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Marco,

It must be your Italian ancestry that keeps the passion going. I have French ancestry and this is probably where my liking for good food and wine comes from. I will place a visit at the top...

Hi Marco,

I am fine thanks. I hope you and Del are keeping well and enjoying yourselves.

North Wales is on hold for a while, as we need to finish renovating the house here before selling it to...

Hi Grant,

Yeah sure, just move to the outer rim of the known universe and become a hermit.

Hi Robbie,

How are you keeping lately?

Hi Anthony,

A while back I decided to upgrade my vintage CLK sound system. I like a BIG sound and realised there was no way I could fit my dream car sound system in the CLK chassis so I had a Tardisdrive MKII...

Hi Paul,

I have sent you an e-mail regarding shipment.

Regards
Paul

Hi Jez,

I haven’t spoken to Anthony since last year and I did not know him when I wrote the Common Ground articles. I re-published the articles because a number of people were expressing interest...

Hi Stephen,

Sorry I cannot offer any advice on low cost 78/79 upgrades as the worthwhile ones will set you back a few tens of £s each. Whether it would be financially worthwhile would really...

A long time ago (around 1996 I think), in a galaxy far, far away I was asked to write a series of short articles about power supplies in an underground audio magazine called Common Ground. There has...

Hi Martin,

No problem with the editing. I am still considering if additional information would be useful, and whether to provide the original drawings, if anyone wants to experiment. So the layout...

I have been preparing content for a technical resource that I intend to include in a new website later this year and the following OB loudspeaker project I am including in the resource may be of...

Hi Marco,



I am not sure there is anything that you could do to help with getting things done up here, but I am all ears if you have any ideas. This area is designated a priority area for...

Hi Will,

If a NAS supply is of poor quality any voltage variations on the supply line caused by noise, transient overshoot and ringing in the power supply system can feed through into the signal...

Hi Marco,

I’m more or less OK again now, thanks. Unfortunately it would appear that I am no longer invincible and I will have to pay more attention to my health in future. I am working on getting...

Hi Marco,

Aside from the obvious noise issues and supply line pollution with switching supplies, the regulation and supply line interference rejection of all but the high end types leaves...

Hi Jez,

The ZTX’s maintain decent Hfe in the circuit with standard values with a quiescent current in the region of 250 microamps so they are a good choice for this circuit electrically. I have...

I have been playing around with the circuit using ZTX651 and ZTX751 in my plug-in breadboard. With circuit values readjusted to work with an Aerospace 6v spiral wound lead acid gel battery that I use...

Hi Marco,

Undoubtedly each of the components used in the Lentek circuit will have a sonic signature, but as Jez points out, changing components may upset the sonic balance and the only way to find...

Jez, I guess you are a hoarder too!

Incidentally, for anyone considering building a Lentek head amp for themselves, the 2SA1085 and 2SC2547 with a source impedance of 100R both have a noise factor...

Jez,

The resistors with the brown body in Alan’s photo were indeed thick film metal glaze. The resistors with the grey body were metal oxide. I still have quite a few of both of these resistor...

I have to side with Jez on this.

The Lentek circuit is simple and elegant in its concept. Input DC bias is from one base to the other and the base terminals are referenced to ground by the 100R to...

Hi Neal, Andy,

Thanks for the support. Interesting times ahead.

Regards
Paul

Hi Josie and Rob,

Sorry for the tardy reply. I have been off work for a few days with one of the nasty little viruses that circulate at this time of the year.

Thank you for your support. I’m...

Paul Hynes Audio Ltd Closure

The closure of Paul Hynes Audio Ltd is a sad day for both David Webb and myself but circumstances in life change and projects do not always go according to plan. David...

Paul Hynes Audio Ltd Closure

The closure of Paul Hynes Audio Ltd is a sad day for both David Webb and myself but circumstances in life change and projects do not always go according to plan. David...

Hi Marco,

I’m fine now thanks and gradually getting the home life under control.

I hope you and Del are keeping well, and having fun with the new AV system.

I picked up one of those 48” Sony...