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ErinsAudioCorner.com

Just thought I'd drop a line here and let you guys know that I am testing speakers/drivers and posting on my site.  I used to post to my old site but the server died and I had a lot of family stuff going on at the time so just never bothered to worry about it.  Decided to move everything over to a new spot and will hopefully start testing again soon once I see what the quote from Klippel is going to be.

I just ported over 3 reviews from the old site:
Scanspeak 12m Midrange
HAT L1-Pro R2 Ring Radiator Tweeter
Tectonics 2" BMR Speaker

Links below. Enjoy!

https://www.erinsaudiocorner.com/driveunits/scanspeak-revelator-12m-4631-g00_4.5_midrange/

https://www.erinsaudiocorner.com/driveunits/hybrid-audio-l1-pro-r2-ring-radiator-tweeters/

https://www.erinsaudiocorner.com/driveunits/tectonic-elements-tebm35c10-4-miniature-bmr-driver/
brek81jr@macSilver1omojoeybuttsJasonP

Comments

  • Do you have Klippel capability?
  • DanP said:
    Do you have Klippel capability?
    erinh said:
    ... will hopefully start testing again soon once I see what the quote from Klippel is going to be.
  • ^ couldn't figure out how to add to my reply above.  But I guess you get the idea now.  The plan is to use Klippel again.  But that depends on what the cost is going to be.  I have been weighing starting a gofundme page to see if I can get some help with the costs.  
  • erinh said:
    ^ couldn't figure out how to add to my reply above.  But I guess you get the idea now.  The plan is to use Klippel again.  But that depends on what the cost is going to be.  I have been weighing starting a gofundme page to see if I can get some help with the costs.  
    What did you pay for the original one you had?
  • edited February 7
    If I'm being honest I'd rather not put a number on it.  They helped me source a used one last time and hopefully that is something that can be done again.  I had well in to the thousands of hardware and software last time, though.  And that's without some of the other things I requested a quote for this time such as the laser (increased accuracy in T/S and linear Xmax) and the test stand.  Shipping is not going to be cheap, either.  I should know within the next couple weeks what the final verdict will be.

    I've also asked about an automated turntable; I built one myself but if there's some way to automate turning the speaker that will interface with their software module(s) it then that improves not only time but also accuracy.  I'm trying to make as much of this as automated as possible because, no joke, it took me about 8 hours to do a review on a driver last time from the set-up (including cutting baffles which always was a drain), taking photos, capturing the data, posting and then finally tear-down and store away of the test rig.  I hate spending time away from my kiddo.  That's why I'm writing some post-processing scripts to help with some of the heavy lifting.  That's also why I'm planning on having her join me in some of my efforts.  I've told her I'd give her $5 for every intro she composes on her piano for my videos.  :D
    ani_101Silver1omokenrhodesThumperTom
  • For those who aren't part of the Facebook group or YouTube pages I've started in tandem with my website, I thought you might like to see this video.  It gives you some insight in to my background, why I'm testing and why 80's music is my love.  :D


    kenrhodes4thtrydcibel
  • Erin –

    Thanks for the informative video.  Back when you posted Klippel reviews over at diymobileaudio I felt you were a lone voice in the wilderness.   It seemed most members were only obsessed with buying the next, more expensive upgrade and price was always equated with quality.  When that website morphed into its current state I stopped visiting. 

    I fully enjoyed your medleysmusings website, especially the KEF coaxial tests.  So I’m happy you have a new website.   I also wish you the best with your Youtube and FB sites.  I will have to admit that that I’m a dinosaur and prefer the forum and web based sites.  I have a lot of philosophical problems with the FB platform so I stay away from it.  But I guess that’s where a lot of people hang out.   Welcome back.


    erinh
  • edited February 10
    Thanks for the feedback. 

    I understand that many are anti-FB.  And I'm not making content solely available there.  Actually, the FB group was created just as a quick way for me to inform a lot of people there is new data on my site.  It's the alternative to email blasting everyone.  

    I think the YT format will be better in some ways to highlight products.  And other times a written review with photos is all I'll need.  But I know that I have gotten various questions about my test setup and I know I am a fan of multiple youtube reviewers because they do a good job of presenting an item I'm interested in.  So I'm just using the various methods at my disposal to yield the best quality review.  
  • Sometimes it is nice to actually see something explained in a video format as opposed to a few pictures in a written article - I think that is one of the things that make the YT platform so popular in the DIY communities. I will keep watching =)
    erinh
  • Sometimes it is nice to actually see something explained in a video format as opposed to a few pictures in a written article - I think that is one of the things that make the YT platform so popular in the DIY communities. I will keep watching =)

    I agree.  

