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Hi,
Can you give me some opinion about HT5700/5702 with passive radiator. It's really hard to find something about it. Only short note in Beocentral and here... but when I try to find something about M70 , M75, M100 I can read that 5700 or 5702 was one of the best sounded Beovox.
Hmmm... 🤔
Marcin
That's what I found myself here and there:
- 5702 and 5700 had the same high HF2000 and medium MD500 tones. Both are Celerions the same as in Celerion Ditton 66. At that time, one of the best in class.
- 5702 had a Philips AD1056 woofer, as high class as Celerion. AD1056 has Aluminum Nickel Cobalt magnet (Alnico)
- 5700 were two types with different woofers. Early with Philips AD1056 and later with Philips AD10100 woofers. AD10100 already had a ceramic magnet. They differed slightly in frequency range. I found Philips documentation.
All types had a passive radiator (ASR) 5702 had the early model KEF BD139. Beovox 5700 had ASR Celeriona similar to Ditton.
Next question:
Two types of Beovox 5700: 6229 (1972 - April 1974) and 6253 (1972 - June 1975). 6229 with Philips AD1056 and 6253 with Philips AD10100.
Beovox 5702 had two types too: 6251 (1971 - Oct 1973) and 6257 (1971 - Jan 1975); Is it the same diffference like in 5700, in woofer ?? Earlier with alnico, later with ceramic woofer ??
Because nobody said nothing I bought one pair to test :
I have not seen a pair in the UK as although they were available, we also had the 3800 which had a bigger bass drive unit and for archaic reasons was classified as a professional speaker and did not attract purchase tax making them far cheaper! Yours look like a good pair - I am sure however that Martin will know all about these!
My B&O Icons:
Hi Peter, I bought this 5702 in UK 😁. I think it will be in my home next week.
I bought it because I used KEF 104aB and I remember this incredible "British" twitter and midtone sounds. In KEF I had not enough bass. I think that this Philips AD 1056 have more bass with the same good hi and midtones.
Well, Type 6257...
In my notes are two different speakers for this type number;
One is a UK model that I don't recall seeing here but seem to remember being quite identical to the other 5702s.
The other is a fairly large three-way speaker with added amplifier made for use as a Studio Monitor for the danish broadcast (Danmarks Radio),
using the Celestion tweeter and midrange but a 12-inch woofer and no ABR if I remember correctly, rated at 200W.
Martin
Found these in my notes:
(Not sure who took these photos).
Martin
Oooo... It's very interesting. Thanks @Dillen.
I bought standard 5702 model type 6251 serie 01 number 12063. My photo is from a seller, all drivers looks like new and are fully worked . It's early model and it should has alnico magnet (AD1056) or I'm wrong??
Marcon
It is from "Stereo review" magazine :
It is about 5700 but I hope that 572 was similar.
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