Gut-a-like strings on a 1/2 size double bass?

Obligatos maybe, maybe maybe...I have a set of weedwackers, and they can be fitted on pretty much every size of bass. It's just a piece of plastic at the end of the day Not sure how vintage it sounds but at least not spiros

 

Obligatos are available in 1/2 size, by the way.
Here's the choice available at Gollihur Music:
Strings: 1/2 size strings at Gollihur Music - Double Bass, Upright Bass, String Bass Specialists

That said, it may be possible to use regular lenght (3/4) strings, but you'd have a lot more slack to wind up at the tuner.
The benefit is lower tension on a shorter scale.

 

A very gut-like version of weedwackers is the spiral cut Superior BassWorks Deluxe strings in dirty gut color... I've been using them on a 3/4 bass (Alcoa) for bluegrass and old jazz and I like the sound and feel of them a lot for both pizz and arco.

The SBW Deluxe strings are low-to-medium tension, feel and look like gut and most people who know anything about gut ask me if they're real.

For acoustic pizz, the E string (even the highest tension) does suffer from muddy-ness (typical thick low tension nylon string sound), less if you're playing close to the bridge, but the rest of the strings are clear and strong. For acoustic arco the whole set is clear, even and very growly like gut would be. These strings come as a 6-string bump-pack so you can decide your lowest-highest string tensions based on thickness. Set cost is $57.97 depending on where you get them (Amazon/SBW, etc.). They can be cut to length as needed, and they take about a week to settle in.

My bass has bridge wing and fingerboard piezo pickups and the whole set sounds great when plugged in direct for both pizz and arco. Last few weekends we've been recording for two new albums in the studio and we're really pleased with the sound, and when plugged into a PA for festivals, etc., we've also been very pleased.

There are a lot of strings to select from and I've only tried the SBW Deluxe string set and a mixed set (standard un-textured weedwackers with a red steel core A used as an E) that originally came with my bass. But of the two sets the SBW strings are definitely the best.

 

Obligstos are not gut. They are flexible synthetic strings

 

Not to necessarily try to influence your decision, but the SBW Deluxe webpage says the following:

• Fits most 1/2, 5/8, 3/4, 7/8, and 4/4 scale basses.

It is hard to choose. Best of luck!

 

Heavier tension gut-like Innovations might serve your purposes well.

 

Yes, but since you seem to be looking for strings that are rather floppy, it may be a positive side-effect in your case.

 

Download my Excel File from my Dropbox (link in signature) and entre your scale on the top legt and you can see the tension of a string in the list on your scale. On a smaller size instrument you won't like to have the same tension than on a larger instrument to avoid too much pressure to the smaller (and thinner) top. But the tension drop because of the shorter scale is a bit too much of a tension drop due to the smaller body.

 

I would get an orientation from the original tension of 1/2 size strings. Spirocore are on the higher side (in general, no idea if the 1/2 size are different). So thane that as the upper end and 20% less as the lower end. Depends a lot on the bass what is best in that range.