Mosconi HLA-SLIM (HP) 2-channel high-low adapter, high power

The Mosconi HLA-SLIM is an extremely compact, 2-channel, high-low adapter designed for modern vehicle audio systems with high-power head units (BTL outputs). Its lack of plastic housings and plug connections allows for particularly space-saving and inconspicuous installation — ideal for cramped spaces and OEM-like integration.

The HLA-SLIM HP (high power) is designed for speaker outputs of up to 50 watts, making it suitable for more powerful factory radios. Both versions have an integrated remote output with a load capacity of up to 100 mA that automatically turns on external amplifiers or digital signal processors (DSPs).

The remote signal is generated based on the detection of a constant DC voltage at the BTL outputs of modern, high-power head units. An applied voltage of at least 3 V DC is required at one input. The HLA-SLIM/HLA-SLIM HP only evaluates this DC voltage, the music signal itself is not processed.

The Mosconi HLA-SLIM is a specialized solution for clearly defined OEM applications, offering reliable, interference-free remote generation in systems with BTL output stages.

Features

• 2-channel high-low adapter
• Compact, slim design
• Load capacity up to approximately 50W per channel (high power)
• Remote generation

Manufacturer Specifications

Standby power consumption: < 0.8 mA

Operational power consumption: < 15 mA (< 30 mA in the Dual version)

Protection against polarity reversal: Yes

Maximum permissible current at remote out: 100 mA (normal operation)

Minimum permissible load at remote out: 120 Ohms (normal operation)

Remote Out Voltage: > 12 V at Irem-out < 100 mA

Remote Out Short Circuit Protection: Yes (to ground)

Maximum short-circuit duration at Remote Out: < 10 second (*)

Total harmonic distortion: < 0.01 %

Rate of increase: 10 V/uS

S/N signal-to-noise ratio: > 100 dB

Channel separation: > 60 dB

Common-mode noise suppression: > 60 dB

Downward conversion ratio: 4:1 V/V

High-level input ballast impedance: 45 Ohms / 2 W each channel

Maximum continuous power (sine wave) at 4 Ohms: 25 Wrms x CH

Maximum permissible rated load capacity of the head unit: 50 W x CH (**)

Maximum output signal at THD: < 0.1 % 3.2 Vrms

Minimum output load impedance: 2 kOhms

(*) Exceeding the maximum permissible time may cause permanent damage to the device.
(**) Maximum actual RMS rated power, not PMPO, peak, etc.

(RMS = Root Mean Square, measure of continuous power in audio devices)

Manufacturer Documents

MANUAL for Mosconi HLA-SLIM (HP) Adapter

catb v1 03.25.2026