Daniel Hertz Levinson M1 wow

[beardman]

If you have heard a Aksa Maya amp,,the you can talk about newer go back...i totally prefer ordinary SS amp ,,they plays more musical ,

and i still do not like Beyma cross this low,,,but they play totally fine about 2,8khz

 

[Ro808]

Obviously only one can solve the mystery (For once I allow myself shameless bragging)

Here's a clue.

 

[frangus]

it's co-axial
?

Tell us the secret sauce...

 

[Ro808]

It's not a co-axial, but the company that invented the Hertz horn also makes this:

 

[Ro808]

Around the time the M1 was launched, about 10 years ago, I was researching horn-throat transitions.

If you take a closer look at the Hertz horns...

An externally hosted image should be here but it was not working when we last tested it.

You'll notice the throat section differs from similar horns, like this Monacor MRH-300 aka P.Audio PH-94:

 

[Ro808]

Another clue:

 

[Ro808]

The origin/inspiration.

 

[ErnieM]

At least it has some novelty to it rather than the off the shelf components in a box I thought it was.

Would still rather see a nice waveguide instead.

 

[darkmatter]

Around the time the M1 was launched, about 10 years ago, I was researching horn-throat transitions.

If you take a closer look at the Hertz horns...





You'll notice the throat section differs from similar horns, like this Monacor MRH-300 aka P.Audio PH-94:

Interesting research, is that a 1" or 1.4" Horn flare?

A couple of close up images of the M1 horn


The M1 Horn flare

Close-up of the M1 horn flare

Thanks

DM

 

[darkmatter]

Interesting research, is that a 1" or 1.4" Horn flare?

A couple of close up images of the M1 horn


The M1 Horn flare

Close-up of the M1 horn flare

Thanks

DM

Wonder if anyone identified what model this horn flare is?

 

[Ro808]

It's what I call an "Altec Mantaray derivative".

Plenty of these available.
Some examples, in order of resembling the Hertz horn:

• Monacor MRH-300
• Beyma TD-360
• P.Audio PH-64, PH-94, PH-642, PH-942
• BMS 2230.

 

[jan.didden]

A real brawl about Daniel Hertz M1 speakers at the Axpona show!!

Agreed about the price.

does anyone actually think they look good?

They look as tacky as you can get in my book.

Quite ugly, but hey, it's a conversation piece for the happy few.
I mean, with those size drivers and the distance between them, the directivity and sound stage will be all over the place.
I wouldn't touch it even if I had the money.

jan

 

[Ro808]

C-C distance is actually nearly perfect, at least where it matters most.

 

[ScottG]

Looking at the photo's - it looks like a common *commercial (cast aluminum) horn that has been cut-out at the entrance and has a custom guide-adapter plate to increase expansion from the compression driver into the horn. (..and obviously the external mount plate (chrome-plate) is custom as well).

*and the horn is being used horizontally with its vertical orientation (resulting in narrower horizontal dispersion with a higher spl-loss rate off-axis.)

 

[Ro808]

Interesting research, is that a 1" or 1.4" Horn flare?

A couple of close up images of the M1 horn


The M1 Horn flare

Close-up of the M1 horn flare

Thanks

DM

The driver appears to be a Beyma SMC-65, so 1.4".

 

[atilsley]

I built a 3-way (partly) modelled on the M1, using Faital Pro 18 inch sealed 'sub' (powered by 500-watt MiniDSP amps), Beyma 12 inch mid and Beyma TPL150 in custom CNC'd waveguide. Passive LR2 xover for the mid/horn (200Hz / 2,500Hz). Very big/clean output. Paired with Weston Acoustic Class A power amps and pre-amp. For a gent in Malaysia. Personally, I like my 3-way horn rig (CNC'd) myself, with Altec 15 416 bass in my owned designed horn (ported), Yuichi 290 plus 3,000Hz lathe turned tractrix horn. All passive xover, 500Hz/3,000Hz LR2.

 

[darkmatter]

@atilsley Thanks most interesting
My own design will take some cues from the M1 but will use separate modules for each driver the cabinets will be over engineered as I did with my hommage to the Wilson X1 some 25 years ago!! my first real big build in my 20s
My use of separate modules means I can play about with diffeent drivers with dedicated crossovers.
Early days with the concept though.

 

[atilsley]

Thanks. All the best in your project.

 

[Jaypee]

I built a 3-way (partly) modelled on the M1, using Faital Pro 18 inch sealed 'sub' (powered by 500-watt MiniDSP amps), Beyma 12 inch mid and Beyma TPL150 in custom CNC'd waveguide. Passive LR2 xover for the mid/horn (200Hz / 2,500Hz). Very big/clean output. Paired with Weston Acoustic Class A power amps and pre-amp. For a gent in Malaysia. Personally, I like my 3-way horn rig (CNC'd) myself, with Altec 15 416 bass in my owned designed horn (ported), Yuichi 290 plus 3,000Hz lathe turned tractrix horn. All passive xover, 500Hz/3,000Hz LR2.

Great!
I plan to design a speaker with similar approach with Beyma TPL200 + 10MCF400Nd and probably 21PW1400Fe V2.
Can you name your 12" mid please?
Cheers,
J.

 

[atilsley]

The 12 inch was from Beyma, it was a high efficiency model from meory.