r/ToobAmps

just snagged this off facebook marketplace for a nice deal! has anyone ever tried this with the Weber DT-10P? Weber claims they come close to the blue alnicos but i’m hesitant to believe that.

Guy I work with had a friend moving back in Arkansas,, was getting rid of stuff. He had the good sense to save this survivor 1947-1949? Montgomery Ward amp. When he told me, I thought maybe a Teal Stripe Bandit or something. When I saw this... I started to get a bunch of tickets (I'm a chef) but I wanted to see inside. I was not disappointed. Someone had put a three prong plug on it.... But I haven't looked actually inside. Thought you guys would be as tickled as I was. A few of you surely would know more about it than I (which isn't difficult). Yes we know. Just because it's rare doesn't make it valuable lol. Not even trying to sell this just showing you guys.

I have tested everything I can test with a multimeter and everything looks very close to spec. I re flowed the solder joints and everything that should have good ground connection, does, yet the Reverb signal is still somehow making its way to the output. It’s very faint, but it’s there and it’s bothering the hell out of me.

Could this be a bad pot? It tests ok.. but it doesn’t make sense that the reverb isn’t getting fully grounded.. anybody shed some light on this? Can pots fail in this manner?

Supersonic 60 schematic in photo..

So I've got these 4 amps and a bass head that I'm trying to decide what to do with. They are;

Ampeg V4 Bass head - function unknown, roadside rescue

Kalamazoo Bass 50 - functional but very quiet, roadside rescue

Line 6 Spider II - functional

Marshall Lead 12 - functional

Crate RFX15 - functional

The catch is i don't even play electric guitar, and haven't had a need to amp my acoustic in ~25 years other than to mess around.

I'm considering restoring the Ampeg and Kzoo. I would likely sell it give the Ampeg to a bass player i know. From what I've read the Kzoo is a terrible bass amp but it might sound nice using it for an acoustic guitar. The 2nd pic are the tubes in the Ampeg. If the glass has a mirrored spot does that mean it's shot? It also has a blown fuse so I haven't plugged it in at all.

I know that model of Marshall has regained some love in the community lately. It really just needs a good cleaning

The Line 6 and Crate, I'm not sure. The Crate is the only one I bought myself just for dicking around years ago.

I doubt i would get much in the way of trade in value for the 3 small amps. Kzoo and Ampeg, maybe, maybe not.

Help me make the right decision wise community

well nothing extraordinary has been done here.

any other mods are related to the preamp/phase inverter

1. plate voltage from pin3 to ground is 501.5
2. bias voltage from pin5 to ground is negative 47.9 when standby on and 46.8 when standby off
3. screen voltage from pin4 to ground is 502V

I will take out poweramp pcb to see what is going it, but it already had traces of burn under those 700ohms screen grid resistors. That's why I changed them for 1k

+ I added electrical fan but I just took wires from F1, add additional full wave rectifier to power the fan and it's working so that is not this

Stumbled upon my new favorite amp, a new handwired series Vox AC30. The combination of this amp with my strat is every thing I've been looking for when it comes to edge of breakup and bite with an adaptive feel. I was blown away.

Now, any advice on pedals that pair with Vox nicely? I've heard they're not always the best pedal platforms, any advice is appreciated!

I built this 5E8-A from the Mojotone amp kit and upon firing it up for the first time it’s got this terrible high pitch squeak. It changes some when I turn the treble control, but other eq/volume pots do nothing. I’m also not getting any sound from the input jacks when I plug something in. It’s just squeals.

I’ve checked continuity everywhere on the board near as I can tell. Also checked continuity on the tubes, though I don’t have a tube tester.

Not really sure how to troubleshoot from here. Any help would be greatly appreciated. Thanks!

EDIT: Thanks for the help everyone! Got it working great. It was indeed the output transformer that was wired backwards. I had wired it correctly according to the instructions so either the instructions had the colors wrong or the transformer was made incorrectly.

Hey All! I just picked up this original 1970’s Ampeg Model V-9 for $900. Im new to playing guitar and bass but was curious if I got a good deal…I can’t seem to find any for sale online. Everything works other than the reverb spring is loose and needs to reconnected it sounds like. I only picked it up since it seemed like a good deal but it’s massive and I don’t really need something this big. I can’t seem to find any for sale online marketplace or reverb so insight for reselling would be greatly appreciated since I’m hopefully going to fund my new setup with the money made. Thanks!

Hello all, after fixing a few stupid errors my Tiny Terror build is producing sound, yay.

Maybe most silly mistake was to use 100 ohm instead of 100 kohm for phase inverter anode resistors. It actually worked but the sound volume was very low...

Since I was aiming for a bit fuzzy drone sound I have used 120 kohm for all 12AX7 anode resistors, for more gain. It seems to work in the sense that at full gain it sounds quite fuzzy.

A few things I want to improve:

- its fairly noisy at high gain settings. Is there any obvous error in the routing of cables or such that anyone can spot?

- I would like more low end in the sound, its fairly bright sounding. Is there any components I can tweak to get in that direction?

- related to the previous point, the tone control is very subtle in general. I think my next step will be to add an effects loop so I can put an EQ pedal. This would maybe also solve the low end issue.

​

Hey everyone, I’d love some real‑world input from people who’ve owned or played these amps.

I’m choosing between the Blackstar HT‑1R MKIII combo and the HT‑5R MKIII combo, and my use case is a bit specific:

🎸 My playing situation

- Apartment volume: 80–82 dB max

- I play mostly hard rock, classic metal, 80s leads, and expressive stuff (Gary Moore, Slash, etc.)

- I want a small tube combo as a “toy” — something fun, alive, and inspiring

- I don’t need versatility, just tube feel

- I’ll sometimes push the amp with an OD pedal

- I also use delay and sometimes a looper, so an FX loop might matter

🎯 What I’m trying to figure out

At 80–82 dB, which amp gives me:

- More tube feel (sag, bloom, squish, alive under the fingers)

- More sustain when pushed with an OD

- Better pushed‑clean feel

- Better tight metal rhythm when needed

- More fun as a small “fling” amp

🥊 My dilemma

- I love the size and weight of the HT‑1R MKIII — it’s the perfect tiny tube toy.

- But the HT‑5R MKIII has the FX loop, more headroom, and a bigger power tube (12BH7).

- At my volume limit, the HT‑1R might actually compress more and feel more “tube‑alive,”

while the HT‑5R might stay tighter and cleaner.

❓ So I’m asking you all:

At 80–82 dB, which amp actually FEELS more like a tube amp?

And which one fits my style better?

I just finished final wiring of my from-scratch 5F1 mod. I was inspired by Uncle Doug's Vibrochamp project and by an earlier project in which he built a slide-in chassis. I was also very influenced by Erin Elam's (Youtube: elams1894) exquisite builds. This build uses solid state rectification to save a little room, but you can see it's still extremely cramped. Ran shielded wire where I could. High and low inputs sum at V1A (1/2 12AY7), then gain control to V1B (other 1/2), then tone stack to the 3rd gain stage at V3A (1/2 5751), then to output tube (6L6) and 12" speaker. V3B is the tremolo oscillator. V2 (12DW7) is reverb driver and recovery. Transformerless reverb. Also: choke, elevated heater, bias board and NFB. This weekend I power on and test voltages. If it doesn't blow up. Will post results.

I’m hearing some resonance like sounds, it’s more pronounced in reality than you can hear in the video. Could this be a microphonic tube rattling? I could hear 1 preamp tube and 1 master tube trough the speakers when tapped so probably going to replace them anyway.