this can't possibly be a requirement, particularly given that it is a plate amp (i.e. it would be completely impractical to have to pull drivers out of the cabinet every single time you want to change the filters). I don't see this in the manual anyway.
To be exact, there are binding posts between the woofer and speaker cables from the plate amp.
And yeah boy
First you got your 2 modules with no cables or speakers connected!
Master
1. Plug- in the power connector and switch the module to ON - switch on the physical switch?
2. Power up the module by the control panel or remote - where is the control panel? Using the HFD software to power up the module?
Slave
1. Start the pc program, Hypex filter design. Or close the filter design screen if the program is still running
2. Plug- in the power connector and switch the module to ON - I am very sure this is referring to the physical switch, am I wrong?
3. Plug-in the USB cable (assumed that you've already installed the software as described in chapter “Software installation” )
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So, if working with HFD filter software connected to the plate Amp and speakers are able to destroy drivers, then we have a problem !
It's something that needs investigation from Hypex
You can definitely work in HFD with the speakers connected.
I think the general rule of practise is to initially set up the board and a filters, without any speakers connected, once you have a filter in place you can connect speakers and play with the DSP and all settings. This way the board knows if its master or slave, source, input volume and all that. I think if you just plug in speakers and a source it could power through at full volume, or you accidentally bridge the connections when your not supposed to etc.
Careful with the volume on the HFD though its pretty sensitive, I accidentally changed the numbers thinking it would give me more control, but I changed it from -25db to full blast, ouch.
ps: other than the settings in software to auto turn off etc, I don't think its possible to turn off the Hypex plate amps by any other means other than the rocker switch. I don't think there is an on/off on HFD.
I think the general rule of practise is to initially set up the board and a filters, without any speakers connected, once you have a filter in place you can connect speakers and play with the DSP and all settings. This way the board knows if its master or slave, source, input volume and all that. I think if you just plug in speakers and a source it could power through at full volume, or you accidentally bridge the connections when your not supposed to etc.
Careful with the volume on the HFD though its pretty sensitive, I accidentally changed the numbers thinking it would give me more control, but I changed it from -25db to full blast, ouch.
ps: other than the settings in software to auto turn off etc, I don't think its possible to turn off the Hypex plate amps by any other means other than the rocker switch. I don't think there is an on/off on HFD.
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Great to hear that! Next step is to fine tune the filter without disconnecting the speaker cables.
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Maybe consider that in the future, I believe it didn't come with "Mute" feature, which I need most. Or when I move to digital input source which is the best input source, for FA models, in stead of converting digital to analogue (via dac) and back to digital (via hypex) again .
My set up is very simple, one source from pre-amp to left/right sub, therefore, I set 3mins auto shutdown, from your previous advice! Tks again!
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I noticed that heats (or energy) were building up nearby the fan area while configuring the filter, and, somehow, the energy was triggered after I physically shut down the plate amp via the physical switch or rocket switch.
My speculation only.
For now, I set auto shutdown to 3mins.
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In fact it is quite different:
So working on HFD filters can be a live event. With a load on it. A real load if you like.
I just realized it two days ago!
Anyway, I will prefer to work the filter offline because both left and right sub-woofer are mater.
It's awful to have a 15 foot remote link cable across the living room.
Good morning/evening!
I need help to match the volume of the plate amp to my power amp. I guess I can get quick answer over here in stead of asking Hypex.
The gain of my power amp is 26dB.
If I set the "Volume on start" from the "Device settings" to -6dB. This number will appear on "volume control" from the "Main screen" and the sub-menu bar of the "filter design screen".
What gain should I enter under "Channel parameters" from the "filter design screen"?
Btw, I've not touch the value on the slider in the "Main screen", is this value different from the dB box next to it?
Thank you!
I need help to match the volume of the plate amp to my power amp. I guess I can get quick answer over here in stead of asking Hypex.
The gain of my power amp is 26dB.
If I set the "Volume on start" from the "Device settings" to -6dB. This number will appear on "volume control" from the "Main screen" and the sub-menu bar of the "filter design screen".
What gain should I enter under "Channel parameters" from the "filter design screen"?
Btw, I've not touch the value on the slider in the "Main screen", is this value different from the dB box next to it?
Thank you!
