Reddit Reddit reviews Rockford Fosgate R400-4D Prime 400 Watt Full Range Class-D 4-Channel Amplifier

We found 12 Reddit comments about Rockford Fosgate R400-4D Prime 400 Watt Full Range Class-D 4-Channel Amplifier. Here are the top ones, ranked by their Reddit score.

Car Audio & Video
Electronics
Car Audio Amplifiers
Car Electronics
Car Multichannel Amplifiers
Car & Vehicle Electronics
Rockford Fosgate R400-4D Prime 400 Watt Full Range Class-D 4-Channel Amplifier
The PRIME R400-4D is an ultra-efficient 4-channel amplifier (1.97" x 6.77" x 9.10”) with top mounted controls and delivering 400 Watts RMS of power!Optimized for 4-channel front/rear systems (RMS Power Output: 75 Watts x 4 @ 4-Ohm OR 100 Watts x 4 @ 2-Ohm OR 200 Watts x 2 @ 4-Ohm Bridged)High efficiency, Class D design produces maximum power with minimal strain on the vehicle's electrical system while being able to power a full-range systemDelivering more bass and treble where you want it most with On-board Punch EQ for +18dB boost @ 45Hz. Operating Voltage - 9-16 VDCFeaturing RCA pass-thru outputs, 12dB/octave Butterworth crossover, 2/4 channel input switch, 4 Gauge power/ground connectors, and Tri-stage protection covering thermal, over-current and short circuits.Input sensitivity:150 mV to 4 VFamous Rockford Fosgate build quality with a full 1-year warranty when purchased from an authorized Rockford Fosgate reseller
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12 Reddit comments about Rockford Fosgate R400-4D Prime 400 Watt Full Range Class-D 4-Channel Amplifier:

u/Bjandthekatz · 3 pointsr/CarAV

I have this one, and its $150 - highly recommend it. They always underrate them, so it's kind of luck of the draw but mine is rated for a little over 500 watts.

Other users can successfully pull over 100 watts at 4ohm.

u/adam4826 · 3 pointsr/CarAV

It would be difficult to find a proper headunit with a cassette, but i can give you a few items to go by.

Headunit - DEH-150mp

(dash kit, wiring harness and antenna adapter of course)

keeping budget in mind, and that that car has 4 4x8 sized speakers, i would get two sets of these adaptors to allow for 5.25 speakers.
I personally use 2 sets of Polk db522
and for the money they sound decent.

You could leave it like that and it would be enjoyable or you can go the extra step and get something like a RF4 channel amp, with amp install kit and be right around your 500 mark.

Keep in mind that i am far from an expert. Just wanted to give you a direction.


u/smoke_bleezy-4sheezy · 2 pointsr/CarAV

I just picked up the rockford r400.4d a couple of weeks ago. So far it's been awesome! And since the place I got it from was a certified retailer they price matched the Amazon price for me.

u/K9b1ack · 2 pointsr/CarAV

I own a 2015 Challenger.. and I run a JL W6v3. Sounds amazing.

As far as speakers go I plan on changing out the door/dash with component Polk and the rear with composites, so I agree with you on the brand choice there as well. You won't need to worry about finding/building/commissioning the right enclosure if you go with something like this. To answer your question about the amp, you will absolutely need one for a sub. A decent 4 channel amp could provide not only your sub (bridged @ 150W) power but can also handle your two new door speakers as well. The door speakers could run just on your headunit but will be lacking the power they could have with an aftermarket amp.

u/ChumleyEX · 2 pointsr/CarAV

I imagine that you just need an amp like this. The specs are pretty darn nice for its size imo. Then you find some speakers with the same RMS rating.
https://www.amazon.com/Rockford-Fosgate-R400-4D-Full-Range-4-Channel/dp/B004T0WFVE

u/agentbob123 · 1 pointr/CarAV

Okay, I may go with putting it under the seat. What about this Rockford Fosgate?

>Also, do you know whether RF considers Amazon an authorized dealer, in the event a warranty claim comes up?

I found out that if sold directly by Amazon, Rockford will support warranty claims.

u/YoloSwagglns · 1 pointr/CarAV

What's the RMS power of the JL sub? I would recommend this for the speakers and this for the sub. Rockford tends to underrate their amps so you would be getting quite a bit more power than what they're rated at and you can't beat it for the money.

u/SMG_MP7A1 · 1 pointr/CarAV

Not super cheap but the Rockford Fosgate 400 4D is a 400 watt 4 channel that runs my JBL 6x9s. About $140 to $160.

Here's an Amazon link for $142:
https://www.amazon.com/dp/B004T0WFVE/ref=cm_sw_r_cp_apa_Q8uUzbQ3Q9ENF

u/DoZeYLoVe · 1 pointr/CarAV

I decided to go with your recommendation from amazon. Will get it by Friday and will use that until my repair comes back. Thanks for all your help!!!

u/foogama · 1 pointr/CarAV

That PM100X1 was exactly the type of product I had in mind, thank you, but you're right, pricing makes it not worth it.

I had no idea LOC were a thing until you mentioned the concept, but yeah, it looks like that's the way to go.

So if I'm understanding what you're suggesting correctly, a setup may looking something like this...

  1. Splice the +/- pairs of wires for all 4 channels coming out of the head unit and connect it into a 4 channel LOC (like this one)

  2. Run all 4 channels over to a 4x100 amp using flex wire for easy wiring.

  3. Re-splice in the factory wiring into the appropriate channels on the amp.

  4. Done?