Help Needed Bad (SPG555 Burning Coils & Unwanted Noise)

[sml238 10+ year member]

Ok so here's my problem. My sub has a faint sound. It kind of sounds like an airplane. And when I turn my lights on it hits a little bit. It also seems a bit distorted even when at very low levels.

I just got some level 3 stinger rca's so I know it's not my rca's and I just checked, sanded, and put a new screw in my ground so my ground should be fine. I can't figure it out for the life of me.

Now for the burning coils...my sub is burning coils like crazy and I'm only hitting it with about 1k watts. sometimes I crank it to about 1200 watts which is 48.99 volts on my dmm. I've seen people give the SPG555 1400 watts daily. My alt is pretty bad and I have a little voltage drop but I didn't think that would cause my coils to burn up. I've replaced 2 of them already.

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[00poop6x 10+ year member]

Ok so here's my problem. My sub has a faint sound. It kind of sounds like an airplane. And when I turn my lights on it hits a little bit. It also seems a bit distorted even when at very low levels.
I just got some level 3 stinger rca's so I know it's not my rca's and I just checked, sanded, and put a new screw in my ground so my ground should be fine. I can't figure it out for the life of me.

Now for the burning coils...my sub is burning coils like crazy and I'm only hitting it with about 1k watts. sometimes I crank it to about 1200 watts which is 48.99 volts on my dmm. I've seen people give the SPG555 1400 watts daily. My alt is pretty bad and I have a little voltage drop but I didn't think that would cause my coils to burn up. I've replaced 2 of them already.

Shielded RCA's are probably what's causing any idle noise. Get your old RCA's and try those, you don't have to run them through the car, just plug it up from the outside.

Make sure your speaker wire coming from the sub to the terminal and from the terminal to the amplifier is solid, no loose connections, please.

Your setup is definitely messed up, I remember your posts from a while ago and you keep burning coils...still. I'm running unclipped 1,200 RMS into the SPG in a sealed box fine.

List the details of your installation and your equipment [brand and model#], box size, volume, port length, displacement, etc. Install related unless you are playing sine waves every now and then.//content.invisioncic.com/y282845/emoticons/furious.gif.fc81ca146dbff91fede3ed290dbc4f4c.gif Your port tune and box volume may have a factor in this situation.

If you can, switch out with another amplifier with similar power...your amplifier outputs may be giving out DC at certain volumes. 50V DC is nooooooooooo.

A culprit to some burnt coils one after another I have seen in the past 15 years is the fact that somewhere along the line of the wire from the sub amp to the woofer is a weak link, small gauge wire, or loose connection. If the coil didn't end up burning, the speaker wire would melt, or the terminal would melt.

 

[sml238 10+ year member]

Shielded RCA's are probably what's causing any idle noise. Get your old RCA's and try those, you don't have to run them through the car, just plug it up from the outside.
Make sure your speaker wire coming from the sub to the terminal and from the terminal to the amplifier is solid, no loose connections, please.

Your setup is definitely messed up, I remember your posts from a while ago and you keep burning coils...still. I'm running unclipped 1,200 RMS into the SPG in a sealed box fine.

List the details of your installation and your equipment [brand and model#], box size, volume, port length, displacement, etc. Install related unless you are playing sine waves every now and then.//content.invisioncic.com/y282845/emoticons/furious.gif.fc81ca146dbff91fede3ed290dbc4f4c.gif Your port tune and box volume may have a factor in this situation.

If you can, switch out with another amplifier with similar power...your amplifier outputs may be giving out DC at certain volumes. 50V DC is nooooooooooo.

A culprit to some burnt coils one after another I have seen in the past 15 years is the fact that somewhere along the line of the wire from the sub amp to the woofer is a weak link, small gauge wire, or loose connection. If the coil didn't end up burning, the speaker wire would melt, or the terminal would melt.

