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> Audio Consulting > Audio Consulting 제작 > [Preamplifier] Silver Rock TVC
[Preamplifier] Silver Rock TVC


제조사 Audio Consulting, Switzerland
상품코드
판매단위
판매가 11,800,000원
옵션적용가 : 11,800,000
Chassis :
Absolute phase switch :
주문수량
EA
재고 무제한
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주문생산품이며 환율에 따른 판매가의 변동이 있을 수 있으니 주문전 문의 바랍니다.

Silver Rock TVC

Passive Transformer Volume Control

SR TVC

The use of resistive elements for volume control leads to major sound deterioration !

First we would like to explain our general philosophy :

There always is one optimum for a given problem. It costs tremendous amounts of time to find it, but this is the only way to make real progress. If you want a cheap solution for your potentiometer in your sound system, then use carbon pots.

They are more neutral than the expensive plastic ones and of course much cheaper.

If however you want the best possible solution to your potentiometer problem, then you should try our silver wired transformer - potentiometer that really is a world apart from other volume setting devices.

Some years ago, when we still were believing that we can achieve good sound with conventional potentiometers, we made a 100 Kohms 24 position stepped potentiometer using Tantalum resistors. This was a lot of work and we were proud of it.

We wanted to see how much better it was comparing it to a surplus graphite type pot.

Even if it was very difficult to admit, the graphite type was better sounding and we decided that we need some fundamental research to be performed.

The first trials with transformer based systems were rather successful and we went on into that direction ending up with custom made iron as well as custom made silver wire.

This potentiometer clearly shows that it is useless to expect resistive systems to perform without major sound deterioration.

One should keep in mind, that a conventional 100 KOhms potentiometer, when set at medium position, places a 50 kOhms resistor in series with the signal.

With a 300pF cable or input capacitance, this situation leads to an attenuation of - 3 dB at 11 Khz.

The lower you go with the volume setting, the narrower the bandwidth becomes right in the audio band !

One finally understands why at low levels our audio systems sound so bad.

With a transformer - potentiometer you have the opposite situation. The lower you go with the volume, the lower the output impedance of you system becomes and the wider the bandwidth.

Besides bandwidth problems, we have noticed that putting resistors in series with the sound signal always results in dynamic constriction and loss of details.

On top of that, a transformer enables the discontinuity of grounds, which helps to keep RF and LF noise as low as possible.

 Download: 

Features SWGLA Preamp 

Product Features:

  • Transformer with 24 logarithmically set up secondary windings
  • +6 dB gain version available
  • 3 switchable inputs
  • Silver wire coils
  • Very exotic magnetics
  • Very special winding techniques to achieve optimal filling characteristics and low losses
  • Very special assembling techniques 
  • Distorsion: almost unmeasurable at all frequencies

 

Black MDF chassis 10`300 CHF
Maple-palisander veneered natural wood chassis 13`300 CHF
Add absolute phase switsch    1'150 CHF

   

사업자등록번호: 128-08-81985 / 통신판매업신고: 제2015-경기파주-6163호 / 대표: 손동찬
주소: 경기도 파주시 하우3길 96 구주소:경기도 파주시 야당동 45-77

Tel: 031-944-1730/ E-mail: nasotec@nasotec.com 개인정보취급방침

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