My head is spinning
The Emotiva XPA-3 (Gen3) amplifier generally requires 1.71 Volts of input signal to reach its rated power output into an 8 Ohm load, with a gain of 29 dB
well for 1 make sure your rockford dsp isn't sending more than 1.7v through the rca into the xpa 3
well for 1 make sure your rockford dsp isn't sending more than 1.7v through the rca into the xpa 3
I'm running an 11.5.8 Atmos setup, Marantz Cinema 50, miniDSP Flex HTx (x2), miniDSP DDRC-24 (subs),
Adcom GFA-5802, GFA-5800, GFA-5500 (x2), GFA-565 (C), Crown Audio XLS 2502, Emotiva XPA DR2, Oppo UPD-203, Elite PDR-99, Pioneer Elite CT-W54, Mitsibishi Super VHS, Pioneer Elite CLD-99, and never so much as a whisper from anything and certainly nothing that is smoking!
Most of it is wired together with Audioquest or Monster Reference ll Series RCAs. Assuming you're using the DSR1? The output is 0-4V, check the output levels to the Emotiva xpa3 gen 2 and on;t exceed the recommended input voltage level.
To support the sequential on/off, I've got dual Sundavo PMX-6600s plugged into a Monster Power HTPS 7000 Signature AC Conditioner - no ups.
Is your Emotiva getting adequate power, and did you see or start to smell smoke?
Adcom GFA-5802, GFA-5800, GFA-5500 (x2), GFA-565 (C), Crown Audio XLS 2502, Emotiva XPA DR2, Oppo UPD-203, Elite PDR-99, Pioneer Elite CT-W54, Mitsibishi Super VHS, Pioneer Elite CLD-99, and never so much as a whisper from anything and certainly nothing that is smoking!
Most of it is wired together with Audioquest or Monster Reference ll Series RCAs. Assuming you're using the DSR1? The output is 0-4V, check the output levels to the Emotiva xpa3 gen 2 and on;t exceed the recommended input voltage level.
To support the sequential on/off, I've got dual Sundavo PMX-6600s plugged into a Monster Power HTPS 7000 Signature AC Conditioner - no ups.
Is your Emotiva getting adequate power, and did you see or start to smell smoke?
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He's running a 3sity.3 0-8v out
Definitely not sending 8v to the xpa
But with only 1.7v input sensitivity I'm willing to bet he's pushing that or more easy probably why it started smoking
I wondered about that...
They don't take kindly to excessive voltage over rated by much, and if I'm not mistaken, the non-reference Emotiva maxes out at 1.5 VRMS, the reference series up to 2.1 VRMS. I suspect that he may have toasted or started to toast something in the input section of the amp.
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- Thread Starter
- #7
Thanks, I'll start by measuring my RCA preout voltage. I tried but my dmm wasn't sensitive enough to detect it.
Maybe I'm missing something dumb here, but I was able to turn it way way loud for a few hours without issue. Doesn't more RCA voltage = more volume?
The emotiva does not have gain control.
So let's say theoretically I fed the emotiva 1.5v to hit 110db and was stable for hours
I didn't see how it would be possible to start feeding it say 8v to only hit 90db.
Is it possible to somehow feed it more voltage have less output?
This would obviously be possible if the amp had gain control, but it doesn't. Am I mistaken?
Maybe I'm missing something dumb here, but I was able to turn it way way loud for a few hours without issue. Doesn't more RCA voltage = more volume?
The emotiva does not have gain control.
So let's say theoretically I fed the emotiva 1.5v to hit 110db and was stable for hours
I didn't see how it would be possible to start feeding it say 8v to only hit 90db.
Is it possible to somehow feed it more voltage have less output?
This would obviously be possible if the amp had gain control, but it doesn't. Am I mistaken?
- Thread Starter
- #8
I'm using a Rockford fosgate 360.3, not a dsr1.
My APC backup has a master plug that controls the slave plugs. My marantz is the master and when powered on or off will also power on and off my emotiva, and 12v power supply/remote
The emotiva is 120v, what do you mean by adaquate power? Are you asking if the voltage of my house drops under 120v at load? My 120v is stable.
Personally it's all I can see what may have caused the xpa to smoke
I'm sure the subs you have connected to it are 8ohm?
Emotiva is 4ohm stable regardless
Also may have too many units running off the apc as it's only 12-15 amps
But might have popped the breaker on the unit if was maxed out
Either way I would still try to get the emotiva on a separate circuit
The only thing I can see is the input sensitivity
I would definitely confirm ur in line with the xpa max input voltage
Emotiva makes good gear it's possible you got lucky pushing it for couple hours
I'm sure the subs you have connected to it are 8ohm?
