Martin? Hvem er det?
Det kan godt være du har ret i, at der ikke er den store forskel. Det var som sagt kun noget jeg havde læst.

På Beoworld hedder han Dillen og er moderator der samt at han er old school B&O "guru" som har serviceret en del af mi B&O
hobby med stort UG!!

Jeg kan sende dig kontakt info hvis du ønsker det.

Ja det må du gerne, jeg har godt hørt om ham.

Jeg har lige set bagsiden af en Beovox MC120.2 og mit par hvide Beovox S120 viser den mest nævneværdige forskel!

S120 tager DIN stik og MC120.2 tager DIN + RCA så du har 2 valg for tilslutning. Det har S80 ligeledes.

Så images for MS150 må kunne bekræfte det for S120/MC120.2 kørte på samme tid.

Ja den forskel kan man også læse på beocentral og beophile, så den må være god nok. Jeg har dog kun fundet et sted, at mellemtonen og delefiltret
skulle være ændret. Men hvis den ene forskel er, at den tager DIN + RCA, så er det jo lidt lige meget, hvilken model man får fat på.

Ok min teori er korrekt her først MS150:



Herefter MS150.2:

Hmmm...

Fejl

MS15.2 er først
MS150 er sidst

Lige omvendt, men ellers ja. Det kan også ses, at mellemtonen har fået en anden farve på .2'erne.

Undskyld afbrydelsen !

Jeg kigger på en Beogram 4002 med en MMC4000 pickup, er det en god pickup til denne pladespiller eller findes der bedre pickups til denne
pladespiller ?

I følge Beoworld er MMC4000 den orignale pickup for en Beogram 4000:

http://www.beoworld.org/article_view.asp?id=69

This pick-up cartridge was specially designed for use in Bang & Olufsen record-players with tangential arms. It was designed
to track SQ 4 channel matrix records and tracked both mono and stereo records extremely well. It was fitted to Beogram
4002. The stylus was an elliptical naked diamond, radii 5x17u. Recommended tracking force was 1g. Each MMC 4000 was
designed as an integrated unit. This meant that all critical components were designed and constructed as an entity in order to
give optimum performance. The stylus unit was not separately replaceable as it was part of the integrated unit. Frequency
range was 20-30,000 Hz ± 3 dB. Effective tip mass was a mere 0.5 mg and compliance was higher than 30x10-6 cm/dyne.

En opgradering til ville måske være MMC6000:

Bang & Olufsen's (then) most accomplished pickup cartridge was fitted to Beogram 6000. The MMC principle was adapted to
track 4-channel records: both Quadradiscs and SQ. MMC 6000 would track both mono and stereo records with the utmost
fidelity. It was designed for record-players with tangential arms. The stylus was the Pramanik diamond, named after its
inventor: engineer S K Pramanik from Bang & Olufsen's Laboratories. The diamond's radii were 7 um/2 x 50 um. It was a
refinement of the elliptical shape, rather like the shape of the cutter-head, and enabled greater contact with the undulations
of the record groove. The cantilever was made of berylium - a material which is harder yet lighter than popularly-used
aluminium. Effective tip mass was 0.22 mg. Compliance was higher than 30x10-6 cm/dyne. Recommended- stylus pressure
was 1g. The total frequency range was 20-45.000 Hz. In the audible range: 20-15.000 Hz there is less than 1.5 dB variation
and in the inaudible range 20,000-45,000 Hz where the carrier frequencies lie, the pick-up fulfils RCA/JVC's specifications for
a Class A discrete 4-channel pick-up cartridge. Each cartridge is an integrated, individually calibrated unit. The stylus unit is
not separately replaceable since it is part of the integrated unit. An individual frequency response curve traced on a Bruel &
Kjaer level recorder and a complete Calibration Card were enclosed with every MMC 6000 sold.

Men det er som om at det kvardrofoniske er mest forskellen på de 2.

Derfor må en konklusion være sørg for at pickuppen er frisk. Det er det bedste du kan gøre.

De blev købt sammen originalt, det er både en god pickup og
pladespiller.