Elma A47 Audio Attenuator

The High-End Audio rotary switch A47 by Elma has a special PCB contact-system for audio purpose. The A47 attenuator has 47 steps and can set up to 6 channels. The torque is 1,5Ncm 1-2 wafers, 3-4 wafers 2.5Ncm and 5-6 wafers 4Ncm and can be assembled with lownoise high-precise SMT thin-film resistors (10k, 25k, 50k, 100k or 600 R) or as THT-Version without preassembled resistors and eyelets for DIY assembling. For assembling you can take resistors with a diameter up to 2.8mm.

Elma A47 rotary switches have a high precise, tactile with a first class surface feel

Characteristics

• 47 Positions, selectable End-Position
• Compact design; 36 x 36 mm (width x height)
• Up to 6 channels
• Preassembled with SMT thin-film-resistors or THT-Version
• 10k, 25k, 50k, 100k or 600 R standard input-impedance
• Excellent acoustic quality and precise switch-feel
• Solid contact-system with 3 um Gold-covering
• Motorized, remote version can be ordered separately 
  

Custom made Options

• Function and Attenuation courves 
• Axes, concentric function
  

Application

• Studio-Mixing descs High-End Home- and Cinema, Mastering Studio 

Torque

The choosen torque depends on the wafers you can select.
If you need a different torque as follows, please let us know within your order:

from 1-2 Wafers: 1.5 Ncm
from 3-4 Wafers: 2.5 Ncm
from 5-6 Wafers: 5 Ncm

Announced Maximal resistor dieameter for A47 0,6/2.8/12mm