Skip to main content

Posts

Showing posts from September, 2011

Trio Kenwood KD-1033 turntable main bearing service

  One of my first posts in this blog was regarding the servicing of the Pioneer PL12D turntable, and that has proven to be the most popular by a significant margin. The Pioneer PL12D had its competitors, and probably the most popular alternative was the Trio Kenwood KD-1033 turntable. I use both names (Trio and Kenwood) as the company operated under different names in different markets. In the UK they were Trio, possibly because the brand Kenwood was most famous here for food blenders. 95% of a KD-1033 is similar to  Pioneer PL12D, and servicing them is very much the same process. Both are belt drive , have an AC synchronous motor,  mechanical speed change , a main bearing, sprung top deck and rubber motor mounts. the KD-1033 uses a different type of anti skate mechanism, employing a thread and weight. The plinth is shallower with an internal cross brace. One aspect that is different is the design of the main bearing, and servicing it is a little harder than a PL12D. The ...

6watt LED GU10 bulb

If you have seen my other blogs regarding GU10 & MR16 bulbs , you will know that I now favour LED replacements where possible. It's becoming something of an obsession. I retain a few halogen bulbs in my kitchen where total brightness and light quality (i.e orange/yellow warmth) are important. I noticed that the online retailer simplyLED were offering a 6watt(55watt equivalent) LED bulb . I've purchased from simplyLED before and found their service very good, with a no quibble returns policy. I ordered one to try, which arrived the next day The flash from the camera is being reflected back by the bulbs rear reflector, so looks like it's on ! As you can see this bulb is longer than a halogen, so suitable for open-backed fittings or where the bulb is only secured at the base. Other types of fittings may not have enough clearance. In the picture above , the closest light is the 6watt LED , while the other lights are halogens. I would say the new bulb is brighter, hard to g...

Mending a pair of M-AUDIO BX5a monitors

One of my sons friends asked me if I could take a look at his speakers which had stopped working. he and my son had been mixing some songs using a pair of M-AUDIO BX5a monitors. These are bi-amped active speakers, with Pro audio style inputs (XLR and 1/4" mono jack). They each have two integral amplifiers so only need a line or balanced input. Each speaker also has a mains power input and a volume control, and a blue LED on the front to indicate power. The speakers have two drivers, a small domed tweeter and a small 5" Kevlar woofer. One had developed a loud buzz, coupled with a very loud 'thump' sound when powered off. The other had completely lost all bass output.The speakers were only 13 months old, which seemed a very short life for a pair of speakers - I have speakers made in the 60's that are still going strong. However with additional electronics in these BX5a's I'm not really comparing like with like.These speakers are self contained audio system...