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Speakers for DIY


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By | 2018-02-28T03:50:14+00:00 October 12th, 2016|Categories: Amplifier|71 Comments

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  1. Brandon Weiler November 17, 2016 at 6:00 pm - Reply

    Are full spec sheets (including Thiele Small parameters) available for these speakers? Thanks in advance.

    • Drok November 18, 2016 at 8:57 am - Reply

      Hello Brandon Weiler,
      Thank you for writing in.
      Since these speaker are new coming products, we do not have this full spec sheet right now.
      Could you please tell us which speaker you are interested?
      Best regards

  2. Peter McGee January 2, 2017 at 1:26 pm - Reply


    I also need spec sheets for

    Hope to get this soon, purchased 4 of these to make some transmission line speakers but they didnt come with a spec sheet.

    Thanks in advance for the reply


    • Drok January 4, 2017 at 10:20 am - Reply

      Hello,Peter McGee
      Thank you for writing in.
      We are sorry for any inconvenience caused on you.
      Here are the spec sheets for your reference.
      Hope this can help you.
      Hope200279 spec sheets
      Best Regard

      • Peter McGee January 4, 2017 at 11:04 pm - Reply

        I was hoping for a better spec sheet, with resonant frequency and other information to help me create the best enclosure.

        Thank you.

        • Drok January 6, 2017 at 8:58 am - Reply

          Hell,Peter McGee
          Thank you for your reply.
          We are terribly sorry that the instruction can’t meet your demand.
          Instruction is not suitable for you. However, if you have any question about the item, please feel free to contact us via email service at droking dot com.
          We will be always here to assist you.
          Beg your forgiveness and understanding.
          Best regards

  3. Richard Byle February 14, 2017 at 10:57 pm - Reply


    We would like to get specifications on the B00LSEVA8I. Can you include dimensional information also.

    Thank you.

    • Drok February 15, 2017 at 6:34 am - Reply

      Hello Richard Byle,
      Thank your for writing in.
      Here is a simple instruction. Hope this can help you.
      Best regards.

  4. Sebastian Dam February 19, 2017 at 2:45 am - Reply


    I need “Free Air Resonance” (Fs) and “Total Q” (Qts) parameters for B01IXZEAWC speaker (Equivalent Volume Vas is present in the Amazon description). Could you help me please?

    Thank you

    • Drok February 19, 2017 at 9:04 am - Reply

      Hello Sebastian Dam,
      Thank you for writing in.
      Since it is the vacation of weekend, our technicians are out of office, we
      cannot find a solution to you at once.
      Could you please wait 1-2 daya until when our technicians come
      back to work?
      We will find a solution to you ASAP.
      Hope you can understand.
      Best regards

  5. Sebastian Dam February 19, 2017 at 1:46 pm - Reply


    I wait the answer without problems! Meanwhile, I just bought two B01IXZEAWC speaker from Amazon marketplace.
    Thank you for very quick answer.

    • Drok February 21, 2017 at 7:27 am - Reply

      Hello Sebastian Dam,
      We are sorry for keeping you waiting.
      The parameters is as follow.
      Fs: 109.6 Hz
      Qts: 0.67 Hz
      Qms: 6.01 Hz
      Qes: 0.76 Hz

      Hope this can help you.
      Best regards.

      • Sebastian Dam February 21, 2017 at 1:24 pm - Reply


        Thank you very much!

        P.S. Qts, Qms, Qes should be non-dimensional parameters

  6. Sebastian Dam February 23, 2017 at 4:16 pm - Reply


    today I have received the B01IXZEAWC speakers and I’m very satisfied, but for a precise calculation of enclosure volume and frequency tuning I need of other two parameters:
    – Xmax
    – Sd
    Could you help me please?

    Thank you

    • Drok February 24, 2017 at 8:41 am - Reply

      Hello Sebastian Dam,
      Thanks for writing in.
      In order give you accurate values, we need to do a test on this item.
      We will tell you this two parameters once our technician finish the test.
      Have a nice day
      Best regards.

      • Sebastian Dam February 26, 2017 at 10:42 pm - Reply


        thank you so much for your time! I won’t even bore you with my questions but for me the value of “Vas” given in Amazon description is not correct. For a 15W and 3 inch speaker (B01IXZEAWC) the Vas = 2.5 litres seems too high. Could you ask your technicians if this value is ok?

