Audio enhancement perma-grin style
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  1. #1
    Senior Member F6Pilot's Avatar
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    Thanks Robert, it has been a fun and educational process. As stated, the discovery and mechanical part was the easy part and now I get to figure out that amp. The initial settings found in various forums gave me a safe initial startup but it quite frankly sounds like crap. Don't have an oscilloscope so I'm going to keep reading......

  2. #2
    Senior Member Papa Tater's Avatar
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    Any Updates this week?
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  3. #3
    Senior Member CoCoKola's Avatar
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    Quote Originally Posted by F6Pilot View Post
    Thanks Robert, it has been a fun and educational process. As stated, the discovery and mechanical part was the easy part and now I get to figure out that amp. The initial settings found in various forums gave me a safe initial startup but it quite frankly sounds like crap. Don't have an oscilloscope so I'm going to keep reading......
    "Sounds like crap." give me a call to discuss, way to vague to be able to help.

    -Robert

  4. #4
    Senior Member F6Pilot's Avatar
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    Well, I got everything buttoned back up and the bike put back together so I could take a ride today. As for sounding like crap, the lows sounded very muffled. I realize these little 5.25" speakers won't push a lot but they just sounded muted and tinny. I read every bike audio post I could find (there's a lot of good info in the HD Forums ) and found where many had removed foam baffles, polyfill, etc. I had installed Boom Mats and they really created a snug fit so I decided to pull it back apart and remove them to see if there was any difference. The difference was immediately recognizable with a much fuller and deeper sound. Im not saying it sounded like I had just installed a sub, but the bass was there and the sound was much more clear. At this point I was happy they finally sounded better than the JBL coaxials I had just removed.

    While doing research this past week, I located a reputable audio shop that is actually the local dealer for Hertz, Audison, and Arc Audio. While out riding today I visited and spoke with the owner about amp settings. He advised they could assist in dialing it in and use an oscilloscope to ensure they get the most out of the components. I have elected to take the bike to them Monday morning and let them get this project across the line. I can then make note of their settings for future reference.

    Robert, I sincerely appreciate your guidance throughout this process as well as your continued willingness to assist. To be honest, I have partial hearing loss in one ear and a severe case of tinnitus so I probably can't even tell what good would even sound like. Too many years banging on drums and listening to loud music.

  5. #5
    Senior Member Jimmytee's Avatar
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    Quote Originally Posted by F6Pilot View Post
    Well, I got everything buttoned back up and the bike put back together so I could take a ride today. As for sounding like crap, the lows sounded very muffled. I realize these little 5.25" speakers won't push a lot but they just sounded muted and tinny. I read every bike audio post I could find (there's a lot of good info in the HD Forums ) and found where many had removed foam baffles, polyfill, etc. I had installed Boom Mats and they really created a snug fit so I decided to pull it back apart and remove them to see if there was any difference. The difference was immediately recognizable with a much fuller and deeper sound. Im not saying it sounded like I had just installed a sub, but the bass was there and the sound was much more clear. At this point I was happy they finally sounded better than the JBL coaxials I had just removed.

    While doing research this past week, I located a reputable audio shop that is actually the local dealer for Hertz, Audison, and Arc Audio. While out riding today I visited and spoke with the owner about amp settings. He advised they could assist in dialing it in and use an oscilloscope to ensure they get the most out of the components. I have elected to take the bike to them Monday morning and let them get this project across the line. I can then make note of their settings for future reference.

