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[分享] Bryston 推出音響專用的電源隔離變壓器 BIT

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發表於 2015-4-9 22:46:03 | 顯示全部樓層 |閱讀模式
Bryston.jpg
來自加拿大的 Bryston,再度宣布推出它們全新產品,電源隔離變壓器 BIT ,分別有 45 及 60-Amp 兩款型號,備有 220 / 240-volt 輸入及 120-volt 輸出功能,並且可選擇有或沒有 AVR (自動電壓調節)技術,除此之外不論任何型號的 BIT ,均可以安裝標準或專業用的面板機架,方便專業用戶設置於專業器材的架子上。
Bryston 稱 BIT 的開發,是為了實現三個主要目標,分別為了處理AC電源裝置內的電源線路調節、隔離及 non-MOV-based 的保護,而且即使用戶使用超重型電源產品,或甚至乎大電流的放大器,在 BIT 上運作亦不受限制,現有型號更可選擇 5、15 和 20 安培的版本,而且更可以依用戶需要,選擇裝備17英寸標準面板,或19英寸機架安裝式面板等。
Bryston 的 “VP” James Tanner 稱:「開發 Bryston BIT 的目的,是為了改善整個娛樂系統的性能。」,他更補充說:「 BIT 產品能提供穩定電流和低阻抗性能,設計非常適合用於大多數放大器上,同時提供了完全隔離,以及更低的 noise floor 效果 ,最重要的是,能將音響及視頻全面優化!」,看來 James Tanner 對 BIT 這新產品信心十足,效果實在值得令人期待。

資料來源:http://www.theabsolutesound.com/ ... -isolation-devices/
發表於 2015-4-14 10:00:22 | 顯示全部樓層
Hi Folks,
We continually get asked about why we do not rate the Bryston 28B SST2 amplifier into lower impedance loads in our literature when reviews * constantly point out how well the 28B SST2 drives low impedance speakers.

The reason the Bryston 28B SST2 is rated at ‘only’ 900 Watts into 4 Ohms has to do with circuit-breaker ratings. CDN regulations only allow a 12-Amp rating on the circuit-breaker, (80% of the 15-Amp cord rating). When run at 2000 Watts, the breaker would open in only 30 seconds to a minute. This does not have any effect on musical performance, but for continuous power testing we felt it prudent to rate the amp at a power it could sustain without opening the breaker. Similarly, when the amplifier is run on a 2-Ohm load, the breaker would open at lower power levels. In addition, the amplifier’s thermal breakers could open in a short time at 2 Ohms continuous. Again, for speakers with impedance dips into the 2-Ohm range this has no effect. The amplifier will play musical material into the most ‘difficult’ speaker loads with perfect fidelity.
In fact the reason the amplifier tested at ‘only’ 1000 Watts continuous into 2 Ohms is because the steady-state current limit is reached when testing this way. However, the current is not limited on musical crescendos or transients, so peaks of at least 4KW can be reached on speakers with impedance dips down to the 2-Ohm range!
In fact, as the article pointed out, the 28B SST2 has two salient characteristics: One, it is completely untroubled and undisturbed by low impedances and so-called difficult speaker loading. Two, it is extremely transparent at low volume levels and also completely open and musical when the music starts demanding great power and heavy current reserves at realistic volume levels. In these and any other musical respect we will happily compare the 28B SST2 against any other amplifier made.

*ftp://ftp.bryston.com/pub/reviews/Aust_HiFi_July_Bryston_2014.pdf

Bryston 28B SST2

Bryston 28B SST2
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發表於 2015-6-9 14:36:14 | 顯示全部樓層
Wonder if the BIT could be used for 28B SST2 as independent power source?
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