amplifier cuts off

tonyeastview · Post by **tonyeastview** » Mon Mar 22, 2010 12:02 pm

Alright so I just bought myself a used pheonix gold amplifier, its an octane R5.0.1. Anyways ive had a couple issues so far and im really looking for some help. So the problem stats when i turn up the volume, after about 10 15 min of blasting the amp completly cuts off and the the blue ring around the phoenix gold logo starts flashing on and off and i have to turn down the volume for about 2 mins and it resets. After the first time tripping tho its alot easyer to lose the amp again.

Anyways any suggestions ideas would be greatly appreciated thanks!

Post by **Rold Gold** » Mon Mar 22, 2010 12:12 pm

Sounds like it might be getting too hot and the thermal protection is kickin in.

How are the subs wired?

tonyeastview · Post by **tonyeastview** » Mon Mar 22, 2010 12:16 pm

well i have two subs in a homemade box directly wired to the amp, and ya im pretty sure it is the thermal protection cause the THO red light used to come on before that, problem is i dont know how to prevent it cause the amp is located in a nice open space so it shoudnt have any trouble at all but im not sure

gbody805 · Post by **gbody805** » Mon Mar 22, 2010 12:32 pm

Please let us know what exactly --"after about 10 15 min of blasting"-- Means.

Are you going to full volume for your blasting ?

When you say home-made, did you make it and did you measure to fit the sub or the space for the box?

Post by **Rold Gold** » Mon Mar 22, 2010 12:33 pm

You need to find out what ohm the woofer is. Is it a single voice coil or dual voice coil?

tonyeastview · Post by **tonyeastview** » Mon Mar 22, 2010 12:36 pm

Definetly not full volume it would trip probably instantly if i would but it is moderetly loud, althou when i did set it up the guy i was with set the sensitivity on the amp to the max so maybee if i turn that down a notch, but then again i dont want to lose some bass just so my amp wont trip

Post by **Rold Gold** » Mon Mar 22, 2010 12:48 pm

Yeah..........I'd recommend droping that down alittle. And turn down the boost aswell.

Post by **ttocs** » Mon Mar 22, 2010 12:59 pm

we need to know what woofers you have, model number and voice coil configeration to make sure that they are properly matched.

shaheen · Post by **shaheen** » Mon Mar 22, 2010 1:18 pm

Well sounds like you hve 3 problems

1. Your Gains (or Sensitivity) os not correctly set, you should never really be more then 50% , depending on headunit.
2. Your woofers may be connected incorrectly to the amplifier , showing a too low load on the amp and heating it up quicker
3. You have a friend who has no idea about audio and just likes to turn everything up.

Problem 1 and 2 are easy to solve, problem 3 maybe a bit of a problem.

You lucky that you have a well engineered amplifier which switches off instead of breaking itself. If you carry on theway you are , I can guarantee you will break the woofers,

Post by **kg1961** » Mon Mar 22, 2010 1:23 pm

what kind and what size is your power/gropund wire ? this might help find out whats causing this.
and remember bass boast

makes the amp work allot harder
it just might be clipping or working the amp to hard with the wire you have ????
just some other ideas

tonyeastview · Post by **tonyeastview** » Mon Mar 22, 2010 2:20 pm

Thanks alot for the help! Il give some of those ideas a try and hope for the best, and by the way my ground wire is a little bit smaller then my power wire so posebly thats causin a problem. anyways thanks again im pretty new at this stuff but im hoppin to learn.

Post by **Rold Gold** » Mon Mar 22, 2010 2:22 pm

Stick around and read some threads and you'll lear tons....

We all started somewhere ya know. Don't hesitate to ask questions. The only stupid question is the one not asked. And there are no stupid questions ....only stupid people.

Stryker · Post by **Stryker** » Mon Mar 22, 2010 2:32 pm

having very little info to go on makes it tough for us to help, but i will give my .02.
I'm thinking if the gain is at 1/2 after readjusting and your woofers are wired correctly to show the amp a load of no less than 2 ohm's, i would take a guess and say there is something wrong with the amp on the inside such as a diode that is directly involved with the thermal protection.
I had a 400.2 Ti that had this issue and it needed to be repaired by PG. the tell tale sign that will have to be checked by you will be how hot it gets when it first thermals and starts to cycle on/off. just go somewhere listen to it at a good volume maybe 2/3ish it will eventually do as you say and then feel it with your hand. if it's too hot too touch for even a short time it needs fans, or your subs are loading the amp down past 2ohm's.
If it's barely warm my guess is it's a broken part on the innards of your amp.

Post by **smgreen20** » Mon Mar 22, 2010 5:47 pm

WHAT WOOFERS?
WHAT OHMS ARE THEY?
SINGLE or DUAL VOICE COILS?

Do you not understand these questions? You keep avoiding them. Other then thermal, it could be to low of an ohm load for the amp. As you push harder on the volume, the impedance will change more and the harder you drive the amp the ohms will dip to low for the amp to handle. That would explain also why if you went full tilt the amp would trip instantly.

Post by **ttocs** » Mon Mar 22, 2010 6:09 pm

we need a "THIS POST IS WORTHLESS WITH OUT MODEL #'S" smileys.

Stryker · Post by **Stryker** » Mon Mar 22, 2010 6:20 pm

ttocs wrote:we need a "THIS POST IS WORTHLESS WITH OUT MODEL #'S" smileys.

I concur, but if OP is unwilling to provide answers to above questions. I'm done here. My system works great and is F'n loud as all hell

why i try to help now and then i have no idea quite honestly

Post by **kg1961** » Tue Mar 23, 2010 5:58 am

Stryker wrote:
ttocs wrote:we need a "THIS POST IS WORTHLESS WITH OUT MODEL #'S" smileys.
I concur, but if OP is unwilling to provide answers to above questions. I'm done here. My system works great and is F'n loud as all hell why i try to help now and then i have no idea quite honestly

yes your system is fuckin loud Corey!!!!
I like it just wish my trunk/Family would let me play like you
how's the car doing now that its a PG show car...lol as per there web site

tonyeastview · Post by **tonyeastview** » Wed Mar 24, 2010 11:21 am

Fixed it guys! thanks alot for the help and ya slow replys but ive been busy, i just truned down the bass a bit as well as the sensitivity, and put in a good ground and know she works like a charm. its an old amp but ya gotta love that PG quality

amplifier cuts off

amplifier cuts off

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