Poweramp sensitivity

It certainly could be. If that is an easy option, just try it.

It may not be helping the matter. The amp is expecting a balanced signal and providing an unbalanced signal means your input level is even that much lower. That being said, many, many devices with "balanced" outputs have impedance balanced outputs which helps with the noise characteristics of a balanced connection. But, they don't actually have audio signals with opposite polarity on the two lines. Which means that when the two lines are summed at the input of a device, the audio signal is still the same level as if you ran an unbalanced line between the two.

In other words...
Truly balanced output to balanced input:
a - (-a) = a + a = 2a

Impedance balanced output to balanced input:
a - (0) = a

- John

 

What poweramp are you using?
If you can switch the input sensitivity from 1.4v to .7v, you should be good to go

 

It accounts for 6dB of it. Most bass amps have 100mV sensitivity for passives, maybe 1v for actives, and they also have a lot of gain before the power amp.

 

If you are tapping out the knobs on the pedal and amp but not seeing any clip light indications, you certainly have more output available. Give that sensitivity switch a shot and let us know.

- John

 

What's the rated nominal output level and maximum output level of the pedal?

 

These are essential specs, otherwise there is no way to know way to know what the real problem is.

 

Ask Darkglass... very friendly owner I think.

 

I agree with @agedhorse, that you need to know the output level and max output level of the pedal to set your amp input sensitivity correctly. I will also add that unless you are using the Direct Out for something else, with your setup I would use it to feed the power amp.

 

@Darkglass

 

I don't think the direct out has sufficient level to drive a power amp.

 

You have checked to make sure that you don't have the input pad on right?
And you have a fresh battery in your bass right?
And, have you tried using other cords both to the pedal and to the amp?

Lots of simple thing that can trip you up.

Also, if you haven't cleaned your amp in more than a year, you need to get a can of DeOxit5 (red-label can) and clean all the 1/4" plugs both input and output that your amp has (unplug your amp first of course). Real easy for a jack, especially an unused jack, to get some corrosion on it and if the signal path of the amp goes across that jack, you can get volume drop, static, pops, etc. Just spray some cleaner on a 1/4" plug and move it in and out of each jack about 10-15 times. Do that on an annual basis to keep your amp in good shape.

 

Tiny, tiny amount of DeOxit. Don't spray it into the amp.

Just had an amp in the shop yesterday that was ruined by a way to liberal application of such cleaner (don't know what it was), amp was so slimy and nasty inside, all the pots ruined, spray got into the high voltage parts of the switchmode power supply... cost of repair exceeded the value of the amp. Would have been a $75 repair otherwise.

 

You’re probably right. Maybe @Darkglass can give the spec for that output as well.

 

Change the battery in your active bass if it is not fresh.

810 at 4 ohms stereo ? Just wondering how stereo? This is a Gallien-Krueger 810 RBX isn’t it?

Setting the input sensitivity on your power amp to 0.7v means that is the RMS voltage that is required to drive the amplifier to full power. It can help if your preamp signal is low.

I would try the balanced out on the pre into the power amp.

It is important that the power supply of the pedal is a full 9VDC well regulated, otherwise the pre can hum.

 

They probably didn't use a paper towel to block off the area, and sprayed it like ether into a carb.
Also decided to clean everything they could see, bc I've had a couple people tell me that's their line of thinking cleaning instruments & amps.