Blog
Over a year ago, we had a client ask for some advice on their ‘replacement parts’ proposals for an Audio Research Reference 1 pre-amp. Six months since the last parts were ordered, here’s P.B. talking us through what he’s changed and the result!
"Power Supply Stage:
1) 2 x sets of ‘industry-standard’ diodes replaced with 8 x UF4006 ultrafast or 12 x Shottky 8QT-100
2) 15 x…
Hey everyone,
We recently got in some ABS Expandable Sleeving that can be used to wrap the outside of your cables to help with ground and electrical interference problems. This can be especially useful for longer cable lengths, or for audio cables that are running in close proximity to power cables/sources. Use this cheap fix to decrease hum, reduce noise floor, and to bring back some of that…
Hi Guys
How valves sound is a question we are often asked here at HFC. We thought we would start the ball rolling with the 6L6s tube comparison session. Let me introduce our new recruit - Elliot Leech. Recently graduated from the Liverpool Institute of Performing Arts, Elliot is a talented individual, having already worked as a producer/session player/audio engineer with artists from Boston…
Recently replaced components in the output stage of a modified Meridian 201 preamplifier have been given time to “bed in”, although from the onset it was clear that there was a noticeable improvement in sound quality. The resistors replaced Vishay bulk foils and the capacitors replaced Rubycons.
Examples of tracks which were used at random for listening tests, as I know them all well;
Jungle/…
Everyone is familiar with screened interconnect cables;
The screen is soldered to the earth at the source end (pre-amp), and attached to the earth of the plug, with the signal wire soldered to the signal pin. At the target end (power-amp) the screen is cut short (and either soldered over or use heat-shrink to make sure there are no stray wires) and the signal soldered to the signal pin, and the…
This is a brief guide on measuing C-Coils from Jantzen, as they cannot be measured as simply as other inductor types.
"As mentioned in our website, you cannot measure C-Coils, like you would measure normal induction coils.
First of all you need a professional LCR meter or CLIO, measuring at 1 volt 1 kHz.
Secondly you cannot measure the coil on its own, because even with a professional LCR…
We have recently recieved a very large delivery of F&T capacitors to re-stock those ever-popular values.
There are also 8 new values;
F&T Axial: 47uf, 100uf, 150uf, 220uf all rated at 250v and 220uf 500v
F&T LFA Radial: 100uf 350v, 100uf 500v and 150uf 160v
For more information on these products please click HERE
I have recently made a pair of Zigmahornets for my study. I used a pair of FE103en full range drivers and later added a pair of FT17H super-tweeters. BSC and crossover circuits were constructed with components sourced from you. The cabinets are MDF and finished with chalk paint. They sound fantastic for the price. Imaging is spectacular and worthy of speakers costing many times more. They are…
Here we have a pair of short, 1 metre, speaker cables featuring Audio Note`s new Isis LX 168 Reference Copper Litz cable terminated with Audio Note Silver Plated 4mm banana plugs.
On the odd occasion we do get asked to make up special cables for customers, which we are happy to do. Now Audio Note cables are generally litz cables. Whereby every strand is polyurethane coated, the benefits of litz…
Here we have a fabulous single ended amplifier home built by Barry in the UK. Shown here is his second version of the famous Loftin White circuit with a few twists.
As the picture illustrates they are monoblocks; each with their own power supply. The chassis' are Hammond wooden edged, metal top plate type - a simple design that requires a little handy work but very easy to work with. The walnut…