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  • Re: Beomaster 1200

    SW version a beautiful rare beast indeed.
    Posted to The Workbench (Forum) by Krolroger on Mon, Dec 16 2019
  • Re: Beomaster 1200

    Gents, Hence my suggestion of an entry level CNC router such as this for GBP 120: https://www.ebay.co.uk/itm/CNC3018-PRO-DIY-CNC-Router-Kit-Engraving-Machine-GRBL-Control-3-Axis-PVC-TK-V2T8/233364263982?hash=item365598142e:m:mm8xH5-0BRW13FGs6v6dXxQ The original cursors were injection moulded as Martin says, but 3mm cast acrylic sheet (the only suitable type for milling) can be bought for a few quid on that auction site and makes a presentable, non yellowing alternative with better clarity. Out of
    Posted to The Workbench (Forum) by Krolroger on Sun, Dec 15 2019
  • Re: Beomaster 1200

    Thanks, all. The stereo lamp is on but only dimly. Lamp values are all correct. I will check out what's going on round Tr 15 and TR16 which is where the stereo indicator is switched.
    Posted to The Workbench (Forum) by Krolroger on Sat, Dec 14 2019
  • Beomaster 1200

    Hello all, Just finishing off a BM 1200. It needed a recap and replacement of some presets, lamps and a broken volume poti. I spent some time making a new cursor out of 3.5mm acrylic sheet by hand. Filing the slim flanges at either end was tedious work and I'm looking at CNC machining sliders out cast acrylic sheet in the future as the price of DIY CNC machines has fallen rapidly. Has anyone had a go at this? The cast aluminium sliders and tuning slide came up well with etch primer and aluminium
    Posted to The Workbench (Forum) by Krolroger on Fri, Dec 13 2019
  • Beovox 1702

    Hello there, I am looking for a woofer (8480098) for a Beovox 1702 if anybody can help. Regards, Simon (London, UK)
    Posted to BeoWorld Private Wanted (Forum) by Krolroger on Wed, Nov 13 2019
  • Re: Beovox S120

    After four applications of Danish Oil with the final one applied with an ultra fine abrasive pad, I have a satin finish that shows the veneer matched cabinets well. The sound of these is utterly different to my more coloured S55 Beovox. The S120s are transparent, accurate and more present for a given volume setting. Bass is certainly not absent. I notice a very slight tendency to shrillness. Recorded piano sound is always a good test, and these pass. The spoken voice is another good test, and I'm
    Posted to The Workbench (Forum) by Krolroger on Sun, Jun 30 2019
  • Re: Beovox S120

    The S120 is a bass reflex speaker and the reflex port is at the bottom of the cabinet shown here. I thought conventional wisdom has it that the enclosure shouldn't contain too much sound deadening or the reflex function will fail to work. Also, peculiarly, the gasket sealing the resin loudspeaker plate to the cabinet only extends a short way down the sides of the enclosure.
    Posted to The Workbench (Forum) by Krolroger on Tue, Jun 25 2019
  • Re: Beovox S120

    Gents, thank you for your input. Neutral is what I like. I have recapped the crossovers. Reichelt Elektronik is a good source for these TREC branded bipolar audio caps at around €1 each but it remains to be seen (heard) whether I end up reinstalling the old Roederstein 'golden bullets' which are still perfectly within spec. Recapping crossovers is one of those articles of faith that deserves to be challenged. Now onto the rosewood cabinets. A bit of sawdust and superglue makes a good
    Posted to The Workbench (Forum) by Krolroger on Fri, Jun 21 2019
  • Re: Beovox S120

    And the dustcap back in place.
    Posted to The Workbench (Forum) by Krolroger on Sun, Jun 16 2019
  • Re: Beovox S120

    The foam in the centre of the pole piece underneath the dustcap is pretty fragile after nearly forty years. I gave some thought to replacing it with some similar open cell foam, but decided against. Not sure what it does. I used three 0.1mm shims cut from acetate sheet to centre the cone. However, on both speakers, the cone is not exactly concentric with the basket which involved slightly offsetting the new surround.
    Posted to The Workbench (Forum) by Krolroger on Sun, Jun 16 2019
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