RBH Sound Speaker A 605 70 User Guide

A-605/70  
In-ceiling 2-way Speaker  
(8 Ohm 70/100 Volt Ready)  
O w n e r ’ s M a n u a l  
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Features  
The A-605/70 is the budget-minded answer for both residential and commercial  
in-ceiling speaker applications. The A-605/70 employs an 6½-inch polygraphite  
woofer cone and a ¾-inch soft swivel dome tweeter for great sound on a budget.  
Other amenities include a UL listed integral rear enclosure and a built-in multi-tap  
transformer, enabling the A-605/70 to be used with either 8 Ohm or 70/100 Volt  
audio systems. The A-605/70 provides full-range performance while exceeding  
building code compliance. The metal enclosure reinforces bass frequencies allowing  
a deeper and more controlled bass response. A powerful magnet, ensures accurate  
dynamic reproduction.  
Steep acoustic slope crossovers are used to integrate drivers. The use of steep  
crossover slopes allows high power handling, minimizes driver interaction anomalies,  
and maximizes the clarity with which each driver is able to produce its respective  
frequency band. Sophisticated computer modeling techniques are used extensively in  
the RBH Sound speaker design process.  
A switch connected to the tweeter allows you to custom tailor the sound to your  
tastes. This switch is located next to the woofer on the front baffle of the speaker  
and has three positions: +3dB, 0dB, -3dB. The +3dB position increases output of  
the tweeter, the -3dB position decreases the output of the tweeter relative to the  
woofer. The 0dB position is the factory setting and generally provides the most  
natural response from the speaker.  
The use of a 70/100 volt transformer allows many speakers to be used together by running  
a connecting wire from one speaker to the next, without concern for the impedance seen  
by the amplifier. A 70/100 volt amplifier must be used to accomplish this.  
WARNING: Refer to the installation and wiring diagrams sections to properly install  
a 70 volt system.  
Installation  
IMPORTANT: This product must be installed in accordance with your local area’s  
building codes and regulations. This may require use of an additional support bracket,  
depending on the installation. The speaker  
has been encased in a back can with the  
terminals on the outside of the back can  
for easy installation.  
1. To install the wire push the end of  
the binding post in and run the wire  
into the hole on top of the terminal,  
then release the terminal to securely  
attach wire to the speaker.  
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Installation (continued)  
NOTE: The binding posts will accept a maximum wire gauge of 14 AWG and a  
minimum wire gauge of 18 AWG. Please refer to the NEC (National Electrical Code)  
for further information regarding the permissible wire size.  
2. Install speaker into the ceiling.  
NOTE: Carefully tuck the speaker wires up  
into the ceiling so they  
do not get pinched.  
3. Set the three switches located on the  
face of the speaker to the proper setting  
according to the installation, see the  
guidelines below:  
A: The A-605/70 can be used in a 70/100  
volt system or as a standard 8 Ohm  
in-ceiling speaker. To properly set the  
speaker to a 70/100 volt system or as a  
standard 8 Ohm operation slide the switch to the proper position on the face  
of the speaker.  
NOTE: In 70/100 volt operation, be sure to appropriately set the selector  
according to the power output of the amplifier being used and the number  
of speakers being installed. In 8 Ohm operation, be sure to set the selector  
to the 8 Ohm setting.  
B: Slide the switch into the proper position in order to choose from 2, 4, 8 and  
16 Watt taps in 70/100 volt operation.  
C: To customize the sound of the tweeter slide the switch located on the front  
baffle of the speaker to either: +3dB, 0dB, -3dB.  
A: Switch for 70/100 Volt  
or 8 Ohms Operation.  
B: Switch for Watt Taps in  
70/100 Volt Operation.  
C: Switch for Tweeter  
Adjustment.  
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Wiring Diagrams  
CAUTION: If your amplifier isn’t capable of handling the impedance of all connected  
speakers, this may result in overloading the amplifier and may cause possible damage  
to the amplifier. Check your amplifier’s documentation for proper impedance levels.  
