hi im new here, saw some info and thought you guys might be able to help.
well i have 4 6x8 infinity kappa speakers two
KAPPA680.7CS
and two
KAPPA680.7CS
well i have gone through about 5-6 different amps, and im just about to get rid of these speakers.
my problem is i had interference turns out it was the stereo so problem fixed. then the real problem the amps can handle it anymore they shut off after about an hour or so.
as of now im running a hifonic zxi6406 but it turns off so im thinking the speakers might be set to 4ohm? i dunno too much about that so i was wondering if u guys could help.
also if it is the amp what would u guys say to me running an
Alpine pdx4.150?
Replies (7)
trunkisloud on 09/17/2007 22:16:57
here are the specs on this amp
4/3/2 channel operation
RMS Ratings:
85 watts RMS x 4 chan. @ 4 Ohms
170 watts RMS x 4 chan. @ 2 Ohms
340 watts x 2 chan. @ 4 Ohms
Bridgeable A/B Class Amplifier Topography
Ultra-Fi MOSFET Outputs
DC, Short, Thermal Overload Protection
Illuminated Hifonics Logo
PWM MOSFET EXVP (Exponential Vari-Power Supply)
SPC Twin Turbo-Torroids with Simpatico Coil Design
Fully Adjustable Accu Cross
Crossover Includes:
12 dB Hi-Pass Crossover
24 dB Low-Pass Crossover
Bass Boost:
18 dB Variable Bass Equalization
Remote Bass Control Included
RCA Line Outputs:
Permit Amplifier Daisy-Chaining
4 Gauge Power Connectors
Dimensions: 14.96"L x 10.39"W x 2.5"H
these speakers show to handle 90wrms ...270 max power..... they are 2ohm speakers...your amp should be able to handle these at 170rmsx4 @ 2ohms....a lot of power goin to these ..but you might wanna check the wiring to make sure its right....if resistance is incorrect your amp could be going into protect mode....how do you have them wired now?
swez on 09/17/2007 23:46:09
These are generally excellent Component speakers and sound very good in most systems. I believe these are the 2 ohm version of this line and are rated at 90 watts RMS/speaker. A fine Comp speaker system here in every way!
The issue mentioned has more to do with how the amp gains are setup with these speakers. (2 ohm speakers draw more power and the amp heats up faster and will shut down to cool) In this case, it sounds like the amp gains are set improperly and need to be tweaked a bit.
This kit takes a bit more care and experience to set up. In this scenario, if your gains are set at say 2.0 volts now, adjust the gain to more like 2.5-3.0 volts. That should take care of the problem with the amp shutting down. (Yes, it may sound a bit quieter, but this is the proper way to handle such matters)
Tech Tip: Setting the amp gains correctly will solve this problem. the best way to do this precisely, is to use a a Digital Multimeter, (DMM), a test tone signal and ganged power resistors that provide a 2 ohm net load for this process. Here's a vidio of how it it best done:
http://www.icixsound.com/iv/view_video.php?viewkey=929b125f8597834fa83a
Also, set the HPF, (High Pass filters) on this amp to about 60 Hz. This is a good setting point w/o subs. When using full range components, the correct setup steps are as followed:
1. Use "Pink Noise" as the signal of choice (OdB test tone)
2. No bass boost is used on the amp settings
3. Target AC voltage to shoot for is 13.5 VAC per channel w/ a 2 ohm load
4. As the amp load, we use a 2 ohm "dummy load" resistor system
4a. "Component speakers" are harder to setup initially because of the complex crossover designs. We need the "dummy load" for initial gain settings or the voltage readings will be incorrect.
5. Set the amp HPF's to 60 Hz.
If we go much lower or use too much bass boost, these speakers will draw/waste power via heat and cause an amp to go into thermal protect and shut down. (Just as noted, the amp is doing its job)
FYI: HiFonics amps tend to run a bit on the warmer side and depending on the mounting location, it may need some help with airflow to keep it cooler. (Move to a new location or add a cooling fan or two)
Finally, it takes a very robust amp to handle 2 ohm loads. Careful setup procedures are manditory or a fried amp is almost guaranteed. At the moment, it's likely you are actually "misusing/abusing" the amp as it is now setup. The thermal protection circuits are there to protect the amp from excess heat and doing the job very well. Adjusting amp gains and the HPF's correctly, should clear up this problem.
Got all that?
Swez
PS Welcome to CK!!!
hexstylee on 09/18/2007 01:05:49
thanks, ill tweak it as much as my knowledge lets me without messing too much with it.
one again thanks
awesome responces and time good forum!
jamesp on 09/18/2007 10:35:36
According to your original post all 4 speakers are KAPPA 680.7CS
If you actually have 2 different types, what are the other pair?
I have a set of the 680.7CS 2 Ohm comps in the front of my truck that I am feeding about 100 watts to from an RF 450.4 amp and other the the tweets being a bit bright the 6x8 hit the mids very hard and sound very good for moseratly priced speakers. Overall, I like them a lot.
I wonder if you have the wiring at the crossovers screwed up in someway...more than likely the problems you are having with your amp shutting down are wiring related.
hexstylee on 09/18/2007 13:56:38
well we took it to a shop to get wired, it was fine then it started doing that, i think u might be right about the crossover now that i remember it burned up the original tweeters
swez on 09/18/2007 16:31:03
If you pull off the cover to the crossovers, take a good wiff around the components and determine if you smell/see anything that was cooked by too much heat. (The Capacitors may look deformed/oily or a charred resistor is a sign of internal damage)
These can be repaired by a good tech or sent back to Infinity for repairs and restore to like new conditions.
Swez
cplkittle on 09/27/2007 23:09:49
Just a hunch..
what size power and ground wire are you using?
Are the lights dimming at all?
