Operation Manual

You have purchased one of the finest car-audio trunk box
subwoofers available today. RODEK bandpass subwoofers
are engineered and manufactured to set new benchmarks
of bass performance and technical reliability. Both available
subwoofer models are based on the “push-pull” compound
arrangement, i.e. two woofers that are mounted face to face.
The result of this unique construction is deeper bass with
more impact and higher power handling, compared to boxes
deploying one woofer only with the same net volume.
Both box models use MDF for the cabinet construction and
are equipped with RODEK RW12 woofers.
Please read and follow the provided installation and operating
instructions carefully, in order to benefit from the full sound
quality and performance of this high quality product.
Special Features:
■ Loaded with two or four RW12 push-pull subwoofers
■ Optimized for best low-end extension and high SPL
■ Large cross section ports with blue glowing „needles“
■ CNC routed MDF enclosure of compact dimensions
■ Carpet covered main enclosure with PA-painted front
■ Acrylic glass window with blue LED backlighting
■ Space optimized angled rear wall construction
■ Internal damping for best sound quality and bass impact
■ Spring-loaded terminal with separate 12V input
Placement ➞ Connection ➞ Settings
Basically, your trunkbox subwoofer is designed to be placed
in the trunk compartment of your car. The terminal binding
posts allow quick and easy installation or removal of the trunk
box – if necessary.
Only start crossover adjustment of the amps’ or headunits’
crossover lowpass filter, after setting „treble“, „bass“ and „loud-
ness“ controls on the head unit to neutral/zero position.
Your bandpass subwoofer needs a low-pass filtered signal
with 12dB/oct. slope steepness for best results.
➞ Connect the speaker wire of your subwoofer amp channel
to the terminal of the subwoofer box.
➞ Set the lowpass crossover frequency of the amp channel(s)
driving the sub to approx. 80 Hz
➞ Increase the input gain of the subwoofer channel(s), until
bass output is loud enough
➞ Turn down the volume and then, try out both electrical in-
phase and out-of-phase polarity connections
„In-phase“ connection of your subwoofer is critical – if your
sub plays out of phase, the output at the crossover frequency
region will be depressed due to cancellation effects.
Thus one connection polarity will give you a „fatter“ and more
dynamic bass reproduction in the 80Hz range.
In general, selecting a crossover frequency too low will yield
to an unprecise and infra-bass heavy bass sound lacking
punch, whilst setting the corresponding lowpass x-over fre-
quency point to high, will render a hard and droning sound
reproduction.
COMPOUND BANDPASS SYSTEM
Specifications RN112 RN212
Peak Input Power: 400 W 2 x 400 W
Continuous Input Power: 250 W RMS 2 x 250 W
Frequency Response (In-Car -3dB): 20 – 120 Hz 20 – 120 Hz
Sensitivity (1W/1m): 92 dB 95 dB
Nominal Impedance: 4 ohms 2 x 4 ohms
Dimensions (WxHxD): 500 x 390 x 435/335 mm 870 x 390 x 435/335 mm
RN112 / RN212
12300 Edison Way · Garden Grove · CA 92841 U. S. A.
www.rodek.com
Limited warranty: 2 years, starting from purchase at retail.
This warranty does not cover any damage due to:
1. Speaker overload due to excessive or distorted amplifier power etc.
2. Exposure to excessive humidity, fluids, heat, direct sunrays or excessive dirt
or dust.
3. Accidents or abuse, unauthorized repair attempts and modifications not
explicitly authorized by the manufacturer
WARRANTY CONDITIONS
This warranty is limited to the repair or the replace-
ment of the defective product at the manufacturer´s
option and does not include any other form of da-
mage, whether incidential, consequential or other-
wise.
This warranty will not cover any loss during trans-
portation, transport costs or any other damage
caused by transport or shipment of the product.
For safety and legal reasons, it might be prohibited using the box illumination while operating a car. Restrictions may apply
in certain countries. For making sure to follow all national requirements and not to distract drivers attention, we recommend
connecting the box illumination to the interior light of the trunk.
RN112 RN212 Manual.indd 2 09.04.2007 11:15:42 Uhr