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Blue Thunder PRO50X2 Amplifier
- Advanced Computerized Protection Circuitry -
improved protection circuitry, for fewer failures. When the protection circuit is activated, the amp will
turn off.
- Larger Terminal Blocks -
all models can accept up to 4 gauge wire (i.e. more current capability)
- Larger Heatsink -
each model "grew up" by 1 to 2 inches with substantially more mass. Greater cooling capabilities, and
longer initial time to thermal.
- Larger Output MOSFETS And Larger Power Supply MOSFETS -
provide better power stability and improved reliability.
- New Thermal Pads Under MOSFETS -
because silicon grease, formerly used under the MOSFETS, broke down over time and spilled out onto circuit board,
we replaced it with polymer thermal pads that offer better transfer of heat from MOSFET to the heatsink. Over time,
the polymer actually fills in the pores, creating an even tighter seal. This improvement offers a greater degree
of consistency in manufacture for better product reliability.
- Improved ISO-FEET -
upgraded to a more pliable nylon material, for improved durability and flexibility.
- 8-Volt RMS Input -
this Large Signal capability allows better integration with high voltage output source units, increased dynamic
range and better Signal-to-Noise ratio in the system.
- Continuously Variable Crossover -
this allows the user to adjust the crossover frequency from 40Hz to 175Hz with a high or low pass configuration,
including adjustable crossover slope from 12db - 18db/Octave.
- Advanced PCB Design Technology -
a new FLOOD technique in circuit board design allows us to truly "flood" the circuit board with copper for
substantially higher current capability, lower distortion and increased reliability.
- Thermal Reliefs -
New "star pattern thermal reliefs" improve solder connections and increase reliability.
- Individual Gain Controls For Left/Right Channels -
for better tracking and to make it easier to center up the soundstage (a critical element in the
competition circuit).
- 4-Position Speaker Level Connector -
for easier installation of high level output head units (inputs are ground isolated).
- Reverse Outputs -
when the user selects the highpass setting on the crossover, a complimentary lowpass signal is passed through the
RCA outputs, and vice-versa. Crossover frequency of the RCA outputs is determined by the frequency setting on
the crossover. This makes it much easier to design multi-amplifier systems.
Specifications
RMS Power measured at 12.5 Volts DC:
25 watts x 2 into a 4 ohm load with less than 0.05% THD+N
50 watts x 2 into a 2 ohm load with less than 0.1% THD+N
100 watts bridged into a 4 ohm load with less than 0.1% THD+N
Dynamic Power (IHF-202 standard) measured at 14.4 Volts DC:
65 watts x 2 into a 4 ohm load
125 watts x 2 into a 2 ohm load
250 watts bridged into a 4 ohm load
Signal to Noise Ratio
> or = 110dB A-Weighted
Damping Factor:
>200
Maximum Input
8 Vrms
Frequency Response
20Hz-20kHz ±0.25dB
Bass EQ
(0-18dB) centered at 45Hz
Crossover
Variable 40Hz to 175Hz
12-18dB/Octave
HP or LP configurable
Dimensions
7" x 9" x 2" (17.8cm x 22.8cm x 5cm)
8-1/4 Wide Including IsoFeet (20.9cm)
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