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Radically upgrade your sound and music experience with this 100dB HiFi Bluetooth speaker/portable audio monitor. 50 hours playtime!
1,083 backers pledged £84,768 to help bring this project to life.

Final Production Specs (Coming Soon)

Posted by Frankenspiel Ltd. (Creator)

Hi everyone,

Chia has been working hard on the final tuning of the FS-X, he’s almost there but he needs some more time to fix the production specs.

As soon as we have them we’ll post them in another, separate, update.

The next steps after that will be to build sample units of the FS-X, film the demo and send out samples for testing and review.

In view of the timeline, if any of you need to change your address, please do so using instructions from Update #49.

Thank you for your recent questions and comments, here’s a few answers we got from Chia.

ttan asked:“@Chia at FS-X Can you clarify on the battery-life aspects. The 50 hours claim is based of a voice-speaking volume of 70db. But at loud playing volumes, the battery life should drop dramatically. A 12 watt-hour battery running close to max continuous power (35watt or 54 watt) would imply that the battery would be drained in less than half-hour of playback. Can you please clarify this? Thanks.”

No, unless you are listening to 100Hz square wave, (a test special test signal, not actual music) the amplifier is still efficient enough to run for a really respectable time. This will be reflected in the final specs.

bsl100 commented on the issue of Fs (fundamental frequency).

This parameter is the free-air resonant frequency of a speaker. Simply stated, it is the point at which the weight of the moving parts of the speaker becomes balanced with the force of the speaker suspension when in motion. If you’ve ever seen a piece of string start humming uncontrollably in the wind, you have seen the effect of reaching a resonant frequency. It is important to know this information so that you can prevent your enclosure from ‘ringing’. With a loudspeaker, the mass of the moving parts, and the stiffness of the suspension (surround and spider) are the key elements that affect the resonant frequency. As a general rule of thumb, a lower Fs indicates a woofer that would be better for low-frequency reproduction than a woofer with a higher Fs. This is not always the case though, because other parameters affect the ultimate performance as well.

Put another way, an Fs value of x Hz, does not imply there is no usable sound at frequencies below x Hz.

Again, this will be reflected in the final specs.

Here’s an updated timeline with our projections.

All the best, 

The Frankenspiel Team

PUMA, Kirk Brownridge, and 2 more people like this update.


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    1. Rob Sánchez on

      This is really disappointing. I hope that in the future nobody will back your projects again. This was an failure of an investment that personally I will definitely NOT repeat with you. Really, really disappointed.

    2. Missing avatar

      ttan on

      As much as you and I think that their technical specs does not line up with reality; this happens quite often with low-end consumer electronic products. And, as such, I did not give it much thought, until Chia started to engage us on technical issues. However, at this point in time, whatever the technical over-claims may be are minor compared to the other aspects of this project.

      In horse-racing, we are advised, "Don't gamble with money that you cannot afford to lose". IMO, if members of FS-X continue to come back with more news of delays with scant evidence of FS-Xes being assembled, tested and packaged at this very late stage - I am afraid the gambler's advise may be our only option.

    3. Missing avatar

      Alain on

      @Creator(s) : Can you say if you plan to answer latest @Craig questions ?

      Just say yes or no please.

      Takes 5 seconds.


    4. Missing avatar

      Craig Trickett on

      another update, another delay. No progress has been made and no evidence of us being any closer. Several (if not the majority of backers) have requested a refund. Everyone is sick of the lies. No-one has received answers to

      - Is David part of the project still
      - Where are the finished Neoprene cases
      - What is the reason for the delay... again and again.
      - Why cant we have a refund seeing as you keep proving that you are unable to produce the speakers and have promised to issue refunds when you cannot supply the speakers. (do you think that by simply delaying the delivery forever that gets around your promise?)

    5. Missing avatar

      bsl100 on

      @ Creator....

      56 Updates and 1311 comments later we are as we were at the start of the campaign. What do you want us to infer from this. Sometimes you get a feeling that either we are dealing with incorrigible liars or with people who don't know their tech well enough to put out the product.

      You answer to my comment regarding the fs is quite lame. Its something I have already mentioned in my comment. Its understood that the fs can be brought down. The point I had raised was that there is a limit to how low you could go if you had a driver with an fs of 184Hz.

    6. Lucas Gabardos on

      Feb 5 : "we don’t expect [final tuning] to take longer than a week"

      A month later it seems that nothing has changed...

    7. Gustav Öst on

      I noticed that you just moved everything that was supposed to happen February 19 - March 1 to March 1 - mid March. Except for the Q&A. What are you doing?! Vacation?
      I also noticed that you have not specified March of what year. Normally I would assume 2015.
      By your progress so far, it is not obvious that this is the case. So.
      Which year is this timeline for?

    8. Marcus Sundman on

      So 2 weeks went by and in the new timeline you just moved everything which should have been done by now forward by 2 weeks. So in April the timeline will look like:

      April 1st to mid-April

      Final tuning of the FS-X
      Fixing final production specs
      Building sample units
      Filming demo
      Production in China
      Subwoofer blah blah

    9. Raimis Juodvalkis on

      I regret big way, that I do entered this project. One year passed by and we all still have nonsense about correct shipping address. Where is the product???I want my pledge back. Really disappointed.

    10. Missing avatar

      ttan on

      Thank you for your response to my battery life query.

      Would appreciate if you can arrange a high-volume playback battery-drain test in the upcoming video? Time-lapse capture with power/current metering would be ideal, if possible. TIA.