Renkus-Heinz Loudspeaker - Manual (Page 4)

Loudspeaker User’s Manual
Loudspeaker User’s Manual
Loudspeaker User’s Manual
Loudspeaker User’s Manual
Page 4
Page 4
Page 5
Page 5
LIMITER CALIBRATION
You can use other signal processors with Renkus-Heinz loudspeakers, but in order to protect them from damage, you must do your best to
re-create the process Renkus-Heinz Engineering uses to set up the limiters. The following procedure is as close as you can get without ac-
cess to the specialized equipment we use at the factory.
You will need a sine wave generator (or a test CD with sine waves of various frequencies) and a volt meter.
1) Set up your system’s gain structure.
2) Disconnect the loudspeakers from the amplifier. Do not set
the limiters with the loudspeakers connected - you will damage
the loudspeakers. This damage is not covered by our warranty!
3) Feed a sine wave signal into the amplifier. Use a frequency in
the lower part of the driver’ s pass band: 60 Hz for subwoofers,
200 Hz for lows and fully passive speakers, 1 kHz for mid-
ranges or mid-highs and 2.5 kHz for compression drivers.
4) Connect the volt meter to the amplifier outputs.
5) Check Table 2 for the maximum RMS voltage that should
reach the loudspeaker based on its Program power rating.
Raise the level of the signal generator until the volt meter reads
two or three volts above the specified voltage.
6) Reduce the threshold control of the limiter until the voltmeter
reading is at or below the maximum from Table 2.
Table 2
2) On the inside of the connector panel, you’ll find a PC board and two connectors. The two position connector will have a cable assembly
plugged into it with the wires leading to the passive crossover. The four position connector will be empty. Circled in Figure 2.
3) Follow the wires to the passive crossover. Unplug the two-wire cable assembly from the crossover network by squeezing the locking tabs
on either side. Circled in Figure 3.
4) On the other end of the crossover network will be a four-wire cable assembly with the wires leading from the network to the individual
components. Unplug this cable in the same manner. Indicated by arrow in Figure 3.
5) Plug this four pin connector into the four pin receptacle on the input connector panel. The connector is keyed and will only insert the cor-
rect way. Circled in Figure 4.
6) Neatly tie the unused two-conductor wire harness to the panel so it’s available if it is ever desired to convert the loudspeaker back to fully
passive operation. Indicated by arrow in Figure 4.
7) Reinstall the input connector panel. Be careful not to over tighten the screws as you may strip the cabinet wood. Note that you can now
see the white connector through the window indicating that the loudspeaker is configured for bi-amplified use. Circled in Figure 5.
8) If you want to convert the loudspeaker back to fully passive operation, simply reverse these steps.
Figure 2 Figure 3 Figure 4 Figure 5
Following the above procedure will provide some protection against overpowering and damaging your loudspeakers. It is important to note
that if your amplifier is capable of peak-to-peak voltages in excess of those in the table, you also need to provide fast acting peak limiters for
your system.Renkus-Heinz controllers have all these functions incorporated into their design and only Loudspeaker Specific Processing cali-
brated at the Renkus-Heinz factory satisfies the terms of our warranty. If you use third party processing that is calibrated in the field, you will
not be able to obtain warranty replacements for blown speaker components.
If you do not need the full output of the loudspeaker for your application you can save money by using a smaller amplifier. You will still get
the best performance with Renkus-Heinz Loudspeaker Specific Processing.
USING THE UNIVERSAL MOUNTING HARDWARE ATTACHMENT POINTS
WARNING! Hanging loudspeakers is a serious undertaking that should be performed only by qualified and experi-
enced personnel. An architect or structural engineer should verify any building attachment points. Renkus-Heinz is
not responsible for any non-Renkus-Heinz products or for any misuse of Renkus-Heinz products. This publication
gives general information only and is not a manual for rigging or overhead suspension.
Installation versions of Renkus-Heinz loudspeakers typically have 12 threaded UMH attachment points. You can
install forged, load-rated shoulder eye bolts (available from Renkus-Heinz) into these points for use in hanging the
loudspeaker. Never suspend a loudspeaker from unrated hardware. Figure 1 shows a sectional view of a UMH at-
tachment bracket. While the UMH brackets are glued in at the factory, we still recommend that you remove adja-
cent bolts one at a time so that there is no danger of pushing the bracket into the cabinet accidently.
Renkus-Heinz recommends the following maximum working loads per loudspeaker cabinet when using Renkus-Heinz supplied eye bolts:
1/4-20 or M6 thread - 270lbs/122kg, 3/8-16 or M10 thread - 450lbs/204kg. You should use a minimum of two of the UMH points to suspend
any Renkus-Heinz loudspeaker. Always use thread locking compound for any eyebolts or other fasteners used to suspend loudspeakers.
U-BRACKET AND LOUDSPEAKER MOUNTING HARDWARE
If you ordered your loudspeaker with optional u-bracket or speaker mounting hardware, your loudspeaker will ship with flat head bolts in-
stalled in the attachment points. These flat head bolts are installed as place holders and are not intended for use with the brackets. Use the
bolts that come with the u-bracket assembly to attach the loudspeaker. See the instruction sheet enclosed with the brackets for details.
If your loudspeaker was shipped with a compatible nut plate for use with the OmniMount or Allen Products MultiMount, you can use the bolts
installed in the nut plate to attach the loudspeaker to the mount.
COMPLEX CONIC HORN ORIENTATION
Most of Renkus-Heinz’s Complex Conic horns are physically symmetrical and designed to allow rotation within
the enclosure. Figure 2 shows the Complex Conic horn orientation. For wide horizontal dispersion, the diffrac-
tion slot in the throat should be vertical.
Our unique TRue Array Principle design requires that Complex Conic horns be oriented with the narrow angle
of coverage horizontal. When you order a Reference Point Array, we ship the loudspeakers with the horns in
this orientation (diffraction slot horizontal). If you ordered single loudspeakers, the horns will be installed for
conventional cabinet vertical/horn horizontal installation. If you wish to use a “tight-packed” array, or install the
enclosures in a horizontal position while maintaining wide horizontal coverage, you can easily rotate the horns.
Rotating a Complex Conic horn is easy. First remove the grill. Then remove the eight flat head bolts securing
the horn to the cabinet. Gently pull the horn out of the cabinet just enough to clear the cut-out, rotate the horn 90 degrees and replace it in
the cutout. Finally, reinstall the bolts and the grill.
LOUDSPEAKERS WITH TRANSFORMERS INSTALLED
Renkus-Heinz loudspeakers are available with transformers installed for use with 70.7V and 100V constant voltage systems. The power rat-
ing on the model number plate will list the wattage tap and voltage for the factory installed transformer.
TROUBLESHOOTING TIPS
The two most useful trouble shooting tools are a known good loudspeaker and a known good source. The loudspeaker doesn’t have to be
especially big, an SGX61 would be fine. And the source could be a portable CD player or iPod with some adaptor cables and a small power
amplifier. Using these tools and the troubleshooting chart below, you should be able to diagnose most any problem you may have with your
system.