
fretless
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Dear Sandy,
Aria Sinsonido
Just found your circuit board notes re above bass and would welcome your comments on following since my understanding of electrics is just above zero!
I have a fretless early version Sinsonido bought new many years ago and all working fine - which I fitted with Thomastik - Ingfeld phosphor bronze strings - the ones developed for Rick Turners range of Renaissance basses. The aria is my go to fretless on lots of gigs.
I've been keeping an eye out for a spare at a sane price and one has just arrived. It appears to be a later model without the headphone output ( which I never use anyway ) and the two controls on the bottom of the body not the top. It all works (tone ok, balance across strings ok) except the output is probably a third of the volume to my "old" Sinsonido and not sufficient to gig.
Pots both work, jack cleaned with alcohol but not sufficient output ....
Indications are the "gain" element of the circuit is duff and any pointers from you to resolve will be much appreciated.
Fretless ( sunny Plymouth )
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Dear Sandy,
Lots going on in life, but I have now some time to sort out Sinsonido.
I have ordered the Gandalf Onboard Guitar Preamp and started to order components to make up your circuit to go between pickups and board.
I have discovered the component choice is bewildering ( RS Components website ) - can I trouble you for a little more detail as I don't want to buy the wrong stuff.
To make up two connecting circuit boards I think I need;
4 x 10K resistors - need to know type and wattage
2 x IM resistors - need to know type and wattage
2 x 100K resistors - need to know type and wattage
2 x 47K resistors - need to know type and wattage
4 x 0.2uF capacitors - need to know type and wattage
Excuse my ignorance but I have no clue as to whether I should order ceramic resistors, carbon ones, or another version. Also, no idea of correct wattages ...
I imagine you know all this stuff without thinking about it !!
Thanks,
Patrick
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yes, here too, still sorting things out after recent death of a senior, for whom I was caring
i'm going to be visiting family until after Easter, but I've made some progress in designing a little PCB for this adaptor circuit shown above and plan to CNC some (for free), when I return.
Apologies re. component specs, I thought Mervyn might be doing the construction, as he seems to have elec. familiarity
The adaptor presents a high impedance output to an FET input circuit, using 9V battery supply levels, and so all components are non-critical in wattage (resistors can be carbon, 1/8W or 1/4W; caps can be mini polyester 100v type)
The 100k trimpot could be replaced by a fixed 47k resistor for simplicity
If you don't already have spare parts, I can supply them (free) because you usually need to buy in packs.of 5, 10, etc
Hope this helps
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NB.
All my circuits, as mentioned elsewhere, are for the Sinso version with the Vol & Tone controls below the body, near the output jack
In the Sinso with controls above (ie. not in the PCB cavity), Aria have sited the controls in a separate cavity via a small hole for their wires. I believe that access hole is too narrow to allow control connectors through, and would possibly need longer wires too - this needs to be taken into account when planning any replacement of this Sinso variant
I'd strongly recommend making initial upgrade attempts to the Sinso with controls below