    I have some ideas for videos in the future.  Just patiently waiting for the folks at Klippel to get back to me regarding costs of what I've asked about.  After that then I can decide how I want/need to move forward.  

    Thanks for watching!

    - Erin
  • High school buddy had a dog with that same problem.  Guess how it woke us up in the morning ...
    Yea, I like the video idea backed up with hard data and your background lends plenty of credibility to the findings.      
  • Whoops.  I should have put my question in this thread, sorry about that, copy & pasted here:

    "Hi Erin,

    I was reading the "Test Methods" section on your website and was wondering if you are using the same IEC test baffle as listed in the Legacy Review section?    I am currently building a DIY IEC test baffle for my own use at home and was wondering what your thoughts are on the baffle size needed to get good measurements.  Thanks.   Bill"

  • 4thtry said:

    Whoops.  I should have put my question in this thread, sorry about that, copy & pasted here:

    "Hi Erin,

    I was reading the "Test Methods" section on your website and was wondering if you are using the same IEC test baffle as listed in the Legacy Review section?    I am currently building a DIY IEC test baffle for my own use at home and was wondering what your thoughts are on the baffle size needed to get good measurements.  Thanks.   Bill"


    Well, just to be clear, I haven't started testing again just yet.  I'm still waiting to get a final quote.  Klippel told me to give them a few weeks  (they are going to have to wait to get everything together in order to give the final shipping quote).

    As far as the size, that depends on a few things.  How low you can (plan to) measure in terms of a reflection free window (i.e., how high you can gate) and if you plan on doing nearfield/farfield merging.  My scaled down baffle was adequate for testing by combining the NF and FF measurements without having any issues show up.  Between that and modeling with Edge or VirtuixCAD to determine the impacts of the baffle, I would say a true IEC baffle is unnecessary.  I had that at one point very early on and see no need to do that again.


    That said, one of my hair-brained ideas is to actually build a room in my attic for testing and in doing so, I will dedicate an entire wall for being the test baffle.  :)
  •  Thanks for the info.  The size I am building is 1350 x 1650mm, which is roughly the scaled down size recommended for 8 inch woofers.   I do not plan to build speakers using anything bigger than an 8 inch woofer.   I will be raising the test baffle up on a stand which sits on top of my home brew horizontal polar table.  This will place the mic and speaker at a height of roughly 55 inches above the floor.   This will be in the middle of my living room or "great room" which has a sloped ceiling leading to a loft area.   The nearest reflection will be about 6.5 feet from the mic tip and speaker in all directions, except the floor, which will be closer (55" ).  I generally set my gate at 5ms.  

    I will not be merging NF and FF data.   When I build and test a speaker cabinet, I will be doing all my design work using FF data only.  I want to include the floor boundary reinforcement effect in my measurements, which varies quite a bit with woofer height.   If I  apply smoothing to the bouncing data curve below 400Hz and then merge this back onto the FF curve, I can get the amount of BSC to apply fairly close in XSim.   I do not use Edge or VirtuixCAD to model the baffle, as the baffles I have been building lately are generally too complex in shape to fit the models.

    I think your "hair-brained" idea is a good one.  Go for it.  B)

  • This is great Erin. I love to see the data from medlymusings returning. I hope you get it all figured out and back into action, that would be amazing!
    erinh
    = Howard Stark: "This is the key to the future. I'm limited by the technology of my time, but one day you'll figure this out."
  • Also something to note: If you look at the bottom of the page here on this site, https://www.erinsaudiocorner.com/driveunits/kef-q100-drive-unit/ you can see the effect of a woofer cone position on the output of a coaxial mounted tweeter. It is the only place I have seen this examined, and I've always felt it was audible (though minimally) in these designs.
    erinh
    = Howard Stark: "This is the key to the future. I'm limited by the technology of my time, but one day you'll figure this out."
  • Thank you, Jason.  I'm working hard on bringing back all the old reviews.  And still waiting for Klippel to get a final quote for me.  I hope to hear back this week.  Then I can move forward.  


    Also, thanks for the note about the Q100 testing I did.  I actually had a few industry guys contact me privately and tell me they thought it was insightful and would likely implement similar testing on their own coaxial drivers.  Pretty sweet!
    ani_101
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