Search found 813 matches

by jontheid
Sun Dec 30, 2018 11:39 pm
Forum: Technical
Topic: MT20 Cutting out even with 16ohm speaker
Replies: 5
Views: 304

Re: MT20 Cutting out even with 16ohm speaker

What power supply are you using with it? The original supply?
by jontheid
Wed Dec 05, 2018 11:43 am
Forum: Technical
Topic: Valves
Replies: 11
Views: 660

Re: Valves

Les Paul Lover wrote:
Sun Dec 02, 2018 12:30 pm
Power valve degrade faster than preamp valves, preamp valves will typically last 3 or 4 times longer than power valves.
I'd say good preamp valves last even longer than that. Years and years if you are lucky.
by jontheid
Wed Oct 17, 2018 1:42 pm
Forum: Technical
Topic: Are genuine bias pots available OR120
Replies: 12
Views: 1075

Re: Are genuine bias pots available OR120

Just bought 2 x bias pots and 2 x hum pots. Turns out the seller lives about a mile away from me! Lots of other interesting stuff for sale too.
by jontheid
Sat Oct 06, 2018 7:45 pm
Forum: Community Discussion
Topic: New Product Announcement 9/28/18
Replies: 17
Views: 1306

Re: New Product Announcement 9/28/18

Hmm, I really want one as it would go well with my superlight Barefaced cab.

I like how it sounds in this demo:

https://www.youtube.com/watch?v=PLPOF9myRTI
by jontheid
Mon Oct 01, 2018 7:36 am
Forum: Technical
Topic: ? for anyone with an Orange amp using Orange's FS1 footswitch
Replies: 3
Views: 412

Re: ? for anyone with an Orange amp using Orange's FS1 footswitch

Yeah, that is just how it is unfortunately.
by jontheid
Mon Sep 17, 2018 11:05 am
Forum: Technical
Topic: Can anyone help with Schematics(for my tech)?
Replies: 12
Views: 3844

Re: Can anyone help with Schematics(for my tech)?

Gee electronics are guitar amp specialists in Warrington and have a good reputation from what I can see:

https://www.facebook.com/pages/category ... 083395228/

(I have no connection to these guys, just googled it.)

Thanks
Jon
by jontheid
Sat Aug 04, 2018 7:58 am
Forum: Community Discussion
Topic: Orange Hustler in amazing shape
Replies: 17
Views: 1128

Re: Orange Hustler in amazing shape

Lovely!
by jontheid
Thu Jul 12, 2018 6:56 pm
Forum: Technical
Topic: Orange Rocker 30 Problem.
Replies: 16
Views: 1165

Re: Orange Rocker 30 Problem.

Or the other thing to do is to measure the AC voltage at the spade connectors where the thick yellow wires attach - TX4 & TX6.
If there is no voltage here with the amp switched on then the 6.3V tap is toast and it is new power transformer time.
by jontheid
Thu Jul 12, 2018 6:52 pm
Forum: Technical
Topic: Orange Rocker 30 Problem.
Replies: 16
Views: 1165

Re: Orange Rocker 30 Problem.

Doh ! You have already done this!
If these test good, then check the voltage to ground (using AC setting on meter) on either side of the fs3 and fs4 fuseholders.

I have a Rocker 30 schematic, fuzzy but useable, can send it to you if you like.

Cheers,
Jon
by jontheid
Thu Jul 12, 2018 6:49 pm
Forum: Technical
Topic: Orange Rocker 30 Problem.
Replies: 16
Views: 1165

Re: Orange Rocker 30 Problem.

It's not about the EL34s getting their 400 volts(plate voltage), it is about them (and the other non-glowing preamp tubes) getting their 6.3V heater supply. The Rocker 30 is a weird setup. It uses a mains transformer originally designed to supply a valve rectifier (5V heater) as well as preamp/power...
by jontheid
Sat Dec 16, 2017 3:30 pm
Forum: Technical
Topic: Running JRT Send into Return of CR120C ?
Replies: 9
Views: 966

Re: Running JRT Send into Return of CR120C ?

My guess is the op likes the sound of the JRT preamp, but wants more power.
They'll get a tube preamp with a solid-state power amp, effectively.
by jontheid
Wed Dec 06, 2017 7:10 pm
Forum: Community Discussion
Topic: My Rocker 30 seems overly bright. Help with diagnosis.
Replies: 15
Views: 1932

Re: My Rocker 30 seems overly bright. Help with diagnosis.

Rocker 30s are definitely not bright-sounding amps. Between me and my bandmates we now have 4 Rocker 30 combos, and they all sound great, but to me they are only just bright enough! If when the effects loop is removed the amp is still too bright I'd have the tech check if the negative feedback loop ...
by jontheid
Thu Oct 26, 2017 10:20 pm
Forum: Community Discussion
Topic: Rocker 30C help please
Replies: 29
Views: 3320

Re: Rocker 30C help please

What does it sound like on the 'Natural' channel? If this channel sounds ok then the power amp section is going to be ok and the problem is solely within the dirty channel preamp section.
by jontheid
Wed Aug 30, 2017 5:53 pm
Forum: Technical
Topic: Phase when using two amps
Replies: 17
Views: 3430

Re: Phase when using two amps

amps with different amounts of gain stages in the amps themselves, will be out of phase with one another (odd number of gain stages versus even) Ah yes, but this assumes that (with valve amps) that the output transformer is connected such that it doesn't give 180 degrees of phase shift itself. Some...