Ironic timing, but I'm actually playing with an attenuator for my K-20X.  I could have altered the circuit (more) but decided to just try an attenuator.  In my case I am using a 25ohm resistor in series with the positive lead and an 11ohm resistor in parallel with the speaker.  Since I have a 4ohm speaker, this will have the amp seeing 8ohms.  Overall output will be dropped to about 0.6w rather than the full 20w.  Switching will be done by an on/on spdt switch.  I have the parts, once I get around to actually doing it, I'll be sure to update my K-20X thread.

The K-20X is bothersome in that I need to use it on volume 2-3 at most and it's very particular about where I set it.  This should allow me to use around 5 on the volume at home and be more finite with adjustment.  Again, I could have done this on the preamp side, but this was easier for me and lets me have a feature currently seen on the "big boy" new amps :-)

Blackstar has decided to bring the volume up and release 100w versions of the Debut 50R.  That's right, not one but two versions.  The Debut 100R comes in 1x12 and 2x12 configurations.  Honestly, the 100R 1x12 is basically identical to the 50R except it has double the wattage.  This isn't really that helpful though as to get twice as loud requires 10x the wattage.  Bringing the power up to 100w really only adds about 3db of volume overall.  If you want this amp in a 1x12, just buy the 50R and save $100.

The big story here is the 2x12.  If you have been itching for that huge 2x12 sound, you can finally have it!  The bigger story, it's only an additional $20 over the 1x12 variant!

Sweetwater is currently selling the 1x12 100R for $379 USD and the 2x12 100R for $399 USD.  For reference, the 50R 1x12 is currently selling for $279 USD.

https://www.gearnews.com/blackstar-debut-100r-perfect-balance-for-pedals/

Laney is claiming that the new Lionheart and Ironheart Loudpedals provide 60 watts of power in a solid state pedalboard amp platform.  This certainly isn't a new concept as similar ideas have been done multiple times by many companies.  That said, this one sounds legit and I love the layout of the controls.  I also really appreciate that they include a reverb built in as this is super handy and cleans up the pedalboard nicely by not requiring an additional unit.

I do wonder how similar the circuitry is to the Laney LF60 combo amp that sells for $449 and has a 12" speaker.  The controls are almost identical and the sound seems pretty similar to me.

Pricing is listed as 399 GBP.  Sweetwater is currently selling them in the US for $499 USD.

https://www.musicradar.com/news/laney-martin-miller-tom-quayle-ironheart-lionheart-loudpedal-guitar-amplifiers

Pin 7 is unused on the Honey Amp.  Most times it is completely unnecessary unless you have a really dirty power supply.  I haven't had any issues with any of my prototype of production honey amps not using pin 7.

Nice job, it looks great!

I've currently run out of kits and I'm up in the air on ordering more or not.

Quote from: RookieRecurve on June 25, 2024, 12:54:31 AMHopefully this isn't a zombie post.  You said you burnt up components using a laptop charger.  Was it too much voltage, or was it an issue with current?

Regarding the excess gain from the 1-8 jumper, what cap did you use?  I might dabble with this option once I get my kit, and put it together.

Most laptop chargers are 19v or 20v, either is way too much for this kit.  Max voltage is 16v.  Recommended voltages depend on what the speaker load is.

4 ohm : 6-9v DC
8 ohm : 6-12v DC
16 ohm : 6-16v DC


This yields this power output:

4 ohms = Max 0.35w (clean 0.25w) @ 6v supply, Min 0.35w @ 6v
8 ohms = Max 0.85w (clean 0.5w) @ 12v supply, Min 0.3w @ 6v
16 ohms = Max 1.6w (clean 1.2w) @ 16v supply, Min 0.2w @ 6v

Last month Boss released the new Gen 3 version of the ever-popular Katana amp series.  Consisting of general model updates, this seems like a decent amp still but nothing to toss your old Gen 2 model out for.

https://www.gearnews.com/boss-katana-gen-3-amp-series-enhanced-tube-logic-tone/

Quote from: Miyagi_83 on June 12, 2024, 04:57:39 AMI added another gain stage and tweaked it again. Here's how it sounds now

https://m.soundcloud.com/user-996907905/joe_davisson_preamp_modded_bc3

EDIT: Again, I'd like to apologize for the sloppy playing.

Sounds great!  Thanks for sharing!

Without hearing it, I'm going to say that it is most likely normal for this to happen.  Channel switching can certainly cause noises on certain amps.

For those looking for the link to the schematic: https://www.diystompboxes.com/analogalchemy/sch/vulcan.html

I'm curious what the diodes are for between the stages though.  Not sure I've seen that before.

Looks interesting. I'd love to hear some clips!

Quote from: saturated on May 05, 2024, 11:10:45 PMAnyhow I found that if you are playing a song off YouTube on your phone like trying to learn it while you play...if you hold it up to your pickups it will play through your amp

     

I might need to try this...

Quote from: saturated on April 09, 2024, 05:20:43 AMThank you sir I am glad I did not have to touch any power tubes...in the back of my mind I had heard about tube biasing and was dreading having to do something like that.  But I looked it up and evidently preamp tubes are just plug and play...?

The two 12ax7 I switched positions were in there really tight.  To avoid broken glass and blood I put on a leather work glove.

I really appreciate everyone's help with this idk what we did but it's sounding really crazy nice it still has a little hum at low volume but I ain't touching it right now.

A little hum at low volume may well be normal for this amp.  It certainly is for others.

I recommend making sure that the input jack is clean and connected well to both line and ground.  If not, it could be only letting some signal through causing these issues.

Boss has expanded it's famous Katana line of amps to include a new headphone amp that fits easily into your pants pocket, enter the Katana:Go.  This is an interesting take on the headphone amp market and something that stands along with Fender's Mustang Micro amplifier in that it is a digital amplifier with multiple models, effects, and features.  One of the neat features with the Katana:Go is the app that you can use in Android or iOS to modify settings and saved presets.  You can also use this little guy as a USB C recording interface.

MSRP is $119 USD and they are available now.

https://www.musicradar.com/news/boss-katana-go-amp