Search found 68 matches

by LD50
Fri Apr 19, 2019 6:39 am
Forum: Technical
Topic: Pics Only Inductor Boost
Replies: 1
Views: 33

Re: Pics Only Inductor Boost

I have been looking for the same info re manufacturer. Here is the last Pix only I worked on: https://i.imgur.com/QwjyJgZ.jpg The schems I have seen suggest 2mH but an Orange expert thought more like 25mH, sorry I should have pulled and measured but it was not my amp and did not want to damage it as...
by LD50
Mon Apr 15, 2019 8:37 pm
Forum: Serial Numbers
Topic: ~1972 Orange OR-80
Replies: 9
Views: 369

Re: ~1972 Orange OR-80

If you are in the US there is a guy I know in Texas that is pretty hot on these.
by LD50
Tue Apr 09, 2019 8:32 pm
Forum: Serial Numbers
Topic: ~1972 Orange OR-80
Replies: 9
Views: 369

Re: ~1972 Orange OR-80

Image
by LD50
Tue Apr 09, 2019 8:30 pm
Forum: Serial Numbers
Topic: ~1972 Orange OR-80
Replies: 9
Views: 369

Re: ~1972 Orange OR-80

I see relatively little original in there at all, from the output transformer, caps, most of the resistors etc all replaced. Obviously had a really hard life. One of the nicest Oranges I worked on (about 2 years ago)was a Pix only 120, the last Pix only a couple of months ago was not quite as sweet ...
by LD50
Tue Apr 09, 2019 8:28 pm
Forum: Serial Numbers
Topic: ~1972 Orange OR-80
Replies: 9
Views: 369

Re: ~1972 Orange OR-80

I see relatively little original in there at all, from the output transformer, caps, most of the resistors etc all replaced. Obviously had a really hard life. One of the nicest Oranges I worked on (about 2 years ago)was a Pix only 120, the last Pix only a couple of months ago was not quite as sweet ...
by LD50
Sat Feb 23, 2019 4:15 pm
Forum: Technical
Topic: speaker replacement
Replies: 3
Views: 181

Re: speaker replacement

I agree, the new one might be a bit brighter but give it a few hours you will hardly notice.
by LD50
Sun Dec 23, 2018 9:12 pm
Forum: Community Discussion
Topic: Which Orange for Stoner?
Replies: 13
Views: 699

Re: Which Orange for Stoner?

You are in Europe, plenty of old OR120s around - perfect!
by LD50
Sat Dec 22, 2018 11:27 am
Forum: Technical
Topic: Which capacitors should I order for a 1978 OR-80?
Replies: 6
Views: 360

Re: Which capacitors should I order for a 1978 OR-80?

The 100uF mains cans can be 450v or 500v, they are wired in series for mains so even the 450v handle 900v with wriggle room. The 32uF screens cans can be 32 or 33uF and similarly are in series so 350v will suffice (rated at 700v combined) I like to go 10uF 200v for the bias caps as they are a little...
by LD50
Sun Dec 16, 2018 11:12 pm
Forum: Technical
Topic: Help please. Crush 60 some idiot has tried to use spk out as line out
Replies: 5
Views: 381

Re: Help please. Crush 60 some idiot has tried to use spk out as line out

I cannot raise a schem to the Crush 60 but I am surprised that as an SS amp it died with a load mismatch. I agree I would check that a fuse has not popped as I would always expect that first even feeding the speaker into a very high load (unlike a tube amp). If that does not work then worth a basic ...
by LD50
Fri Nov 30, 2018 10:22 pm
Forum: Technical
Topic: Rocker 32 WTF is wrong with this thing?
Replies: 10
Views: 569

Re: Rocker 32 WTF is wrong with this thing?

i know nothing of tube amps and no i dont have any replacement valves. this is a brand new amp and i'm forced to buy all new tubes? wtf is this bullshit. not impressed with long and mcquade or orange for that matter. if anybody is a moderator please forward this to someone because I'm going to have...
by LD50
Thu Nov 29, 2018 7:21 pm
Forum: Technical
Topic: Rocker 32 WTF is wrong with this thing?
Replies: 10
Views: 569

Re: Rocker 32 WTF is wrong with this thing?

Check what preamp valve they replaced and with what type. If they used a 5751 or ECC81 where a 12AX7/ECC83 is normal that would cause the symptoms. Normally there are x4 ECC83s, x2 ECC81s and x4 EL84s. You must check what is there and that they are in the right slots. Do you have spare preamp valves...
by LD50
Thu Nov 22, 2018 10:29 am
Forum: Technical
Topic: AD15 Mods - Questions for the Experts
Replies: 20
Views: 909

Re: AD15 Mods - Questions for the Experts

Very easy. Neatest non invasive way would be a push pull pot. You interrupt the end of the cap that goes to ground. So solder one end of cap to pcb that goes to the tube and raise the other. Solder one wire to this and your switch. Solder the other wire to the empty hole on the pcb and to the other ...
by LD50
Wed Nov 21, 2018 3:48 pm
Forum: Technical
Topic: AD15 Mods - Questions for the Experts
Replies: 20
Views: 909

Re: AD15 Mods - Questions for the Experts

The best person to answer this would be Ade but I guess he does not get time to visit here now. c4 is a cathode bypass cap. The cathode resistor of 1k5 is a very generic value for an ECC83 running a plate resistor of 100k. Adding a bypass resistor will give you a gain boost that will be quite full (...
by LD50
Wed Nov 14, 2018 10:09 pm
Forum: Community Discussion
Topic: Laugh if you want, I got an online degree
Replies: 7
Views: 745

Re: Laugh if you want, I got an online degree

Mystic38 wrote:
Wed Nov 14, 2018 6:26 pm
i cheated.. i gave the details of my rich Nigerian uncle who just died..
Definitely best option.
Mind you my degrees were pretty expensive I seem to remember......................
by LD50
Tue Nov 13, 2018 10:00 pm
Forum: Technical
Topic: Matamp 2000 - pics and clips added
Replies: 16
Views: 2354

Re: Matamp 2000 - more pics and clips added

More pictures: https://i.imgur.com/96XVYYO.jpg https://i.imgur.com/IlbYNAo.jpg https://i.imgur.com/0EHo3Hx.jpg As you will see I did not copy the original faceplate/layout, I used the same hole pattern as the ORST so that the fuses went on the back (vs front on the original) and a four position Dept...