Introducing me and my speakers

[MiWi]

Hello everybody.
I posted a picture of my diy speakers in another thread.
To not capture the other thread, I will take the chance to say hello, introduce myself and tell a bit about my speakers here.

My name is Michael, I´m reading the diyAudioforum since 2004 but only made a few post. I really appreciate reading from you diy-pople from all over the world. I got some really good impressions from this forum.

I´m living in Dortmund, and I´m 28 young.
I´m totally into diy, mostly turntables, tonarms and speakers for about 6 years now.
I fooled around with some Lencos, my DIY turntable, some transmissionlines, single-driver-horns, frontloaded-conespeaker-horns and now ended up with compressiondrivers.

My latest projects are with the BMS4590 compression drivers (Mid/High coax).
There is a good friend of mine who also wanted to build speakers with the BMS, so we started to take the challenge together.
We learned a lot by comparing the different systems and had a lot of fun, as well as a lot of laphroaig.

My current system:
my system - click
Beyma 15LX60 in 130l vented enclosures, made from 40-80mm bended MDF, reinforced with fibreglass.
BMS4590 in elliptical DIY Horns, made from composite of fibreglass and polymeric-stone, wheight approx 35kg, quite dead.
The horns have a calculated f cutoff of roundabout 190Hz (Mouth 70*50cm, 43cm long), crossover with 24dB @ 400Hz. Mid/High crossover after all the really good bms serial crossover.
Bass/Mid crossover managed by DSP System from Sitronik.
The horns are fired by Peter Daniels LM3850 premiumkit , the bassdriver get their energy from SAC Igel.

My new system: (under construction)
the new system
The elliptical horns casted from flowstone + 2*12 midbass drivers per side in casted concrete enclosures + my 2*15LX60 working as subs. crossover sub/bass @ 70Hz, midbass/horns @400Hz

The first experiences with casted stone-horns:
pictures from the first try

The system of my friend:
my friends system
2*18´´ SPH450TC sub,vented, approx 25Hz-70Hz
4*10´´ A&D Audio R1030 in 40l closed from 70-400Hz plus the mentioned horn for the BMS4590.
The horns are composite horns (like mine) now, but will probably be substituted by the casted flowstonehorns.
Also DSP controlled (Lucius by Sitronik).

It has ben a long way, a lot of work but after all it was worth everything.
I´m in love with the systems. They sound very detailed and smooth, nearly fragile with nice femalevoices, really neutral with classical music.
But most fun is putting a good percussive jazz lp on the turntable and set the dsp on -0db.
They beat the sh** out of you and still are smiling.
They seem to say “What ? Is this the end with your ears ? Your kidding, I´m just getting started, I want more voltage…”
They are never getting harsh nor start to scream, no matter what happens.
I think the BMS is real bargain, it´s amazing, what you get for your money.
I´ve listened to commercial horn speakers like Avantgarde, Odeon and Cessaro at some acquaintances.
I think, my friend an me don´t have to bother….



Best regards, Michael

[AJinFLA]

Nice. Inspired by Jack Bouska's system(s) perhaps?

cheers,

AJ

[MiWi]

Hi AJ.
Sorry, don´t know Jack Bouska and his system.
Do you have a link ?
Michael

[MiWi]

Ah, found Jack on google.
Very nice, didn´t knew by now.
Thanks for the hint.

I got some inspirations from the Haigner horns.

Michael

[SamL]

Very nice look speaker you have build. Hope to see you more around here.

[MiWi]

Thank you for the warm welcome.
I like this place, so I´ll sure be around here more and more.

[SunRa]

Very nice sistem Michael!

Good luck with your future projects

[soongsc]

Hi MiWi,

Where do you get the material, and how do you make the mold?

[d to the g]

Not to get "too" off topic, but i'm drooling over the "chip5" pic on your website. very creative volume control.

[DorinD]

Very inspiring for me your search for the optimum horn system!
I said that as a horn lover. Now, I'm dreaming of a cast stone mid horn with coaxial-compresion and a midbass strait like B.Edgar's 80Hz...

Michael, have you any feedback concerning new B&C coaxial compression driver DCX50? Beside BMS and B&C I didn't find any else manufacturing coaxial compression drivers.