Q:音響媒體上見到 Ken Kreisel 超低音的產品報導 (https://www.audionet.com.tw/thread-14406-1-1.html),有DXD-300A(B)、DXD-500 STUDIO、DXD-1000,音響討論區上有人說它低失真,是否如此?它的性能如何?

Ken Kreisel 超低音之惑?







A:

淺見供參

1. 國外幾個較著名的超低音測試網站(ex. Data-Bass...等),目前鄙人尚未見著上列幾款超低音的資訊。

2. 目前鄙人亦未尋得上列幾款超低音較基本的性能測量 data (ex. CEA-2010),若您有見著,煩請提供鄙人參考。

3. 網路上若有人稱其低失真,可請其提供相關的性能測試 data 以茲參考比較。

4. 由於目前鄙人未見過以上幾款超低音的性能測試 data ,因此無從知悉其性能概況並以為比對。



From:https://blog.xuite.net/thxisf/twblog/590218502
理性與感性 科學與藝術 https://thxisf.pixnet.net/blog
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smdavid
砲芙大大向來數據精準,信手拈來,都是真相啊~五分奉上喔~[100分]
thxman.tw
smdavid 網兄,請參 https://www.mobile01.com/topicdetail.php?f=348&t=6525738#83974845
供參

1. 出處:
https://www.soundandvision.com/content/review-kreisel-sound-dxd-12012-subwoofer-page-2

https://www.audioholics.com/subwoofer-reviews/svs-pb-2000-pro-1/2KProCEA2010table.jpg/image

https://www.audioholics.com/subwoofer-reviews/svs-3000/SB3000CEA2010table.jpg/image









2. 統合






3. KK DXD-12012 有證據證明為 DXD-300A(B)、DXD-500 STUDIO、DXD-1000 中的哪一款?若為同一款,因何型號有別?若非同款,則更難表徵其 data。

4. S&V 與 Audioholics 所採之規範、測距、設備、場地等有別,測者亦不同,其相互間的對比參考性與對比度得多加留意並保留參考對比的絕對性。


S&V:I performed CEA-2010A output measurement at 3 meters, then added +9.5 dB to scale the measurements to the 1-meter reporting standard mandated by CEA-2010. Averages are done in pascals. An L indicates that the maximum level was reached without reaching any of the CEA-2010 distortion thresholds, indicating that the output at this frequency is determined by a limiter or the maximum gain of the sub's internal electronics.


Audioholics: The above CEA-2010 measurements are short-term bursts that show the subwoofer’s clean peak SPL before heavy distortion sets in. Our measurements have been referenced to 2-meter RMS, which is 9 dB down from the standard requirement for the measurements to be shown at 1-meter peak. However most publicly available CEA-2010 measurements are shown at 2-meter RMS, so we followed that convention. The burst tests for the PB-2000 Pro are tremendous results for a ported 12” subwoofer. SVS reports that this is close to what they measured except at 20 Hz where they measured 1.6 dB more than what I was able to get.
理性與感性 科學與藝術 https://thxisf.pixnet.net/blog
Sound and Vision 的 Kreisel Sound DXD-12012 評測作者是 Brent Butterworth. 其測試數據都是 1m Peak, 和 Data-bass 的 Josh Ricci 還有 Audioholics 的 James Larson 的 2m RMS 不一樣. 因此, 我提供的表格上已調整過.

Kreisel Sound DXD-12012 是上代旗艦. DXD-1000 是現在旗艦.
供參

1. 以上那些基礎差異及網兄的調整咱皆知然,然對於有些看倌則不見得皆知然。鄙將整匯如下以供看倌們參茲。

2. 對於 KK DX-12012 與 KK DX-1000,倘原廠官方未公告且相關證據尚未足然的情況下,暫不視其為同款超低音,謹慎求證為上。

3. 對於SUB等相關電聲測量有一定知識、技術、經驗者,鮮少會就此簡單來說解讀。




整匯

(1) 出處:

https://www.soundandvision.com/content/review-kreisel-sound-dxd-12012-subwoofer-page-2

https://www.audioholics.com/subwoofer-reviews/svs-pb-2000-pro-1/2KProCEA2010table.jpg/image

https://www.audioholics.com/subwoofer-reviews/svs-3000/SB3000CEA2010table.jpg/image









(2) 統合





(3) 調整





PS.
眾看倌,對於 CEA-2010 相關資料的數據閱讀上,至少得先注意以下事項,請見參
CEA-2010 閱讀數據留意事項之惑
理性與感性 科學與藝術 https://thxisf.pixnet.net/blog
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