New Cavalli Audio Liquid Glass Amplifier - Fall Release | Page 39 | Headphone Reviews and Discussion - Head-Fi.org

jazzerdave · Aug 10, 2013 at 1:43 AM

Quote:

soundfreaq said:
Good news! The LG was such a hit, there is a second production run in the works right now. It will be represented at RMAF, and shipping shortly after.

Cool Beans! I'm glad to hear it.

azynneo · Aug 10, 2013 at 2:59 AM

does anyone's offset detector (red light under the volume pot) pop up randomly like every 3-5 minutes or so? My tubes are in completely so I'm wondering if my source could be the problem.

i find this actually happens when i power on my ac and power it back on <_<..

and just tried it a million times it doesn';t do it anymore.. what's goin on here

yep.. it was the AC killing the amp.. sigh.. living in a garage is fun

R Scott Ireland · Aug 10, 2013 at 5:00 PM

azynneo said:
does anyone's offset detector (red light under the volume pot) pop up randomly like every 3-5 minutes or so? My tubes are in completely so I'm wondering if my source could be the problem.

i find this actually happens when i power on my ac and power it back on <_<..

I've only had this happen a couple of times when I turned the volume all the down.
I've had this happen a couple of times when I turned the volume all the way down. Not sure why, and it only happened a couple of times.

I've had the red light come on occasionally when I turn the volume all the way down. Not sure why. It only happened a few times, then nada.

and just tried it a million times it doesn';t do it anymore.. what's goin on here

yep.. it was the AC killing the amp.. sigh.. living in a garage is fun

R Scott Ireland · Aug 10, 2013 at 5:06 PM

Weird. I can't seem to post my message with the above quote.

I have had the red light come on a couple of times when I turn the volume all the way down.

azynneo · Aug 10, 2013 at 5:08 PM

Quote:

r scott ireland said:
Weird. I can't seem to post my message with the above quote.

I have had the red light come on a couple of times when I turn the volume all the way down.

You have to copy and paste individual lines

or make it easier and just bold your response.

I fixed it, it was my air conditioner pushing so much DC that my amp was literally shaking and the internal protection went on and my amp turned off.

<_<..

Greed · Aug 10, 2013 at 5:14 PM

Quote:

azynneo said:
You have to copy and paste individual lines or make it easier and just bold your response.

I fixed it, it was my air conditioner pushing so much DC that my amp was literally shaking and the internal protection went on and my amp turned off.

<_<..

I've had this happen a few times. A bit annoying...

I thought a power conditioner would help, but it hasn't. I might try a power regulator, I'm guessing that would solve the issue. I just don't feel like dropping a couple grand to fix what I see as a avoidable issue.

azynneo · Aug 10, 2013 at 5:17 PM

Quote:

greed said:
I've had this happen a few times. A bit annoying...

I thought a power conditioner would help, but it hasn't. I might try a power regulator, I'm guessing that would solve the issue. I just don't feel like dropping a couple grand to fix what I see as a avoidable issue.

but see, I live in a garage in southern california

Greed · Aug 10, 2013 at 5:21 PM

Quote:

azynneo said:
but see, I live in a garage in southern california

Oh, I don't mean avoidable for you... I mean the design is a bit annoying. I haven't had any other equipment trip because of my AC unit before. It just seems like a issue that should have been thought about. I'm trying to find a easy, budget friendly way to remedy the situation because right now I can't use my LG with my AC on... which is a drag. Any luck finding a solution?

azynneo · Aug 10, 2013 at 5:24 PM

Quote:

greed said:
Oh, I don't mean avoidable for you... I mean the design is a bit annoying. I haven't had any other equipment trip because of my AC unit before. It just seems like a issue that should have been thought about. I'm trying to find a easy, budget friendly way to remedy the situation because right now I can't use my LG with my AC on... which is a drag. Any luck finding a solution?