    Robert, I sincerely appreciate your guidance throughout this process as well as your continued willingness to assist. To be honest, I have partial hearing loss in one ear and a severe case of tinnitus so I probably can't even tell what good would even sound like. Too many years banging on drums and listening to loud music.
    I wonder when I read about some filling and even lining or sealing up the enclosures that the speakers fit it. If anyone notices, realizing that the enclosures were designed for the OEM speakers, that the enclosures are ported. I don't know how much actual science is in to the design of these enclosures. Conventional enclosure design wisdom would tell you that the ABS plastic is not a very good material for enclosures and that any efforts to decrease resonance in this material could not be bad. However, I have also read about some sealing off these enclosures, and to me at least, it would seem to really limit the sound from any speakers. A truly sealed enclosure would surely need to be larger. JMTCW
    "Go sell crazy somewhere else, we're all stocked up"

  6. #6
    Senior Member F6Pilot's Avatar
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    The speakers were very very snug inside the liner and my understanding, from a complete non-audiophile noob here, is that they just needed more room to breathe. In retrospect, it is a ported enclosure even if small and to me it made sense to allow the speaker to use all of the available space. Maybe it just needed a little more room to produce some lower end resonance and thats what Im hearing. LOL

    Thank you Jimmy

  7. #7
    Senior Member CoCoKola's Avatar
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    There are dozen things that could affect the quality. Polarity, rca cable type, etc. I can't detail everything here, it's too involved which is why I offered to review with you. The setup you used one of the top installers in the nation did a couple years ago.

    most likely and like I said before, you probably need a line driver (disused on this thread. ) The line level output is below normal specs. Along these lines:

    https://www.google.com/search?q=line...ine+driver+rca

    This is why I have been so adamant about needing a dsp or an amp that can.

  8. #8
    Senior Member F6Pilot's Avatar
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    Robert, I completely agree, way too many variables including my old ears. I know the chosen components are top shelf, at least for my needs, and will serve me well once everything gets checked and dialed in. Looking forward to Monday....

  9. #9
    Senior Member F6Pilot's Avatar
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    I delivered my bike to the audio technician today and picked it up a few hours later. He advised he had everything dialed in and had to install an RCA filter to remove some ignition noise. We went outside, put the key in and WOW! The sound has truly come to life and absolutely rocks. While the bass does not "boom", I never imagined being able to get sounds in the lower register out of 5.25" speakers. I could actually feel notes hitting my chest when we cranked it up. This guy did a remarkable job getting the system dialed in and squeezing everything he could out of these components. I do not believe I could have achieved the same results due to my lack of knowledge in this area. The only remaining item is to relocate the filter to a more suitable position as I do not like the location they chose.

    Now, I remain thankful for the direction and recommendations of both Robert and Jimmy. There is a multitude of information and components readily available for the HD crowd including both custom and plug and play wiring and various peripherals. That makes the installation experience similar to a Crutchfield order complete with pictures. However, these two guys are trailblazers and are to be commended for their research and efforts. Thank you gentlemen.

    I am extremely pleased with the final result and recommend the same for anyone looking to enhance their audio experience.

  10. #10
    Senior Member 53driver's Avatar
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    Quote Originally Posted by Jimmytee View Post
    I have been pretty happy with the output of the MVX amp. It pumps out a healthy amount of juice and has been doing so for over 2 years now. It's been powering the Polks which are 2.7 nominal impedance and the JL Audio Sub. Just was trying to remember what Robert was pushing the Hertz with. Contemplating making a change to the Hertz , but they are 4 ohm. Believe I should be just fine though. Contemplated running the NVX bridged to the Hertz and a different amp for the sub, but that would probably not be needed.

    For some reason I was thinking that someone had been able to fit the 6.5 Hertz speakers in. I have the Polk 6.5" component speakers but the magnets on the woofers have Neodymium magnets so there is more room for them.
    Quote Originally Posted by Jimmytee View Post
    Thanks, I know which amp he is using , but that amp can be used in different configurations. I was trying to remember what configuration. I am pretty sure he was running the woofers and tweeters separately. I am toying with changing speakers to the Hertz. The Audison does look impressive. Don't think I'm there yet. If I was using the stock head unit, it might be different.
    Quote Originally Posted by Jimmytee View Post
    No I asked how much RMS wattage he was running to the speakers...
    Lol. What, What, and How Much.
    You're killing me!
    You win!

    Cheers,
    Steve

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