Video on how to connect your RTR SSR Protection board in under 1 minute:
XRK Audio on Instagram: “How to connect your RTR SSR Speaker Protection Board in under a minute. 5 wires: amp output +ve and GND on left, speaker +ve and GND on…”
XRK Audio on Instagram: “How to connect your RTR SSR Speaker Protection Board in under a minute. 5 wires: amp output +ve and GND on left, speaker +ve and GND on…”
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Anecdote of the SSR relay in action. As I was messing around inside my VHEX+ amp, I accidentally made two wires on the output of one channel short out (just intermittent short). This burned out the negative rail fusible link in the small CRC between the PSU and the amp. So I had one rail on and other rail off totally unbalanced with 18vdc offset out to the left channel speaker. All this happened silently without me knowing what happened except seeing that the LED on the RTR SSR LED shutdown. No speaker pop or voice coil flying out. I did not discover the unbalanced DC offset until I investigated why the LED went out.
The shutdown happened instantly and without any drama. Just plain old went silent.
It really works and this is first time I really needed it as this amp has +/-53v rails.
The shutdown happened instantly and without any drama. Just plain old went silent.
It really works and this is first time I really needed it as this amp has +/-53v rails.
Yes, $40 was good insurance - that would have been a blown $76 driver. For my test rug to verify that these units are working properly I can simply disconnect one rail to see if the unbalanced shuts off the SSR.
I just got confirmation that all units have been shipped via DHL and I should receive in a few more days. Looking forward to sending these out so that everyone can start using them. They are so compact and easy to install, that there is no reason not to add them to almost any (non bridged) amp project where you need some DC or turn-on thump protection.
Alhough we have not tested them at 200w into 8ohms, the 100v rated MOSFETs are referenced to ground, so they never see anymore than 57v peak (+ or -), so should be safe for use in 200w amps as well. The +V supply for a 200w amp is typically +/-60v or higher. Rail voltage should not exceed 100v (absolute).
Alhough we have not tested them at 200w into 8ohms, the 100v rated MOSFETs are referenced to ground, so they never see anymore than 57v peak (+ or -), so should be safe for use in 200w amps as well. The +V supply for a 200w amp is typically +/-60v or higher. Rail voltage should not exceed 100v (absolute).
Yahoo!! Great news X 😀
I just purchased a couple more to add to my original order.
I’ve got a few projects past and present that I’ll feel a bit more comfortable about with these boards installed.
Thanks X, jhofland and JPS64 for making this happen!
Cheers,
Vunce
I just purchased a couple more to add to my original order.
I’ve got a few projects past and present that I’ll feel a bit more comfortable about with these boards installed.
Thanks X, jhofland and JPS64 for making this happen!
Cheers,
Vunce
Great news X! Thanks again everyone that worked on this design. Looking forward to using these!
Looking forward to them X, I should buy some more for anticipated projects for next year.
Good to see your inadvertive destructive test (or should that say non destructive test) was so successful.
I assume all was back to normal once you soldered in a new fusible link on the amp PSU cap board.
Good to see your inadvertive destructive test (or should that say non destructive test) was so successful.
I assume all was back to normal once you soldered in a new fusible link on the amp PSU cap board.
Tracking number says that the shipment of 119 SSR protect devices should be waiting for me by the time I get home today. 🙂
Hi folks, the tracking info I received was incorrect. The estimated date was Oct 18 but upon closer inspection of detailed tracking status, it looks like it just cleared HK. It took 3 days to go from Shenzhen China, and through HK across the river. Probably a few more days still before gettti g to me in the US.
Thanks for the update again X, another few days is neither here or there. Maybe some of the other forum members have completed amp builds just waiting for these boards, mine will be consumed for projects starting in the new year now.
Hi X,
Considering getting a pair from you. Have you test how much DC offset will trigger for protection on this board?
Considering getting a pair from you. Have you test how much DC offset will trigger for protection on this board?
On post 1, the specs say 1.5v DC offset threshold. Larger values will cause the switch to cut off earlier as there is an RC based filter that accumulates the DC offset to make sure that it’s not an AC transient.
Good news is real tracking info and text message from DHL saying the SSR’s are currently in the Wash DC area and out for delivery!
