LCPQ 4040 Overview

The LCPQ 4040 is a transformer balanced, high performance all-discrete equalizer with four passive RLC sections in cascade configuration.

Each band has a variable level control ranging from -12dB to +12dB (or -6dB to +6dB). The four bands of equalization offer selectable Shelving/ Bell on the first and fourth band and selectable HiQ/ LowQ on the second and third band.

Each band can be independently bypassed. When an EQ band is not engaged, the audio signal still travels through the transformers and the discrete circuit but not through the RLC circuit and thus the unit can be used as a high quality unity gain line amp. In addition to the individual bypass, the unit employs a true bypass relay system, where the input signal is connected directly to the output. When the unit is not powered (or in situations where the power accidentally goes down), the bypass relay system is automatically activated and therefore the signal will not disappear.

The LCPQ 4040 features CARNHILL high-level audio signal input and output transformers and a combination of four CARNHILL and custom-made tapped inductors that were chosen after extended listening tests and measurements.

The unit consists of GRAYHILL rotary stepped switches for frequency selection, plastic conductive potentiometers for boosting/cutting, WIMA polypropylene (low tolerance) film capacitors in the RLC path, PANASONIC audio grade electrolytic capacitors in the active circuit and Neutrik connectors for the audio and power connections.

Each unit is hand-built and hand-wired. All the components are chosen and tested thoroughly for best performance, musicality and long-term reliability.

Features

• Fully discrete (transistor) circuit
• Transformer (CARNHILL) balanced input and output
• CARNHILL and custom made tapped inductors
• Thirty four selectable frequencies
• 12dB (or 6dB) of Gain/ Attenuation per band
• Selectable Shelving/ Bell on Band1 and Band4
• Selectable HiQ/ LowQ on Band2 and Band3
• True bypass relay system and Individual bypass on each band
• High quality NEUTRIK XLR connectors
• Low components tolerance for stereo configuration
• Hand-built and hand-wired

PS230 Overview

The PS 230 is a 3-rail linear power supply capable of powering two LCPQ 4040 units, housed in a robust enclosure.

The unit provides ±28V DC for the audio circuit and +24V DC for the relay bypass system and the bypass indicator (LED). In order to cut the cost (and for the shake of simplicity), a lot of audio euquipment use a common power rail for the audio circuit and for other functions such as relays, LEDs, lamps, etc. However, it is a better practice to use a dedicated power rail for all non-audio circuits. Therefore, the PS 230 has an additional +24V DC rail, which ensures that no unwanted noise (caused by the relays and the bypass indicator) is added to the audio signal.

The PS 230 can be switched for 115V AC or 230V AC operation and the mains fuse is accessible to the user from the rear side of the unit (in the IEC inlet).

Features

• High efficiency, low noise design
• Switchable 115V/ 230V AC
• Capable of powering two LCPQ 4040 units
• Separate power rails for the audio signal and the relay bypass system
• LED indicators for each power rail at the front of the unit
• High quality 6-pin Neutrik connectors
• Hand-built and hand-wired

Warranty

This item is sold without the Sound Pure 3-year warranty (used / B-stock / dealer-exempt). Coverage terms for items in this category live in Terms & Conditions, Section 27.

Returns

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