Koffergrammo/Portable phonograph versus Big Berta Gramophone

Klangvergleich zwischen einem Odeon Koffergrammophon und dem selbstgebauten Trichtergrammophon.

Comparison between a portable (Odeon No.3) phonograph and the homemade Gramophone.

Es wurde die Frage gestellt, wie laut den eigentlich der große papiermache Trichter sein (in db). Leider kann ich keine Messung durchführen.
Deswegen stelle ich hier mal einen Vergleich zwischen einem Koffergerät und seinem "großen Bruder" ein.

Eigentlich wollte ich den Klang mit einem externen Mikro abnehmen, leider schaffte ich es nicht, hinterher Audio und Videospur wieder synchron laufen zu lassen.

Deswegen fügte ich (auch nachträglich) wieder die Audiospur der kleinen Digitalkamera ein - fast synchron ;)
Leider ist das kleine Mikro mit der Lautstärke etwas überfordert, der Lautstärkeunterschied lässt sich aber gut heraushören....

Someone asked, how loud this setup will go in terms of dB. Sadly I can´t measure the loudness in db - so I made a comparison between a portable phonograph and the big horn gramophone.

First I wanted to pick up the sound with a external micro, but after that I couldn´t synchronize the Audio and Videotrack.
So (also thereafter ) I put the original sound of the little camera-micro back (almost synchron ;)
Sadly the little micro couldn´t capture the loud sound satisfyingly, but you get a good idea how loud this little beast is....

Category:

Science & Technology

Tags:

• phonograph
• gramophone
• diy
• homemade
• exponential
• horn
• papermache

[kirtley2010]

big berta it a beuty, not in looks but in sound, allthough i do like the brown/gold colour of it, i will have to make something similar, what method of paper mache did you use, four and water, pva glue, wallpaper paste or any others

[formiggini]

@kirtley2010 I used wallpaper paste plus c. 1/6 whiteglue (water based wood glue). Into this mixture I put plaster powder till it is still soft.

1 layer paper, 1 coat with this mixture and 1 layer paper. Dried for c. 3 days, then again 1coat of the paste, 1 layer paper, 1 coat and 1 layer paper. Dry it, next coat and so on.

All in all c. 15 layers of paper and paste. More nearer the neck of the horn. Here the thickness is c. 1 inch.

Write me a PM, if you have more questions :)

[VictrolaJazz]

Well for its size I think the small one comports itself quite well! But like the cliche says "size counts"! When I read the biography of WW II journalist Ernie Pyle, it told how in the early 20's when he was at Indiana U, they had a dance out on the quadrangle. To provide music, they took a phonograph to the science lab on the second story of a nearby building, placed the small end of a large funnel in front of the phonograph and the other at the window! Only in the 20's!

[petermackett37]

The large one wins easily!,fantastic sound quality!

[husbondensrost]

I image that your large horn gramophone could fill up a concert or dance hall with full rich sound. In terms of acoustical reproduction: large horn=better sound? Of course a good pick-up is also needed.

[Brillantspecial]

Klingt fantastisch Deine dicke Berta! ;-)