19/03/2012-12:36:08
(Modification du message : 19/03/2012-12:36:39 par jeanmichellcl.)
RE: Altec restauration suspensions
Bonjour,
Voici quelques photos et informations sur la restauration des membranes et suspension d'Altec 416 effectuées par Per Hassling :
http://www.haslingaudio.com/Alteccleaning/Pic1w.jpg
http://www.haslingaudio.com/Alteccleaning/Pic2w.jpg
http://www.haslingaudio.com/Alteccleaning/Pic3w.jpg
Mesures des courbes d'impédance à differentes étapes du traitement:
http://www.haslingaudio.com/Alteccleanin...391729.png
Altec 416A sn. 391792 hammertone. Restored surround / coating.
Red curve, state when bought, 148 Ohm free air impedance, resonance frequency 29,32 Hz.
Purple and blue curve, state during cleaning.
Green curve finished cleaning and thin coating. 328 Ohm free air impedance, resonance frequency 22,92 Hz.
Hasling Audio Systems. March 12, 2012. Per Hasling. Copyright.
Cordiales salutations,
Jean-Michel Le Cléac'h
Voici quelques photos et informations sur la restauration des membranes et suspension d'Altec 416 effectuées par Per Hassling :
http://www.haslingaudio.com/Alteccleaning/Pic1w.jpg
http://www.haslingaudio.com/Alteccleaning/Pic2w.jpg
http://www.haslingaudio.com/Alteccleaning/Pic3w.jpg
Mesures des courbes d'impédance à differentes étapes du traitement:
http://www.haslingaudio.com/Alteccleanin...391729.png
Altec 416A sn. 391792 hammertone. Restored surround / coating.
Red curve, state when bought, 148 Ohm free air impedance, resonance frequency 29,32 Hz.
Purple and blue curve, state during cleaning.
Green curve finished cleaning and thin coating. 328 Ohm free air impedance, resonance frequency 22,92 Hz.
Hasling Audio Systems. March 12, 2012. Per Hasling. Copyright.
Cordiales salutations,
Jean-Michel Le Cléac'h
