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Post by heroesunplugged on Dec 6, 2017 23:36:12 GMT -5
Okay, I've been using XMC-1 with Dirac LE for several speakers and with the standard RCA out for a powered subwoofer. Tonight I hooked up as follows.
Main - Left & Right out to Sony TA-3200F amplifier via RCA running to JBL 4312a set to small with 70 Hz Crossover Subwoofer - Left & Right out to Emotiva SA-250 amplifier via XLR (settings: XLR, 24 dB gain, grounded) running to JBL E145-8 15s set in Stereo
Everything is fine (shows connected) until I get to setting the levels for the channels, before taking measurements. As soon as I click Play for the Left channel, I hear a quiet white noise type sound, followed by a click, when the Emotiva SA-250 amp goes into protect. I've checked the connections and they look okay
Any ideas? Not sure what is sending the SA-250 into protect. The Sony doesn't seem to mind. I can run this setup without Dirac, but think it will be a killer setup with Dirac.
Chris
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Post by markc on Dec 7, 2017 6:41:19 GMT -5
My Emotiva XPA 5 trips when I engage Dirac and a power movie soundtrack is playing I think it is because Dirac is boosting some frequencies and cutting others but somewhere there is a clip
I keep meaning to re-run the Dirac filters but lower the whole target curve a few dB to see it this stops it
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geebo
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Post by geebo on Dec 7, 2017 7:50:55 GMT -5
Try disconnecting the subs from the SA-250 and see if it still trips. BTW, it does no good to set levels before running Dirac. Dirac will reset all levels before running.
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Post by foggy1956 on Dec 7, 2017 9:27:02 GMT -5
Try disconnecting the subs from the SA-250 and see if it still trips. BTW, it does no good to set levels before running Dirac. Dirac will reset all levels before running. I believe he is setting the levels within the dirac app prior to running sweeps. What seems odd is that the sub outs are driving the amp into protect when there should be no signal being sent to the amp when testing the left speaker. Definitely time for a call to emo.
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Post by foggy1956 on Dec 7, 2017 9:43:10 GMT -5
Okay, I've been using XMC-1 with Dirac LE for several speakers and with the standard RCA out for a powered subwoofer. Tonight I hooked up as follows. Main - Left & Right out to Sony TA-3200F amplifier via RCA running to JBL 4312a set to small with 70 Hz Crossover Subwoofer - Left & Right out to Emotiva SA-250 amplifier via XLR (settings: XLR, 24 dB gain, grounded) running to JBL E145-8 15s set in Stereo Everything is fine (shows connected) until I get to setting the levels for the channels, before taking measurements. As soon as I click Play for the Left channel, I hear a quiet white noise type sound, followed by a click, when the Emotiva SA-250 amp goes into protect. I've checked the connections and they look okay Any ideas? Not sure what is sending the SA-250 into protect. The Sony doesn't seem to mind. I can run this setup without Dirac, but think it will be a killer setup with Dirac. Chris Can you check the levels on the other speakers?
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geebo
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Post by geebo on Dec 7, 2017 10:04:48 GMT -5
Try disconnecting the subs from the SA-250 and see if it still trips. BTW, it does no good to set levels before running Dirac. Dirac will reset all levels before running. I believe he is setting the levels within the dirac app prior to running sweeps. What seems odd is that the sub outs are driving the amp into protect when there should be no signal being sent to the amp when testing the left speaker. Definitely time for a call to emo. Doesn't matter if you set levels in the Dirac preset before running Dirac. Dirac will reset them and start from scratch. So it's just a waste of time.
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KeithL
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Post by KeithL on Dec 7, 2017 10:12:33 GMT -5
I've already seen most of the suggestions I would make.....
One important thing to remember is that the bass frequencies tend to contain (and require) a LOT of energy. Raising the level of any frequency band by several dB can easily end up requiring two or three TIMES as much power in that band. Lots of movies have lots of energy in the bass area; lots of rooms and subs require significant EQ in this area; and lots of people like loud bass. As a result of all these factors, a subwoofer is likely to need a lot of power, and likely to end up being boosted by EQ into needing even more.
Raising a certain frequency band by 6 dB will require about 4 TIMES the power...... If you've started out with a loud low rumble that used 200 watts..... you've just bumped that up to 800 watts. (This is one reason why most self-contained subs have very powerful amps; and most of those include limiters that allow you to overdrive them a little bit every now and then without noticing.)
Our amps will go into protect if you clip them significantly. (They're also very particular about loose wires and such... so it couldn't hurt to check your connections and drivers carefully.)
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Post by foggy1956 on Dec 7, 2017 10:19:46 GMT -5
I believe he is setting the levels within the dirac app prior to running sweeps. What seems odd is that the sub outs are driving the amp into protect when there should be no signal being sent to the amp when testing the left speaker. Definitely time for a call to emo. Doesn't matter if you set levels in the Dirac preset before running Dirac. Dirac will reset them and start from scratch. So it's just a waste of time. As I said, I believe he is trying to set the levels in the dirac app, not the dirac preset, could be wrong.
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geebo
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Post by geebo on Dec 7, 2017 10:25:45 GMT -5
Doesn't matter if you set levels in the Dirac preset before running Dirac. Dirac will reset them and start from scratch. So it's just a waste of time. As I said, I believe he is trying to set the levels in the dirac app, not the dirac preset, could be wrong. Why would he be using a Dirac app with Dirac LE and an XMC-1?