        Thank you very much

        • Drok February 28, 2017 at 3:06 am - Reply

          Hello Sebastian Dam,
          Thanks for you replys.
          It’s our responsibility to find out solution for you.
          The parameters you need as follow:
          Sd : 61
          Xmax: 16mm
          The Vas range is 1.8-2.5,which ia a result from test. It’s availabe to test.
          Hope this can help you.
          Best regards.

          • Sebastian Dam February 28, 2017 at 11:29 am


            Comparing this parameters with others manufacturers, the difference is too high. A Xmax of 16mm (1,6 cm) is not physically possible if the magnet has the height of 14/15mm (see “loudspeaker design cookbook” by Vance Dickason page 4). Moreover with a Sd = 61 (I guess cm^2) the effective diameter of the speaker (cone diameter + surround) should be 88,1mm instead the real value is 62mm. How is it possible? In order to clarify this points, could I contact directly by email your technicians?

            Thank you

          • Drok March 1, 2017 at 7:07 am

            Hello Sebastian Dam,
            Thanks for your reply.
            You can contact us through the following email:
            service#droking dot com ( please replace # with @)
            Best regards.

      • Gabriel Ciosu February 27, 2017 at 2:47 pm - Reply

        For B01IHHUO9E /B01IMQU4PO 4” 40w low hifi Woofer- what are the specifications, Vas especially ?

        Best regards,

        • Drok March 1, 2017 at 10:11 am - Reply

          Hello Gabriel Ciosu,
          Thanks for writing in.
          Here it the specification for B01IHHUO9E.
          200276 parameters
          Hope this can help you.
          However,We are sorry we can’t don’t have item(B01IMQU4PO). Is there anything wrong?
          Best regards.

          • Gabriel Ciosu March 1, 2017 at 3:37 pm


            Thank you for the reply. This is the product

            On the amazon site it is specified with a Qts of 0.55 as it follows:

            outside diameter speaker: 105 mm
            Impedance: 8 ohms
            Sensitivity: 87dB
            Qts: 0:55
            Effective frequency: 65Hz-6KHz
            Rated power: 40W
            diagonal screws distance: 115 mm
            Height Speaker: 57mm
            Magnet diameter: 80mm
            Hole diameter: 93mm

            Which one is the good one?

            Best regards

          • Drok March 2, 2017 at 1:31 pm

            Hello Gabriel Ciosu,
            Thanks for your reply.
            Actually, they are all good items.
            We suggest you should choose one can meet your requirement.
            Best regards.

  7. Matthias May 25, 2017 at 6:54 pm - Reply

    Hi there

    Is there any way to see the actual length of these subwoofers?
    Which ones are up to ~ 4 cm long?

    I mean the depth, in order to use them in a slim case.

    Thanks a lot

    • Drok May 26, 2017 at 9:58 am - Reply

      Hello Matthias,
      Thank you for writing in.
      Most of speakers in the sheet have the detail description on size. You can take a look there
      Would you please let us know which item you are interested in?
      Best regards.

  8. Wayne July 16, 2017 at 4:45 pm - Reply

    Is it possible to get the Theile small paramaters for B01IHHN9G4 (
    Thanks for your time
    Best Regards

    • Drok July 17, 2017 at 7:56 am - Reply

      Hello Wayne,
      Thanks for writing in.
      As the picture showed, these are all parameters we have got for the item #B01IHHN9G4.
      Hope it can help you.
      Best regards.

      • Wayne July 26, 2017 at 6:46 pm - Reply

        Hello again,
        Thank you very much for your reply. I was pretty happy with the speaker and went ahead and ordered a couple more but I noticed the speakers do not come with fact sheets. So could you also please send me the TS parameters for the following speakers (the same as you sent before will be fine, thank you). They are: B01IXZEAWC seen on ( and the B01JYVYHWW seen on (
        Kind Regards

        • Drok July 27, 2017 at 8:09 am - Reply

          Hello Wayne,
          The parameters for B01IXZEAWC is as followed:
          But we are sorry we can’t find out Ts parameters for B01JYVYHWW. As it is a tweeter speakers,it’s hard to do test to figure out Ts parameters.
          We can only know Fs is 2000 Hz. Hope you can understand.
          Best regards.