My setup

- Pioneer Premier 500ub HU

- Kicker ZX.1500 Amp

- Stinger 4 gauge wires

- Stinger level 3 rca's

- SPG555 in ported Gtuned box

And the noise is when I turn my lights on and it when theres no music playing my sub sounds almost like putting ur ear up to a sea shell but a little more high pitch and electrical sounding lol...and it never made this sound before. I'm so sick and tired of this never ending problem I really can;t get to the bottom of it.

And my box is the Boston Gtuned box made for the SPG555 so I know the box is fine. I don't have another amp of similar power but James aka I Love Bass sold it to me and he said it worked great.

I do have shielded rca's but they made the noise with my old rca's as well.

My speaker wire connection is solid as well as the grounds. Although I did see a little melted area on the power wire. But could that have been from when i accidentally touched it to metal?

 

[00poop6x 10+ year member]

My setup- Pioneer Premier 500ub HU

- Kicker ZX.1500 Amp

- Stinger 4 gauge wires

- Stinger level 3 rca's

- SPG555 in ported Gtuned box

And the noise is when I turn my lights on and it when theres no music playing my sub sounds almost like putting ur ear up to a sea shell but a little more high pitch and electrical sounding lol...and it never made this sound before. I'm so sick and tired of this never ending problem I really can;t get to the bottom of it.

And my box is the Boston Gtuned box made for the SPG555 so I know the box is fine. I don't have another amp of similar power but James aka I Love Bass sold it to me and he said it worked great.

I do have shielded rca's but they made the noise with my old rca's as well.

My speaker wire connection is solid as well as the grounds. Although I did see a little melted area on the power wire. But could that have been from when i accidentally touched it to metal?

No bass boost, LPF set around 65Hz. You're more than likely sending in excess of 1,300RMS easily into that thing even set at 48.99V. Music will vary from that 48.99. Always set it with a DMM and then by ear afterwards. Set the gain lower with a lower LPF and listen to the woofer to see if it's mechanically straining.

As far as the noise, that's going to require some troubleshooting. Noise when your lights are on may just be a coincidence. Try a set of RCA's ran across the interior of the vehicle right back into your HU. See if that helps.

 

[sml238 10+ year member]

No bass boost, LPF set around 65Hz. You're more than likely sending in excess of 1,300RMS easily into that thing even set at 48.99V. Music will vary from that 48.99. Always set it with a DMM and then by ear afterwards. Set the gain lower with a lower LPF and listen to the woofer to see if it's mechanically straining.
As far as the noise, that's going to require some troubleshooting. Noise when your lights are on may just be a coincidence. Try a set of RCA's ran across the interior of the vehicle right back into your HU. See if that helps.

i have my lpf set at 80hz but ill turn it down to 65hz. should i set the lpf on my deck or the amp? the woofer doesn't appear to be straining at all. even mike the owner of safe and sound audio where i got the woofer checked it out and set it by ear and said it was fine...all good clean power.

the noise doesn't bug me much as it is a little better with these new rca's even though they are shielded. im just afraid to put my new coil in and burn that one up.

oh and that reminds me. i have a half burnt coil in the sub right now. could that be making noises? and could it be bad for the sub? it's not broken its just blackened.

 

[boomzilla 10+ year member]

More than likely it's your headunit. I bet if you switch it out the sea shell noise will go away. Mine does the same and I hate my pioneer h/u just for this reason.

 

[sml238 10+ year member]

More than likely it's your headunit. I bet if you switch it out the sea shell noise will go away. Mine does the same and I hate my pioneer h/u just for this reason.

ya ur probly right. i just hooked my amp up to a dmm and its weird.

i used a 50hz tone and i got the dmm to read from 48-51 volts with the gain turned up about 1/4 of the way and my HU turned to 55/62

the thing is when i played a normal song it only read about 12 volts. so its like certain songs only hit 12v but others hit over 50v so idk what to do.

 

[sml238 10+ year member]

anyone have an explanation for my above post ^

 

[sml238 10+ year member]

anyone?