- Weight: 6.8 pounds
Kenwood Kac-8405 720-Watt 4/3/2-Channel Amplifier with Variable LPF/HPF
- Compact 4/3/2-Channel Car Audio Amplifier
- 720W Max Power
- Cea Rated: 50W (1.0% Thd+N) @ 4_/4 Ch
- Cea Rated: 75W (1.0% Thd+N) @ 2_/4 Ch
- High-Quality Speaker Level Input & Blue Illumination
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Top Customer Reviews
The amp was easy to install (I mounted the amp to a 3/8" plywood panel the exact size of the amp feet and then used industrial strength velcro (3 strips) to secure it to the floor under the passenger seat). It fits in perfectly with the terminal connectors facing the middle of the car). I used the speaker level inputs with butt crimp connectors. I did not need to use the amp on wire as it detects input on the speaker level inputs to turn the amp on and off.
There are fans on the amp and they are audible only when the engine is off and the radio is on a volume level < 5. In normal situations the fans are not audible. Only when the radio volume is super low and the car is not moving do you hear it. I'm sure if it became a problem I could put something behind the fans to mute the fan noise, but it is not a concern as you do not hear the fans at all while driving.
So the summary - Great amp. Great sound. Runs cool due to the fans. Works great with OEM factory radio. I'm very pleased with the purchase of this amp.
Instructions and set up was a breeze. I used a 4 awg wiring kit, needed to grind a little off of the sides of the amp wiring kit terminals to get it to fit into the amps screw, no big deal.
At really low volume you can hear the cooling fans running, barely. The cross over filters are nice but could use better markings to accurately set them. You have to "guess" where 100 is, due to the size of the slot for the screw driver. I error on the high side and used the receivers cross over feature to complete the set up.
I started with the gain's set to 4 to match the receivers input, broke in the new speakers and then starting increasing it "1" unit at a time. Currently the gain is set to 1, with the receiver volume set to three quarters the sound is c-l-e-a-n but the loudness will cause you to turn it down.
If you're looking to put together a 2.1 system in your vehicle or need 4 channel or high powered 2 channel bridged amp in a small package i would highly recommend this one.
LOL, I couldn't turn it up more than half way before the speakers would clip, so at that level the bass doesn't exist. I was getting a headache.
Enter the Kenwood 8405 amp for $120. That price is so low that I thought it must be junk, but the positive reviews were a good sign. When installing I ran into a problem and Kenwood's online support was timely and courteous. It turns out that I wasn't making good contact on one wire... my fault. The amp works... the fans make a certain amount of noise, but hey, it's going to live in the trunk, so what?
So the time came and I turned up the volume, listening to the same whiney speakers that were clipping and giving me a headache... Holy God! This thing makes the speakers sound great! That is: by the specs, the head unit and speakers should have sounded good but they sounded awful. I added this inexpensive amp and the system now hits hard with great sound.
In my particular set up, I have the two front channels connected to a set of 6 1/2" component speakers and the rear channels bridged to one 4ohm JL Audio 8W1V2 subwoofer. There are your basic controls that one would expect from most amps. Adjustable High and low pass crossovers for the front and rear channels. There is also a defeatable 18db bass boost switch for the rear channels if you are driving subwoofers, much like in my specific application. One other thing I like a lot about the amp is that there are dual cooling fans when the amp heats up.
Overall, AMAZING is all I can say. The sound quality is there and the bass hits harder compared to the Sound Ordnance amp. I've been doing novice car audio installs for about 10 years now and this amp is up there is sound quality; please believe me in telling you this. You will not be disappointed if you're looking for something with great sound quality, but are not looking to notify the block when you are around with crazy SPL levels of music.
Most Recent Customer Reviews
This amp is great !!
I had it hooked to 4 kenwood 1695ps 6.5 and they are the perfect match ..also got the kenwood 3013ps 12" sub hooked to a kenwood 8104 class d... Read more
This Amp Really Brought My Speakers to Live!
I have A JVC headuntil Giving Signal to the 4 channel Amp power Infinity reference front door speakers and tweeter and... Read more
It's okay for the money. I have 4 alpine 60 watt's rms components. This amp barley pushes them. It sounds decant. Still lacking. Kenwood is a good product. Read morePublished 11 months ago by Roberto Romero Jr
I use this in a 60QT Coleman cooler as a cooler radio while camping and floating. The cooler is completely enclosed so the amp still gets pretty hot but with the built-in fan so... Read morePublished 12 months ago by Fitz-Hume