hallo Rossini
hier mal ein Auszug aus der Bedienungsanleitung vom KRK Sub RP-10S (Ist ja auf der Seite von KRK als PDF Datei runterzuladen). Die ist sehr gut für die Einstellung des Samson Sub zu gebrauchen. So wie´s aussieht ist die beste Übergangsfrequenz dann 80Hz für die KRK Boxen. Bestens ist auch, das mit der Samson Sub eine stufenlose Einstellung von 40Hz-180Hz machbar ist.Beim KRK Sub gibts nur drei feste Einstellungsfrequenzen (50Hz+80Hz+130Hz).
Und mit den KRK Einstellungstipps in dem Manual ist das ja wirklich eine tolle Sache.
Setting Subwoofer Levels
Once the subwoofer is in position, its level needs to be matched with the near-field
speakers. For stereo systems, the process is straightforward. Obtain an SPL
(Sound Pressure Level) meter. Set the low-pass [g=43]filter[/g] on the KRK subwoofer back
plate to 80 Hz (12 o'clock position) — if you will be using the internal high-pass filtered
outputs from the subwoofer to the near-field speakers.
Now, route 1-octave wide, band-pass pink noise to the monitor system, which will
be sent to the main speakers through the subwoofer or [g=118]bass[/g]-management filters. A
good choice is 500 to 1,000 Hz band-passed pink noise, which is within the fundamental
frequency range of many vocalists, and minimizes high-frequency problems
but doesn't excite the subwoofer. Set this to a comfortable monitoring level.
(Typically 85 decibels SPL using the C response curve on the SPL meter)
Next, route 1-octave, band-passed, [g=118]bass[/g] pink noise to the subwoofer via the same
[g=43]filter[/g] path. A good noise choice is 35 to 70 Hz, which is below the 80-Hz frequency
of the subwoofer high-pass [g=43]filter[/g], but sufficiently high enough that most subwoofers
will have adequate response in that band. Set the [g=105]gain[/g] of the subwoofer level control
until it matches the same 85-decibel SPL level.
Then, turn up the low-pass [g=43]filter[/g] control on the subwoofer to 130 Hz. This allows
the [g=118]bass[/g] energy between the near-field speakers and subwoofer to overlap. While
listening to it from the console mixing position, route pink noise with a band-pass of
80 Hz to 130 Hz to the speaker system. Have someone flip the phase switch
between 0 and 180 degrees, and then back, and note which position sounds loudest.
The loudest position is correct and in phase. Now return the low-pass [g=43]filter[/g] to
the 80-Hz position (or another frequency if you are using external high-pass filters
for the near-field speakers). Your subwoofer should now be properly aligned for
phase, level and spectral response.
Gruss
RT