WikiWirral values you and your opinion.
Forum Statistics
Posts1,027,404
Topics75,530
Members13,471
Forums65
Posts in last 24hrs23
Most Online14,906
Nov 23rd, 2019
Who's Online Now
47 registered members (10 invisible), 1,743 guests, and259 spiders.
Key: Admin, Global Mod, Mod
Social Media : Follow Us


Popular Topics(Views 7days)
New General Forums
Hi everyone.
by Harp1st. 6th Aug 2020 12:16pm
The cat got the cream
by snowhite. 23rd Jul 2020 2:25pm
Eddie Flanagan comedian
by mikeeb. 22nd Jul 2020 2:23pm
McDonald's Haven't any Empathy
by BultacoAstro. 13th Jul 2020 1:20pm
New Wirral History
A Stanworth Shop, Birkenhead North
by diggingdeeper. 6th Aug 2020 11:11am
Toll booths Birkenhead Tunnel
by mikeeb. 4th Aug 2020 2:34pm
The new 4 bridges.
by mikeeb. 7th Jul 2020 4:10pm
Outdoor swimming pools
by mikeeb. 30th Jun 2020 4:26pm
WW2 Bomb Map - Wallasey
by red_devil. 9th Nov 2019 12:21am
Forum Tips
Photo Gallery Forums
Boaty McBoatface takes shape
The gathering storm: Mersey waterfront today
Topic Replies
Toll booths Birkenhead Tunnel
by Moonstar. 6th Aug 2020 5:47pm
What Wood?
by Moonstar. 6th Aug 2020 5:39pm
Xbox One Console With RDR 2 And 22" LG TV
by rhoobarb2002. 6th Aug 2020 4:13pm
Roland U-20 Vintage 80s/90s RS-PCM Keyboard/Synth
by rhoobarb2002. 6th Aug 2020 3:41pm
Hi everyone.
by Harp1st. 6th Aug 2020 2:45pm
A Stanworth Shop, Birkenhead North
by bert1. 6th Aug 2020 1:45pm
Coronavirus
by casper. 6th Aug 2020 10:16am
14 Stirrup Arrowe Park Road
by joney. 6th Aug 2020 9:08am
Brook St Birkenhead
by joney. 5th Aug 2020 7:51am
August
M T W T F S S
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
Recent Posts : What's On ?
Previous Topic
Next Topic
Print Topic
Rate Topic
Valve amplifier repair #1048402
25th Nov 2017 6:55pm
25th Nov 2017 6:55pm
Joined: Nov 2017
Posts: 1
Wallasey
G
gray153 Offline OP
gray153  Offline OP
G
Joined: Nov 2017
Posts: 1
Wallasey

Is there anywhere I can get my valve amplifier repaired?.

Google Ads
Re: Valve amplifier repair [Re: gray153] #1048404
25th Nov 2017 7:53pm
25th Nov 2017 7:53pm
Joined: Jul 2011
Posts: 8,964
wallasey
Dilly Online shifty

Wiki Guardian
Dilly  Online Shifty

Wiki Guardian
Joined: Jul 2011
Posts: 8,964
wallasey
SS radio mill lane Wallasey.
0151 638 6910.

Re: Valve amplifier repair [Re: gray153] #1048459
26th Nov 2017 2:43pm
26th Nov 2017 2:43pm
Joined: Jan 2010
Posts: 1,725
wirral
E
Excoriator Offline
Forum Addict
Excoriator  Offline
Forum Addict
E
Joined: Jan 2010
Posts: 1,725
wirral
Why not replace it with a transistor amplifier? They are much better and will probably cost you less than the repair.

I've designed built and used both, and valves are a pain in the arse. They are limited life components and the emissivity falls with time. You get a steady increase in distortion, and they sound worse and worse. Also, they are a lot heavier and less efficient. Finally, they use high voltages which means increased stress on components, and are dangerous to work on live (and in some cases for many minutes after they've been switched off!)

Valves were abandoned for many excellent reasons. There is no good reason to continue with them.

Re: Valve amplifier repair [Re: Excoriator] #1048465
26th Nov 2017 3:56pm
26th Nov 2017 3:56pm
Joined: Jul 2011
Posts: 8,964
wallasey
Dilly Online shifty

Wiki Guardian
Dilly  Online Shifty

Wiki Guardian
Joined: Jul 2011
Posts: 8,964
wallasey
Originally Posted by Excoriator
Why not replace it with a transistor amplifier? They are much better and will probably cost you less than the repair.

I've designed built and used both, and valves are a pain in the arse. They are limited life components and the emissivity falls with time. You get a steady increase in distortion, and they sound worse and worse. Also, they are a lot heavier and less efficient. Finally, they use high voltages which means increased stress on components, and are dangerous to work on live (and in some cases for many minutes after they've been switched off!)

Valves were abandoned for many excellent reasons. There is no good reason to continue with them.


Why are there so many valve amplifiers on the market then ?

