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View Full Version : Just a little pair of monoblocks [emoji1787]


andyrlb
28-10-2022, 11:20
Just collected these , the guy said they’re a bit heavy ! HEAVY!! I reckon 60kg’s each

1000w each too , I think I need to let the National grid know before I plug them in ( not sure I want to )

Built by a medical doctor who’s passion was electronics and especially hifi .( now deceased)

The son explained that they’re 1000w each and drove a set of 4 speakers, the 2 front speakers were around 6” tall and he used some ATc’s as the rears , apparently each one has triple outlets, treble, mid and bass , the builder had altered them at some point ( whilst Alzheimer’s kicked in ) to be bass and mid/treble , might explain the brown wire that’s lose .
I’m a little nervous about powering them up , what do reckon?


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walpurgis
28-10-2022, 11:46
They look vaguely familiar somehow. I wonder if they're anything to do with Colin Wonfor?
andyrlb
28-10-2022, 11:49
They look vaguely familiar somehow. I wonder if they're anything to do with Colin Wonfor?

The son thinks they’re a Lindsley hood design.


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andyrlb
28-10-2022, 11:55
Got this one too while I was there …

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CageyH
29-10-2022, 07:46
the 2 front speakers were around 6” tall

So much power for speakers so small. :)

Do you have a friendly electrical engineer that can have a look at them for you?
If not, then be very careful. Being modified by someone with Alzheimer’s would concern me. They may be perfectly ok, or they may not.
Did you ask his son when they were last used?
Do you have a copy of the circuit design?
andyrlb
29-10-2022, 07:53
So much power for speakers so small. :)

Do you have a friendly electrical engineer that can have a look at them for you?
If not, then be very careful. Being modified by someone with Alzheimer’s would concern me. They may be perfectly ok, or they may not.
Did you ask his son when they were last used?
Do you have a copy of the circuit design?

Fear not I’m not going to power them up at all .
Last used around 10 years ago and built around 20 years ago ( transformer dates to 08/99 )
To be honest I didn’t realise just how big and heavy they were until I arrived to collect them.
No circuit design or schematic available.
The son thought they were a lindsley hood design but I think he meant the other little amp that came with them ( pictured)
I think my best option is to strip them for the transformers and sell them which seems a shame .
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struth
29-10-2022, 08:03
a bit of a frankenstein's monster that... would be good to get them looked at by a pro.
andyrlb
29-10-2022, 08:07
a bit of a frankenstein's monster that... would be good to get them looked at by a pro.

Totally agree Grant , my initial thoughts were to simply transfer them into more modern cases but clearly not an option for one as simple as me but for a pro they may potentially be desirable.
The son said the sound was incredible and his dad would have fellow hifi nuts coming to hear them.


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Pharos
29-10-2022, 09:20
I would find that a daunting project. The construction is rather messy, and th condition speaks for itself - a hell of a lot of work to do there to fell comfortable using them.
Gregje
05-12-2022, 15:51
I see the parts are for grabs at diyaudio. So you haven't powered up?
I would be scared too tbh.
Also these heatsinks would be wasted on a 1000W amp. Better to to convert to some toasty low wattage inefficient class A amp. Well, maybe not that low wattage after all...
andyrlb
05-12-2022, 16:40
I see the parts are for grabs at diyaudio. So you haven't powered up?
I would be scared too tbh.
Also these heatsinks would be wasted on a 1000W amp. Better to to convert to some toasty low wattage inefficient class A amp. Well, maybe not that low wattage after all...

Yes mate , I would have had EON coming around had I powered them up , I found pinched transformer cables that were bare squashed against the chassis.
The heat sinks are the nuts , proper old misers on diy though! One member offered Ł40 for all 8 [emoji1787]
Funny enough they’re almost identical to the heat sinks used on their diy store mofo amps.


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