608 High Fidelity Stereo Amplifier... What a beauty

35 replies

Villhelm, Looks brilliant, didn't realise you had both!

Theo, Yes, I do collect vintage stuff. Got 2 Beolit 500s you're after, but they did take me a while to find! I will post some pictures of my older stuff when I get the chance, but I'm studying at University now so all my new projects are waiting at home! I will start that thread next week as well.

Regarding the 2500s, they aren't in brilliant shape, someone has resprayed them at some point in their life so they need quite a lot of work, but they work and are structurally sound. The stands are really nice!

In the UK it is more difficult to find pre-1964 stuff, but I do have a few bits like the 610, Type L speakers, an early Beomaster 900M for instance.

Lots more that I'm after though, I will post some pictures when I'm home!

Ben 

@Villhelm

Very nice picture! That's what we love here, pics of old vintage B&O, lot of them  🤒

And how nice see them together, brother and sister, 608 and 610 ... 🙂

Obviously you are experienced with valves / tubes. I have a question for you.

I have one 608 refurbished by ex-B&O technician with 30 years experience (all elco's and some other parts changed!) and honestly I can't hear any difference to the second 608 and to the 610 I also own. Actually I would say this 608 now has even 10% lower volume level as other 2. Is it normal, did you have similar experience?

Does the refurbished 610 sound much more better for you as the 608 which is in original condition?

Best regards

Ben wrote:

Got 2 Beolit 500s you're after, but they did take me a while to find!

O, does it mean that you can sell me one? 😁

Ben wrote:

Regarding the 2500s, they aren't in brilliant shape, someone has resprayed them at some point in their life so they need quite a lot of work, but they work and are structurally sound. The stands are really nice!

Did you buy those sprayed grey in Ebay few weeks ago?

Ben wrote:

In the UK it is more difficult to find pre-1964 stuff, but I do have a few bits like the 610, Type L speakers, an early Beomaster 900M for instance.

Same here in Austria. Everything B&O produced before 1965 is very hard to find. Only from collectors and they are very few... I am trying to find the pre1965 B&O stuff on the danish web sites. Luckily the Danes are very fine people, most of them are ready to send their items to overseas. Unfortunately their shipping companies are not the cheapest...

Ben wrote:

Lots more that I'm after though...

Please do not say that ... How true for lot of us here 😮

BR

The 608 HiFi Amplifier.

When you restore your beautiful set ....... If you need to replace the rectifier.

The original rectifier is selen and to day you will use a silicium rectifier.

The internal resistance is very different for these two parts.

This means in practical the supply voldtage will be much higher than the circuit is designed for.

You will have to add a serial resistor.

Send me a PM and I will send you a suggestion - circuit diagram.

/Frede

When I get myself sorted I will see about that 😕

I did buy those ones, not that cheap, but unusual to see in the UK and I wanted a project! I will keep you posted with how it goes on the new thread!

Ben

Reviving this thread as I have just purchased a 608 that was on an auction web site. It does not have a case. I assume the cases are nye on impossible to find? If I have to I believe I can reproduce on fairly easily. I notice that the specs for speaker impedance are 4 and 16 Ohms - any difficulty with using 8 Ohm speakers? Anything a first time owner of a piece of vintage B&O equipment should know? Any speaker suggestions. I have available Heresys (currently in use on my main system), KG 2.5s, NS-10Ms and a pair of Paragons in my stock. I could trade off some of these and add something else.

I'm not sure yet where the 608 will go in the house but want it to be somewhere I can enjoy it as much as I do my main system.

Thank you

 

Welcome to Beoworld!

What a beautiful machine. Well done for finding it. In terms of speakers, original B&O speakers which would have matched this amplifier would have been Type K or Type M or S. All fairly difficult to find nowadays but there are some available if you keep your eyes on european sales sites.

In terms of your outer case, I would be very surprised if you could find either a unit for parts (you shouldn't break one of these up really!) or a spare lid. Therefore I think your best bet is to try and get one made. They were originally in teak and rosewood.

I am also not sure that your loudness and filter knobs are original either. They may be able to be sourced though.

Your speakers should be fine as well, these are pretty powerful amplifiers and they have a lovely warm sound. They are best enjoyed with period speakers though!

Enjoy it

Ben

 

Thanks Ben - I have a Macintosh set that drives the Heresys (it had AR3as when my father purchased it in the '60s. I agree that I enjoy having a system made up of similar vintage components if not the same brand. 

As to the case - I figured it would not be possible to find one - I assume the piece I have purchased was built in. I can probably reproduce one myself. One of the things I love about tube equipment is being able to see the tubes. How hot do these units run?

I am lucky to have a top service guy in my area who is already looking forward to seeing the 608 and giving it a once over. Anything I should direct him to?

If a pair of Type S are unavailable would the Beovox 1000 be a suitable pairing?

This looks great - I'm really coming round to the pre-65 styling so am a little bit envious 🙂

Location: Nottingham, UK

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