7125 shutting down

Has anyone experience the 7125 shutting down the front left and right channels after about 15 minutes of playing at high volume? I am using Klipsch RF35 as mains . They are 8 ohms.

Is the unit well ventilated? Is it getting physically hot?

I don't have a fan on it. It gets hot in an open rack. It doesn't have any doors.

Mine is having no heating problems. Actually, it runs fairly cool.

Rob Faulkner

Do you have anything on top of it? How much open space above/below and on the sides?

Cheers,

It's on the bottom of the rack, with about 4 inches space above it. And about 2 inches on each side. Admittedly I don't run it full tilt, Im only using 5 Channels atm. But... it has not given me any trouble.

Rob Faulkner

Mine has about 7 " above and 2 " on the sides. Anyway I spoke to Outlaw and I was given some advice. I changed to the crossover to 80 and use small for the mains. I also had the bass at +4 which I changed to 0. So far it sounds great and it's not shutting down anymore. I still have to do some listening to make sure it's ok. Thanks for responding guys.

Why would the crossover point cause the amp to overheat? Why would bass at +4 cause the amp to overheat?

Granted I had small and an 80hz Fronts/Center 100hz Rears crossover setting. But isn't this Amp designed to handle full range speakers all the way around?

Is there something we need to be made aware of?

Rob Faulkner

Hello Rob,

The Model 7125 is even more robust than the 7100 it has replaced. In fact, initial reports on the Model 7125's power have been overwhelmingly positive. When troubleshooting a particular issue, there are many steps that must be covered and variables that must be considered. With regards to the 7125's output, I can assure you there is nothing to be concerned with.

Best,

Scott

New poster here. Outlaw is on my short list of amps to drive my Onix Rockets (four 6-ohm, and one 4-ohm speakers). But to be honest, the crossover change, as well as a main speaker change from large to small, has me a bit concerned. Only a bit because others have posted no issues.

While the changes fixed the OP's problem, I don't understand why! Could it be that the OP's unit is defective?

EDIT: 9/4 @4:48PM
In addition, if I were to experience the same issues as the OP, will those issues be covered by the warranty?

-T

It takes mor power to drive lower frequencies. This is why the bass should be turned down and the crossover set higher. I used to use a Carver av-705x 5-channel x 125 watt amp. I have recently bought two 755 amps. Let me tell you there is a world of difference between a 125 watt and 200 watt per channel amp. A 125 watt amp may give a slight edge over a receiver's internal amp section, but the 200 watt amp has more head room and better dynamics. A good part of this is due to bigger transformers and caps inside the amp. You can never have enough power. I drive Klipsch speakers and probably use a small fraction of the 755's power, but the jump to the 200 watt amp has made a huge difference, especially in the lower frequencies. I use one of the amps to drive the surround channels and a pair of SVS 20-39CS+ subs and have never heard the 200 watt model strain whatsoever.

Doug917,

I am aware that directing bass to the sub lightens the load for the receiver/amp... but DDavid said the following:

"Has anyone experience the 7125 shutting down the front left and right channels after about 15 minutes of playing at high volume? I am using Klipsch RF35 as mains . They are 8 ohms. "

My Rocket mains and surrounds are 6 ohm, with a 4 ohm center. I drive them with an Onkyo TX-SR702 rated at 100 W/ch, but will 5 channels driven it's probably closer to 50 W/ch. And the Onkyo drove them for 6 months before I got the SVS, so all 5 speakers were set Large.

During those 6 months, I listened to movies at 72 dB at the listening position 13 feet from the mains/center... so the mains/center were putting out 84 dB at 1 meter (plus more dB for peaks)

DDavid did not mention the dB level at his listening position, but if my Onkyo 702 drove the 4 ohm center (receiver is rated at 6 ohm and above), and 6 ohm mains and 2 surrounds, all full-range without ever shutting down, then it's no wonder why I am concerned with the shut-down issue.

