The left hand amplifier is a single ended pentode kt88. I needed more power to drive my speakers so built this beastie! The surround is two inch thick Beech, and the top and the raised section are black 8mm acrylic. The transformers are hidden inside the raised section. The little preamp to the right was an experiment and was bashed together to look at least a little similar......................
This one was a push pull amp that caused me some headscratching. The output transformers are under the covers on the right and the heater transformers inside the chassis. The power supply is in a separate ugly box.
It was inspired by a Gibson guitar body
It was inspired by a Gibson guitar body
Here we have 2 different components. The top one is the first amp i ever built, a 'Rocky' single ended el34 amplifier. The transformers are hidden in the potting boxes from bluebell audio, and the chassis was wooden but sprayed gunmetal coloured. You cant really see, but the top plate is actually made from synthetic slate! The deck is a lenco gl75 with a home built arm on it, it used an aluminium unipivot bearing and carbon fibre arm wand. It was made from lots of layers of ply and hardwood then sprayed.
This one is a 300b driven by a c3g. This one was huuuuuge. I never finished this amp unfortunately as the costs for the transformers got silly, and i was never that fussed about the looks. What do you think?
Im very pleased with this one. This is my nuvistor phono stage. The visible valve is an ez81 rectifier, and the nuvistors are inside the lower section on stripboard with the circuit itsself. The raised section holds the power supply and heater supply.
The case is made from 8mm beech strips with a waxed finish. It was shaped so it matches the contours of the inca design katana cd player. Love it!
The case is made from 8mm beech strips with a waxed finish. It was shaped so it matches the contours of the inca design katana cd player. Love it!
These are my Metronome bipole speakers built from the plans on the frugal horn website. They use two Mark Audio chp70 full range drivers and are fantastic sounding speakers. They look superb too.
These were a pair of tqwt type speakers i designed myself. They used twin Mark Audio chr70 drivers. They werent the best lookers, but they did the job.
This was the last incarnaton of the 6sl7 preamp i built. I wanted it to look like the top plate, baseplate and transformer cover were made from milled alloy. They werent, it was just sprayed mdf, but it did fool a few people. It was a very very simple circuit.
Here is one of my favourite amps. It was a push pull 45. It took alot of doing to get it sounding right, but when it did, it was utterly superb. As 45s are. I eventually changed it to use 2a3's instead to get some more power out of it.
This is a 'simple el84' amplifier i built for a friend in the armed forces. Not shown is the power supply box which matched, and is what started my love of black acrylic as chassis top plates. A lovely simple amp that gave many hours of pleasure.
Another amp i never finished, i built it but i never got it working. It kept blowing its cathode bypass caps on the drivers. Too much voltage on the anode with hindsight. It was a choke loaded 7044 driver if i remember correctly.................. Shame as this was on of my favourite chassis designs.