How long is the ground wire on the amplifier?
well i have 4 6x8 infinity kappa speakers two
KAPPA680.7CS
and two
KAPPA680.7CS
well i have gone through about 5-6 different amps, and im just about to get rid of these speakers.
my problem is i had interference turns out it was the stereo so problem fixed. then the real problem the amps can handle it anymore they shut off after about an hour or so.
as of now im running a hifonic zxi6406 but it turns off so im thinking the speakers might be set to 4ohm? i dunno too much about that so i was wondering if u guys could help.
also if it is the amp what would u guys say to me running an
Alpine pdx4.150?
Replies (7)
trunkisloud on 09/17/2007 22:16:57
here are the specs on this amp
4/3/2 channel operation
RMS Ratings:
85 watts RMS x 4 chan. @ 4 Ohms
170 watts RMS x 4 chan. @ 2 Ohms
340 watts x 2 chan. @ 4 Ohms
Bridgeable A/B Class Amplifier Topography
Ultra-Fi MOSFET Outputs
DC, Short, Thermal Overload Protection
Illuminated Hifonics Logo
PWM MOSFET EXVP (Exponential Vari-Power Supply)
SPC Twin Turbo-Torroids with Simpatico Coil Design
Fully Adjustable Accu Cross
Crossover Includes:
12 dB Hi-Pass Crossover
24 dB Low-Pass Crossover
Bass Boost:
18 dB Variable Bass Equalization
Remote Bass Control Included
RCA Line Outputs:
Permit Amplifier Daisy-Chaining
4 Gauge Power Connectors
Dimensions: 14.96"L x 10.39"W x 2.5"H
these speakers show to handle 90wrms ...270 max power..... they are 2ohm speakers...your amp should be able to handle these at 170rmsx4 @ 2ohms....a lot of power goin to these ..but you might wanna check the wiring to make sure its right....if resistance is incorrect your amp could be going into protect mode....how do you have them wired now?
swez on 09/17/2007 23:46:09
These are generally excellent Component speakers and sound very good in most systems. I believe these are the 2 ohm version of this line and are rated at 90 watts RMS/speaker. A fine Comp speaker system here in every way!
The issue mentioned has more to do with how the amp gains are setup with these speakers. (2 ohm speakers draw more power and the amp heats up faster and will shut down to cool) In this case, it sounds like the amp gains are set improperly and need to be tweaked a bit.
This kit takes a bit more care and experience to set up. In this scenario, if your gains are set at say 2.0 volts now, adjust the gain to more like 2.5-3.0 volts. That should take care of the problem with the amp shutting down. (Yes, it may sound a bit quieter, but this is the proper way to handle such matters)
Tech Tip: Setting the amp gains correctly will solve this problem. the best way to do this precisely, is to use a a Digital Multimeter, (DMM), a test tone signal and ganged power resistors that provide a 2 ohm net load for this process. Here's a vidio of how it it best done:
http://www.icixsound.com/iv/view_video.php?viewkey=929b125f8597834fa83a
Also, set the HPF, (High Pass filters) on this amp to about 60 Hz. This is a good setting point w/o subs. When using full range components, the correct setup steps are as followed:
1. Use "Pink Noise" as the signal of choice (OdB test tone)
2. No bass boost is used on the amp settings
3. Target AC voltage to shoot for is 13.5 VAC per channel w/ a 2 ohm load
4. As the amp load, we use a 2 ohm "dummy load" resistor system
4a. "Component speakers" are harder to setup initially because of the complex crossover designs. We need the "dummy load" for initial gain settings or the voltage readings will be incorrect.
5. Set the amp HPF's to 60 Hz.
If we go much lower or use too much bass boost, these speakers will draw/waste power via heat and cause an amp to go into thermal protect and shut down. (Just as noted, the amp is doing its job)
FYI: HiFonics amps tend to run a bit on the warmer side and depending on the mounting location, it may need some help with airflow to keep it cooler. (Move to a new location or add a cooling fan or two)
Finally, it takes a very robust amp to handle 2 ohm loads. Careful setup procedures are manditory or a fried amp is almost guaranteed. At the moment, it's likely you are actually "misusing/abusing" the amp as it is now setup. The thermal protection circuits are there to protect the amp from excess heat and doing the job very well. Adjusting amp gains and the HPF's correctly, should clear up this problem.
Got all that?
Swez
PS Welcome to CK!!!
hexstylee on 09/18/2007 01:05:49
thanks, ill tweak it as much as my knowledge lets me without messing too much with it.
one again thanks
awesome responces and time good forum!
jamesp on 09/18/2007 10:35:36
According to your original post all 4 speakers are KAPPA 680.7CS
If you actually have 2 different types, what are the other pair?
I have a set of the 680.7CS 2 Ohm comps in the front of my truck that I am feeding about 100 watts to from an RF 450.4 amp and other the the tweets being a bit bright the 6x8 hit the mids very hard and sound very good for moseratly priced speakers. Overall, I like them a lot.
I wonder if you have the wiring at the crossovers screwed up in someway...more than likely the problems you are having with your amp shutting down are wiring related.
hexstylee on 09/18/2007 13:56:38
well we took it to a shop to get wired, it was fine then it started doing that, i think u might be right about the crossover now that i remember it burned up the original tweeters
swez on 09/18/2007 16:31:03
If you pull off the cover to the crossovers, take a good wiff around the components and determine if you smell/see anything that was cooked by too much heat. (The Capacitors may look deformed/oily or a charred resistor is a sign of internal damage)
These can be repaired by a good tech or sent back to Infinity for repairs and restore to like new conditions.
Swez
cplkittle on 09/27/2007 23:09:49
Just a hunch..
what size power and ground wire are you using?
Are the lights dimming at all?
How long is the ground wire on the amplifier?
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