Emotiva is 4ohm stable regardless
Also may have too many units running off the apc as it's only 12-15 amps
But might have popped the breaker on the unit if was maxed out
Either way I would still try to get the emotiva on a separate circuit
The only thing I can see is the input sensitivity
I would definitely confirm ur in line with the xpa max input voltage
Emotiva makes good gear it's possible you got lucky pushing it for couple hours
Understood, but even stable voltage can drop between 2-5%.
Didn't spend a lot of time on the UPS in use, so probably a non-issue, but my setup is on a dedicated 30A circuit, and it makes a difference.
As to the input voltage, if too high, when you had it up loud, it may have been clipping, even slightly, but your lights should have blinked red if that was the case.
Did you feed the Maraantz a 1khz sine wave when testing the voltage output with the MM? Get a simple USB flash drive, feed the Mrantz a 1khz sine wave, then check the voltage output of the DSP unit, see if that helps get a good reading.
I recently picked up one of these guys and use it everywhere.
Recoil MST-1 Handheld Multi-function Audio Tester | eBay
It is perfect for safely troubleshooting and audio systems testing. It has all the features you need to ensure optimal performance and precision. Speaker and System Phase Tester. Wire & Signal Cable Continuity Tester.
- Thread Starter
- #11
You both mentioned something very similar to something I was thinking already - which is too start using a second circuit in my house, however I was hoping that by isolating the cheap 12v power supply that I could remove some of my feedback issues.
The fact that my ceiling fan introduces distortion... I can't think of anything besides a noisy PSU sharing the home circuit.
The fact that my ceiling fan introduces distortion... I can't think of anything besides a noisy PSU sharing the home circuit.
- Thread Starter
- #12
Wow, if only I knew that tool existed 10 years ago. Alright I'll spend about more time looking at my voltage coming out from the 360.Understood, but even stable voltage can drop between 2-5%.
Didn't spend a lot of time on the UPS in use, so probably a non-issue, but my setup is on a dedicated 30A circuit, and it makes a difference.
As to the input voltage, if too high, when you had it up loud, it may have been clipping, even slightly, but your lights should have blinked red if that was the case.
Did you feed the Maraantz a 1khz sine wave when testing the voltage output with the MM? Get a simple USB flash drive, feed the Mrantz a 1khz sine wave, then check the voltage output of the DSP unit, see if that helps get a good reading.
I recently picked up one of these guys and use it everywhere.
Recoil MST-1 Handheld Multi-function Audio Tester | eBay
It is perfect for safely troubleshooting and audio systems testing. It has all the features you need to ensure optimal performance and precision. Speaker and System Phase Tester. Wire & Signal Cable Continuity Tester.
I didn't realize it output 8v and my emotiva can only handle 1.7.... I think we are onto something here
- Thread Starter
- #13
I think you are likely correct.
The speakers are actual 4ohm but each cabinet has 2 15s so I'm wired to 8. I thought the emotiva was going to be the least of my worries but it makes sense that the audison would tolerate higher input RCA volts, and I have the gain set real low on them.
While it makes sense that the home theater equipment expects a standard preout.
- Thread Starter
- #15
I purchased the highest db attenuation conditioner on Amazon I could find, shorter RCA's, and some clamp on ferrites. Hopefully those solves that awful feedback I'm getting. If not I'll return it.
From some of the articles I saw as soon as you plug in dc voltage to the same circuit it can backfeed into RCA's in home audio.
Additionally I got some -12db RCA attenuators to keep plugged directly into the emotiva at all times. Honestly this was chat gpts call, I've never used them before but theoretically it will reduce my 8v RCA down to 2v.ill obviously measure voltage on the preouts to confirm but I'm keeping that so unplugged until they show up next week.
furmanpower.com
From some of the articles I saw as soon as you plug in dc voltage to the same circuit it can backfeed into RCA's in home audio.
Additionally I got some -12db RCA attenuators to keep plugged directly into the emotiva at all times. Honestly this was chat gpts call, I've never used them before but theoretically it will reduce my 8v RCA down to 2v.ill obviously measure voltage on the preouts to confirm but I'm keeping that so unplugged until they show up next week.
Furman ELITE-15I Power Conditioner | Home Theater Surge Protection
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furmanpower.com
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