How to Bias a Laney LH50

Learn how to Bias a Laney LH50 amplifier.

Correct biasing of your Laney LH50 amp will ensure that your valves are running at optimum performance.

Of course, many people do not bother to bias their amps and have no problems but manufacturers always say that you should bias your amp when you change your power valves. There is, of course, no need to rebias the amp when you change your preamp valves.

NOTE: As you all know, there’s already loads of free information on the web about how to bias Laney amplifiers. Unfortunately, the sad truth is, at best, most of it is plain wrong and in many cases, it’s downright dangerous.

When we open up an amplifier we’re dealing with extremely high voltages. An amp will hold a lethal voltage for quite some time even after it’s been switched off. So there’s no room for error, guesswork or amateur electronics here. Most of the stuff you read on the forums is stuff is written by well-meaning enthusiasts who have gained a little knowledge along the way – so that’s just enough knowledge to make them, and you, dangerous!

So we’ve put together the definitive bias manual for the Laney LH50 amplifier. This way you know it is exactly right and carried out in the correct manner. Getting the bias setting right for your matched set of power valves is key to getting the optimum tone.

This illustrated guide will take you step-by-step through every stage of the process on how to perfectly bias your Laney amplifier. The important thing is that it is written by a senior electronics engineer with over 40 years of experience in the amplifier industry. He has repaired and modified thousands of amplifiers over his long career. So this is the ultimate guide for your exact amp – all made extremely clear and simple to understand with lots of hints and tips. He also debunks a lot of myths surrounding the biasing of valves once and for all along the way.

If your output tubes are running “too cold” they will last much longer but the sound will probably be very disappointing. Run them too hot and you may actually like the sound better than the suggested factory setting. But run them really hot and there is a danger of red-plating which is a real threat. Any amp that red-plates the valves must be switched off immediately. So it makes sense to ensure that your amp is running within tolerances to ensure the best performance. This superb guide will enable you to do exactly that.

To get your superb 15-page copy of “How to bias a Laney LH50 amplifier” click on the ‘Add to Cart’ link above.

How to bias Laney amplifiers correctly: The Definitive Expert Guide.

We kindly ask for a very small fee to cover the many hours it took to produce this document and photograph the entire process for you.  The good news, when you place your order is you will receive an email receipt straight away along with a download link.

This download link means you can download the PDF directly to your device straight away. So there’s no hanging around for the postman to turn up and no problems with things going missing in the post – you just download your own personal copy immediately. This also means we can produce the bias manual at a very low price as we don’t have expensive printing or shipping costs to pass on to you.

How to download your bias manual for the Laney LH50 amplifier.

So to download your bias manual, simply click on the product name that appears in blue and underlined when you receive your invoice. This is the link for you to download your personal copy.

So order your bias manual today and get your amp sounding better than ever. If you have any questions don’t hesitate to drop us an email.

Also, do take a look at our FAQ section. Here we answer all the most popular questions we get asked each month. You will also find lots of hints and tips on changing or upgrading your tubes.