Rockford Fosgate pbr300x2 gain? - Victory Forums - Victory Motorcycle Forum
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post #1 of 24 (permalink) Old 08-19-2015, 09:52 PM Thread Starter
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Default Rockford Fosgate pbr300x2 gain?

I took the plunge and ordered the WD amp kit and alpine speakers (I know..paid more but to me worth it for ease of install). I installed as directed, grounded to battery, and sounded great. Rode for about an hour and started clipping, then went out all together.

Amp was really hot (I know it runs hot anyways), so I called WD and sent new amp...same issue as it clipped immediately after install. After observation left speaker was blown.

My question is...WD specifically states to not mess with the settings (or will void warranty with them), and the gain is set at 6. RF's procedure is to adjust slowly up while having stereo set 3/4, then back down.

Is 6 too high for this amp and alpine speakers? I do not want to blow more speakers, and I do not want to void warrany with WD. I did turn off my auto volume prior to riding as well. I appreciate any input/advice.

2011 Cory Ness Cross Country
PCV, Lloyd's cams, timing gear, intake, rpw exhaust
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post #2 of 24 (permalink) Old 08-19-2015, 10:05 PM
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I have never ran the amp gain higher than 3 on mine. More gain is going to cause more distortion



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post #3 of 24 (permalink) Old 08-20-2015, 12:18 AM
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Mine is in the 3-4 range and wasn't cutting out on a 108 degree day here in AZ.

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post #4 of 24 (permalink) Old 08-20-2015, 01:04 AM
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mine is set between 3 and 4. Sound quality degrades after 4. Call Jon back and get another amp. Turn the gain down, if it blows turn it back up and call them again.

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~PCV, Timing Wheel +6, Thrush Mod Exhaust, Madstad 11" windshield
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post #5 of 24 (permalink) Old 08-20-2015, 01:32 AM
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Also verify your wiring. I always use a bit of dielectric grease on every connection.
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2014 XC Boss Blue/Gloss Black
Tri-Ovals
Lloydz ATS +4
Lloydz Air Filter
1/4 turn throttle
PCV
PBR300x2+Alpine SPS-510
Goody Lowers
Klock Works windscreen

2006 Suzuki GSXR 600
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post #6 of 24 (permalink) Old 08-20-2015, 04:34 AM Thread Starter
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Thanks guys, I have double checked my wiring and all is good. New amp is running fine, it sounds like I need to set the gain back. Weird how WD sends it this way and specifically says to not change it. I will contact them, but I really appreciate all the feedback.

2011 Cory Ness Cross Country
PCV, Lloyd's cams, timing gear, intake, rpw exhaust
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post #7 of 24 (permalink) Old 08-20-2015, 09:15 AM
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When I got mine from WD the gain was also at 6, and I fried speakers. Set it to 3, and have polk 6.5s, have used it for about 5000 miles or so (in very hot weather) and have had zero issues. From what I read, 6 is wicked high.

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post #8 of 24 (permalink) Old 08-20-2015, 10:17 AM
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Make sure the cross over switch is set to HP not AP. I blew 2 speakers and it always sounded distorted with certain songs on AP. On HP it sounds great with gain on 5. AP just lets too much strong bass through for some speakers

99 Kawasaki Vulcan 800 (sold)
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post #9 of 24 (permalink) Old 08-21-2015, 06:40 AM Thread Starter
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Quote:
Originally Posted by jchris56 View Post
Make sure the cross over switch is set to HP not AP. I blew 2 speakers and it always sounded distorted with certain songs on AP. On HP it sounds great with gain on 5. AP just lets too much strong bass through for some speakers
I am pleased so far with the AP setting as the bass is good/not overpowering with the Alpines. If I fry any more speakers, going all in with the 6.5 Hertz.
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post #10 of 24 (permalink) Old 08-21-2015, 08:18 PM Thread Starter
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Little update, had a small trip of a few hundred miles and gain set at 4, I couldn't really hear the music going 50 to 60 mph...volume control pushed up to 15 to 18 and actually wasn't that loud. I got home, checked all the connections and all good. I went ahead and turned up the gain again because there isn't any other choice to get decent sound.

Standing still with no bike running, gain at 3 or 4 sounds pretty good, but on the road wasn't that loud. At 6 (I know, it's high)...actually sounded good again.

On a side note, I had the auto volume control off, but when I turned it to low, the sound was louder at speed (medium and high sounded even better, but I didn't want to fry another speaker). Kind of disappointed for now as I was expecting more out of this system. Next project will be hertz speakers and possibly a different amp

2011 Cory Ness Cross Country
PCV, Lloyd's cams, timing gear, intake, rpw exhaust
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