Long known for their high gain tube amplifiers, Soldano has decided to dip their toe into the solid state arena with their new amp, the SLO-Mini 30. The SLO-Mini 30 is a small 30w head, with two channels and an absurd amount of gain. Priced at $249 USD it is also (by far) the least expensive Soldano unit. Well worth watching the video!
Dang! I like it! And, that guy makes great guitar-player faces.
Now, who's got the schematic? :) :)
The overdrive channel is where it's at.
Yeah that's from the same company that released the mini Friedman BE, the mini Bogner and the mini Diezel VH. Soldano just probably tweaked the voicing.
I am also curious about its preamp. The power amp is 100% some chip.
Yep - I didn't get the name of the company who did all of them, but was told something similar about the power amps, and that each model was designed in partnership with each respective company, so there are differences in the preamps that could be interesting to study. Have not seen any schematics for any of them tho.
Quote from: willpirkle on June 13, 2022, 10:08:21 PMYep - I didn't get the name of the company who did all of them, but was told something similar about the power amps, and that each model was designed in partnership with each respective company, so there are differences in the preamps that could be interesting to study. Have not seen any schematics for any of them tho.
It is the parent company, Boutique Amps Distribution. http://boutiqueampsdistribution.com/
They own a ton of companies now:
Interesting that it uses an external power supply. The jack on the back looks like the same one used on pedals.
Quote from: Loudthud on June 15, 2022, 05:05:14 AMInteresting that it uses an external power supply. The jack on the back looks like the same one used on pedals.
This is becoming quite common on small amps and heads. The Yamaha THR series does this, as does Orange Micro Terrors, Hughes & Kettner "Spirit" amps, Vox MV50 series and more.
I was thinking it's really a great idea for novice amp builders because they don't have to deal with Mains wiring. With one of those switchmode supplies that are common now, they don't even have to worry about Mains Voltage. They work on anything from 90 to 250 VAC. Just get the power cord that will work in your country.
Just got a msg from my local shop. The amp I ordered has arrived and the main guy there, who is a diehard tube amp guy, says it is amazing and he has ordered one for himself. You can't get a bigger endorsement than that.
The Soldano SLO Mini 30 runs off of a 24V 2A switchmode brick like you might find on a laptop computer. Inside there are three PCBs. One runs across the back where the input DC jack, the effects loop jacks and the speaker jacks are mounted. There are a couple of diodes and an LM7809 TO-220 Voltage regulator without a heatsink. All connections are made with flying leads through 2 or 3 pin connectors.
The main PCB is through-hole technology with the input jack, the pots and the two mini-toggle switches soldered to it. The power switch is mounted to the front panel with leads back to the back PCB. The Class D power amp is a small PCB mounted to the main PCB with standoffs. The power amp PCB is all surface mount components with leads soldered to it. The power amp chip is TPA3106D1, there is also a quad TLO74 opamp and several small transistors and surface mount diodes. The power amp PCB is branded PM30 (SYNERGY)_V03. The preamp has three TLO72 opamps and a chip, TC1044S that converts +9V to -9V to run the opamps.
The Effects loop Send gets it's signal from the preamp output, the Return goes straight to the input of the Power Amp Board. There is roughly 12V on both sides of the Speaker output with no signal. The speaker output is rated for 8 or 16 Ohm loads only.
First of all, all the pots go to 11. Here's the lineup:
Master: B25K wiper goes straight to the Send jack.