Speaker? for aftermarket fairing
Road Warrior
Joined: Mar 2009
Posts: 1,518
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From: Port Neches Texas
I have Hertz 6x9s in my fairing, and polk 6x9s in the bag lids, I have had 3 seperate amps in my fairing, arc 1.25 mini, RF PBR 300, and now the JL MHD 600x4. The worst was the RF. I am not sure about the reckless fairing as I have a Dragonfly, if you have the room you may wish to consider a larger amp. Most recommendations/comments are coming from those with factory fairings, not a lot of room left so much more limited in their choices. There's a lot of good info here, UltraNutz won't steer you wrong.
Here's a comparison of the RF PBR and the JL.
Here's a comparison of the RF PBR and the JL.
Last edited by ericl; Mar 27, 2013 at 09:35 PM.
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From: minnesota
I have Hertz 6x9s in my fairing, and polk 6x9s in the bag lids, I have had 3 seperate amps in my fairing, arc 1.25 mini, RF PBR 300, and now the JL MHD 600x4. The worst was the RF. I am not sure about the reckless fairing as I have a Dragonfly, if you have the room you may wish to consider a larger amp. Most recommendations/comments are coming from those with factory fairings, not a lot of room left so much more limited in their choices. There's a lot of good info here, UltraNutz won't steer you wrong.
Here's a comparison of the RF PBR and the JL.
Here's a comparison of the RF PBR and the JL.
Road Warrior
Joined: Mar 2009
Posts: 1,518
Likes: 59
From: Port Neches Texas
Wow! Thats a huge difference. When you say "worst" are you talking power or quality. I see those Hertz speakers are rated for 200W,I believe the polk's I'm getting are 125W. The stereo I'm getting is 50w X4 and the amp is rated for 75x4,so that equals 125w per channel peak correct? Either way the amp should be here today so i'm going to give it a whirl ,if it sucks or takes a crap I'll have to upgrade. Thanks for the pic!
The Hertz are 135 continous, never noticed the 200 watt indicated before. Regarding your output, you will not be using the amplified signal from the head unit, you connect your amp via preamp outputs. Get a multimeter that measures ac volts, determine what the amp voltage needs to be, measure the voltage and adjust using a 1 kHz test tone http://www.hark.com/clips/zqgtsvcvtc...conds-0db-loop
And the head unit set at 70% volume and other settings flat.
So if you have 125 watt RMS speakers at 4ohms multiply wattage x resistance and determine the square root of that number
125x4= 500 sq,rt is 22.3 volts. Remove the speaker wires from the Amps outputs and hook your multimeter to the + and -, adjust the gain while playing the test tone to the 22.3 volts. Your set, basically max power from amp without distorting or damaging your speakers
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From: minnesota
Tdd77
The Hertz are 135 continous, never noticed the 200 watt indicated before. Regarding your output, you will not be using the amplified signal from the head unit, you connect your amp via preamp outputs. Get a multimeter that measures ac volts, determine what the amp voltage needs to be, measure the voltage and adjust using a 1 kHz test tone http://www.hark.com/clips/zqgtsvcvtc...conds-0db-loop
And the head unit set at 70% volume and other settings flat.
So if you have 125 watt RMS speakers at 4ohms multiply wattage x resistance and determine the square root of that number
125x4= 500 sq,rt is 22.3 volts. Remove the speaker wires from the Amps outputs and hook your multimeter to the + and -, adjust the gain while playing the test tone to the 22.3 volts. Your set, basically max power from amp without distorting or damaging your speakers
The Hertz are 135 continous, never noticed the 200 watt indicated before. Regarding your output, you will not be using the amplified signal from the head unit, you connect your amp via preamp outputs. Get a multimeter that measures ac volts, determine what the amp voltage needs to be, measure the voltage and adjust using a 1 kHz test tone http://www.hark.com/clips/zqgtsvcvtc...conds-0db-loop
And the head unit set at 70% volume and other settings flat.
So if you have 125 watt RMS speakers at 4ohms multiply wattage x resistance and determine the square root of that number
125x4= 500 sq,rt is 22.3 volts. Remove the speaker wires from the Amps outputs and hook your multimeter to the + and -, adjust the gain while playing the test tone to the 22.3 volts. Your set, basically max power from amp without distorting or damaging your speakers
Last edited by tdd77; Mar 29, 2013 at 11:03 PM.
Extreme HDF Member
Joined: Nov 2007
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From: East of the Sun, West of the Moon
I actually just ordered 6x9 polk speakers $82,Rockford Fosgate pbr300x4 amp$137 and an Infinity bluetooth stereo $167 from amazon.com.I have seen a lot of people on here are very happy with the RF amp and it is very compact,you may want to look into it also. Thanks for the reply!
If you do a little research you'll find a TON of problems with that PBR300x4 amp pertaining to heat and just a lack of performance.
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you would have been a lot better off with the SS PN4.520D amp. Lots more power, stable at 2 ohms, and will allow the use of Polk MM691 speakers. Great speakers, great amp.
If you do a little research you'll find a TON of problems with that PBR300x4 amp pertaining to heat and just a lack of performance.
If you do a little research you'll find a TON of problems with that PBR300x4 amp pertaining to heat and just a lack of performance.
Being that you are the audio guru on here I am taking your advise and will be returning it and will go with the sound stream,if it runs as cool as you say and puts out 260wx2 bridged at 4 ohms and costs maybe $10 more,thats just a no brainer! Thanks again.
Extreme HDF Member
Joined: Nov 2007
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From: East of the Sun, West of the Moon
Hey Thanks for setting me straight UltraNutz. The more I dug into this the more I found people really are not that happy with it and I hope I didnt lead anybody the wrong way. That being said I'm sure there are guys that are plenty happy with the RF amp. I have no experience with it,guess I just heard the brand name and thought it's got to be good.
Being that you are the audio guru on here I am taking your advise and will be returning it and will go with the sound stream,if it runs as cool as you say and puts out 260wx2 bridged at 4 ohms and costs maybe $10 more,thats just a no brainer! Thanks again.
Being that you are the audio guru on here I am taking your advise and will be returning it and will go with the sound stream,if it runs as cool as you say and puts out 260wx2 bridged at 4 ohms and costs maybe $10 more,thats just a no brainer! Thanks again.
Just want to point out as some have experienced and some have not. The Class D amps radiate EMI which interferes with FM reception to some extent. If you're rural and like to listen to FM then you might not want this SS amp. Again it's a hit and miss kinda thing. Doesn't affect quite a few that have installed it but there are a handful that is has affected.
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From: minnesota
Good to know,I do live in the city and I like my FM stations but I do also plan on streaming music from my phone or iPod. A lot of my riding is out of town and we are planning on moving about 30 mi out. Was reading through threads in the audio forum and was wondering if you have heard of anyone trying one of those amplified antennas yet and if it solved the interference problem? Do you think the Polk 6x9 will be under powered with the pbr300x2? Sorry for so many questions. P.S. Didn't mean it in the wrong way but reading through the threads that you've posted in you do set a lot of people straight in a good way LOL!
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Joe Kucinski
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Joined: Nov 2007
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From: East of the Sun, West of the Moon
yes one of the members here having the FM issue just last week tried the amplified antenna with no better results. I still can't help but think there are other issues with this because there are a ton of folks installing this amp yet only a handful having the FM issues.
No sir I think the PBR300x2 is a good match for the Polk 6x9s.
No sir I think the PBR300x2 is a good match for the Polk 6x9s.
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