I guess that proves it: if you buy a Daniel Hertz M1, why, you're no better than the leaders of Russia. 😀
I recently was looking all over for this posting and couldn't find it. Thanks for bringing it back up.
I like the look of these speakers myself. They have a very stoic and powerful look to them. I think that a speaker of this price point would take much more care to limit diffraction however.
What do you guys think about a clone that replaces the TPL150H with a OSWG or SEOS waveguide? I have a feeling that such a design could be quite an improvement but I have never played around with the TPL150H.
I like the look of these speakers myself. They have a very stoic and powerful look to them. I think that a speaker of this price point would take much more care to limit diffraction however.
What do you guys think about a clone that replaces the TPL150H with a OSWG or SEOS waveguide? I have a feeling that such a design could be quite an improvement but I have never played around with the TPL150H.
TPL-150H is a killer! I don't think any compression driver (even TAD, BMS, Radian, you name it...) could sonically be any close to TPL-150H
I also think that a remake of the M1 with the TPL150H would be superior to the original CD&Horn combo of the M1. Do you guys know if the 12 in driver is in a sealed enclosure? I know the 18 inchers have the two ports on the front.
I am surprised that my one question about what brand driver the M1 uses over 2 years after the last post got this thread revived and there seems to be a lot of interest in this again. I guess everyone here likes a 3 cent on the dollar clone of a $100,000 speaker system. Who wouldn't? 🙂
The 12P80ND is in a sealed chamber and well stuffed. this will make the box design a lot easier to build.
Audio Elite,
Do you happen to know the box volumes, tuning freq, and cross over points. I seemed to have missed that.
Do you happen to know the box volumes, tuning freq, and cross over points. I seemed to have missed that.
According to a website the xover frequencies are 80Hz and 1.8kHz.
No idea about the rest but personally I'd run the 18" about an octave higher.
No idea about the rest but personally I'd run the 18" about an octave higher.
And the 12P80ND no higher than 1.5 to keep out of problematic territory😉
This speaker is probably tuned to around 22-25hz and a box volume of around 200-250 litres.
If you use the Beyma TD194 90x40 deg horn instead of the TD164 (60x40) you could/should go down to 1.2k driver permitting.
Pretty sure 1.8k was chosen to match dispersion patterns.
Pretty sure 1.8k was chosen to match dispersion patterns.
The 18" woofer, and 12" midrange, do have ripped cones. So definitively they do not use 12p80nd , and 18p80nd. Probably not even Beyma cone drivers.
Maibe only the horn and horn driver.....
In my view, that is a bad looking elefant speaker, it could be made much better.
Maibe only the horn and horn driver.....
In my view, that is a bad looking elefant speaker, it could be made much better.
I notice the same thing too. Just because the manufacturer claims the whole speaker is 100 dB efficient people assume the bass drivers are the 100 dB units. They are probably the 97 or 98 dB efficient ribbed paper cones. Close enough to 100 dB? I wonder which model? Although that is not to say if you wanted to build your own better than an m1 clone you can't use 100 dB Nd magnet smooth cone drivers.
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, but you are wrong! The 12 is not ribbed is definitely the 12p80nd. All drivers are Beyma and have confirmation from the local Beyma supplier! We can make this thing sound better!!!!
The 18" woofer is unusual.. 4 pleats for the surround and with a ribbed diaphragm. Beyma, no. 18 Sound, no. BMS, no. Eminence, no. etc.. (..though it's entirely possible that it's custom from Eminence or Ciare.)
Also note that the 100db is usually taken from 1 kHz, so that's pretty much only a reference to the 12" mid-bass driver. It's likely that the 18" has it's own eq. for added baffle-step compensation for the mid-bass 12". The 18" could easily be 95db.
Also note that the 100db is usually taken from 1 kHz, so that's pretty much only a reference to the 12" mid-bass driver. It's likely that the 18" has it's own eq. for added baffle-step compensation for the mid-bass 12". The 18" could easily be 95db.
look carefully, no ribbs.
http://m.youtube.com/watch?v=vLvcCfN90Fs&desktop_uri=/watch?v=vLvcCfN90Fs#
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Might I suggest an eye exam? 😉
Increasing the resolution to 720p with it full-screen and then look at 32-33 seconds in (where it's actually in focus for a fraction of a second).. VERY closely.
(..they move the camera about defocusing and it blurs the footage - the ribbing is more pronounced on the 18" driver and the compounded effect is a 12" that has the appearance of no ribbing.) 😱
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If you google images of them some 12s look ribbed others look smooth.
The horn looks like like a Beyma TD245 which is not listed by Beyma anymore.
The horn looks like like a Beyma TD245 which is not listed by Beyma anymore.
If we were going to make an even better version of the M1, would it make sense to switch to the smooth Nd series anyway? Also, switching to the TPL150H may sound even better.