Parallel Connection  
A parallel connection exists when speakers are connected directly to an amplifier (as  
shown in the illustration below). Each speaker’s positive terminal is connected to the  
amplifier’s positive terminal, and each negative terminal is directly connected to the  
amplifier’s negative terminal. This type of connection should be made when using a  
70/100 Volt amplifier as shown in the diagram below.  
NOTE: In this example, each speaker is set to 70/100 Volt operation and is being  
powered by a 70/100 Volt amplifier. Make sure to properly select 70/100 Volt or 8 Ohm  
operation before connecting the speakers to the amplifier.  
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Specifications  
Model:  
A-605/70  
Architectural  
Series:  
In-ceiling 2-way Speaker (8 Ohm or 70/100 Volt Ready)  
88Hz-20kHz 3dB  
System Type:  
Frequency Response:  
Sensitivity:  
88dB (2.83V/1 meter)  
2-60 Watts  
Recommended Power:  
Woofer(s):  
(1) 6½” (165mm) Polygraphite Cone  
(1) ¾” (19mm) Silk Dome Swivel  
3,000 Hz  
Tweeter(s):  
Crossover Frequencies:  
Crossover Slope:  
Impedance:  
12dB/Octave  
8 Ohm or 70/100 Volt  
White Frame (paintable)  
White Aluminum (paintable)  
8” (203mm) Dia.  
Cabinet/Color:  
Grille:  
Cutout Dimensions:  
Finished Dimensions:  
9-1/8” (232mm) W  
4-1/2” (114mm) D  
4 lbs. (1.81 Kg)  
Weight:  
25 Years (Warranted from date of purchase to be free from defects and workmanship.)  
Warranty:  
70/100 Volt Operation  
70/100 Volt Taps  
2, 4, 8 and 16 Watts  
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Troubleshooting  
Situation  
Probable Cause  
Solution  
No sound from speakers.  
Speaker wire not connected.  
Make sure wire is properly  
connected at both the  
speaker and the amplifier  
observing proper polarity.  
Speaker selector on amplifier Activate proper speaker  
is not on.  
selector on amplifier.  
No sound from one speaker.  
Balance control on receiver  
or preamp is not centered.  
Place balance control in  
the center.  
Speaker wire not completely  
connected.  
Check all connections at  
amplifier and speakers.  
Very little bass and/or  
imaging.  
Speakers are wired  
out of phase.  
Check entire system for  
proper polarity and make  
adjustments as necessary.  
Warranty  
Your A-605/70 In-ceiling 2-way speaker is covered by a limited warranty against  
defects in materials and workmanship for a period of 25 years. This warranty is  
provided by the authorized RBH Sound dealer where the speaker was purchased.  
Warranty repair will be performed only when your purchase receipt is presented as  
proof of ownership and date of purchase. Defective parts will be repaired or replaced  
without charge by your dealer’s store or the location designated by RBH Sound  
authorized to service RBH Sound products. Charges for unauthorized service and  
transportation cost are not reimbursable under this warranty. This warranty becomes  
void if the product has been damaged by alteration, misuse or neglect. RBH Sound  
assumes no liability for property damage or any other incidental or consequential  
damage whatsoever which may result from the failure of this product. Any and all  
warranties of merchantability and fitness implied by law are limited to the duration  
of this express warranty. Some states do not allow limitations on how long an implied  
warranty lasts, so the above limitations may not apply to you. Some states do not  
allow the exclusion or limitation of incidental or consequential damages, so the  
above limitation or exclusion may not apply to you.  
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Redefining the Way You Experience Sound.TM  
382 Marshall Way, Layton, Utah • USA • 84041  
Toll Free: (800) 543-2205 • Fax: (801) 543-3300  
It is RBH Sound policy to continuously incorporate improvements into our products; all specifications are subject to change without notice.  
Copyright 2009 RBH Sound. All Rights Reserved.  
©
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