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Messages - joecool85

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Amplifier Discussion / Re: Sears Transistor Part Numbers equivalents
« on: December 03, 2021, 07:05:29 PM »
Probably something common like 2N3055.

Use the Silvertone part number and go to the NTE web site and look up their cross.  It may not be exact, but it will tell you what NTE thinks the part needs to be.

If the amp is working, I'd leave them alone.  Transistors don't wear out like tubes do.

I second this.  Also, if you provide us with pictures it may help.

Honey Amp / Re: Got my kit!
« on: December 02, 2021, 11:54:19 AM »
Photos of the build—I have a couple of these Trader Joe's tins, which I kept because I like the shape and size, a little more room to maneuver inside than an Altoids tin. I used some nylon standoffs and screws to hold it off the metal, which works well enough.

Looks like the input jack and power jack aren't soldered yet, or just not enough solder?  Neat build though, I like the enclosure a lot!

Guitar News / Biggest selling amp this year - Mustang Micro!
« on: November 23, 2021, 08:56:58 PM »
According to and, the biggest selling amp of the year (in volume, not dollars profit) is the Mustang Micro.  Interestingly, DSP and solid state in general completely dominated the top 10.  Tube amplifiers only showed up in 4th, 5th, and 8th in the top 10 with 4th and 5th place being Orange's micro series amps that use tube preamp and solid state power amps.  Rock on SS gear!

Guitar News / EHX Howitzer - not sure how I missed this one!
« on: November 22, 2021, 11:42:40 AM »
Back in March, EHX released the 15w Howitzer pedal amp.  The difference with this and the older 5mm, 22 Cal, and 44 Magnum, is this has a full preamp in front!  3 Band EQ, normal and bright modes, gain, and master volume.  It also has an effects loop if you want to add some reverb or other inline effects.  Nice little class-d amp with reasonable preamp in front.
 I think that from the clips I've heard it sounds great clean and with light overdrive.  When you crank it into saturation it leaves a little to be desired.  With a street price currently at about $140 USD, it's still hard to beat though!

Positive Grid is releasing a wireless foot controller for their Spark amp.  Dubbed the Spark Control, the controller connects via bluetooth and allows the guitarist to "change presets, toggle effects, control backing tracks and a ton more".  Honestly, wireless control of an amp is something I never thought of, but now I don't know if I can live without!  What a great idea!

Price TBD

Amplifier Discussion / Re: Peavey Bandit as speaker cab
« on: November 18, 2021, 11:25:59 AM »
I've seen it done before where the speaker goes to a female 1/4" jack, the amp has a female 1/4" output jack, and then when using it as a combo you use a short 6" speaker cable to tie them together.  Want to power a different speaker?  Just unplug the speaker and plug a longer cable from the amp output into another cab.  Want to use the Bandit speaker (like you do) as a cab for another amp?  Just unplug both ends of the 6" speaker cable and plug a longer cable into the Bandit from the amp serving as a head.  Clean and simple.

Guitar News / Favorite pedals of 2021 - go vote at
« on: November 16, 2021, 09:39:32 PM »
Vote for your favorite effects pedal:

And don't forget to vote for your favorite modelling pedal as well:

** is not in any way affiliated with, I just like their content and frequently use them as a news source.**

Peavey has announced updates to it's Vypyr series of amplifiers.  Now they have more amp models, more effects, and a reworked semi-open cab to "improve volume and tone".  I'm not normally big on the "a billion options in one amp" units, but I have to say, I'd like to sit down and play with one of these.

Pricing is $179, $349, and $499 for the 20w X1, 40w X2, and 100w X3 respectively.

Late this summer, Victory released it's new amp head called "The Kraken".  It uses a couple military spec tubes for preamp duties feeding into a 180w class D solid state power amp section.  Boasting two channels, reverb, 3 band EQ, footswitchable channels, effects loop, and simulated speaker outputs - this little guy has it all...if you can cough up a cool $999 USD.

Amplifier Discussion / Re: 80's Era Roland JC50 blows internal fuses
« on: November 07, 2021, 08:47:29 PM »
I really appreciate all the suggestions from everyone. I popped over to a local vintage guitar shop in town on the off chance that they would have a similar headphone jack as a spare part. They had something very similar to I bought it for $7. As it turns out, the switching inside the jack is identical to the original. Even though I rang out all the connections on the old one, and everything seemed to be working, I went ahead and wired up the new jack and installed it. It ended up working perfectly. I'm guessing that perhaps the contacts internally were corroded, which may have loaded the circuit more than expected but that is a wild guess. Either way, I'm happy to say that the new jack worked.  :)

Good job getting it fixed up!

I love using KiCad, works great doesn't it?  Let us know how the SMD practice goes, I've yet to try it myself.   :dbtu:

Also, I've been thinking about trying some PT2399 reverb or delay circuits.  I'll be interested to see how this comes out.

Guitar News / Bogner Ecstasy Mini - The mini solid state amp that rips
« on: November 04, 2021, 02:04:29 PM »
Bogner has done it again, this time on a mini level.  The Ecstasy Mini is an absolute face melter.  Street price is $329 USD.

Honey Amp / LM386 specs - max wattages etc
« on: November 02, 2021, 10:49:11 AM »
All data below based on LM386N-4, 8 pin DIP with 1.25w package dissipation, and max PSU of 22v

Current datasheet from TI:

Maximum power without heatsink, sorted by speaker output in ohms:

4 ohms (Figure 7 on datasheet) = Max 0.35w @ 6v (clean 0.25w) [Min 0.35w @ 6v]
* Need heatsink above 11v
* PSU recommendation: 7.2v NIMH or 7.4v Li-ion

8 ohms (Figure 8 on datasheet) = Max 0.85w @ 12v (clean 0.5w) [Min 0.3w @ 6v]
* Need heatsink above 14v
* PSU recommendation: 9.6v NIMH or 11.1v Li-ion

16 ohms (Figure 9 on datasheet) = Max 1.6w @ 16v (clean 1.2w) [Min 0.2w @ 6v]
* No heatsink required
* PSU recommendation: 11.1v Li-ion, 12v SLA or 14.4v auto power

Amplifier Discussion / Re: 80's Era Roland JC50 blows internal fuses
« on: October 27, 2021, 02:03:37 PM »
Plugging in mono 1/4" plug into stereo headphone jack expecting stereo plug?  That could cause shorts.

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