  9. Wayne July 29, 2017 at 1:12 am - Reply

    Thank you for your reply.
    Can I just confirm the VAS for B01IXZEAWC is 2.5L as this seems a bit large for a 3″ speaker. Unless I’ve miscalculated that would require a box volume of 22L for this speaker.
    Kind Regards

  10. Ian July 29, 2017 at 9:11 pm - Reply

    I have purchased a set of Drok 4 inch Hi Fi subwoofers that I want to build into a quality sound bar for cinema sound.
    The number on the box packaging is X000K16OGB.
    Could you please supply me with the following information.
    FS, Qms, Vas, Xmax, Sd, Qes, Re, and Le values.

    If not could you recommend an enclosure volume for Sealed and vented (tuned) in either Liters or cubic foot.
    Many Thanks.

    • Drok July 31, 2017 at 8:33 am - Reply

      Hello Ian,
      Thanks for writing in.
      The item you bought should be #200273
      Actually, we have talked with other buyers about its parameters in previous posts.
      That is all the parameters for this item.
      Hope it can help you.
      Best regards.

  11. Drok July 31, 2017 at 8:25 am - Reply

    Hello Wayne,
    Yes, the VAS is 2.5L
    Best regards.

  12. Ian August 1, 2017 at 3:29 pm - Reply

    Many Thanks for the Parameters they should be very helpful

  13. Charlie Talks September 2, 2017 at 5:18 pm - Reply

    I’ve purchased the B01IVAKYO2 and wonder if you have the TS parameters?
    Many thanks,
    Charlie Talks

    • Drok September 5, 2017 at 8:34 am - Reply

      HellO Charlie Talks,
      Thanks for writing in.
      We need to ask our technicials to do some tests. Then we can figure out TS parameters.
      Best regards.

      • Charlie Talks September 5, 2017 at 1:25 pm - Reply

        Thank you,

        • Drok September 12, 2017 at 9:31 am - Reply

          Hello Charlie Talks,
          This is TS parameters for item(B01J9QUU9Q)
          Best regards.

          • Charlie Talks September 15, 2017 at 3:08 pm

            Thanks a lot

  14. Charlie Talks September 4, 2017 at 10:37 am - Reply

    Sorry I meant B01J9QUU9Q,
    Charlie Talks

  15. Danilo September 7, 2017 at 9:44 pm - Reply

    spettabile Drok volevo sapere cortesemente se si potevano sapere le specifiche (VAS, HERTZ, QTS) dell’altoparlante da 4 pollici 40 watt 67 hz 6 khz 4 ohm 87 DB codice B01IHHCFQY.
    in attesa di riscontro, porgo distinti saluti, Danilo

    Spectacular Drok wanted to know courtesy if you could know the specs (VAS, HERTZ, QTS) of the 4 -inch speaker 40 watt 67 hz 6 khz 4 ohm 87 DB code B01IHHCFQY.
    waiting for feedback, I give you my best wishes, Danilo

    • Drok September 12, 2017 at 9:38 am - Reply

      Hello Danilo,
      This is all parametes for item# B01IHHCFQY. Hope it can help you.
      B01IHHCFQY (SKU: 200271)
      Best regards.

      • Danilo September 12, 2017 at 7:52 pm - Reply

        Grazie mille, veramente molto gentili

  16. Peter Reath September 22, 2017 at 12:56 am - Reply

    I need to replace the two, 3inch speakers in my iLoud Speaker. The manufacturer doesn’t offer replacement parts. The speakers are not marked in any way.

    Do you have any advice.

    • Drok September 22, 2017 at 8:07 am - Reply

      Hello Peter Reath,
      Thanks for writing in.
      Would kind of speaker do you need? We suggest you should firstly confirm the specification of you speaker.
      Best regards.

      • Peter Reath September 22, 2017 at 12:34 pm - Reply

        Manufacturer won’t provide specs. Will sell me another unit.

        Anything thing other physical size? I can check coil resistance,

  17. massimiliano October 18, 2017 at 1:26 pm - Reply

    Hi, may i use this Drok

    into the case for fostex fe103 ? is a 6.5 lt box with a reflex diameter 50mm long 60

    Thanks to all may reply

    • Drok October 19, 2017 at 7:24 am - Reply

      Hello massimiliano,
      Thanks for writing in.
      As we can’t ensure the actual size of your case, it is hard to judge if it is suitable.
      But here is the detailed dimension for our speaker. Hope this can help you.
      Best regards.

  18. Bob October 24, 2017 at 10:06 am - Reply

    Dear DROK,
    Do you have the parameters for B01GRG5O24 B00LJPNZY8 available?
    It would be very helpfull.

