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Alpine - Power Pack 180W Class D Bridgeable Multichannel Amplifier with High-Pass Filter - Black
Shipping
Installation: Available at select stores
More installation info is available in checkout
Specifications
Key Specs
Continuous Watts x Channel @ Ohms45W x 4 x 2Maximum Watts x Channel @ Ohms45W x 4 x 4Amplifier ClassDNumber Of Channels4Bass BoostNoneBridgeabletrueLow-Pass CrossoverNoneHigh-Pass CrossoverVariableSpeaker-Level Inputstrue
Compatibility
Voice Assistant Built-inNo
General
Product NamePower Pack 180W Class D Bridgeable Multichannel Amplifier with High-Pass FilterBrandAlpineMounting Hardware IncludedtrueModel NumberKTP-445UColorBlack
Audio Power
Continuous Watts x Channel @ Ohms45W x 4 x 2Maximum Watts x Channel @ Ohms45W x 4 x 4Watts Per Channel Maximum45 wattsAmplifier ClassD
Audio
Number Of Channels4Minimum Frequency Response20 hertzMaximum Frequency Response20 kilohertzTotal Harmonic Distortion0.01 percentSignal-to-Noise Ratio (SNR)80 decibelsBass BoostNone
Features
BridgeabletrueLow-Pass CrossoverNoneHigh-Pass CrossoverVariableMOSFET Power SupplytrueBluetooth EnabledfalseRemote Control IncludedNoMarinefalseFan Cooledfalse
Input
Line-Level InputstrueSpeaker-Level Inputstrue
Output
Preamp Outputsfalse
Dimensions
Product Height1.5 inchesProduct Width2.63 inchesProduct Depth1.5 inchesProduct Weight3.3 pounds
Warranty
Warranty - Parts1 yearWarranty - Labor1 year
Other
UPC793276011916
Features
Give your car stereo system a power boost with this Alpine Power Pack KTP-445U 180W Class D bridgeable 4-channel amplifier that features a 12dB/Oct high-pass filter for powerful sound.
Geek Squad installation
is strongly recommended for this product. Please visit your local Best Buy store for details.
Handles up to 45W RMS (continuous) @ 4 ohms or 2 ohms
For powerful sound. Up to 90W continuous bridged.
12dB/Oct high-pass filter
Along with variable gain ensures flexible operation.
4 ohms bridged impedance
Conducts power evenly to keep the speaker at an appropriate level.
RCA and auto sensing speaker-level connectors
Enable simple installation.
What's Included
Alpine Power Pack 180W Class D Bridgeable Multichannel Amplifier with High-Pass Filter
Wiring harness with RCA connectors
Owner's manual
Questions & Answers (62)
Q: How much power can this amplifier handle? (1 answers)
A: This amplifier can handle up to 45W RMS (continuous) @ 4 ohms or 2 ohms. Up to 90W continuous bridged.Q: What is the bridged impedance of this Alpine amplifier? (1 answers)
A: The bridged impedance of this amplifier is 4 ohms.Q: What kind of speaker-level connectors does this amplifier have? (1 answers)
A: This amplifier has RCA and auto sensing speaker-level connectors for simple installation.Q: Does this amplifier have a high-pass filter? (1 answers)
A: Yes, this amplifier features a 12dB/Oct high-pass filter for powerful sound.Q: Is this amplifier compatible with Geek Squad® installation? (1 answers)
A: Yes, Geek Squad® installation is strongly recommended for this product.- A: This amp has real power I turned it down so as not to blow my kicker door speakers that can handle much more power.
- A: Many people focus too much attention on the rear speakers. Rear speakers are for "rear fill". If your front speakers are able to create a good front stage and proper imaging AND be able to play clearly at high volume levels to balance out the subs, rear speakers are usually not necessary. Take out the 6X9s that reside in your rear deck. If you feel the need to put rear speakers later on, go with something small like a 5.25 in a coax.
Q: Can this amp be mounted in the fairing on a Harley Davidson? (1 answers)
A: Yes it can. It is mounted in mine and it sounds great.
Compare similar products

Continuous Watts x Channel @ Ohms | 45W x 4 x 2 | 60W x4 @ 4 ohms | 50 Watts x 4 @ 4 Ohm; 45 Watts x 4 @ 2 Ohm; 100 Watts x 2 bridged @ 4 Ohm | 45 Watts x 4 @ 4 Ohm |
---|---|---|---|---|
Maximum Watts x Channel @ Ohms | 45W x 4 x 4 | 90 watts RMS x4 @ 2 ohms | 100 Watts x 4 | Data Not Available-- |
Amplifier Class | D | D | D | D |