having had both amps PBR300x4 then PBR300x2, db 651 slim and regular
they are impressive for the money spent, but the PBR300x2 is more practical
in it's usage, look at the variable crossovers and ability to run a remote EQ
PBR300x2 is more advanced, software rewrite fixed 30+ bugs from the previous version PBR300x4
the db is a gold/silver coned version of the black coned DXi, purchased at BestBuy, db is a value line, slimline and regular basket backspace sizes are the same, but the db tweeters swivel and the slimline ones do not, both are fairly durable, but the on board crossovers are a bit weak, ran mine with better crossovers for a few day and they sounded like better speakers and hit pretty hard, but I was running them as 2ohms with another set
having said all that, if you are looking to only replace stock location stuff and get the best "bang for your buck" and keep it simple, go MM or 2ohm, check out Infinity Kappa 63.9i, 95db sensitvity, 225w max
you'll really need all you can get, from the stereo to hear it
2ohm is about 2 louder, or an honest 8db greater
also the line out from your radio should be converted with a OEM converter
that was one of the 30+ fixes, but redundancy can improve stability
these boosted rail amps convert input voltage to 30v, makes it easier if the input signal is clean.
but good luck in which ever direction you go
2010 FLTRX- r o a d g l i d e
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