Coil whine is not uncommon with switching power supplies and I imagine switching amps too. When I was servicing switch mode power supplies for a occupation I would replace the coils and that solved the issue.I have 2 FA502 Plate Amps in use for three days now.
One of them has a really annoying bug (the Master Unit in my configuration)
If I turn them on via the remote (the Amps are in Low Power sleeping mode) after a longer period, the master units emits a very loud coil whine.
The Sound is not coming from the speakers, its the amplifier itself which generates the noise.
The only thing which helps is to plugg the power, wait till the caps run out of power, then the Amp starts regulary.
Have have two FA503 plate amps for several years now and they make no noise at all.I have 2 FA502 Plate Amps...
One of them has a really annoying bug (the Master Unit in my configuration)
If I turn them on via the remote (the Amps are in Low Power sleeping mode) after a longer period, the master units emits a very loud coil whine.
You follow the proper power-up sequence prescribed in the manual?turn them off via the physical button, then turn them on again after some hours the slave unit neither detects a signal, nor is it recognised by the hypex filter design software.
Anyone users have any complaints re: fans on the FA502 / FA503 units? I'm brainstorming an active 3-way build and fan noise could be a deal breaker.
Second, any updates on a more powerful DSP module with FIR capabilities yet? I can live without this it's just a nice to have later on thing...
These are maybe speakers but not loudspeakers, lol! (Just kidding, but every joke's half is true.)Wow, what speakers?
The Hypex probably has a lower noise level, but the specs are given differently for these two amps.which of these amps have the lowest noise level. I am sitting 60 cm/2 feet from the speakers and i want to chose the amp with the lowest noise from the tweeters. see the specs attached
FIR FILTER OPTION RELEASE
The FIR filter option is now available in HFD 5.0 and can be easily downloaded from our product page on the web shop or via the link below. This option can be used on your Fusion Amp from version 03xx, except for the FA502 and FA503 which can be used from version 05xx. To access the new FIR capabilities, update your Fusion Amp firmware to version V5.7.