Adjustment Of The Crossover; 4 Ohms Mode (Ex Works); 2 Ohms Mode; Function Of Jumpers - HELIX Competition RS 6.3 Instruction Manual

Adjustment of the crossover

The speakers of the system can be adjusted to your individual
listening habits by repositioning the jumpers.
Please make sure to turn off the entire system before changing the
jumper positions.
Function of jumper J1:
4- or 2 ohms mode
Jumper J1 adjusts the crossover to the so called 4- or 2 ohms
mode. The basic adjustment (ex works) is the 4 ohms mode
which means that only one pair of woofers is used in the vehicle.
When using two additional RS806 Competition speakers as a
double bass system on each side, e.g. in custom made door
panels, the jumpers J1 must be removed and fixed into the
2 ohms position (see fig. 1 and 2).
Function of jumper J2:
Mid level adjustment
Jumper J2 is used for the individual adjustment of the mid level
(adjustment of level in relation to the level of the bass and the
tweeter). In the 0 dB-position (ex works) the mid- range plays at
the same level as tweeter and woofer. This should be basis of your
fine tuning.
Depending on the placement of the chassis and your individual
listening habits the level of the midrange can be raised or lowe-
red by changing the position of jumper J2.
In case of placement in the dash or higher the level should be
lowered (-1,5 dB / -3 dB). In lower positions such as door- or kick
panels the level should rather stay at 0 dB or even be raised to
+3 dB.
Function of jumper J3:
Mid level depending on jumper position
6

4 ohms mode (ex works)

J 1 J 2
Input Woofer Midrange
Fig. 1
Tweeter level adjustment
Jumper J3 is used for the individual adjustment of the tweeter
level (adjustment of level in relation to the bass and the midran-
ge). For functions and recommendations please refer to the
discription of the midrange jumper J2.
Tweeter level depending on jumper position
J 3
Tweeter
1 x RS806 per channel
Fig. 2
Please make sure that changes in the position of the jumpers J1,
J2 and J3 must always be made simultaneously for the right and
the left channel on both crossovers.
Special note: Try to connect the midrange out of phase to the
crossovers as the resulting 180° phase shift may well improve the
overall staging of your system.

2 ohms mode

J 1 J 2 J 3
Input Woofer Midrange Tweeter
2 x RS806 per channel