-T

Since I've never experienced this before with my amp, I have to ask this question: would overheating or overdriving of an amp ever shut down just specific channels? I was always under the impression that the power supply is what cuts out under duress. Am I underinformed here?

T-Bone,

I would agree the amp should power the speakers to insane (Klipsch have very high sensitivity) levels before shutting down. We need more info as far bass settings, tone control settings, SPL measurement he's listening at, etc.

DDavid,

Have you rechecked all the speaker wire connections to make sure there were no stray wires making contact anywhere?

Sluggo,

I'm under the impression he was just listening to 2-channel stereo and it shut down the amp. I could be mistaken here. However, depending on how modular an amp is, I could see one shutting down individual channels.

There is no shutdown issue. We have hundreds of these amplifiers in the field that have had absolutely no issue driving difficult loads. While one gentleman (DDavid) had an issue, it is unclear what specifically caused the shutdown in his system.

Bass and treble are set to 0 on the 990. I used the auto setup and front speakers are at 17 feet. Speakers are set to small- 80hz. Volume on the 990 is between -6 to 0. I was listening to 2-channel stereo. Customer service are extremely helpful. They sent me a new 7125 and after about 45 mins it shut down the left front channel. Maybe it something else. I'll troubleshoot some more and update all. Any suggestions will be greatly appreciated. Thanks everyone.

i would start looking at the speakers.i'm sure you know,next move is to switch front speakers,and see what happens.

also,what is the mic. location relative to l & r speakers,you stated auto-setup,equal distance to both?

re-reading this post has me thinking,it's maybe a bass issue with your speakers,maybe a driver,maybe an inductor in the x-over(speaker's)

some thing gets hot,it fails,amps protection circuit protects amp.
seems like you changed the bass to your klipsch and it took longer to get hot and fail??maybe??

i had a similar problem years ago.

will it come back on immediately?(after shutting amp off)will it shut down immediately?

give some more description of exactly what's happenning.

Sluggo:

I have managed to shut my 7100 down only one time in about 2 years. I was driving it hard for over an hour and a half and it sits in a rather small space(only 3 1/2" above and glass doors in front so not a lot of air flow. It only made the right front channel stop so I would say that each channel has its own shut off. After I let it cool down it has performed flawlessly. Hope this helps

Lasher

Okay, after seeing DDavid's last response, and Scott's too, I'll agree that there is no shutdown issue.

Good to know... I would have hated to scratch the 7125 off my shortlist.

-T

What are you listening to? when this happens. What equipment, cd player? tuner?


Sounds u have distortion, being fed thru.....

That is why lowering the bass to 0 and checking the cross over fixed at the listen lvl you set the volume.....

This happened with my car stereo, i would either lowered the gain on the amp, or lowered the bass increase at the headunit..... lol it happen mostly listen to hard hitting bass from a Primus CD. not real much on rap/hip hop boomy bass.

It would be nice if they add a clipping light to each channel. Then you could see when the amp start clipping and adjust either the volume or the gain

My 7125 (B-stock)is continously shutting down the right channel when I play music on stereo mode. I'm not pushing the unit too hard, imo, as this is happening at -11dB. It happens after about 10-15 minutes of listening. I was able to recreate the problem playing music thru the DVD player to rule out a problem with the cd player. I reversed R and L channels on the cable going from the preamp to the power amp and the problem continued to exsist in only the right channel. There is proper ventilation and the unit is not very hot at all. Can anybody think of any other issues I should check to determine if the problem is the 7125 or not? Thanks in advance for any assistance.

From what you've said, it certainly sounds like a problem either in the amp or in the wiring between the amp and the speaker (an intermittent short could probably cause what you're seeing - such as a stray strand of speaker wire just barely touching the opposite binding post). If you haven't done so already, I'd suggest checking your speaker cable at both ends. Barring an obvious problem there, I'd suggest calling Outlaw tomorrow or submitting a support request .