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Dave Parkinson, Paul Newman, Nick Lucas and Tina Ford We have worked closely with Charcroft Ltd for some years now, supplying us with their wonderful Z-Foil resistors and their Charcroft Silver Mica capacitor furnished with silver lead-outs. We have met up with them numerous times and enjoyed a visit to their HQ in Wales. When we heard of the news that they had recently acquired ICW ltd /…
A little photo journal from a customer of ours detailing their classic 300B amp upgrade project. Also, includes a helpful circuit diagram. They report in, “Sounds warm and mellow, but makes you sit up and listen, never jarring or shouty. Wonderful piano and voices.” Specs: 6W. Cathode/fixed bias 51v / 750 ohm / 68mA. 300b plate 415v 25W dissipation. Modern floor standing 2 way speakers 91 dB 6…
Monitor Audio Bronze BX2 Speaker Upgrade. written by David Ross “To modify or replace”, that is the question I recently asked myself, regarding the Monitor Audio Bronze BX2 (2010-2015yr model) speakers that I purchased new back in 2013. These speakers were highly acclaimed when they came out, & still sounded good. However, being very picky, they suffered from bass boom/resonance via the…
After seeing our Crossover Upgrade video on Youtube a customer was inspired to do his own modifications. Instead of replacing all the components, he decided to only replace the components that the signal travelled through to get to the speakers. The other components that send the unwanted signal to ground were left intact.   Images of the components used, including the highly regarded Auricap…
Images from a valued customer of his setup centred around a The Elekit TU-8200R kit With a description of his setup below, VPI Classic 3 turntable with a Lyra Delos cartridge ASR Mini Basis Exclusive Phono Gamit CD3 player ELEKIT TU-8500DX pre amp C/WTakman resistors, Audio Note / Amtrans caps. Am waiting on the Shindo so it can move back upstairs into the office Silver Circle Audio power…
P A Coupe from Reference Fidelity Components has been an associate of Hi-Fi Collective for some years. A keen and passionate enthusiast of all things Hi-Fi and he spends hours listening to his creations to wonderful effect. So have a read of his wisdom as he takes a view on loudspeaker crossovers. Passive crossover parts Quality/Spec determination – Part 1 Passive crossovers are one area of hi-…
Hi Guys,   I would like to pass on our best wishes to you all and thank you for your continued support during these difficult times. It would appear that you guys have been incredibly busy upgrading, doing scratch builds, and renovating your old equipment during the lockdown period. I feel the DIY industry is very buoyant at the moment. Our partners have been able to send out deliveries to us…
  Here we have a blog post sent in by Mr S.C., regarding a recent build using a 2A3 circuit:     "They sound pretty good: engaging, natural, musical. This is quite surprising, especially considering that the 2A3's being used are only the basic Psvane "Hi-Fi" grade, and also that the interstage & output transformers are only Hammonds, which aren't the most outstanding sounding 'irons'…
  Back to the resistor bake-off - written by jaudioresearch Before I started my tests, I did put around 2 days of music through each resistor to give it some burn-in time as some manufacturers do recommend. Two days, in fact, is not much, as some people claim, that let's say Path Audio resistors take at least 100 hours to sound at it's best, either this phenomenon has something to do with a…
In this blog we see one of our Glasshouse passive pre-amplifiers being combined with a 48 step 10K Khozmo Stereo Series Stepped Attenuator.    In the words of I.L:  "A fun and easy build, the only difficulty was getting the tip of the iron into some of the smaller spaces (it gets a bit full with all the wires in place). The output pins on the Elma switch don't have tags either, which caused…