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Congratulations on your purchase of the Grimm Audio LS1 playback system.
In this manual we like to assist you in setting up the LS1 playback system. You will learn
how to connect various sources and how to control the electronics, the hardware remote
and the LS1 remote software for Mac and PC. Furthermore we like to explain what makes
the LS1 playback system so different from all other hifi speakers, why they look, function
and most important sound the way they do. If you are about to unpack and assemble
your LS1 set, please move forward to „Assembly and Install“ on page 14 of this manual.
Grimm Audio‘s LS1 was designed to show that one speaker can be both analytically
precise and musically pleasing at the same time. When we developed the LS1, we had
the professional user in mind. In a studio you need a speaker that is as linear as possible.
‚Voicing‘, as the practice of tuning a loudspeakers‘ response by ear is called, only masks
abberations from linearity. The better way is to carefully measure the response with the
best test gear available and use that as a guide. We tested the LS1 in a large anechoic
room using a measurement microphone that we calibrated ourselves with a spark gap
reference. In fact we perform part of these measurements as a standard routine during
production, so the response of your LS1 loudspeakers has also been individually
measured and corrected.
By integrating top quality digital signal processing, converters and amplifiers in one of the
speakers‘ legs, we were able to apply technical strategies no one had used before. As a
consequence, the LS1 is not just a loudspeaker, but a complete audio system that only
needs an analog or digital line source to perform. CD players, phono stages,
music servers or computers all connect straight to the speaker.
The correction of the measured response is done digitally in DSP („Digital Signal Proces-
sing“). Digital processing offers a much higher degree of correction then possible in the
analog domain, and without the distortion associated with analog components. Digital
sources are fed directly into the DSP, in case you like to listen to an analog source we
included a very high quaity AD converter in the system. The DSP in the LS1 takes care of
three important tasks: response correction of the drivers, cross-over between the drivers
and phase correction of the cross-over. Let‘s look at the response correction first. And
remarkably this means we first need to step back into the analog domain of acoustics.
The acoustic behavior of a loudspeaker cannot be corrected electrically so it should be
taken care of first.
GRIMM AUDIO LS1
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