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Post by foggy1956 on Dec 7, 2017 10:27:41 GMT -5
As I said, I believe he is trying to set the levels in the dirac app, not the dirac preset, could be wrong. Why would he be using a Dirac app with Dirac LE and an XMC-1? Is not diracLE an app on a computer that you use to generate filters to input into an xmc-1? And, don't you set individual speaker levels within that app prior to running frequency sweeps on each individual speaker?
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geebo
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Post by geebo on Dec 7, 2017 10:53:17 GMT -5
Why would he be using a Dirac app with Dirac LE and an XMC-1? Is not diracLE an app on a computer that you use to generate filters to input into an xmc-1? And, don't you set individual speaker levels within that app prior to running frequency sweeps on each individual speaker? I know about the app. I used the trial a few years ago. But the OP says: "Okay, I've been using XMC-1 with Dirac LE" And the thread title is : "Dirac LE - Amp Trippin" Is there a Dirac LE app?
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Post by foggy1956 on Dec 7, 2017 11:07:31 GMT -5
Is not diracLE an app on a computer that you use to generate filters to input into an xmc-1? And, don't you set individual speaker levels within that app prior to running frequency sweeps on each individual speaker? I know about the app. I used the trial a few years ago. But the OP says: "Okay, I've been using XMC-1 with Dirac LE" And the thread title is : "Dirac LE - Amp Trippin" Is there a Dirac LE app? Would it be less confusing if I called it a program?
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Post by foggy1956 on Dec 7, 2017 11:11:46 GMT -5
Is not diracLE an app on a computer that you use to generate filters to input into an xmc-1? And, don't you set individual speaker levels within that app prior to running frequency sweeps on each individual speaker? I know about the app. I used the trial a few years ago. But the OP says: "Okay, I've been using XMC-1 with Dirac LE" And the thread title is : "Dirac LE - Amp Trippin" Is there a Dirac LE app? Using, XMC-1 with Dirac LE, do you not set individual speaker levels within the program prior to running frequency sweeps? I believe this is what he is doing when the amp goes into protect mode, as I said, I could be wrong?
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geebo
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Post by geebo on Dec 7, 2017 11:25:18 GMT -5
Would it be less confusing if I called it a program? Okay, maybe he's not setting levels in the XMC but after he starts Dirac. When he said "before taking measurements" I was thinking he hadn't even started the program yet. I envisioned him setting levels in the Dirac preset before running ie starting Dirac.
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Post by foggy1956 on Dec 7, 2017 11:32:28 GMT -5
Would it be less confusing if I called it a program? Okay, maybe he's not setting levels in the XMC but after he starts Dirac. When he said "before taking measurements" I was thinking he hadn't even started the program yet. I envisioned him setting levels in the Dirac preset before running ie starting Dirac. Ok, but that is not what he stated, and you do set levels within dirac "before taking measurements"
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Post by heroesunplugged on Dec 7, 2017 11:34:40 GMT -5
Try disconnecting the subs from the SA-250 and see if it still trips. BTW, it does no good to set levels before running Dirac. Dirac will reset all levels before running. I believe he is setting the levels within the dirac app prior to running sweeps. What seems odd is that the sub outs are driving the amp into protect when there should be no signal being sent to the amp when testing the left speaker. Definitely time for a call to emo. Yes, you've got it.
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Post by foggy1956 on Dec 7, 2017 11:43:54 GMT -5
I believe he is setting the levels within the dirac app prior to running sweeps. What seems odd is that the sub outs are driving the amp into protect when there should be no signal being sent to the amp when testing the left speaker. Definitely time for a call to emo. Yes, you've got it. Can you set levels on any of the speakers without going into protect?
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geebo
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Post by geebo on Dec 7, 2017 11:44:53 GMT -5
Okay, maybe he's not setting levels in the XMC but after he starts Dirac. When he said "before taking measurements" I was thinking he hadn't even started the program yet. I envisioned him setting levels in the Dirac preset before running ie starting Dirac. Ok, but that is not what he stated, and you do set levels within dirac "before taking measurements" I think I understood wrrrrrr, wrrrrrrr, incorrectly.
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Post by heroesunplugged on Dec 7, 2017 11:48:14 GMT -5
This happens when I am setting up the individual speakers in the Dirac LE Program/App. I only have the "house curve" as an option here. Amp plays fine with loud bass heavy music outside of Dirac. Very impressed with how it handles these JBL 15s, but the SA-250 doesn't like something that Dirac is doing so may just have to skip it and try a pro amp later down the road. Not sure why adjusting the Left channel level, has anything to do with the signal directed to the amp connected to the subs?
I will try each channel independently and also move to a regular RCA cable. Will see what happens later today.
BTW, cables are't loose, otherwise it would do the same when playing music. I'm using pin connectors and the JBL have heavy duty push/release spring clips. The wires are very securely inserted.
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geebo
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Post by geebo on Dec 7, 2017 11:48:46 GMT -5
Still, the first thing to try is unplug the subs from the amp at the amp and try again. That will show if there is a bad connection after the amp. It's simple to try. I'm sure Emo would like to know if the 250 is resetting using Dirac levels even with no speakers connected.
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