Re: Valve amplifier repair [Re: Dilly] #1048469
26th Nov 2017 4:05pm
26th Nov 2017 4:05pm
Joined: Jul 2008
Posts: 13,523
Birkenhead
diggingdeeper Offline

Wiki Master
diggingdeeper  Offline

Wiki Master
Joined: Jul 2008
Posts: 13,523
Birkenhead
Originally Posted by Dilly
Why are there so many valve amplifiers on the market then ?


Mostly for the same reason as there are 100+ t-shirts out there - pure vanity and people believing in market hype.

There was a good reason guitarists liked them at one time but that was because of the type of distortion not purity, exactly the same sound can be reproduced much more cheaply now.

Mind you, I still have a very early hybrid stereo tuner which I can't seem to let go.

Last edited by diggingdeeper; 26th Nov 2017 4:07pm.

The further you are down the pay scale, the more 'essential' you are when the s--- hits the fan... Sue Farbysmith 2020

Insults are engendered from vulgar minds, like toadstools from a dunghill - Charles Caleb Colton

We don't do charity in Germany, We pay taxes. Charity is a failure of governments' responsibilities - Henning Wehn
Re: Valve amplifier repair [Re: gray153] #1048481
26th Nov 2017 5:54pm
26th Nov 2017 5:54pm
Joined: Jan 2010
Posts: 1,725
wirral
E
Excoriator Offline
Forum Addict
Excoriator  Offline
Forum Addict
E
Joined: Jan 2010
Posts: 1,725
wirral
DD is right.

There is one born every minute, and companies ready and waiting to take advantage. The Hi-Fi market is particularly prone to nonsense like 'oxygen-free copper' speaker leads and gold plated mains leads. They don't make the slightest difference to the quality of the sound of course, but SOMEONE buys them despite the eye-watering price tickets.

Until recently we were down to only two 'valves' in our house. The cathode ray tube in the telly and the magnetron in the microwave. We are now down to one - the magnetron - but I read recently that it won't be long before these too are replaced by semiconductors, and a jolly good thing too! One of the advantages is that by varying the frequency, you can move the standing waves around about and eliminate the need for rotating the food and waiting a minute after cooking for the heat to even out. The oven will be lighter, cheaper, will last longer, and will not involve lethal voltages like 2,500v. Better in every way!





Moderated by  Mod 

Random Wirral Images

Click to View Topic.
Newest Topics
Hi everyone.
by Harp1st. 6th Aug 2020 12:16pm
A Stanworth Shop, Birkenhead North
by diggingdeeper. 6th Aug 2020 11:11am
Toll booths Birkenhead Tunnel
by mikeeb. 4th Aug 2020 2:34pm
What Wood?
by rocks. 1st Aug 2020 7:12pm
New Merseyrail trains covered in graffiti
by mikeeb. 28th Jul 2020 6:38pm
For Sale & Free
Xbox One Console With RDR 2 And 22" LG TV
by rhoobarb2002. 6th Aug 2020 4:13pm
Roland U-20 Vintage 80s/90s RS-PCM Keyboard/Synth
by rhoobarb2002. 6th Aug 2020 3:41pm
Three light unit
by gerry1. 3rd Aug 2020 10:36am
Carlton Players Birkenhead Theatre Programmes
by NickWirral. 19th Jul 2020 8:54pm
Ipad Mini 5th Gen
by Catsick. 11th Jul 2020 1:58pm
Member Spotlight
granny
granny
Wirral
Posts: 17,331
Joined: June 2011
Show All Member Profiles 
Newest Members
Bobblenose, Johan_Enrik, Oscar27, Barry02020, mpitch
13471 Registered Users
Today's Birthdays
No Birthdays
New Wirral Info
What Wood?
by rocks. 1st Aug 2020 7:12pm
Covid testing with certification on Wirral
by CarterUSM. 23rd Jul 2020 10:46am
Neowise comet
by mikeeb. 20th Jul 2020 9:04pm
Polish trades?
by Robivan. 17th Jul 2020 6:29pm
Wirral rocks
by GaryFromWirral. 9th Jul 2020 6:35pm
News : New Topics
New Merseyrail trains covered in graffiti
by mikeeb. 28th Jul 2020 6:38pm
Found bicycle seat cover
by BultacoAstro. 25th Jul 2020 10:43am
Regeneration of New Ferry
by Excoriator. 24th Jul 2020 3:53pm
Painted frontages of new Ferry Shops.
by Excoriator. 23rd Jul 2020 11:29pm
Eastham Train Station
by BultacoAstro. 11th Jul 2020 8:26am
New Enthusiast Forums
Advice Needed Hellcat Carrera rear Wheel
by BultacoAstro. 28th Jul 2020 11:04am
River Mersey , then and now
by cools. 23rd Jul 2020 7:19pm
What is sitting on roof
by BultacoAstro. 9th Jul 2020 11:03am
Cruel ear cropping breeders moved to Bromborough
by venice. 21st Mar 2019 4:10pm
Salt and Blood Pressure
by diggingdeeper. 22nd Sep 2018 7:42pm
Popular Topics(Views 24hrs)
Wirral Sunrise Sunset
Sunrise Thu 5:38am
Sunset Thu 8:57pm
Local Time Thu 5:47pm
Powered by UBB.threads™ PHP Forum Software 7.6.1.1