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Thanks for purchasing this 350W Subwoofer Amplifier. The
amplifier is designed for home theater application. It features an
Extension (Or Rumble) Filter that can be used to correct the bass roll-
off of the subwoofer and/or to adjust for room response in the bass
band. In addition, the amplifier is packed with other standard
features such as both speaker level and line level inputs, high-pass
line outputs (12db/oct) for the satellite speakers, continuously
adjustable crossover frequency (40-160hz) for the subwoofer
output, automatic on/off switch (activated by input signal), and a
subwoofer volume control. Mated with a high quality subwoofer
driver, its
350W@4ohm
Thermal protection and short circuit protection circuitry ensure
long-lasting durability.
Note: 1. The auto on is only available on left channel input.
2. This amp is intended to be used with a HT receiver, where phase control is not needed. For
musical applications, where phase control is important, we recommend the special edition
amps.
Technical specs
Crossover frequency control
Phase control
Power switch (Auto ON/OFF)
Volume control
Line in
Line out
High Level in
350W Subwoofer Amplifier
Rythmik Audio
From
output is enough to shake your room.
Continuously variable for the subwoofer from 40hz to 160hz, 2
order characteristic (12db/oct).
Continuously adjustable phase lag control on the subwoofer from 0
to 180 degrees. Not recommended to use. Please use delay time
adjustment on the home-theater receiver to adjust the phase.
When the switch is in the auto position, the amplifier will turn on
when the left channel input signal is present. There are also ON and
OFF positions that can override this function.
Adjust the output level of subwoofer.
These are line level RCA inputs. Use them to connect pre-outs or
preamplifier outputs. These inputs are summed as mono. It is the
preferred input method. Mono line level signals needs to connect left
channel input. See setup section for more explanation.
This line level RCA outputs is high-pass at 100hz (-3db) for satellite
output if the amplifier(s) driving the satellite has a line level direct
inputs.
Speaker level input. Use these inputs when the line level outputs
from your receiver are not available. Connect these inputs directly
from the amp outs the drive satellite (or front) speakers.
www.rythmikaudio.com
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Summary of Contents for Rythmik audio Subwoofer Amplifier
- Page 1 Rythmik Audio From www.rythmikaudio.com Thanks for purchasing this 350W Subwoofer Amplifier. The amplifier is designed for home theater application. It features an extension (or rumble) filter that can be used to correct the bass roll- off of the subwoofer and/or to adjust for room response in the bass band.
- Page 2 High Level out Speaker level outputs to drive satellite speakers when one uses the speaker level inputs. It is not recommended to use these outputs Frequency Control This controls the frequency of the extension (or rumble) filter. Three (Extension Filter) positions are available: 14hz, 20hz, and 28hz.
- Page 3 damping settings. From top to bottom are low damping, medium damping, and high damping. The Q values are approximately 0.60, 1.07, 1.33, for high, med, and low damping, respectively. The boost for med (low) damping is about 1.3db (3db). The true –3db points is somewhat lower than 20hz. Therefore one should think of this frequency setting as where the roll-off starts, not where –3db point is.
- Page 4 (or 7 o’clock). Note that in Figure 18, a dip is about to form at the crossover point. Other Recommendations This subwoofer amplifier is NOT recommended for sealed box speakers with DC voice coil resistance of less than 2.5 ohm, nor for vented box (passive radiator) speakers with DC voice coil resistance of less than...
- Page 5 Auto-off It takes about 20 minutes to enter the standby mode even after the input signal is shut-off. This is a feature, not a bug, because it prevents unnecessary on and off switches. Reset the amp After triggering the protection circuitry, one can reset the amp by either 1) turn the power switch on the plate to off position and then back to on position, or 2) unplug the power core and then plug in again.
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