Manual
page 5
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 LS1r Controller
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 hi 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 ampliers 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
Processing‘). 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 quality 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 rst. And
remarkably this means we rst need to step back into the analog domain of acoustics.
The spatial radiation behavior of a loudspeaker cannot be corrected electrically so it
should be taken care of rst.
GRIMM AUDIO LS1