RF PBR300 data sheet comparison FAQ - Road Glide Forums
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post #1 of 30 (permalink) Old 01-01-2013, 05:04 PM Thread Starter
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RF PBR300 data sheet comparison FAQ

this is a shortcut sheet I drew up to address FAQ's about the boosted rail amps

basically it's my logic behind getting two, if you need two

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post #2 of 30 (permalink) Old 01-01-2013, 05:11 PM
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If you run the four channel up front for the four front speakers. How would you hook up the two channel amp to the same system to power the speaker lids?

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post #3 of 30 (permalink) Old 01-01-2013, 05:32 PM Thread Starter
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I'd recommend one 2 channel amp per set of RCA's or fade positions
FRONT and REAR

so, 2 amps, one up front and one for the rear

Then make the speakers used match in impedance, to the benefit of
amps total output power.

Be is 2, 4, or 8 speakers per channel, the amp doesn't know the difference, the
amp just reads the ohm resistance and reacts accordingly

on the PBR300x2, the 2ohm mode draws the most usable current so a 2ohm load is the most efficient,
be it 2 pairs of 4ohm speakers (best) or a single set of 2ohms, or 4 pairs of 2ohms,
but that's all one channel so placement should be similar

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post #4 of 30 (permalink) Old 01-01-2013, 05:37 PM Thread Starter
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Quote:
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If you run the four channel up front for the four front speakers. How would you hook up the two channel amp to the same system to power the speaker lids?
you would take the REAR outs to a second amp or run them directly off the radio

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post #5 of 30 (permalink) Old 01-01-2013, 05:46 PM
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Ok you lost me sort of. I already have the 4 channel amp set up in the front. I need more power too power up 6x9's in the lids? How does one tie those two amps together? Should I run the front fade to 4 channel amp for the front speakers and the rear fade to the 2 channel amp to power the speaker lids? ?

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post #6 of 30 (permalink) Old 01-01-2013, 05:52 PM Thread Starter
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Quote:
Originally Posted by reficul View Post
Ok you lost me sort of. I already have the 4 channel amp set up in the front. I need more power too power up 6x9's in the lids? How does one tie those two amps together? Should I run the front fade to 4 channel amp for the front speakers and the rear fade to the 2 channel amp to power the speaker lids? ?
exactly, two separate channels

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post #7 of 30 (permalink) Old 01-01-2013, 05:53 PM
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Gotcha! Thank you

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post #8 of 30 (permalink) Old 01-01-2013, 06:15 PM Thread Starter
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the biggest road glide challenge was SPACE

anything over 1.5 thick has a tough time fitting, eliminated a bunch of amps
up to about 1.8" in between the glove box space, only so much on top of the
radio, etc....

so the PBR was a little no brainer for that reason, maybe the crossovers
won't become an issue, for me to compete with wind and muffler, I
wanted it loud, louder, more louder, etc....

if you do happen to get stuck doing something basic out of need the
principals of good execution can help you out

these are the two improvement areas for 2012



it already 2013, so expect this thread to have a quick expiration date

the rockford is not really all that bad an amp,
but certainly limited in output with the lack of a transformer

that's why I say mathematically plan and do the best you can and then add
another.

these also run hot, having them in a place with a little moving air helps

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post #9 of 30 (permalink) Old 01-01-2013, 06:16 PM Thread Starter
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here's a picture that shows the relation of power between the two

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post #10 of 30 (permalink) Old 01-01-2013, 09:37 PM
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I appreciate this dude. for some reason, the whole ohms watts, etc etc confuses the mess out of me. you think I could e-mail you or PM you a question about my setup?
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