Steel String Singer #005 build

[beasleybodyshop]

Now that you mention it, I did a little demo video of my completed #005 yesterday and posted it on youtube:

https://youtu.be/2MEt9pbGTGA?si=rVB8cRSsJoguuGXZ

There are lots of great clean and clean-ish tones to be had in this circuit. It's one of my favorite amps.

[captaincoconut]

Now that you mention it, I did a little demo video of my completed #005 yesterday and posted it on youtube:

https://youtu.be/2MEt9pbGTGA?si=rVB8cRSsJoguuGXZ

There are lots of great clean and clean-ish tones to be had in this circuit. It's one of my favorite amps.

Man, that sounds great! Are you running 6L6 or 6CA7 still?

[beasleybodyshop]

Still running 6CA7. My only gripe is there is a very low, ambient hum when I turn it on. I think maybe OT orientation needs to change a little but nothing terrible. Someone mentioned an issue where the master volume didn't start doing something until you turned it up a bit and then it suddenly sprang into action - mine does this too but I just chalked it up to a bad potentiometer. Really looking forward to seeing how yours turns out. Feel free to ping me for specifics. Happy to go over anything.

[captaincoconut]

Let's go...

[captaincoconut]

Wired the heaters tonight, will do power tube sockets and power supply next...

[Roe]

shorten those long black heater wires a little for reduced hum

[captaincoconut]

shorten those long black heater wires a little for reduced hum

Thanks for the hint

[captaincoconut]

The headshell is nearly finished! Just have to tolex the backpanel and add the last aluminium trim piece.

[captaincoconut]

A question for all regarding the footswitch wiring: as we can see on the original #005 there is a 6 pin Neutrik XLR socket installed. We can assume that this once was the Switchcraft C6F as there's clearly a hole for it...



If I'd follow the traditional wiring scheme for the footswitch as shown here and wire it for three relays (FET, PAB, REVERB) I would already need 6 pins (three for the relays, three for the LEDs). Which leaves me with a missing pin for ground. However, the Switchcraft C6F has an additional pin for the casing - is it okay to ground the relays/LEDs through the socket and therefore through the chassis? I'm asking because it seems to me that HAD isolated the relay ground from the chassis, most likely for noise prevention.

Thanks!

[martin manning]

See in the D Files section, ODS Eyelet Boards TAG pdf, last page. You can get three functions using a 5-pin DIN if you use one pin for a common DC voltage for the LED's and put the current limiting resistors in the foot switch.

[captaincoconut]

See in the D Files section, ODS Eyelet Boards TAG pdf, last page. You can get three functions using a 5-pin DIN if you use one pin for a common DC voltage for the LED's and put the current limiting resistors in the foot switch.

Thanks, looks easy enough. But it still leaves me with the question if grounding through the socket would be okay with regards to noise? I mean, if we assume that HAD actually used a 6 pin socket (we can't really say because it was replaced with a 6 pin Neutrik socket), there is really no other way, right? Thing is...the DC side after the voltage regulator is already grounded to the chassis, so why not use the socket and chassis as a return path anyway?

[martin manning]

Using the setup I linked you can do the relay/footswitch ground as HAD did on the ODS, at the relay power supply. You could ground at the foot switch jack, but it seems HAD cared enough about that to run a long wire all the way back to the opposite corner of the chassis.

[captaincoconut]

Using the setup I linked you can do the relay/footswitch ground as HAD did on the ODS, at the relay power supply. You could ground at the foot switch jack, but it seems HAD cared enough about that to run a long wire all the way back to the opposite corner of the chassis.

Thank you, I'll think about it for a while.

[dbharris]

Depending on the cable you use to connect amp to footswitch, the case ground (shield) may not run as a conductor through the cable. Meaning you could lose ground reference inside the footswitch. If you have your cable already, you could do continuity tests with your DMM.

-Dan

[captaincoconut]

Depending on the cable you use to connect amp to footswitch, the case ground (shield) may not run as a conductor through the cable. Meaning you could lose ground reference inside the footswitch. If you have your cable already, you could do continuity tests with your DMM.

-Dan

I would have to make my own cable anyway as it's tough to find readily available 6 pin XLR cables without paying stupid amounts of money. So that's not really a concern for me.