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Beogram RX

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Chris
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Chris Posted: Thu, Jun 20 2019 3:33 PM

Hello,

This my introduction. Yesterday I purchased a Beogram RX of dubious provenance. It has a cartridge attached that "doesn't work." Of course I came straight home and signed up for BEOWORLD.

 

My plan is to lurk around and understand more how this community operates to guide some of my next steps. My assumption is that I'll be buying a different cartridge.  I'm interested in finding out other tests to check out the unit.  Also, other issues that typically occur with this that I should be aware of.

Lastly, it is a "Beogram RX" there is a number 5773 printed on the bottom, and there is a serial number too. How do people here refer to specific makes and models to be most helpful?  Does 5773 point to a year of manufacture? A specific variant?

Are there any repair facilities in Southern California that have a good reputation for working with this type of turntable.

 

Thank you all.

 

chris_in_cal

Hiort
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Hiort replied on Thu, Jun 20 2019 5:11 PM
Welcome to the forum Smile

The number you found are a typenumber, telling this is the US version (120v) that was manufactured 1983 - Jan 1986.

The serial number will give the manufacturing year.

You can buy refurbished/new cartridges for that deck from e.g soundsmith : https://www.sound-smith.com/bo-cartridges

 

 

 

 

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DMacri
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DMacri replied on Fri, Jun 21 2019 12:19 AM
Hi Chris and welcome. You can just refer to it as an RX. Soundsmith does have a very good cartridge. The RX was meant to be used with non B&O equipment, which is why it has RCA cables instead of datalink. One of the best features is the isolation from footfalls this offers.

Dom

2x BeoSystem 3, BeoSystem 5000, BeoSystem 6500, 2x BeoMaster 7000, 2 pair of BeoLab Penta mk2, AV 7000, Beolab 4000, BeoSound 4000, Playmaker, BeoLab 2500, S-45, S-45.2, RL-140, CX-50, C-75, 3x CX-100, 3x MCL2 link rooms, 3x Beolab 2000, M3, P2, Earset, A8 earphones, A3, 2x 4001 relay, H3, H3 ANC, H6, and ambio 

Chris
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Chris replied on Fri, Jun 21 2019 3:33 PM

Great, 

 

So my RX, is a 5773 which means it is the 120v (north American) model.

It has RCA plugs instead of the more usual din.

The serial number is:  3255050 <--which can be used to figure out the date it was manufactured.

Originally it came without a cartridge and it was possible to use the MMC1-5.

--------------------

The cartridge in it right now that doesn't work is a MMC4.

-------------------

Also, must I buy a phono stage to use with this and my amplifier?   Would the new Soundsmith SMMC4 cartridge be considers a MM or a MC type of needle?

DMacri
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DMacri replied on Fri, Jun 21 2019 11:53 PM
So, yes you will need an RIAA preamp. The SMMC4 is an excellent cartridge. It is considered a low output MM type. You can search on this site, but the SMMC4 is a little brighter sounding than the B&O equivalent - MMC4. Many people prefer the more modern sound of the Soundsmith. The RIAA preamp sounds have just a bit more gain than a basic unit.

Dom

2x BeoSystem 3, BeoSystem 5000, BeoSystem 6500, 2x BeoMaster 7000, 2 pair of BeoLab Penta mk2, AV 7000, Beolab 4000, BeoSound 4000, Playmaker, BeoLab 2500, S-45, S-45.2, RL-140, CX-50, C-75, 3x CX-100, 3x MCL2 link rooms, 3x Beolab 2000, M3, P2, Earset, A8 earphones, A3, 2x 4001 relay, H3, H3 ANC, H6, and ambio 

Frina
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Frina replied on Wed, Jun 26 2019 3:01 PM

 

Hi there, can I ask you a question? So, my uncle swears that he'll make me a little present in my marriage. It will be the SPL Phonos ProFi like he was saying: "to fill our house with classic and clear sound" (man crazy a little on it). I have already investigated what is this (try this web-site) but clearly, don't understand why am I need it and for what. Thanks! Unsure

 

DMacri
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DMacri replied on Wed, Jun 26 2019 11:11 PM
Not all stereos have RIAA phono preamps, so this would be used to equalize and boost the signal to line level standard.

Dom

2x BeoSystem 3, BeoSystem 5000, BeoSystem 6500, 2x BeoMaster 7000, 2 pair of BeoLab Penta mk2, AV 7000, Beolab 4000, BeoSound 4000, Playmaker, BeoLab 2500, S-45, S-45.2, RL-140, CX-50, C-75, 3x CX-100, 3x MCL2 link rooms, 3x Beolab 2000, M3, P2, Earset, A8 earphones, A3, 2x 4001 relay, H3, H3 ANC, H6, and ambio 

Frina
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Frina replied on Thu, Jun 27 2019 8:54 AM

Thank you so much, it seems I need to read some more about this.

DMacri
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DMacri replied on Thu, Jun 27 2019 11:11 AM
Silver or Gold membership accounts have access to the extensive service and user manual collection.

Dom

2x BeoSystem 3, BeoSystem 5000, BeoSystem 6500, 2x BeoMaster 7000, 2 pair of BeoLab Penta mk2, AV 7000, Beolab 4000, BeoSound 4000, Playmaker, BeoLab 2500, S-45, S-45.2, RL-140, CX-50, C-75, 3x CX-100, 3x MCL2 link rooms, 3x Beolab 2000, M3, P2, Earset, A8 earphones, A3, 2x 4001 relay, H3, H3 ANC, H6, and ambio 

Chris
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Chris replied on Wed, Jul 3 2019 3:13 AM

With a nice referral from the good people here at BeoWorld, this morning I shipped my MMC4 cartridge off to be rebuilt, as opposed to buying a new one from Soundaudio.  Nothing against them, but it was a tiny bit cheaper, and why not "reuse" rather than "replace."  

 

Thank you,

 

chris_in_cal

Steffen
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Steffen replied on Thu, Jul 4 2019 10:46 AM

chris_in_cal:
Also, must I buy a phono stage to use with this and my amplifier?   Would the new Soundsmith SMMC4 cartridge be considers a MM or a MC type of needle?

I understand if you are a bit confused. Most pickups are either MM (moving magnet) og MC (moving coil) types. Most common is MM types.
B&O had their own type: MMC - which means "Moving Micro Cross".
The MMC design was invented and patented by Bang & Olufsen. The MMC cartridge is a variation of the Moving Iron (MI) design. Magnets and coils are stationary while a micro cross moves with the stylus, thereby varying the distances between the arms of the cross and the magnets. It is claimed that the MMC design allows for superior channel separation, since each channel's movements appear on a separate axis.

I'm sure that people wiser than me can explain the differences between the other types Big Smile - or just try searching MM/MC on the net.

Steffen
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Steffen replied on Thu, Jul 4 2019 12:34 PM

-here's the MMC:

Chris
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Chris replied on Sat, Jul 6 2019 3:59 AM

Steffen, that is fantastic. Thank you.

 

Chris
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Chris replied on Wed, Sep 18 2019 6:55 AM

What is the best practice for shipping a Beogram RX?

 

Tie down the arm?  How should it be packed? Broken down? What are the basics for safely packing up a this Beogram and shipping it?

 

I understand the box and the padding part, it is the 'preparing the beogram' part I'm interested in. Thank you.

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