ok i got a rockford punch 2002 and to bazooka 10' subs... 4 ohms each svc and do believe they are EL series. i have two questions for you guys since you seem like you really know your stuff.
1. I can hear the CD, and when i change songs it plays through the subs... its kind of hard to explain but if volume is at 0 and i hit skip to next song i can hear it change now i dont understand why?
2. im running these 2 subs off one channel at a 2 ohm load it seem to hit alot harder then each sub having its own channel... might there be any reason for this?
Replies (8)
Grdevs24zero on 07/8/2006 01:13:27
You mean you can hear the highs playing in the sub? Did you set the crossovers correctly? Or do you mean a "pop" type of sound coming through?
The reason the subs seem to hit harder bridged is because they are getting more juice. I am assuming you have them wired in series or parralel, focusing the two channels into one.
Maybe the wiser members of the board can elaborate more on this, I am still learning myself.
ttocs on 07/8/2006 08:19:06
some electrical systems are a little noisier then other and sometimes it is the equipment. How high is yer gain set? Do you have the rca's bunched up around any part of the vehicle?
I have a similar problem right now in my mustang caused by cheap equipment but it is only a problem now and again so I live with it...
brockstarr03 on 07/8/2006 20:45:50
well no it isnt bridged.... i am only using half of the AMP one channel at 2 ohms... i got two subs wired to one channel in series i do believe. they are 4 ohms each but am running them together to make a 2 ohm load for the amp ....the RCA's are a little longer then they need to be. the HU is a kenwood MP3 deck... no popping or highs i knnow all about the crossovers got the one on the deck at 60 and the amp at 55 hz but when i go to skip songs it makes noise... when i put the cd in the HU i can hear it start to spin through the subs. its hard to explain maybe a bad set of RCA's or ground loop... i am lost on this
swez on 07/9/2006 06:47:48
Try grounding the HU to a new location. A bare metal connection from the HU harness ground to fire wall or floor pan should correct this if it's a ground loop problem.
If your subs are wired for a net 2 ohm load, the subs are wired in parallel. If in series, they would be 8 ohm to the amp.
Swez
ttocs on 07/9/2006 06:58:26
it does not make any sence to me that you have two speakers bridged to one channel of the amp. It would be safer for the amp and may solve your noise problems to put each on one channel.
swez on 07/9/2006 07:43:59
Actually, this amp is rated at 50 RMS x 2 at 4 ohms per channel and 100 RMS @ 2 ohms per channel.
If you bridged the amp to mono mode and wired the subs in series, (8 ohms) you'd get 50 per sub.
If you run 1 sub per channel, the amp is more balanced on power to each channel and same results. (50 x 2)
It would be better to use this amp to power full range front speakers.
(2 ohm Comp or Coaxials) Then, use a Class D amp to power your subs.
What model # Bazooka's do you have here?
Swez
PS Up early today there ttocs? Or stayed up very late... either way, good morning to ya!
brockstarr03 on 07/9/2006 17:41:55
el1004 bazooka's I know the amp is not really for subs but short on cash right now. the amp pounds the car hard tho everything shakes so i feel it is good enough. with 2 4Ohm subs i can only get 50 per sub. i now have it hooked each channel per sub. it just doesnt hit as hard as a 2 Ohm load one channel shared between 2 subs .
swez on 07/9/2006 18:30:28
Check your polarity on the wiring this way. If one sub is out of phase, (one sub in reverse polarity, to the other) tow subs will sound weak and thinner than just 1 sub connected.
Also, change the LPF settings on your HU to 75-80 Hz. (Instead of 55-60) And set the amp LPF either for full range or LPF set at ~80 Hz. This should add some punch and more bass as well.
Finally, try adjusting the amp gain a tad. If the amp gain is set at say 4.0 volts now, try 2.5 - 3.0 volts and see if that improves. If you hear excess bass distortion when you dial up the HU, adjust amp gain upward until it's nice, clean bass again.
Swez
1. I can hear the CD, and when i change songs it plays through the subs... its kind of hard to explain but if volume is at 0 and i hit skip to next song i can hear it change now i dont understand why?
2. im running these 2 subs off one channel at a 2 ohm load it seem to hit alot harder then each sub having its own channel... might there be any reason for this?
Replies (8)
Grdevs24zero on 07/8/2006 01:13:27
You mean you can hear the highs playing in the sub? Did you set the crossovers correctly? Or do you mean a "pop" type of sound coming through?
The reason the subs seem to hit harder bridged is because they are getting more juice. I am assuming you have them wired in series or parralel, focusing the two channels into one.
Maybe the wiser members of the board can elaborate more on this, I am still learning myself.
ttocs on 07/8/2006 08:19:06
some electrical systems are a little noisier then other and sometimes it is the equipment. How high is yer gain set? Do you have the rca's bunched up around any part of the vehicle?
I have a similar problem right now in my mustang caused by cheap equipment but it is only a problem now and again so I live with it...
brockstarr03 on 07/8/2006 20:45:50
well no it isnt bridged.... i am only using half of the AMP one channel at 2 ohms... i got two subs wired to one channel in series i do believe. they are 4 ohms each but am running them together to make a 2 ohm load for the amp ....the RCA's are a little longer then they need to be. the HU is a kenwood MP3 deck... no popping or highs i knnow all about the crossovers got the one on the deck at 60 and the amp at 55 hz but when i go to skip songs it makes noise... when i put the cd in the HU i can hear it start to spin through the subs. its hard to explain maybe a bad set of RCA's or ground loop... i am lost on this
swez on 07/9/2006 06:47:48
Try grounding the HU to a new location. A bare metal connection from the HU harness ground to fire wall or floor pan should correct this if it's a ground loop problem.
If your subs are wired for a net 2 ohm load, the subs are wired in parallel. If in series, they would be 8 ohm to the amp.
Swez
ttocs on 07/9/2006 06:58:26
it does not make any sence to me that you have two speakers bridged to one channel of the amp. It would be safer for the amp and may solve your noise problems to put each on one channel.
swez on 07/9/2006 07:43:59
Actually, this amp is rated at 50 RMS x 2 at 4 ohms per channel and 100 RMS @ 2 ohms per channel.
If you bridged the amp to mono mode and wired the subs in series, (8 ohms) you'd get 50 per sub.
If you run 1 sub per channel, the amp is more balanced on power to each channel and same results. (50 x 2)
It would be better to use this amp to power full range front speakers.
(2 ohm Comp or Coaxials) Then, use a Class D amp to power your subs.
What model # Bazooka's do you have here?
Swez
PS Up early today there ttocs? Or stayed up very late... either way, good morning to ya!
brockstarr03 on 07/9/2006 17:41:55
el1004 bazooka's I know the amp is not really for subs but short on cash right now. the amp pounds the car hard tho everything shakes so i feel it is good enough. with 2 4Ohm subs i can only get 50 per sub. i now have it hooked each channel per sub. it just doesnt hit as hard as a 2 Ohm load one channel shared between 2 subs .
swez on 07/9/2006 18:30:28
Check your polarity on the wiring this way. If one sub is out of phase, (one sub in reverse polarity, to the other) tow subs will sound weak and thinner than just 1 sub connected.
Also, change the LPF settings on your HU to 75-80 Hz. (Instead of 55-60) And set the amp LPF either for full range or LPF set at ~80 Hz. This should add some punch and more bass as well.
Finally, try adjusting the amp gain a tad. If the amp gain is set at say 4.0 volts now, try 2.5 - 3.0 volts and see if that improves. If you hear excess bass distortion when you dial up the HU, adjust amp gain upward until it's nice, clean bass again.
Swez
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