the gain of the two mixer channels so there is no noticeable difference in level when switching
the DM1.
Always begin by testing at a low volume level to make sure you do not encounter any pops or
clicks when the DM1’s footswitch is depressed. If you do hear pops or clicks, check for phan-
tom power to make sure it is off. If you hear any hum, try engaging the ground lift switch.
USING THE RADIAL HOTSHOT DM1
The concept is simple: Connect the DM1 to two mixer channels. Set the fi rst channel to route
the signal to the main PA and monitors. Set the second channel to route the signal only to the
monitors. Place the DM1 at the base of the microphone stand where the performer can use the
footswitch. When the DM1 footswitch is
not
depressed, the microphone will work as it normally
does and the signal will go to the main PA system and monitors. When the switch
is
depressed,
the DM1 mutes OUTPUT-1 and redirects the signal to OUTPUT-2. The microphone will be
muted in the main PA system as long as the footswitch is held down. Releasing the footswitch
will revert to normal operation. Again, before you turn the volume up, begin by testing the DM1
to make sure the transition is smooth and noise-free during your sound check.
USING THE DM1 WITH A SUB-MIXER
If you are limited for extra channels on your mixer you can use the DM1 with a sub-mixer.
This is a popular setup for bands that have each performer equipped with in-ear monitoring
systems. A sub-mixer also will make it easier to interface multiple DM1s with a venue’s PA and
monitor systems.
Follow the same basic instructions as outlined, only this time, connect OUTPUT-2 from each
DM1 to a sub-mixer which combines the signals to one channel on your main or monitor mixer.
This setup allows you to consolidate all of the ‘intercom’ channels, saving valuable inputs on
your mixer.
USING THE DM1 AS A COUGH MUTE
The DM1 can be used as a cough mute by simply not connecting OUTPUT-2. Connect OUT-
PUT-1 as above to the main PA system. Leave OUTPUT-2 disconnected. The microphone
can now be muted whenever the footswitch is depressed. A simple solution for headset and
lavalier mic users!
CONGRATULATIONS
on your purchase of the Radial HotShot DM1. The Radial HotShot DM1
is a foot-controllable device that allows a vocalist to mute his or her microphone and redirect the
signal to a second output to allow communication through the monitor system, in-ear wireless
system or intercom.
Designed specifi cally for dynamic microphones, the DM1 is completely passive and does not
require any power. The foot selector switch is momentary, which means that the switching only
occurs when the footswitch is depressed. This eliminates the need for indicator lights and bat-
teries or external power.
Typical applications include muting the FOH (front-of-house) microphone to speak to other
musicians through the in-ear monitoring systems, muting the FOH to speak with technical staff
or muting a mic for a cough.
CONNECTING THE RADIAL HOTSHOT DM1
Before making any connections, please confi rm the sound system is powered off and the vol-
ume controls are turned all the way down.
Following the simple block diagram below, connect a dynamic microphone to the INPUT of the
DM1. Connect OUTPUT-1 to the fi rst channel of your mixer. Set this fi rst mixer channel to route
the signal to the main PA and monitors. Connect OUTPUT-2 to a second channel on your mixer.
Set this second channel to route the signal only to the monitors. With this setup, depressing the
DM1’s footswitch will effectively mute the microphone signal from the main PA mix. This allows
the musician using the microphone to speak with the other musicians or technical staff through
the monitors without the audience listening in.
TESTING THE RADIAL HOTSHOT DM1
At this point, your sound system should be turned off and the level controls at minimum.
Make
sure the 48V phantom power is turned off on the channels that you are connecting
the DM1 to.
Phantom power could cause loud pops in your sound system when the DM1 is
switched. You are now ready to turn on your sound system and test the DM1 to make sure it
works with your equipment.
Turn on your sound system. If this is the fi rst time you’re using the DM1 we suggest testing with
two mixer channels set identically so that the DM1 directs both its outputs to the same speaker
system. This way, you can minimize options when troubleshooting. It is a good idea to match
HotShot DM1 User Guide
Radial Engineering
HotShot DM1 User Guide
Radial Engineering
HotShot DM1 User Guide
Radial Engineering
FAQ
Can I use the DMI with a battery or phantom powered microphone?
Although the DM1 may work in some cases with condenser mics, we do not recommend it due to
power on/off transients which could cause the sound system to pop when switching. To be safe,
only use the DM1 with dynamic mics.
Why are there no light indicators on the DM1?
The DM1 is designed to be a discreet switcher that allows band members to speak among
themselves on stage or to technicians. A bright light going on and off during a performance can
distract the audience from the performance.
Can I accidentally leave the DM1 on?
No. The footswitch is momentary which means that it only works when it is being depressed.
This way, the only time it will mute is when you physically have your foot on the switch. This
completely eliminates the need for indicator lights.
Why should I be concerned about popping noise in the sound system?
When PA systems are turned up, a loud transient could potentially cause a tweeter to blow. By
testing the DM1 at low volume levels to make sure the DM1 does not cause any loud transients
like pops or clicks, you eliminate this concern.
Should I be worried about using the DM1 and the potential for pops causing system
failure?
No. We only underline this potential for problem so that you follow proper set-up
procedures and avoid these concerns all together. The DM1 essentially works like an ON-OFF
switch that is found on some microphones. Follow the setup procedures as outlined above and
you should be fi ne.
Can the HotShot be used in complex sound systems where there are separate FOH and
monitor mixers connected with a splitter snake?
Yes. The principal remains the same as when using the DM1 with a sub-mixer, only the HotShot’s
OUTPUT-1 connects to the main splitter snake which passes the signal to both the FOH and
monitor consoles. The following illustration outlines the basic connections for several HotShots
in such a situation.
Output-1
Mixer Ch 2
PA system
Monitor system
HotShot DM1
Footswitch
Mixer Ch 1
Output-2
Sub-mixer
Main Console Ch 1
PA system
Monitor system
HotShot DM1
Footswitch
Output-1
Output-2
Main Console Ch 2
Monitors Wedges
DM1 Output-1 connects
to main splitter snake.
Vocal 1
Vocal 2
Vocal 3
Vocal 4
DM1 Output-2
connects to
sub-mixer.
Sub-mixer
connects
to monitor
console.
Sub-mixer
FOH Split
Monitor Split
