Ready-to-Run (RTR) SSR DC Speaker Protection and Delay GB

[xrk971]

Yes, it’s free floating (supported by the stiffness of the wires)
on one of my plank amps. Some people don’t like how messy or “unfinished” that looks though.

 

[xrk971]

Stuffing all the goody bags with the bonus quick shutdown PCBs (2), Molex KK’s (2) and crimp sockets (4), BC546’s (4), and nylon standoffs (8). Man, it takes some concentration to count and stuff. Now I know how a pharmacist feels filling bottles with pills all day long.

It’s no fun, I’ll tell you that...

Getting ready to package the rest of the orders. Hopefully they will all go out today.

Thanks for your patience.

Doesn’t look like much, but the connectors, transistors, and standoffs are a significant cost compared to the main board.

 

[Joel Wesseling]

Can I please get 2 boards in the group buy? If yes, do I just add 2 in my Etsy Basket, save for later?

 

[xrk971]

They are ready to ship now. GB is over - just order from my shop. The GB folks enjoyed a slightly lower price from ordering early.

 

[xrk971]

I just built the and tested the bonus instant shutoff controller board. I included the two BC546 transistors with each board. You just have to round up a couple do resistors, a small cap (4.7uF), two 1N400x diodes and an LED. Note that D1 and D2 should not be populated unless you are using a separate transformer.

I made a video of the test of the circuit here (using the PSU from the All Cee’s for the Xmas amp):
Testing Gen2 RTR SSR Instant Shutoff Bonus Board - YouTube

 

[gary s]

Thanks for the video X and I received an Etsy notification about shipping of my order, you can relax now for a day or so.

 

[xrk971]

I tidied up the plank Xmas amp (TDA7293) and connected actual speakers and source and listening now. The Gen2 SSRs work great. Power cycled on/off and absolutely silent. No turn on or turn off noise audible from speakers. You can’t tell that you turned the amp on or off unless source has music playing.

 

[pinkfloyd4ever]

Nice!

Side question: What are your blue test connectors that the speaker cables are connected to?

 

[xrk971]

Those are 14-16ga “Bullet” female crimp connectors. It turns out that banana plug male fits it perfectly.

Hilitchi 50Pcs 16-14 Gauge Insulated Male / 50Pcs Female Bullet Quick Splice Wire Terminals Wire Crimp Connectors Set (Total 100Pcs) https://www.amazon.com/dp/B01D9D0TGE/ref=cm_sw_r_cp_apip_yFqJ83mDI2jsM

 

[mpa]

Thanks for the tip about the little mini psu for the Gen 1 boards x, I built some using bits that I had here and now finally have silent switch off. No more worries about damaging compression drivers

 

[xrk971]

That was very clever to deadbug P2P it across the standard 4-pin puck style bridge (althoug a 35A bridge is a bit overkill for a 20mA load!). You have your diodes already and only needed the cap and bleeder. Having and LED and resistor for the LED is nice but unessary. Nice!

That can be easily integrated into the female Faston connectors in the future. I like it!

 

[legis31]

Hi, X..

The RTR SSR Speaker Protection Boards landed in my mail box today along with some other goodies!
The perfect cure for the containment / hibernation blues. Thank you sir for making my day!

 

[GKTAUDIO]

My 2 boards arrived today as well - thank you!

 

[xrk971]

Great news. Let me know how they work out.

 

[thompsontechs]

Mine arrived as well...


JT

 

[ahtllc]

Mine just arrived also. Thanks.

 

[pinkfloyd4ever]

Got mine yesterday too. That project is a couple lines down the list, so it may be awhile before I actually get to the point of hooking them up, but they look really nice and were well packaged. Thanks again X

 

[xrk971]

It looks like the US mail is moving normally again. Glad you guys are receiving them and the packaging is working out. Thanks for letting me know you got them.

 

[gary s]

Lets see if that is true for the international mail outs.

 

[wtnh]

Mine arrived yesterday. Thanks, X!