RBH Sound Speaker 115RBH User Guide

RBH Series Cabinets  
Owner’s Manual  
210RBH  
410RBH  
115RBH  
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RBH Series Cabinets  
RBH Features  
RBH Series Cabinets are designed to offer the ultimate in sound quality and  
stage flexibility. They can be played in several positions, upright, stacked on  
2) Mode Switch:  
Switches between Horn Bi-Amp (HBA) mode and Full Range operation.  
their sides, or rocked back for close monitoring situations. A unique interlock- When using this cabinet with a GK HBA compatible head such as the  
ing corner design allows the cabinets to lock together in various positions.  
1001RB-II, this switch should be set to Bi-Amp. For operation with non HBA  
amplifiers this switch should be set to full range.  
Horn Bi-Amp (HBA) System:  
3) Full Range ¼'' Input:  
All RBH cabinets include a passive crossover for standard operation or may be  
used with GKs unique Horn Bi-Amp (HBA) System.  
Using a standard ¼'' speaker cable, this input jack provides full range  
operation with any bass amplifier head. HBA mode will not work with this  
jack.  
HBA compatible amplifiers use an electronic crossover to split the signal  
between the main amplifier and a separate horn (tweeter) amplifier. The  
horn amp sends signals above 5kHz to the horn while the main amplifier  
sends a full range signal to the woofers. Optionally you can engage the  
Woofer High-Cut to to cut signals above 5kHZ from the main amplifier. Both  
signals are delivered to the cabinet via a single 4-conductor high current twist-  
lock cable. This arrangement does two things for the sound:  
4) High Range Attenuator:  
Adjusts the volume level of the horn when the cabinet is in full range mode.  
When used in Bi-Amp mode with an HBA compatible amplifier like the  
1001RB-II, this control is bypassed and the horn level is adjusted by using the  
Tweeter control on the front panel of the amplifier.  
1) Electronic crossovers, can be far superior to the passive crossover found in  
full range speaker cabinets, providing a more seamless, accurate sound.  
Horn Bi-Amp Mode:  
When the mode switch is set to Bi-Amp, the passive crossover is bypassed and  
the cabinet may be used with an HBA compatible head such as the GK  
1001RB-II. Use a 4-conductor, high current twist-lock speaker cable (supplied  
with GK HBA amplifiers) to connect the head to the cabinet Adjustments to  
the tweeter and woofer signals are controlled from the amplifer’s front panel.  
(the High Range attenuator in the cabinet is bypassed). Now you can push  
the woofers to the max., while the tweeter remains clean, crisp and free of  
clipping distortion.  
2) With separate power amps for the horn and woofer, the artist can overdrive  
the woofer power amp (creating the desired growl) while keeping the horn  
amplifier clean and undistorted.  
Input Plate:  
Full Range Mode:  
The RBH series cabinets are configured for full range operation by setting the  
mode switch to Full Range. In this mode you can use either the ¼” or the  
twist-lock connector for operation. If you are using the twist-lock connector,  
make sure the amp positive lead is connected to 1+ and the amp negative  
lead is connected to 1- on the connector. In this mode the cabinet is setup for  
full range operation and the tweeter level is controlled by the High Range  
control on the RBH cabinet.  
Stacking RBH Cabinets:  
To insure the safe setup of the RBH series cabinets and a GK amplifier please  
follow these basic procedures. When stacking multiple 115RBH and 410RBH  
cabinets never place them so the handle sides are facing one another. The  
cabinets’ handles should be oriented to the left and right sides of the unit and  
not the top and bottom. (See “Detail A) When stacking a 210RBH cabinet  
on a 115RBH or 410RBH, place the 210RBH on an upright, non-handle side  
of the other cabinet. (See “Detail B) When using a single cabinet, the  
amplifier may be placed on either the non-handle (See “Detail Con page 4)  
or handle side (See “Detail D). Stacking multiple 210RBH cabinets is not  
recommended. All RBH cabinets can be tilted back like a floor monitor.  
1
2
3
4
1) High Current Twist-Lock Connector:  
A Speakon® compatible connector which allows for Horn Bi-Amp (HBA)  
operation when using the 4-conductor twist-lock speaker cable provided with  
GK HBA compatible amplifiers. Pins 1+ and 1- connect the main amplifier  
to the woofers in the cabinet. Pins 2+ and 2-, connect the horn amplifier to  
the tweeter. By using only pins 1+ and 1- this connector may also be used for  
full range operation when Full Range mode is selected.  
3
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RBH Series Cabinets  
Specifications  
210RBH  
410RBH/8  
410RBH/4  
115RBH  
Cabinet:  
Power Handling:  
Impedance:  
Port  
400W  
800W  
800W  
400W  
8 Ohms  
8 Ohms  
4 Ohms  
8 Ohms  
Front Slotted  
Rock Back  
Dimensions:  
Yes  
Yes  
Yes  
Yes  
24''W  
20''H  
15.5''D  
27.5''W  
23''H  
18''D  
27.5'W  
23''H  
18''D  
27.5''W  
23''H  
18''D  
Detail A  
Weight:  
59 lbs  
No  
92 lbs  
92 lbs  
72 lbs  
Yes  
Covering:  
Black Carpet  
¾ '' Birch With Dado Joints  
Construction  
Removable Castors  
Yes  
Yes  
Speakers:  
Woofer:  
Basket  
2xP10/200-16  
1xP508  
4xP10/200-32  
4xP10/200-16  
1xP508  
1xP15/400-8  
1xP508  
Cast Frame  
Horn  
1xP508  
Detail B  
Inputs:  
¼ in Full Range  
High Current Twist-Lock  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Cross-Over:  
Passive Cross-Over  
18dB/Oct.  
18dB/Oct.  
Yes  
18dB/Oct.  
Yes  
18dB/Oct.  
Yes  
Horn Bi-Amp System (HBA) Yes  
Horn Attenuator  
Horn Protection  
Yes  
Yes  
Yes  
Yes  
Power Compensating  
Detail C  
Performance:  
Sensitivity  
103 dB  
106 dB  
31 Hz-18kHz  
106dB  
31 Hz-18kHz  
103 dB  
Usable Response  
40 Hz-18kHz  
31Hz-18kHz  
Detail D  
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