Is something wrong here???

[Beatin' 10+ year member]

Did you use a 0db tone? That's why. Bass in music is usually recorded 4-8x lower in amplitude.

 

[pacmannbass]

If you used a 0db tone it makes.perfect sense you need a -3 to-8 db tone depending on your music. Most music never comes close to 0db if you set your gains with a 0db tone just set you sub output to -5 to -8 so when you play music you set it to 0db. You might also want to check if the input you are using CD, mp3,aux has its own level adjustment compared to the radio.

By 0db tone you mean my sub level? And also how would i check the level adjustment like you stated? I used my ipod with a high quality 50hz track from the mtx site. My aux offset on the headunit to +8 also so the volume is the same as the radio. When I had my last system in on the same head unit I adjusted it the same way and the bass was there. Its a kenwood kdc138

 

[pacmannbass]

Did you use a 0db tone? That's why. Bass in music is usually recorded 4-8x lower in amplitude.

What do you guys mean by this 0db tone? My sub level??

 

[Beatin' 10+ year member]

What do you guys mean by this 0db tone? My sub level??

what is the 50hz tone amplitude? Is it 0db? -3db, -6db, -9db, etc?????

If you tune the amp to the HU using a bass tone that is 0db for 1000watts for example, and you play a song whos bass notes are recorded at -6db, then you're only going to get 250watts because -6db is 4x lower in amplitude compared to 0db.

 

[pacmannbass]

what is the 50hz tone amplitude? Is it 0db? -3db' date=' -6db, -9db, etc?????
If you tune the amp to the HU using a bass tone that is 0db for 1000watts for example, and you play a song whos bass notes are recorded at -6db, then you're only going to get 250watts because -6db is 4x lower in amplitude compared to 0db.[/quote']

Ohh ok. I dloaded it off the mtx website. I just dloaded a 0db 50hz tone off the ROE site, so ill readjust and let you guys know how that goes

 

[Beatin' 10+ year member]

Ohh ok. I dloaded it off the mtx website. How could I check to find out the tone? Or to make it simpler, do you have a link to a good 50hz tone you can send me to dload? Something at about 0db so i can adjust with my sub level at 0

I downloaded that 50hz tone and examined it in Audacity. It is recorded at -1db.

I would recommend you tune the amp with the same tone, but with your HU volume at a lower level, not at 3/4. Try 5 notches lower, or you may be able to turn up the sub level up higher but I'm not familiar with your HU's attenuation rate.

 

[pacmannbass]

I downloaded that 50hz tone and examined it in Audacity. It is recorded at -1db.
I would recommend you tune the amp with the same tone' date=' but with your HU volume at a lower level, not at 3/4. Try 5 notches lower, or you may be able to turn up the sub level up higher but I'm not familiar with your HU's attenuation rate.[/quote']

HU goes to 35 but distorts at 27(3/4), but I mainly listen to it at 25 so thats where I tuned it at. So since you said 5 notches lower than 3/4, try it at 22 with 0 sub level?

 

[Beatin' 10+ year member]

HU goes to 35 but distorts at 27(3/4), but I mainly listen to it at 25 so thats where I tuned it at. So since you said 5 notches lower than 3/4, try it at 22 with 0 sub level?

maybe 20.......or even slightly lower......

 

[hispls 5,000+ posts]

This is ******* absurd. Just play some normal music and turn up the gain until it's balanced with the rest of the output. If you encounter distortion or mechanical issues turn the gain down.

These threads are full of the most ridiculous ideas.

 

[michaellane 5,000+ posts]

Really you guys? Some radios dont put out their full pre out voltage without the sub level being turned all the way up. Also with that sunwoofer your 90hz lpf is fine. Turn your sub level up and it is fixed. Next time just send me a message. Im not even reading the second page of post

 

[michaellane 5,000+ posts]

Ohh ok. I dloaded it off the mtx website. I just dloaded a 0db 50hz tone off the ROE site, so ill readjust and let you guys know how that goes

Read my other post right above this one. Next time you have a issue contact me instead of all this crap answers in this thread

 

[pacmannbass]

This is ******* absurd. Just play some normal music and turn up the gain until it's balanced with the rest of the output. If you encounter distortion or mechanical issues turn the gain down.
These threads are full of the most ridiculous ideas.

Haha. Thats how I usually do it, but I figured Id wanna try the DMM way with this new setup so I could be precise on my wattage output. I dont wanna blow my sub. I did try that way too and I could turn my sub all the way up with 0 distortion but no way thats safe with a 300rms sub on 600rms amp output

 

[Beatin' 10+ year member]

These threads are full of the most ridiculous ideas.

And yet my trunk keeps bangin'. Imagine that....

 

[yogegoy]

No idea what your talking about.

That pretty much sums it up, if you are able to access a DD1 or an Oscope whatever way possible you'd be done tuning and won't have 28 post for this topic is what I was simply implying. That's what the DD1 does, even your grandma can do your gain adjustment. I don't have any affiliation to any product but that's just my observation, I do own both a DD1 and a Fluke 105B and had to use them only 2 times compared when I used my Fluke DMM. I'm just suggesting the tools to help you out the quickest no matter what others maybe suggesting. The right tools that work are always the ones that gather dust in your toolbox or they wouldn't be in there although a DMM is tool well used only it's not the best tool for your situation.

Here check another way I do my gain adjustment, I listen to a buzzing noise when it clips. I'm not suggesting anything with this video because it just carries a lot of criticism. Just observe if your amp does the same thing mine does when it clips is all I'm saying.

http://s1115.photobucket.com/user/yogegoy/media/SettingAmpGain_zps3a264820.mp4.html

 

[hispls 5,000+ posts]

Haha. Thats how I usually do it, but I figured Id wanna try the DMM way with this new setup so I could be precise on my wattage output. I dont wanna blow my sub. I did try that way too and I could turn my sub all the way up with 0 distortion but no way thats safe with a 300rms sub on 600rms amp output

So what method did you use to test impedance of your sub system at every frequency within useable bandwidth?

 

---------- Post added at 07:00 PM ---------- Previous post was at 06:59 PM ----------

 

That pretty much sums it up, if you are able to access a DD1 or an Oscope whatever way possible you'd be done tuning and won't have 28 post for this topic is what I was simply implying. That's what the DD1 does, even your grandma can do your gain adjustment. I don't have any affiliation to any product but that's just my observation, I do own both a DD1 and a Fluke 105B and had to use them only 2 times compared when I used my Fluke DMM. I'm just suggesting the tools to help you out the quickest no matter what others maybe suggesting. The right tools that work are always the ones that gather dust in your toolbox or they wouldn't be in there although a DMM is tool well used only it's not the best tool for your situation.
Here check another way I do my gain adjustment, I listen to a buzzing noise when it clips. I'm not suggesting anything with this video because it just carries a lot of criticism. Just observe if your amp does the same thing mine does when it clips is all I'm saying.

http://s1115.photobucket.com/user/yogegoy/media/SettingAmpGain_zps3a264820.mp4.html

Because 300$ for a magical Steve Meade box is a really wise investment when a minute and a half with a working set of ears would do the job.