Admark AD60 or AD442 new Subwoofer AMPs for WSX

A similar discussion going on in this thread. I just posted some details comparing the 442 and the 60
  https://forum.speakerplans.com/topic108284_post1074702.html#1074702
Last night I was running 2x WSX loaded with RCF LF18X451 on a Powersoft K20. Didn't really see any clipping with +4db gain on the bass on the driverack K20 was on max vol DSP bypassed I think I had a 3800W limit set per channel and a little bit of limit on the driverack to protect them. Handles over the driver enclosure were still really warm a few hours after the gig.
  I was thinking about what you were saying about adding an aluminium plate for cooling. I have heard about someone doing this with WSX but those handles are very useful (even if I had to flip mine around to make them fit around the magnet)!
  However There could be some scope for adding one between the handles. If you do you add one you should design it to make contact with the magnet, for example, with another piece of alloy bolted on the inside that sits at the same angle as the speakers and use thermal silicone heat pads to make contact, leave a hole in the middle if your drivers have one.
  Even a small water cooling system could be good if it's well built, very risky in case of leaks but potentially you could just have a dc plug socket in the speaker hatch where you plug in a small power supply. It would be an interesting build. Water cooled subs!
  Perhaps consider the LF18X451 I've put 4 of them through their paces and they are proving to be a good investment. With potentially large x-max I removed some wood around the baffle because the LF18X451 seemed to be of slightly larger diameter. I didn't want to risk the surround touching the baffle. Double check this on yours before you fit your drivers. I used a feinn tool to remove around 2 or 3mm all the way around. Why did you choose Oberton? I've got no experience with them.



Edited by izzzzzz6 - 15 July 2024 at 5:23am

Edited by v.mxhan - 23 March 2025 at 2:35am

We are usinf ad442 on subs at 4 ohm per channel for over a year now. Zero problems and tons of power. Done festiivals where they were on full blast for 5-6 days 24/7. 

I don't understand why the AD442 cant deliver more power and 2ohm than at 4ohm. Surely GaN should mean that they can deliver more current than similar amp without GaN and therefore be capable of high power at low impedance.

Probably power supply limitation. AD60 is also not that much more at 2 ohm.

Morin has introduced a K55