I have recently installed a 900 wat Fli amp, 4 channel. i have my JBL 300w 6x9's on them and it was working fone, then i connected a 10" kenwood sub and bridged the connection for the sub and after 10 mins off playin the amp cuts out for 20seconds den comes back on, help needed?
Replies (7)
newB on 05/30/2008 17:21:18
what coils does the woofer and how do you have it wired??
sounds like your running it at to low of an ohm load and it went into protect.
-Drew
ttocs on 05/30/2008 17:46:51
its probably gettin real hot too right?
nick_welsman on 05/30/2008 22:39:30
i am not sure what coils the woofer is and it is bridged on channel 1+2.
and yes it does get hot! should i just turn down the gain's?
swez on 05/31/2008 00:53:51
Yes, dialing back on the amp gain settings should help keep the amp cooler. If you continue to run it hot, the amp is likely to fail and let out some "magic smoke". Once that leaves the amp, it very hard to get the smoke back in. SMILE (Basically, if the smoke gets out, the amp will become useless like burnt toast)
What is the model number of this sub you are now using?
Swez
nick_welsman on 05/31/2008 03:55:54
umm i cudnt tell u, its about 4 years old n my dad was using t before n its got a home made box so i wud have 2 take that apart 2 find out. ive been out in my car 1 day and had the seats at the back foward and its been k so far. ive heard about suing computer fans??
swez on 05/31/2008 06:23:40
OK, this sub is probably a single coil, 4 ohm sub. Kenwood did not make any dual coil subs 4 years ago and I don't know/believe they do now.
Knowing that much, dial back on your gain for the bridged channels a "fuzz" until the amp does not shut down. Also, if you are using much more than +6dB of bass boost, backing off on that will help too.
Fans can help cool the amp, but like all electronic devices, heat is the enemy. It's good that this amp has good protection circuits or it would be toast by now. In a nutshell, don't needlessly push your luck.
Swez
nick_welsman on 05/31/2008 09:08:08
yh thanks for the help, i dont use the bass boost as it sounds crap! its been k all day as ive had the seats forward n ill take care when powering it up! thanks again
Replies (7)
newB on 05/30/2008 17:21:18
what coils does the woofer and how do you have it wired??
sounds like your running it at to low of an ohm load and it went into protect.
-Drew
ttocs on 05/30/2008 17:46:51
its probably gettin real hot too right?
nick_welsman on 05/30/2008 22:39:30
i am not sure what coils the woofer is and it is bridged on channel 1+2.
and yes it does get hot! should i just turn down the gain's?
swez on 05/31/2008 00:53:51
Yes, dialing back on the amp gain settings should help keep the amp cooler. If you continue to run it hot, the amp is likely to fail and let out some "magic smoke". Once that leaves the amp, it very hard to get the smoke back in. SMILE (Basically, if the smoke gets out, the amp will become useless like burnt toast)
What is the model number of this sub you are now using?
Swez
nick_welsman on 05/31/2008 03:55:54
umm i cudnt tell u, its about 4 years old n my dad was using t before n its got a home made box so i wud have 2 take that apart 2 find out. ive been out in my car 1 day and had the seats at the back foward and its been k so far. ive heard about suing computer fans??
swez on 05/31/2008 06:23:40
OK, this sub is probably a single coil, 4 ohm sub. Kenwood did not make any dual coil subs 4 years ago and I don't know/believe they do now.
Knowing that much, dial back on your gain for the bridged channels a "fuzz" until the amp does not shut down. Also, if you are using much more than +6dB of bass boost, backing off on that will help too.
Fans can help cool the amp, but like all electronic devices, heat is the enemy. It's good that this amp has good protection circuits or it would be toast by now. In a nutshell, don't needlessly push your luck.
Swez
nick_welsman on 05/31/2008 09:08:08
yh thanks for the help, i dont use the bass boost as it sounds crap! its been k all day as ive had the seats forward n ill take care when powering it up! thanks again
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