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My experience with the FA's in short:
+
- excellent amps (controlled low end, bit harder in the high mids then what I'm used to)
- good seperation of the signals/channels - left/center/right (probably cause of the low SNR and crosstalk),
- fast upload of the filter settings
- no clicks or cracks while switching between the Presets
- no problems with fast USB dis/connecting
- quiet when turned on and just sometimes a crack by turning them off
- they're getting hot, but still working fine
- many device setting options
-
- HFD is sometimes tricky to use, when I click on parameters it sometimes happen that their don't get fully selected, so I had to mark the value of frequency or gain settings again
- when I select filters in the frequency chart they often move slighty higher/lower so they change their frequency or gain
- I found no possibility to copy a 1 way setting to one channel of a 2 way amp or 2 channels of a 3 way to a 2 way model, would be nice if I want to upgrade my 2 way speaker to a 3 way i dont have to put in all filters again
- changing delay in live mode can cause errors, once a really loud noise came up and I had to shot down the amp to avoid damage (could be a individual case)
- I don't know exactly why, but I have the feeling that the DSP lacks of precision. If I run the same filter settings over my PC/RME for example and use it with an Hypex Amp it sounds much clearer and less then drifting away sometimes. Could this have something to do with the clocking? Does Hypex use Oversampling internally?
I also have the feeling that the hotter the Plateamp gets, the worse it gets
these are just my subjectiv 2 cents. I do not claim that everything corresponds to true facts.
+
- excellent amps (controlled low end, bit harder in the high mids then what I'm used to)
- good seperation of the signals/channels - left/center/right (probably cause of the low SNR and crosstalk),
- fast upload of the filter settings
- no clicks or cracks while switching between the Presets
- no problems with fast USB dis/connecting
- quiet when turned on and just sometimes a crack by turning them off
- they're getting hot, but still working fine
- many device setting options
-
- HFD is sometimes tricky to use, when I click on parameters it sometimes happen that their don't get fully selected, so I had to mark the value of frequency or gain settings again
- when I select filters in the frequency chart they often move slighty higher/lower so they change their frequency or gain
- I found no possibility to copy a 1 way setting to one channel of a 2 way amp or 2 channels of a 3 way to a 2 way model, would be nice if I want to upgrade my 2 way speaker to a 3 way i dont have to put in all filters again
- changing delay in live mode can cause errors, once a really loud noise came up and I had to shot down the amp to avoid damage (could be a individual case)
- I don't know exactly why, but I have the feeling that the DSP lacks of precision. If I run the same filter settings over my PC/RME for example and use it with an Hypex Amp it sounds much clearer and less then drifting away sometimes. Could this have something to do with the clocking? Does Hypex use Oversampling internally?
I also have the feeling that the hotter the Plateamp gets, the worse it gets
these are just my subjectiv 2 cents. I do not claim that everything corresponds to true facts.
Sorry I don't mean that the curve results are different. I measure the exact same frequency curves by using the HFD compared to other filters I use here, but I also can use them with oversampling and the DACs of my RME seems to be better, so listen to music differs in dynamic and clarity. I hate such descriptions but it is like a thin curtain in front of the music.
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Which RME DAC you got? ADI-2? If so it is one of the best DACS around. See here:
Review and Measurements of RME ADI-2 DAC | Audio Science Review (ASR) Forum
It also costs significantly more than any Fusion Amplifier. The DAC part of FA is probably 5-10% cost of the ADI-2.
BTW both ADI and FA have AKM chips, but chips are only a part of the story, as you can hear....
Review and Measurements of RME ADI-2 DAC | Audio Science Review (ASR) Forum
It also costs significantly more than any Fusion Amplifier. The DAC part of FA is probably 5-10% cost of the ADI-2.
BTW both ADI and FA have AKM chips, but chips are only a part of the story, as you can hear....
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I'm using a RME 802. So nothing extreme special, even if it got better specs:
Hypex
AD
SNR 109 dB
THD+N -100 dB
DA
SNR 111 dB
THD+N -102,5 dB
I use it via AES
RME 802
AD
SNR: 113 dB
THD+N: < -104 dB, < 0,00063 %
DA
SNR 115 dB
THD+N -104
shouldn't be a big difference, so maybe it has something to do with the stuff around like internal signal processing. Oversampling for filters in HFD and the ADC/DACs. Would be interesting to know how the designer works. I read something with an internal sampling rate between 44,1 kHz and 48 kHz?
Hypex
AD
SNR 109 dB
THD+N -100 dB
DA
SNR 111 dB
THD+N -102,5 dB
I use it via AES
RME 802
AD
SNR: 113 dB
THD+N: < -104 dB, < 0,00063 %
DA
SNR 115 dB
THD+N -104
shouldn't be a big difference, so maybe it has something to do with the stuff around like internal signal processing. Oversampling for filters in HFD and the ADC/DACs. Would be interesting to know how the designer works. I read something with an internal sampling rate between 44,1 kHz and 48 kHz?
RME 802 is an excellent interface. Any devices with SNR above 110dB and THD below -100dB are equal in that one area. See the ASR review how many other factors come into play for the overall picture (sound) . As a rule of thumb good DAC will cost 1k for two channels (more is the audiophilia
territory). For that money you can get 12 channels of FA amplification and D/A A/D conversion.
territory). For that money you can get 12 channels of FA amplification and D/A A/D conversion.
