{"id":5457,"date":"2015-07-11T14:30:36","date_gmt":"2015-07-11T14:30:36","guid":{"rendered":"http:\/\/www.audioexcite.com\/?page_id=5457"},"modified":"2015-08-06T15:47:30","modified_gmt":"2015-08-06T15:47:30","slug":"nht-2-5i-review-part-3","status":"publish","type":"page","link":"https:\/\/www.audioexcite.com\/?page_id=5457","title":{"rendered":"NHT 2.5i review part 3"},"content":{"rendered":"

 <\/p>\n

Part 3 of the NHT 2.5i review contains frequency and impedance measurements of the individual loudspeaker driver\u2019s mounted in the NHT 2.5i enclosure.<\/p>\n

Tweeter:<\/span><\/h3>\n

 <\/p>\n

Frequency:<\/strong><\/span><\/p>\n

Frequency measurement conditions:<\/strong><\/p>\n

Mic position:<\/strong> 1m distance, on mid-woofer-axis.
\nSmoothing:<\/strong> 1\/24 octave smoothing applied.<\/p>\n

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

(click on picture to zoom)<\/p>\n

Left:<\/strong>\u00a0 Frequency response on-axis.
\nRight:<\/strong> Frequency response 15deg off-axis.
\nBlue<\/strong> = Left loudspeaker.
\nRed<\/strong>\u00a0 = Right loudspeaker.<\/p>\n

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

(click on picture to zoom)<\/p>\n

Left:<\/strong>\u00a0 Frequency response on-axis, 15 and 21deg off-axis.
\nRight:<\/strong> Frequency response 30, 45 and 60deg off-axis.<\/p>\n

A smooth and linear tweeter frequency response. The aluminium dome break-up at 26kHz is well suppressed by the diffusor.<\/p>\n

Impedance:<\/span><\/strong><\/p>\n

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

Blue:<\/strong> Left loudspeaker.
\nGreen:<\/strong> Right loudspeaker.<\/p>\n

Mid-woofer:<\/span><\/h3>\n

 <\/p>\n

Frequency:<\/strong><\/span><\/p>\n

Frequency measurement conditions:<\/strong><\/p>\n

Mic position:<\/strong> 1m distance, on mid-woofer-axis.
\nSmoothing:<\/strong> 1\/24 octave smoothing applied.<\/p>\n

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

(click on picture to zoom)<\/p>\n

Left:<\/strong>\u00a0 Frequency response on-axis.
\nRight:<\/strong> Frequency response 15deg off-axis.
\nBlue<\/strong> = Left loudspeaker.
\nRed<\/strong>\u00a0 = Right loudspeaker.<\/p>\n

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

(click on picture to zoom)<\/p>\n

Left:<\/strong>\u00a0 Frequency response on-axis, 15 and 21deg off-axis.
\nRight:<\/strong> Frequency response 30, 45 and 60deg off-axis.<\/p>\n

The Peerless mid-woofer has a smooth and extended frequency response without any violent cone break-ups.<\/p>\n

Impedance:<\/strong><\/span><\/p>\n

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

Blue:<\/strong> Left loudspeaker.
\nGreen:<\/strong> Right loudspeaker.<\/p>\n

The closed box resonance @ 93Hz<\/p>\n

Sub-woofer:<\/span><\/h3>\n

 <\/p>\n

Frequency measurement conditions:<\/strong><\/p>\n

Mic position:<\/strong> Nearfield. With and without cross-over.
\nSmoothing:<\/strong> 1\/24 octave smoothing applied.<\/p>\n

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

(click on picture to zoom)<\/p>\n

Left:<\/strong>\u00a0 Nearfield frequency response without x-over.
\nRight:<\/strong> Nearfield frequency response with x-over.
\nBlue<\/strong> = Sub-woofer.
\nRed<\/strong>\u00a0 = Port.
\nGreen <\/strong>= Sum port+sub-woofer.<\/p>\n

The cross-over gives a 3.5dB boost @ 75Hz.<\/p>\n

Impedance:<\/strong><\/span><\/p>\n

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

(click on picture to zoom)<\/p>\n

Left:<\/strong>\u00a0 Impedance without x-over.
\nRight:<\/strong> Impedance with x-over.
\nBlue:<\/strong> Left loudspeaker.
\nGreen:<\/strong> Right loudspeaker.<\/p>\n

Box tuning frequency @ 33Hz without x-over and 30Hz with x-over.<\/p>\n

Go to NHT 2.5i review part 4<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

  Part 3 of the NHT 2.5i review contains frequency and impedance measurements of the individual loudspeaker driver\u2019s mounted in the NHT 2.5i enclosure. Tweeter:   Frequency: Frequency measurement conditions: Mic position: 1m distance, on mid-woofer-axis. Smoothing: 1\/24 octave smoothing applied. (click on picture to zoom) Left:\u00a0 Frequency response on-axis. Right: Frequency response 15deg off-axis. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5457","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/pages\/5457","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5457"}],"version-history":[{"count":8,"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/pages\/5457\/revisions"}],"predecessor-version":[{"id":5521,"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=\/wp\/v2\/pages\/5457\/revisions\/5521"}],"wp:attachment":[{"href":"https:\/\/www.audioexcite.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}