The CLD1 small area and counter loop driver is designed for counter systems and small area perimeter loop systems. Measuring only 128 x 74 x 35mm and with an output current of 2.4A RMS, the CLD1 is the smallest and highest performance amplifier in its class. Designed and built to Ampetronic’s high standards of reliability, backed with a 5 year warranty and Ampetronic support, the CLD1 offers certainty of performance and the lowest lifetime cost available.
Audio quality is ensured with metal loss correction (MLC) combined with Ampetronic’s usual high standards of design. The CLD1 is designed for flexibility and convenience, featuring 2 separate microphone inputs with independent level controls, one of which can be configured as a line input.
All cable connections are made on a single face of the unit, adding flexibility and further simplifying installation.
Please also take a look at the TalkPerfect Dx Speech Transfer system for communication across barriers.
The CLD1 compact loop driver can be ordered as a stand alone loop driver or as part of a kit for a specific application.
Counter loop kits comprise 1 x CLD1, 1 x pre-formed loop, 1 x microphone (choice), 1 x loop present sign, 1 x installation guide and 1 x power supply (region specific). If required, the loop can be covered with a fabric pad to make it more aesthetically pleasing – see kit CLD001PD.
|CLD001||Compact Loop Driver, A6 Loop Present Sign, Installation Guide, Region Specific Power Supply|
|CLD001CT||Compact Loop Driver, Tie-Clip Mic, Pre-formed Loop, A6 Loop Present Sign, Installation Guide, Region Specific Power Supply|
|CLD001CD||Compact Loop Driver, Desktop Mic, Pre-formed Loop, A6 Loop Present Sign, Installation Guide, Region Specific Power Supply|
|CLD001CB||Compact Loop Driver, Boundary Mic, Pre-formed Loop, A6 Loop Present Sign, Installation Guide, Region Specific Power Supply|
|CLD001CX||Compact Loop Driver, Pre-formed Loop, A6 Loop Present Sign, Installation Guide, Region Specific Power Supply|
|CLD001PD||CLD1 Induction Loop Driver Multi PSU + Desktop Mic + Fabric Counter Loop Pad|
When supplied as a counter loop kit, the CLD1 comes with choice of microphone, a multi-turn preformed loop, power supply and simple installation instructions. The loop should be mounted vertically in accordance with the installation instructions. Other installation methods are also available.
The CLD1 in this application will project a field to the requirements of IEC60118-4 approximately 1m from the preformed loop.
The CLD1 is designed for small perimeter loop applications in rooms or in vehicles. Coverage with a single turn loop:
|Room aspect ratio||1:1||2:1||3:1|
|Maximum area coverage m2||20||30||35|
The CLD1 is DC powered making it ideal for use in small vehicles such as taxis, private cars and small boats. We recommend a multi-turn loop in the headlining of the vehicle cabin – contact Ampetronic for an application guide.
With maximum current output the CLD1 can drive:
When operating below maximum output, the CLD1 can drive longer cable lengths – contact Ampetronic for more details.
Maximum cable length is dependent on cable type and on the application.
|Cable type||Maximum Cable Length (m)|
|1.8mm2 flat copper||tape 101m|
|Power||12V DC @ 1.0A max.
Fuse fitted to PCB, type T 1.6A L
Green LED Power indicator
|Input 1||Microphone input
Suitable for unbalanced electret microphone
3.5mm mono jack socket
Input impedance 8kΩ.
6v bias via 10kΩ source
Sensitivity -60 dBu for max output
Overload level -14 dBu.
Recessed control on front panel
|Input 2||Switchable line / microphone
Recessed switch on connector panel
Microphone as for input 1
Input impedance 820kΩ
Sensitivity -20dBu for max output
|Drive voltage||>3.2VRMS >4.5Vpk at maximum output current|
|Drive current||2.4ARMS 3.4Apk continuous 1kHz sine wave
Short term peak >4.8Apk
LED indicator on front panel
|Loop resistance||0.3Ω to 1.0Ω resistive or|
|Loop connector||Vibration proof clamps, accept 0.5 to 1.3mm2|
|Idle||1/6 peak Output Current (Speech)||1/3 peak Output Current (Pink noise)||Full Power|
|Driver||Channels||Current (ARMS)||Load Resistance (Ohms)||AC In (W)||BTU||AC In (W)||BTU||AC In (W)||BTU||AC In (W)||BTU|
|Frequency response||80Hz to 6.3kHz ±1.5dB|
|Automatic gain control||AGC optimised for speech
Dynamic range >36dB
Green LED indicator on front panel
|Metal loss correction||0 to 4.5dB/octave
Recessed control on front panel
|Dimensions||128mm, 74mm, 35mm|
|Environment||IP20 : 20 to 90% relative humidity, -20ºC to 50ºC|
|Mounting||Horizontal or vertical panel or wall mount, with 2 screw fixings|