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Messages - joecool85

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Honey Amp / Re: Power supply suggestions
« on: July 31, 2021, 09:14:30 PM »
Worrrd, I think I figured it out.

Much Appreciations!

Glad to hear it!

Honey Amp / Re: Thoughts on my new Honey Amp
« on: July 31, 2021, 09:13:33 PM »
" No power switch, but I can understand the omission, since this is supposed to be highly customizable. I have to pop the battery connectors to power down, but my enclosure choice makes that easy enough"

You could try a 3 prong switching jack that disconnects the battery ground when no cord is inserted.

Like pedals use.

Or just wire a switch inline with the battery - that's what I do.  I'm not a fan of onboard power switching, even when it is for a battery amp.

Regarding power output, it is an LM386 so it's about as loud as I could get it.  If you need more headphone volume, try using a lower resistance value for R10.  If you use 10 ohm it should just about blow your ear drums with any normal headphones - mine certainly did!

I'm planning another battery based kit, probably power amp only.  This one would be based on the PAM8302 which gives 2.5w and runs on a really low voltage of 5v nominal.  I've been playing with the board from Adafruit and it's significantly louder than any LM386 circuit I've used.

Amplifier Discussion / Re: My K-20X
« on: July 21, 2021, 03:13:16 PM »
That solid state amp does not require a load, you can simply turn off the speaker with a switch.

What I would do is connect the line out 10k resistor to the phones jack tip connection instead of the speaker.  Now the line out works when you are on speaker or when on phones.  Now the phones still work, but you can use the phones jack to kill the speaker.   Just plug an unwired plug into the phones jack, and that opens the speaker connection.But a switch works fine too.

Enzo, that's a pretty slick idea! I'm not going to re-wire mine since I rarely use the line out now anyway, but if I ever did another I would probably do it this way.

Honey Amp / Re: Power supply suggestions
« on: July 20, 2021, 10:26:25 AM »
Right on.

It's these details in certain facets of life, that somehow tend to escape me....

I just wasn't sure if there may have been something pre-designated on the board, for executing such a mod/addition.

Thank you!

Nothing on-board for this, just ground and positive input voltage.  Like Phil said, you would need to do this offboard like most pedals.

The Suhr Discovery Analog Delay has been released.  It looks to be an absolute beast of an analog device: built with old-school bucket-brigade IC tech, can store up to 127 presets, 17-2000ms delay range with digital readout, tap tempo input, multiple division modes (1/3, 1/4, 1/8, 1/16), and an array of controls.  Plus it is built here in the USA and looks to be made of sheet steel stamped into an approximation of a 1/32 scale Sherman tank.

This looks to be a very professional piece of kit, and comes with an appropriate price tag coming in with an MSRP of $549 USD.

The Newcomer's Forum / Re: Just joined...
« on: July 07, 2021, 11:00:56 AM »
Hello to everybody..Just joined the forum...I see some members are also members of another forum...anyway, will read some of the posts and eventually will get my feet wet.....and have fun....

Welcome aboard!  Feel free to share what gear you have and what type of electronics/amps/guitars etc you are into, we love to hear it!

Amplifier Discussion / Re: DIY solid state amp kits?
« on: July 06, 2021, 03:20:02 PM »
Wish I could post pictures. It would so help answer your questions. I have the original circuit diagram. I can't tell what the wattage is. I would hazard that the voltage rail is 12-15V.

You can post pictures :-)

Please measure the voltage with a DMM and let us know the result.

Amplifier Discussion / Re: DIY solid state amp kits?
« on: July 04, 2021, 09:01:43 PM »
I plan to keep the transformer from power supply,and the reverb. Everything else to be rebuilt.

To help with this, we will need to know the voltage on the transformer's output as well as roughly how many watts the original amp was suppose to be.

Honey Amp / Re: Power supply suggestions
« on: June 30, 2021, 10:03:27 AM »
....and, on that note.

Here is another Matt, with the exact opposite experience. Hahaha!

I couldn't find a decent enclosure, so I happened to find this Kleenex Box randomly, so.... Yep. I stuck it in a Kleenex Box.

For now, at least.

That is fantastic!  Does it sound okay in that box?

Amplifier Discussion / Re: Pedal Hiss?
« on: June 28, 2021, 10:44:26 AM »
If the Hiss is only present when using the converter then logic tells you there is a very good chance it IS the converter.

Be aware, If it's a Switchmode type DC/DC converter then it's a fair bet that is the source of the noise. In which case it's highly likely the converter is introducing hash as Smode setups are notorious for bleeding HiFeq crap into Audio gear.

If so you may be better off building a simple Analog regulator, i.e. using an LM7809 reg chip.

Also please consider that the explanations you give make sense to you because it's in front of you,,, we are not there so it's often hard to make out what exactly you mean.


I agree it is most likely the SMPS (switch mode power supply).  Sometimes you can add some filter caps to remove this noise - it depends how bad it is.  Worst case you can always go with an analog regulator like Phil mentioned - I just hate how inefficient they are.

Here are some good ideas for how to set up your filtering:

Amplifier Discussion / Re: DIY solid state amp kits?
« on: June 28, 2021, 10:31:28 AM »
I'd post pictures but is more trouble than it's worth. Anyway - the amp. Two channels,each with two inputs, volume control and tone. Then reverb, intensity and speed. Small reverb tank, and two eight inch speakers. power supply, pre amp and power amp all on  one board. Tried to get the board reprinted, but came back nothing like the original. So just looking to put something in there.

OK.  Are you wanting to keep any of the original amp?  PSU?  Power Amp?  Preamp?  Reverb?

Amplifier Discussion / Re: DIY solid state amp kits?
« on: June 23, 2021, 10:53:32 AM »
Hi all. Customer brought in an old Dynamic solid state which looks like its had one mod too many. Don't want to give up on it, so wondering if I can lay hands on a solid state amp kit? Ideas? Cheers

It just depends on which portion(s) are needing replacement.  If the power amp is the issue, there are TONS of possible options.  Preamp less so unless you build it yourself (there are quite a few potential circuits but not many sold as kits).  Is the power supply any good?  If so, what is the voltage provided?  Can you post some pictures of the control panel as well as the board(s) inside?

Honey Amp / Re: Power supply suggestions
« on: June 20, 2021, 08:13:35 PM »
Thanks everyone. I put the 10uf cap in and its doing great.  Love the gain sound actually. 
I put it in a 221x150x63.5mm case that I had from mouser. Just want to really thank everyone for this forum and this cool project.

Good job, Matt - very professional build!

Amplifier Discussion / Re: VOX Mini 3.. No speaker output
« on: June 15, 2021, 08:46:53 PM »
Here's a copy of the installation instructions but I must stress I don't make them anymore and don't have any!

Fantastic job, looks really professional!  No worries you don't make them anymore, still a very interesting share!

Amplifier Discussion / Re: VOX Mini 3.. No speaker output
« on: June 14, 2021, 04:21:48 PM »
I had forgotten all about these.  Midibob, if you don't mind sharing a picture of the board and maybe some info, I'd love to have it here on this forum!

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