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JL Audio MHD600/4 settings

Old 07-10-2012, 05:08 PM
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Default JL Audio MHD600/4 settings

I am reasonably capable and have read the manual several times. I THINK I know what to do, but really don't want to screw up a $600 amp. I have a Fusion IP600 running 4 JL MX770s currently. I ordered the MHD600/4 from BOE and got it two days later(Jim is the MAN). I went and got some 8 AWG solid copper power wires. I will pick up the 50 amp fuse. I am going to have to install it on the side of the CC (vertical). Should I build spacers so it sits an inch off of the mounting surface? Should it be settings side up or wire connections side up? Once installed what settings are you guys using. I know it goes on "2 chan" since the IP600 only has 1 pair of RCA outs. I think it goes on "high voltage". I'm thinking since I bought very popular products, somebody has "been there, done that" and can share their settings so I don't blow this puppy up. Thanks in advance for any help.
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Old 07-10-2012, 07:06 PM
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Wires down. Spacer if u want not necessary. 4 guage wire not 8. 14 to ur speakers. Low input. High pass. Download the test tones and set the gains based on that.
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Old 07-11-2012, 06:23 AM
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Also - stranded wire - not solid. Bradv has it pretty much right. I have the 50 hz and 1khz test tone if you need them. There should be a chart near the end of the instructions for the amp that tells you the AC voltage to look for when dialing in the amp (based on impedence of your speakers). I will say this - I dialed in by the book. 4th of July we were out with some friends (who is a high end stereo guy) and he said - you're clipping a little and still not getting all you can out of the system. So he made just a couple of tweaks - both to the input voltage and the frequencies. The system was awesome before he adjusted and now - it is just fuller and more balanced. So use the book to get in the ballpark and then tweak from there. For the most part the amp will protect itself.
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Old 07-11-2012, 06:53 AM
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Brad and Mack, thanks so much for the help. Where do I get these "test tones"? My email is tobiaspardue@hotmil.com if they can be emailed. Once I get it installed, I will probably be asking for more help. I can't wait to hear the difference. I will say that I'm amazed at how good it sounds with no amp. I can't imagine how it could sound much better. I may have to switch the MX770s out for M770s though, since 150 watts RMS is a little more than the JL website says should run to the MX series. Thoughts on this???
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Old 07-11-2012, 07:00 AM
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Originally Posted by MackSea70 View Post
Also - stranded wire - not solid. Bradv has it pretty much right. I have the 50 hz and 1khz test tone if you need them. There should be a chart near the end of the instructions for the amp that tells you the AC voltage to look for when dialing in the amp (based on impedence of your speakers). I will say this - I dialed in by the book. 4th of July we were out with some friends (who is a high end stereo guy) and he said - you're clipping a little and still not getting all you can out of the system. So he made just a couple of tweaks - both to the input voltage and the frequencies. The system was awesome before he adjusted and now - it is just fuller and more balanced. So use the book to get in the ballpark and then tweak from there. For the most part the amp will protect itself.
I agree for sure but I would say to leave space for air to get rid of the heat. Mine will run for like 3 hours and shut off and i was hot down in that lower cabin while beached and swimming so now I open the door every so often. So think about the heat and enjoy
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Old 07-11-2012, 09:22 AM
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70 watt rms on the mx is for tones. They're rated up to 150 or more so music tones won't hurt the coils if played loud.
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Old 07-11-2012, 12:41 PM
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Originally Posted by tokinred View Post
Brad and Mack, thanks so much for the help. Where do I get these "test tones"? My email is tobiaspardue@hotmil.com if they can be emailed. Once I get it installed, I will probably be asking for more help. I can't wait to hear the difference. I will say that I'm amazed at how good it sounds with no amp. I can't imagine how it could sound much better. I may have to switch the MX770s out for M770s though, since 150 watts RMS is a little more than the JL website says should run to the MX series. Thoughts on this???
Email on the way. 150rms seems like too much for the MX. Just be gentle with the volume knob.
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Old 07-11-2012, 06:36 PM
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Originally Posted by MackSea70 View Post
Email on the way. 150rms seems like too much for the MX. Just be gentle with the volume knob.
Thanks
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Old 07-16-2012, 09:30 AM
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BTW - your email address kicked back - not sure if your box is full or cannot accept large attachments (the files are each 1.5mb). Let me know if you have a different addy you want me to send to.
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