WikiWirral Wirral's Biggest Online Forum
Forum Statistics
Posts1,028,174
Topics75,602
Members13,519
Forums65
Posts in last 24hrs10
Most Online14,906
Nov 23rd, 2019
Who's Online Now
33 registered members (9 invisible), 1,459 guests, and195 spiders.
Key: Admin, Global Mod, Mod
Social Media : Follow Us


Popular Topics(Views 7days)
New General Forums
Remembrance day
by locomotive. 30th Sep 2020 7:21pm
George Carlin
by BultacoAstro. 10th Sep 2020 9:00am
Our Earth
by granny. 8th Sep 2020 10:02am
The Moon Landing ?
by BultacoAstro. 29th Aug 2020 4:58pm
New Wirral History
Argyle Theatre
by mikeeb. 25th Sep 2020 1:23pm
St Andrews Square
by MIKE6570. 22nd Sep 2020 5:22pm
Stage-Coach Timetables in 1830's
by mikeeb. 19th Sep 2020 4:05pm
Birkenhead Trams 1876
by mikeeb. 17th Sep 2020 3:38pm
WHAT PUB
by derekdwc. 12th Sep 2020 12:51pm
Forum Tips
Photo Gallery Forums
Boaty McBoatface takes shape
The gathering storm: Mersey waterfront today
Topic Replies
Blitz: The bombs that changed Britain
by diggingdeeper. 30th Sep 2020 11:10pm
SEISS 3rd Grant
by diggingdeeper. 30th Sep 2020 10:45pm
Wanted Computer Desk
by Reno37. 30th Sep 2020 5:27pm
Our Earth
by mikeeb. 30th Sep 2020 11:37am
LCT 7074
by mikeeb. 30th Sep 2020 11:30am
Classic Rock The Bands Are Awakening
by BultacoAstro. 29th Sep 2020 9:41am
Van carpet fitter
by Gibbo. 28th Sep 2020 12:29pm
Coping Stones
by zigzagwanderer. 28th Sep 2020 1:08am
Old Car Photo
by diggingdeeper. 27th Sep 2020 7:52pm
October
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: 8,967
wallasey
Dilly Offline

Wiki Guardian
Dilly  Offline

Wiki Guardian
Joined: Jul 2011
Posts: 8,967
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: 1,730
wirral
E
Excoriator Offline
Forum Addict
Excoriator  Offline
Forum Addict
E
Joined: Jan 2010
Posts: 1,730
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: 8,967
wallasey
Dilly Offline

Wiki Guardian
Dilly  Offline

Wiki Guardian
Joined: Jul 2011
Posts: 8,967
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: 13,591
Birkenhead
diggingdeeper Offline

Wiki Master
diggingdeeper  Offline

Wiki Master
Joined: Jul 2008
Posts: 13,591
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: 1,730
wirral
E
Excoriator Offline
Forum Addict
Excoriator  Offline
Forum Addict
E
Joined: Jan 2010
Posts: 1,730
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
Blitz: The bombs that changed Britain
by mikeeb. 30th Sep 2020 4:02pm
SEISS 3rd Grant
by diggingdeeper. 25th Sep 2020 10:06pm
Argyle Theatre
by mikeeb. 25th Sep 2020 1:23pm
Woody
by lincle. 23rd Sep 2020 1:57pm
St Andrews Square
by MIKE6570. 22nd Sep 2020 5:22pm
For Sale & Free
Wanted Computer Desk
by Reno37. 30th Sep 2020 5:27pm
Coping Stones
by zigzagwanderer. 28th Sep 2020 1:08am
peugeot
by lincle. 25th Sep 2020 5:17pm
toy
by sunnyside. 22nd Sep 2020 12:55pm
Wanted Bultaco Astro Or Pursang 360 Model 104
by BultacoAstro. 13th Sep 2020 10:39pm
Member Spotlight
Norton
Norton
Wallasey
Posts: 741
Joined: September 2011
Show All Member Profiles 
Newest Members
Cavanagh_Shaw, NellyDee, Paul_Mason, Allotmentpete, Mike11
13519 Registered Users
Today's Birthdays
No Birthdays
New Wirral Info
Van carpet fitter
by Gibbo. 17th Sep 2020 9:16am
Tower road. Birkenhead and now Dock road
by keef666. 6th Sep 2020 1:53pm
Enjoy the street theatre!
by Excoriator. 5th Sep 2020 3:50pm
Laminate flooring
by casper. 4th Sep 2020 6:33pm
News : New Topics
SEISS 3rd Grant
by diggingdeeper. 25th Sep 2020 10:06pm
Award for Corbyn ???
by granny. 27th Aug 2020 10:41pm
Casper Specials
by granny. 23rd Aug 2020 5:39pm
Coronavirus
by cools. 30th Jan 2020 5:38pm
Brexit Transition
by diggingdeeper. 19th Mar 2018 2:50pm
New Enthusiast Forums
Blitz: The bombs that changed Britain
by mikeeb. 30th Sep 2020 4:02pm
Woody
by lincle. 23rd Sep 2020 1:57pm
Dorothea Quarry Aug 2020
by KevinFinity. 18th Sep 2020 9:45pm
cat found,Wallasey
by doggod. 17th Sep 2020 8:55pm
Spring fitting required
by gerrymoore. 17th Sep 2020 9:20am
Popular Topics(Views 24hrs)
Wirral Sunrise Sunset
Sunrise Thu 7:15am
Sunset Thu 6:47pm
Local Time Thu 8:56am
Powered by UBB.threads™ PHP Forum Software 7.6.1.1