You already own the tank. Buy the sonics.
Most plants do not need another vessel. They have perfectly good tanks — a rinse bath, a process tank, a plating line, a soak tank that has been there for fifteen years — and what they lack is ultrasonics. Naked Sonics is that hardware sold on its own: generators, immersible arrays and rod resonators, without a tank wrapped around them.
The same components that go into every machine we build. Sold separately, retrofitted into yours.
VarioSonic G4
SonoDrive G5
Immersible transducers
Solo 360 rodsPick the part you need
Everything here is sold on its own — retrofitted into a tank you already own, as parts for a system you are building, or as replacements for a machine that has gone quiet. Start with what goes in the tank; the generator follows from it.
Two generators
Everything here runs on one of these two. The generator is chosen by the transducer — never the other way round.
VarioSonic G4
Multi-frequency. Single or dual frequency · 28/45, 40/80, 80/130, 40/130 kHz · 800 to 1,500 W dual, higher single
Pick a model →
SonoDrive G5
Fixed frequency, matched to the rod for power output — 25 kHz standard, 40 kHz optional
The SonoDrive →
Replacing transducers in a tank you already own? Read this firstOpen
Elements are sold on their own. Building a plate, specifying an OEM machine, or wanting elements and nothing else is a normal order, and there is no requirement to buy a generator with them.
Re-elementing an array you already own is the case that needs care. When an immersible box or a bonded array has gone deaf, replace the whole block rather than the one element that failed. Transducers age together — output falls away, the resonant point drifts and the impedance climbs. Put one new element into an aged set and the drive cannot tune to both: it hunts, the new element takes more than its share of the power, and it fails early. Where the generator is the same age as the block it was tuned for, budget for both. Tell us what is in the tank now and roughly when it went in, and we will tell you which half actually needs replacing before you spend anything.
And what they drive
Start here. What goes in the tank decides the drive, and each of these is quoted with the generator that matches it.
Immersible transducers
Custom built — your dimensions, SS304 or SS316L, your frequency, your fixing points. Driven by the VarioSonic G4
Specify a box →
BLT transducers — single frequency
The bolted element on its own, one tuned note — 28, 40, 68, 80 and 130 kHz. For transducer plates, OEM builds and repairs. Driven by the VarioSonic G4
Single-frequency elements →
BLT transducers — dual frequency
One element, two tuned notes, switched at the generator — 25/45, 28/68, 40/80, 40/130 and 80/130 kHz. Coarse pass and finish pass in the one tank
Dual-frequency elements →
Solo 360 rod resonators
Twelve lengths, 340 to 1327 mm · 800 to 1,500 W · 25 or 40 kHz. Driven by the SonoDrive G5
Pick a length →
They do not cross over. The G4 is a multi-frequency generator for immersibles and plates. Rod resonators are fixed-frequency and run on the matched SonoDrive G5. Fitting one to the other does not work — if you are unsure which system your tank wants, send the dimensions and the duty and we will tell you.
What a retrofit looks like
A working plating line. The tanks were not built for ultrasonics: the boxes hang on the rim by their brackets, the cable runs back along the top, and nothing was cut, drilled or re-plumbed to fit them. The line never came apart.
How a line is retrofitted, tank by tank →
A tank that already has ultrasonics and has gone quiet is the same conversation. A bonded array that has stopped cavitating can usually be re-elemented rather than the vessel scrapped.
When the machine is the wrong purchase
If you are converting a tank you already own, start here: adding ultrasonics to an existing tank →
You have a good tank that is not ultrasonic
Stainless, sound, the right size, already plumbed, already heated. Replacing it to gain ultrasonics is buying a tank you already have. A rod or an immersible array drops in and changes what it is.
You have an ultrasonic tank that has gone deaf
Bonded transducers fail. Generators drift off resonance and nobody notices until parts stop coming clean. Transducers and generators are replaceable line items — not a reason to scrap the machine.
You are building something we do not make
A process line, an OEM machine, a one-off rig. You need the ultrasonic engine and the engineering to size it — not a catalogue product bent to fit.
And one where it is the wrong call
If the vessel is near the end of its life, retrofitting it is money into a tank you will replace. We will tell you that rather than sell you the hardware.
Rod or immersible?
| Rod resonator | Immersible array | |
|---|---|---|
| Field shape | 360° along the whole immersed length — fills the vessel | Directional from the array face — aimed where the work sits |
| Best for | Deep tanks, cylindrical work, brutal soil loads, awkward vessels | Rectangular tanks, defined work zones, high power density |
| Frequency | Fixed per rod — 25 kHz standard, 40 kHz optional | Fixed single — 28, 40, 68, 80 or 130 kHz. Or a selectable pair — 28/45, 40/80, 80/130 or 40/130 kHz |
| Fitting | Horizontal or vertical, through the wall or from the rim — and out again in minutes | Hung, floor-stood or bulkhead-mounted |
| Room taken | Very little — several rods fit where one plate would go, so more power goes into the same tank | Takes a face of the tank |
| Fine finishing work | Not its strength — robust deep-field cleaning | Better for finer, controlled work |
The engineering limit: rod resonators are single-frequency devices, and their strength is robust, even, deep-field cleaning rather than high-frequency finesse. Precision multi-frequency work belongs on bonded and immersible platforms. The rod owns depth and durability.
All specifications — incl. dimensions, ultrasonic power and volume — are confirmed at quotation.
Five things and a photo
That is genuinely all we need to tell you whether a retrofit will work — and whether it is worth doing.
- Tank dimensions — length, width and working depth.
- Where it sits — open shop floor, in a line, or inside a process bath.
- Vessel material and remaining life — there is no point retrofitting a tank that is nearly through.
- Heating and filtration already present — what you already have, we do not need to sell you.
- Power available at the wall — the constraint on how much ultrasonic power you can actually run.
Matching the drive to the array
A generator is tuned to the array it drives, not to a frequency on a label. What has to line up: the frequency the generator tracks, the total capacitance of the array wired to it, the impedance and phase that array presents once it is in the liquid, and the voltage across the group under load. Where we supply a complete system we specify those against each other and commission the two as one. Elements bought on their own are a different thing and a normal order — the matching is then yours or your builder’s to get right, and we will tell you what the elements need.
What goes wrong when they are not matched
A new generator will not rescue an old set. Transducers age — output falls away, the resonant point drifts and the impedance climbs — so an older array is no longer the load a new drive was tuned for. A set of mixed ages is worse again: the weakest element pulls the rest off tune and the drive spends its power hunting for a resonance that has moved. What you get is a generator running hot or dropping out, a bath cleaning unevenly, and transducers failing earlier than they should — and from the outside there is no way to tell which end is at fault, so you end up replacing both anyway.
What we can and cannot stand behind. Where we supply the generator and the transducers together, they are matched and commissioned as a system and warranted as one. Elements supplied on their own go onto a drive we have not characterised, so we cannot warrant what the tank will do with them. That is the limit of what we can know, not a refusal to sell. Tell us what the drive is and roughly when it went in, and we will say where you stand before you spend anything.
Send the five
Scope a retrofit
Send the five feasibility details and a photo of the tank. The answer comes back fast — including if the answer is no.