    Thank You ,

  19. Bob October 25, 2017 at 7:49 am - Reply

    Dear Drok,

    Do you have the parameters for B01IN8YDUI B01IVAKYO2 available?

    Thank you.


    • Drok October 26, 2017 at 9:14 am - Reply

      Hello Bob,
      Thanks for writing in.
      We can only find out one item with B01IN8YDUI. There are no result with B01IVAKYO2.
      Would you please tell us what parameters do you need? We need to ask our technicians to do testing.
      Best regards.

  20. Max November 13, 2017 at 6:04 pm - Reply

    Is there a datasheet for this speaker ?
    I am more interested in the size scheme and the distance between holes

    Thank you

    • Drok November 14, 2017 at 8:22 am - Reply

      Hello Max,
      Thanks for writing in.
      We have posted product structure on Amazon.
      Here it is 110031
      Best regards.

  21. Marc Dietl November 29, 2017 at 10:54 pm - Reply

    Hi Drok,
    I found on amazon (Germany) the subwoofer B01N0786XE which isnt listed on your Page. I Need all specs to Build a Box pls. I Hope u will find the Speaker that i bought. The specs which Amazon Wrote are: 6,5 inch, 50W, 4ohm, 87db, total diameter 178mm, frequency 54Hz-3,5KHz, Qts 0,49 and Volume 12L. The woofer US colored in Black and Gold.
    Thanks, Marc

    • Drok November 30, 2017 at 9:17 am - Reply

      Hello Marc Dietl,
      Thanks for writing in.
      Wouldy you please let us know what parameters you need? Actually, the main parameters has been showed on product page.
      Best regards.

  22. Marc Dietl December 1, 2017 at 7:21 pm - Reply

    Hey Drok,
    thanks for the answer.
    I Need the spec: fs.
    But pls give me all specs u have.
    Thank, Marc.

    • Drok December 6, 2017 at 7:34 am - Reply

      Hello Marc Dietl,
      Since our technicians were out of office for few days, we are sorry for keep you waiting.
      Here are the parameters we can get.
      Best regards.

  23. James Pelt January 17, 2018 at 10:44 pm - Reply

    I just wanted to comment that this company seems especially helpful in providing speaker parameters for those asking about them. I am very impressed and will be looking to use Drok speakers in upcoming projects. well done.

    • Drok January 19, 2018 at 9:52 am - Reply

      Hello James Pelt,
      Thanks for sharing your experience here.
      Look forward to more cooperation in the future.
      Best regards.

  24. Chris February 14, 2018 at 7:48 pm - Reply

    Hi, could you provide the perameters for B01IMPYGOU please?

    • Drok February 26, 2018 at 6:32 am - Reply

      Hello Chris,
      Thanks for writing in.
      Would you please let us know which parameters you need?
      Best regards.

  25. Chris M May 29, 2018 at 8:54 pm - Reply

    200.271 FS (hz) , VAS (l) , QTS , Vb (l) , F3 (hz ) , QTZ ?


    • Drok May 30, 2018 at 10:03 am - Reply

      Hello Chris M,
      Here are the parameters for 200271
      Best regards.

  26. Claudio June 30, 2018 at 12:09 pm - Reply

    Dear sirs,
    I need the data sheet of drok fullrange speaker 15W (Freq. response, Thiele parameters etc). Someone can help me?
    Thank you!

    • Drok July 1, 2018 at 8:03 am - Reply

      Hello Claudio,
      Please kindly look back the topic you created before, we have atttached the information you need.

      Best regards.

  27. Kriss October 24, 2018 at 10:42 am - Reply

    Hello! I planning a build, and would like to buy a hell lots of B01IVCFSDM, but I need TS parameters to sketch up the build. Could you help me please?

    • Drok October 25, 2018 at 8:54 am - Reply

      Hello Kriss,
      Thanks for writing in.
      But we can’t find out any item with B01IVCFSDM,please check if it is correct number.
      Best regards.

  28. Kriss October 26, 2018 at 2:04 pm - Reply

    Oh sorry, maybe this number is better: 200.243 ?

    • Drok October 29, 2018 at 3:58 am - Reply

      Hello Kriss,
      Here is T/S parameters for200243
      200243 T/S
      Best regards.

  29. botnet August 3, 2020 at 1:32 pm - Reply

    Hello, what are the specs for B01J5P74V8?  I need fs and sd

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