DACT Selector Switch

DACT CT3 Audio Selector Switches

Very compact audio selector switches that switch between 3, 5 or 6 sources (depending on model). All contacts and connections are gold plated for long life even in the most challenging environments. Same basic construction and size as the DACT CT2 audio attenuators and CT4 balance controls. Can be used in all sorts of applications, projects, upgrades or manufacturing. Switch audio signals or other types of signals with this high precision, quality multi-position rotary switch.

 
DACT CT3 wire eyelets and pin connections.

Available Versions:

• CT3-6-2/wire
  • 2-pole switch.
  • Solder eyelets for wire connections.
  • 6 positions.
  • Non-shorting.
  • Switches up to 2 non-balanced channels, signal only
• CT3-3-4/wire
  • 4-pole switch.
  • Solder eyelets for wire connections.
  • 3 positions.
  • Non-shorting.
  • Switches up to either:
    • 2 non-balanced channels with signal and ground simultaneously, or
    • 4 non-balanced channels, signal only, or
    • 2 balanced channels, + and - signal only (excl. ground)
• CT3-5-4/PCB
  • 4-pole switch.
  • Solder pins for PCB mounting.
  • 5 positions.
  • Non-shorting.
  • Switches up to either:
    • 2 non-balanced channels with signal and ground simultaneously, or
    • 4 non-balanced channels, signal only, or
    • 2 balanced channels, + and - signal only (excl. ground)
• CT3-5-8/wire
  • 8-pole switch.
  • Solder eyelets for wire connections.
  • 5 positions.
  • Non-shorting.
  • Switches up to either:
    • 4 non-balanced channels with signal and ground simultaneously, or
    • 8 non-balanced channels, signal only, or
    • 4 balanced channels, + and - signal only (excl. ground), or
    • 2 balanced channels, +/- signal and ground for both channels

Technical:

CT3 is a high quality Audio Selector Switch. It is based on the same high precision, Swiss made switching mechanism as the DACT CT2 audio attenuators. CT3 is a non-shorting type of switch making sure neither of the input sources will be short-circuiting each other when the switch is operated. CT3-5-4/PCB switches two channels simultaneously. For both channels it switches signal AND ground. This is an effective way to minimise the risk of creating ground loops. In the same way CT3-5-8/wire switches 8 poles.

Features:

• 2/4/8-pole switches 2/4/8 channels simultaneously
• Gold plated contacts for long lifetime even in hot and humid environments
• High reliability
• Matches perfectly with DACT CT2 audio attenuators
• Mechanically 'programmable' for 1 to 3 or 5 or 6 positions

Typical Applications:

• Input selector in Do-It-Yourself Hi-fi / audio projects
• Input selector switch in active or passive preamplifiers
• Selector switch in professional audio equipment
• Switch for long lifetime applications
• Test equipment selector switch

Connections:

CT3-6-2, 6 positions, 2 poles:

Seen from the rear side (connector side)

Pin no. Connection - example only (input selector) 1 Output, channel 1, signal 2 Input, channel 1, signal, source 1 3 Input, channel 1, signal, source 2 4 Input, channel 1, signal, source 3 5 Input, channel 1, signal, source 4 6 Input, channel 1, signal, source 5 7 Input, channel 1, signal, source 6 8 Output, channel 2, signal 9 Input, channel 2, signal, source 1 10 Input, channel 2, signal, source 2 11 Input, channel 2, signal, source 3 12 Input, channel 2, signal, source 4 13 Input, channel 2, signal, source 5 14 Input, channel 2, signal, source 6

CT3-3-4, 3 positions, 4 poles:

Seen from the rear side (connector side)

Pin no. Connection - example only (input selector) 1 Output, channel 1, signal 2 Input, channel 1, signal, source 1 3 Input, channel 1, signal, source 2 4 Input, channel 1, signal, source 3 5 Output, channel 1, ground 6 Input, channel 1, ground, source 1 7 Input, channel 1, ground, source 2 8 Input, channel 1, ground, source 3 9 Output, channel 2, signal 10 Input, channel 2, signal, source 1 11 Input, channel 2, signal, source 2 12 Input, channel 2, signal, source 3 13 Output, channel 2, ground 14 Input, channel 2, ground, source 1 15 Input, channel 2, ground, source 2 16 Input, channel 2, ground, source 3 17 Input, channel 2, signal, source 4

CT3-5-4, 5 positions, 4 poles:

Pin no. Connection - example only (input selector) 1 Output, channel 1, signal 2 Input, channel 1, signal, source 1 3 Input, channel 1, signal, source 2 4 Input, channel 1, signal, source 3 5 Input, channel 1, signal, source 4 6 Input, channel 1, signal, source 5 7 Output, channel 1, ground 8 Input, channel 1, ground, source 1 9 Input, channel 1, ground, source 2 10 Input, channel 1, ground, source 3 11 Input, channel 1, ground, source 4 12 Input, channel 1, ground, source 5 13 Output, channel 2, signal 14 Input, channel 2, signal, source 1 15 Input, channel 2, signal, source 2 16 Input, channel 2, signal, source 3 17 Input, channel 2, signal, source 4 18 Input, channel 2, signal, source 5 19 Output, channel 2, ground 20 Input, channel 2, ground, source 1 21 Input, channel 2, ground, source 2 22 Input, channel 2, ground, source 3 23 Input, channel 2, ground, source 4 24 Input, channel 2, ground, source 5

Seen from the rear side (connector side)

CT3-5-8/wire, 5 positions, 8 poles:

Outline Drawing and Dimensions:

Panel Cutout:

Specifications:

ANTISTATIC CHARGES

To avoid noises from antistatic charges we suggest that one of the following two precautions is taken:

• The DACT CT3 is mounted with electrical connection between its click-house and the equipment chassis.
• A 1 MOhm resistor is connected between the CT3 click-house and equipment ground.