Alpine KTP-445A 45W x 4 RMS @4Ohm/2Ohm Class D 4-Channel Compact Amplifier
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• Head Unit Power Pack (15A fuse installed)
• 39" Amp-to-receiver harness (male 16-pin connector on each end)
• 31" Amp-to-vehicle harness (male 16-pin connector on one end and a female 16-pin connector on other end)
• (2) Brackets
• (4) Screws
• (4) Wire-ties
• Installation Diagram
• Online Product Registration
• Limited Warranty Information
Compact size lets the KTP-445A fit where most amplifiers won’t. The KTP-445A comes equipped with direct plug-in connectors for select 2005 and newer Alpine head units and it fits behind the dash of most vehicles. It's small and compact at only 7-7/16” x 1-1/2” x 2-1/2”. Its size and flexible wires make the Power Pack an easy choice to save space.
BEST SIGNAL-TO-NOISE CONTENDER IN ITS CLASS
In order to ensure that Alpine sound quality is heard, we’ve created a platform that offers an unbelievably low noise floor, taking extra care to ensure a clean signal path, with no extraneous interference. The end result: The Power Pack boasts 1 Watt Signal-to-Noise Ratio of 82dB or better.
TOTAL HARMONIC DISTORTION (THD+N) VS. FREQUENCY
Uniquely, the Power Pack distortion actually decreases at higher frequencies, resulting in a clean and clear signal where your ear is most sensitive to distortion.
Number of Channels : 4
Frequency Response : 20-20000 Hz
RMS Power Range : 4x45 Watts
Amplifier Class : D
Fuse Rating : 15x1 A
XP750-SE OFFER : Yes
compact Class D amplifier for Alpine in-dash receivers
45 watts RMS x 4 at 2 to 4 ohms (CEA-2006 compliant)
dimensions: 7-7/8"W x 1-1/2"H x 2-9/16"D
RMS Power Output (Watts x Channels): 45 x 4
Peak Power Output (Watts x Channels): 90 x 4
Power at 2 Ohms (Watts x Channels): N/A
Bridged Power (Watts x Channels): N/A
Minimum Impedance Bridged: N/A
Minimum Impedance Unbridged: 2
Minimum Impedance: 2
Best Frequency Response: 20-20k Hz
THD at Rated RMS Power: 1%
Signal to Noise Ratio: 84 dB
Input Voltage: 14.4v
Amplifier Class: D
Low-Pass Crossover Frequency: N/A
Low-Pass Slope (dB/octave): N/A
High-Pass Crossover Frequency: N/A
High-Pass Slope (dB/octave): N/A
Bass Boost: No
Bass Boost Frequency: N/A
Fan Cooled: No
Fuse Rating: 15
Speaker Level Inputs: Yes
Preamp Outputs: No
Width (inches): 7-7/8
Height (inches): 1-1/2
Depth (inches): 2-9/16
Parts Warranty: 1 Year
Labor Warranty: 1 Year
Authorized Internet Dealer
Warranty: 1 Year Manufacturer warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for repair within 1 year from the original date of purchase with proper return authorization.
A nice little amp add on,I like the small compact size and its simple wiring directions. Adds just enough power for my truck that only has 2 door speakers for now. In the future I will add a small sub and another amp for better sound. Overall a great buy.
I have a Alpine CDA-9886 Which by itself is an awesome head unit. I wanted a little more power that the 18 watts R.M.S. that unit supples. The Alpine KTP-445 is a great unit it adds more dimension to the sound stage in the car. The mid and high volume levels are a lot louder. Great improvement. I am running 2 Alpine Type S 6 X 9's, 2 Alpine Type R 6.5 door speakers Two 3.5 Infinity Kappas in the dash. 2 Hifonics Brutis series 12" subs. Their is only one thing I do not like about it. Their is a pop sound when you turn the stereo on. It's very slight like the way the old school amps were when you them on. Great amp for the money. Lots and lots of wire. this thing is 1-1/2 X 7-1/4 X 2-3/4. I have a '05 dodge Neon and it was hard to find a spot to put it. Overall 4-1/2 stars out of 5. It would have got a 5 Star rating if it did not 'pop' when you turn it on.
I was a little afraid of buying this at first, but im gld that i did! This thing is amazing. I put it in with my stock front speakers in and they were freaking out. My rear 6x9s loved it though. I was able to turn up the volume 5 more notches. I forgot that i unplugged my subs and it still bangs. Im so glad that i bought this. A little hard to find room though!
I bought the Alpine KTP-445 to match with the Alpine CDE-HD137BT and a pair of Rockford-Fosgate Prime R1693 6x9's for the rear and a pair of Rockford-Fosgate Prime R164 6 1/2" for the front. The speaker installation was fairly simple, requiring minor modifications. The Head-Unit and KTP-445 was a piece of cake to install. As soon as I turned it on, I fell in love with the great sound. Even using Rockford-Fosgates lower end speakers, the Bass, Mids and Treble was superb. For the little amount I have invested, this system sounds much better than the High-End $1500 system with huge Amp and Sub I have installed in my truck.
The KTP-445 is made for newer Alpine head units, is way easy to find a home to hide it in and there are no huge power cables to install. Simply plug it in to the head unit, then plug in your existing car wiring harness and you're good to go. The 40 watt RMS it puts out drives my speakers like there is no tomorrow. I am extremely happy with the performance. I think the creation of the mini-Amp will undoubtedly be the demise of the huge power robbing amps of yesterday. This KTP-445 is the beginning of the new future for automotive amps. Technology has finally happened upon the automotive world. If a new sound system is in your future, check this Alpine Amp out. You will not be disappointed at all. My new system in my car proves you don't have to spend hundreds, if not thousands of dollars to create that system everyone will be envious over. Alpine also make this amp for systems other than Alpine, the KTP-445U (for Universal).
I used this porduct in conjunction with an Alpine head unit, 2 6.5" and 2 6x9" Morel speakers and a low profile 10" amplified subwoofer in my 2007 Chevy 2500hd Classic. The speakers sound great! A little head scratching was involved as to where to mount this thing. But with some velcro i was able to install it behind my lower steering column trim to the right side of the column. Harness length was ample, and it really is plug and play with an Alpine head unit. I highly recommend this product to give your speakers a little extra mustard when used with an Alpine deck!
Blown away with what Alpine has done. Installed in my new Kubota sounds awesome!
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