Points to Remember, Working Safely with Sound

POINTS TO REMEMBER

When using balanced connections use good quality twin screened audio cable. Check for instability at the output.

Always connect both conductors at both ends, and ensure that the screen is only connected at one end.

Do not disconnect the mains earth from each piece of equipment. This is needed to provide both safety and screen returns to the system star point.

It is important to remember that all equipment which is connected to the mains is a potential source of hum and interference and may radiate both electrostatic or electromagnetic radiation. In addition, the mains will also act as a carrier for many forms of RF interference generated by electric motors, air-conditioning units, thyristor light dimmers etc. Unless the earth system is clean, all attempts to improve hum noise levels will be futile. In extreme cases there will be no alternative but to provide a completely separate and independent `technical earth' to replace the incoming 'noisy earth'. However, always consult your local electricity supply authority to ensure that safety regulations are not being infringed.

WORKING SAFELY WITH SOUND

Although your new console will not make any noise until you feed it signals, it has the capability to produce sounds which when monitored through an amplifier or headphones can damage hearing. Always turn amplifiers down when turning your console on or off.

The table below is taken from the Occupational Safety & Health Administration directive on Occupational noise exposure (1926.52):

PERMISSIBLE NOISE EXPOSURE
DURATION PER DAY, HOURS	SOUND LEVEL dBA SLOW RESPONSE
8	90
6	92
4	95
3	97
2	100
1.5	102
1	105
0.5	110
<0.25	115

Conforming to this directive will minimise the risk of hearing damage caused by long listening periods. A simple rule to follow is the longer you listen the lower the average volume should be.

Please take care when working with your audio - if you are manipulating controls which you don’t understand (which we all do when we are learning), make sure your monitors are turned down. Remember that your ears are the most important tool of your trade, look after them, and they will look after you.

Most importantly - don’t be afraid to experiment to find out how each parameter affects the sound - this will extend your creativity and help you to get the best results.

Recommended Headphone Impedance >= 200 Ohms

1605, 1603 specifications

The SoundCraft 1603 and 1605 are renowned analog mixing consoles well-regarded in both live sound environments and studio settings. These mixers offer exceptional sound quality coupled with intuitive operation, making them a popular choice among audio engineers and musicians alike.

The SoundCraft 1603 is a 16-channel mixer featuring 3 buses, while the 1605 amplifies this with 16 channels and 5 buses, providing increased routing flexibility. Each channel is equipped with a high-quality microphone preamplifier, which delivers a warm, rich sound. The preamps feature a low-cut filter that aids in eliminating unwanted low-frequency noise, further enhancing audio clarity.

Both models come with an integrated 3-band EQ on each channel, complete with adjustable high, mid, and low frequencies. This allows for precise tone shaping, enabling users to sculpt their sound to fit various musical styles and requirements. The mid-band also features a sweepable frequency, providing the ability to target specific problematic frequencies in live settings, enhancing the overall mix.

Advanced technologies implemented within these consoles include the use of internal components that reduce noise levels and improve overall audio fidelity. The mixers are designed with ruggedness in mind, ensuring they withstand the rigors of live performance while providing the reliability necessary for studio applications.

Additional features that stand out include a range of auxiliary sends, allowing for flexible routing options for effects and monitor mixes. The mixers also support phantom power, making them ideal for use with condenser microphones. The user-friendly layout ensures quick access to all controls, allowing engineers to focus on mixing without unnecessary distractions.

Another key aspect is the mixer’s compact design, making it suitable for small venues, mobile setups, and studio environments where space is a premium. The sturdy construction and high-quality components ensure longevity, a significant advantage for professionals who rely on consistency in their equipment.

In summary, the SoundCraft 1603 and 1605 mixing consoles are excellent choices for those seeking high performance in a compact and user-friendly package. Their combination of advanced features, reliability, and sound quality has established them as essential tools for anyone serious about audio production and live sound reinforcement. Whether in a studio or on stage, these mixers deliver on all fronts, ensuring an exceptional experience for both the engineer and the audience.