Yep, unplugging my AC and dying with sweat

john57 · Aug 10, 2013 at 6:06 PM

Try to find a electrical outlet that is on a different circuit breaker from the AC and see if it will help. Use a extension cord if needed.

dBel84 · Aug 10, 2013 at 6:13 PM

The amp will tolerate quite large voltage shifts but anything beyond a 20V surge will push the regulator out of regulation for a second and cause the output to see DC - this amp uses a sophisticated sensor to protect the headphones and thus the change will be enough to trigger the sensor. It would be possible to change the sensitivity of the sensor. Most other audio equipment do not have these sensors in place and thus would merely push the dc into the headphones for a second or 2 , probably not much harm except if it happened to be a particularly large surge into very sensitive headphones. A power conditioner does not regulate as you pointed out , thus it will have no impact. A dedicated line for the audio circuits ( ie not on the same power socket ) as the ac - not really possible in a garage unless there is a separate switchbox. An expensive power regulator or a cheap ( and nasty ) solution by using a high power battery UPS..dB

Greed · Aug 10, 2013 at 6:24 PM

john57 said:
Try to find a electrical outlet that is on a different circuit breaker from the AC and see if it will help. Use a extension cord if needed.

Thanks, I have thought about that. Unfortunately in my house the circuits are wired in an extremely unorganized way. I can just imagine the drunk fool that wired my house. Some idiot that really had no idea what he was doing, and how it could affect the life of the person/s that have to live in the house.

Originally Posted by dBel84 /img/forum/go_quote.gif

The amp will tolerate quite large voltage shifts but anything beyond a 20V surge will push the regulator out of regulation for a second and cause the output to see DC - this amp uses a sophisticated sensor to protect the headphones and thus the change will be enough to trigger the sensor. It would be possible to change the sensitivity of the sensor. Most other audio equipment do not have these sensors in place and thus would merely push the dc into the headphones for a second or 2 , probably not much harm except if it happened to be a particularly large surge into very sensitive headphones. A power conditioner does not regulate as you pointed out , thus it will have no impact. A dedicated line for the audio circuits ( ie not on the same power socket ) as the ac - not really possible in a garage unless there is a separate switchbox. An expensive power regulator or a cheap ( and nasty ) solution by using a high power battery UPS..dB

Thanks dB, for the info. I appreciate the extra mile Alex went to help secure all the expensive gear that revolves around an amp such as the LG. I guess somethings can be considered overly protective, and I think this maybe an area that could be an option maybe when buying, or selectable option (via switch, etc) on the amp. Either way, it is a small issue that really doesn't change my opinion of Alex or his amps. I guess I will have to check out a power regulator or a UPS. Any recommendations? I've looked into the PS Audio stuff. Looks impressive, and I really like their products... but I'm just not ready to drop $2K on something like power regulating right now...

john57 · Aug 10, 2013 at 8:52 PM

[size=medium]If you cannot hire an electrician to fix up the wiring in the house you can also look at a online UPS with pure sine wave output not a standby UPS at Amazon: "[/size]

[size=medium]True On-Line Operation with Zero Transfer Time[/size]

[size=medium]The SU1000XLa provides the highest level of protection available for mission-critical equipment. It actively converts raw incoming AC power to DC, then re-converts it back to regulated, filtered AC output with a pure sine wave, completely isolating connected components from all power problems. Zero transfer time between AC and battery operation maintains continuous output and further protects connected equipment from the disruptive effects of blackouts and severe low-voltage conditions. Sine wave output guarantees compatibility with all equipment types."[/size]

[size=medium]http://www.amazon.com/Tripp-Lite-SU1000XLA-1000VA-Online/dp/B000HVVKK6/ref=sr_1_2?ie=UTF8&qid=1376181068&sr=8-2&keywords=online+UPS[/size]

smaller

http://www.amazon.com/TRIPP-SU750RTXLCD2U-750VA-Online-Rackmount/dp/B009NE77UK/ref=sr_1_1?ie=UTF8&qid=1375380023&sr=8-1&keywords=su750rtxlcd2u

[size=medium]This is just an example since there is a lot of junk out there. The one issue with the online UPS is that it has fans to cool the units and might be a bit noisy since online UPS runs quite warm in operation. [/size]

[size=medium]P.S. The example I have shown above is a Double-Conversion UPS type just to be exactly correct. Great price and heard that the larger unit uses two fans and may be more quiet. [/size]

azynneo · Aug 11, 2013 at 12:23 AM

Well, I hooked up a long power line going to my living room from the garage and powered it on without problems, they're on different circuit breakers so that should be fine right?

dBel84 · Aug 11, 2013 at 1:13 AM

In theory, this should offer them some isolation from each other..dB

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