks like a Frankenstein valve, but it’s a lovely thing to me. Many claim that it’s a superior valve compared to the 6SN7\/6J5 or even CV1988.<\/p>\n

Adding the 7193 will require opening my 45SE and not having music at home for some time so at the moment is not what I have in mind.<\/p>\n

Perhaps when I get the 4-65A up and running? It will take some time for that…<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

A perfect and warm sound Hard to describe in words what I felt when I played first time “Goodbye Pork Pie Hat” from Charles Mingus. Perhaps it was the due to the fact that I play saxophone, but inevitably for me this song is one of the best ones to test the response of any … Continue reading “Listening to the 45 Single Ended (SE) Amplifier”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":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":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[12,5],"tags":[53,48,778,51,54,52,56,55,6,49,50],"class_list":["post-169","post","type-post","status-publish","format-standard","hentry","category-dht-valves","category-valves","tag-2c22","tag-45-se","tag-778","tag-6j5","tag-6sn7","tag-52","tag-charles-mingus","tag-cv1988","tag-dht","tag-dht-amplifier","tag-fe168e"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-2J","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/169","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/comments?post=169"}],"version-history":[{"count":2,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/169\/revisions"}],"predecessor-version":[{"id":173,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/169\/revisions\/173"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}