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Forum: Off Topic Chat Yesterday, 03:19 PM
Replies: 11,205
Views: 1,207,980
Posted By Kei
I was fortunate enough to pick up a few power...

I was fortunate enough to pick up a few power distribution units during a workplace clear out a few years back. It's truly nuts how much they cost considering they are a glorified industrial grade...
Forum: Project Logs Yesterday, 02:14 PM
Replies: 64
Views: 13,153
Posted By Kei
Had to re-pin a bodged fan as the bodge broke...

Had to re-pin a bodged fan as the bodge broke during dismantling. I've already cut the cable where it was splice crimped. It had broken at the barrier strip. (black wire broke off)...
Forum: Project Logs 20-09-20, 10:08 PM
Replies: 64
Views: 13,153
Posted By Kei
Got the board out quite quickly. This still looks...

Got the board out quite quickly. This still looks pretty clean considering the black dust caked over most other parts.
https://live.staticflickr.com/65535/50365489182_65cfa5df4c_h.jpg...
Forum: Project Logs 20-09-20, 06:25 PM
Replies: 64
Views: 13,153
Posted By Kei
Started work on sorting out the server today. Odd...

Started work on sorting out the server today. Odd place to start, but I looked at the keyboard as it was utterly filthy and the key action felt almost gritty. It is an antique PS/2 Acer mechanical...
Forum: Project Logs 17-09-20, 08:47 PM
Replies: 10
Views: 581
Posted By Kei
After much testing, I came to the conclusion that...

After much testing, I came to the conclusion that although the amp sounded great, it had one issue; too much gain. The open loop gain was at 49.54dB and closed loop was 33.26dB. The problem this...
Forum: Off Topic Chat 07-09-20, 10:11 AM
Replies: 1,837
Views: 88,514
Posted By Kei
For the devices that are cooled by water, the...

For the devices that are cooled by water, the extra radiator is pretty much always a benefit. The issue is with anything else in the system that is passively cooled. If the air inside the case ends...
Forum: Off Topic Chat 03-09-20, 03:42 PM
Replies: 11,205
Views: 1,207,980
Posted By Kei
Some spare valves for my amps. New old stock...

Some spare valves for my amps. New old stock Mullard EF86 pentodes and GE military issue 6CG7/6FQ7 double triodes as I had no spares in case of failure....
Forum: Project Logs 29-08-20, 09:22 PM
Replies: 10
Views: 581
Posted By Kei
I've been using it regularly since the start of...

I've been using it regularly since the start of August and it's been running great. It sounds superb. It's surprising just how loud 20-30W is capable of. Having resampled all of the valves, at best,...
Forum: Project Logs 26-08-20, 06:24 PM
Replies: 64
Views: 13,153
Posted By Kei
Three more hard drive cages purchased. All fitted...

Three more hard drive cages purchased. All fitted snugly, giving me capacity for 18x 3.5" disks, 4x 2.5" disks and 3x 5.25" bays that can fit another 4x 3.5" drives with an adaptor. Not a lot of...
Forum: Project Logs 21-08-20, 01:34 PM
Replies: 64
Views: 13,153
Posted By Kei
I decided that the old CM690 II case with it's...

I decided that the old CM690 II case with it's limited drive support was going to become a hurdle. The failed backplane didn't help matters so I wanted to eliminate them from the build. I found that...
Forum: Project Logs 17-08-20, 03:52 PM
Replies: 64
Views: 13,153
Posted By Kei
Replacement disk arrived plus an extra to run as...

Replacement disk arrived plus an extra to run as a hot spare.
https://live.staticflickr.com/65535/50237475697_29486f0f2d_h.jpg (https://flic.kr/p/2jxjch6)

Rebuild started. I reckon the estimate...
Forum: Project Logs 13-08-20, 09:35 PM
Replies: 10
Views: 581
Posted By Kei
Fitted the Electro-Harmonix 6CA7's today and am...

Fitted the Electro-Harmonix 6CA7's today and am giving it a test. I think it may be my imagination but it definitely seems to sound a bit better. I think there may be more gain or something, but...
Forum: Project Logs 12-08-20, 06:50 AM
Replies: 64
Views: 13,153
Posted By Kei
Nowt wrong with the older hardware. I’d still be...

Nowt wrong with the older hardware. I’d still be running my phenom if I hadn’t needed more pice lanes. It was incredibly annoying when the 990FX board inexplicably died.

I just figured out the...
Forum: Project Logs 11-08-20, 07:29 PM
Replies: 64
Views: 13,153
Posted By Kei
First time I've had the RAID controller alarm go...

First time I've had the RAID controller alarm go off today. Not sure on the cause as no disks show any media errors, the controller itself shows no errors and nothing wrong on the sas expander...
Forum: Off Topic Chat 11-08-20, 06:56 PM
Replies: 11,205
Views: 1,207,980
Posted By Kei
Matched quartet of Electro-Harmonix 6CA7 valves...

Matched quartet of Electro-Harmonix 6CA7 valves for my amp.
https://live.staticflickr.com/65535/50215182207_b248860885_h.jpg ('https://flic.kr/p/2jvkWcz')
Forum: Project Logs 10-08-20, 07:44 PM
Replies: 10
Views: 581
Posted By Kei
Closing the feedback loop didn't entirely go to...

Closing the feedback loop didn't entirely go to plan as the usual feedback issues returned. However, things were not as bad as they had been with the previous builds.

The usual 58ish KHz ringing...
Forum: Project Logs 08-08-20, 08:11 PM
Replies: 10
Views: 581
Posted By Kei
Thanks. It's proven to be a much bigger challenge...

Thanks. It's proven to be a much bigger challenge than I originally expected.

First testing wan't entirely to plan as I quickly discovered I'd got the pinout of the transistor in the CCS...
Forum: Project Logs 08-08-20, 09:56 AM
Replies: 10
Views: 581
Posted By Kei
Decided to have a rejig this time and move the...

Decided to have a rejig this time and move the capacitors about and also have a partition between the power supply and the amplifier.
https://live.staticflickr.com/65535/50037652793_3efb70d96f_h.jpg...
Forum: Project Logs 07-08-20, 04:28 PM
Replies: 10
Views: 581
Posted By Kei
Made a start on the metal prototype build by...

Made a start on the metal prototype build by re-purposing a 6U rack blanking cover to make the top panel. After plenty of drilling and punching the larger holes out I was left with this. Layout...
Forum: Project Logs 06-08-20, 07:08 PM
Replies: 10
Views: 581
Posted By Kei
Cue the Mk 2 Version...When all else fails, do it...

Cue the Mk 2 Version...When all else fails, do it by the book. This is pretty much as close to the book layout as I could get. I had to fiddle about with the two capacitors that live between the...
Forum: Project Logs 06-08-20, 06:42 PM
Replies: 10
Views: 581
Posted By Kei
Scratch Build Tube Amplifier

...or Valve amp if you're British. Those from OCUK may recognise this. It will be the abridged version rather than the entire saga. That said, even OCUK got a more brief version compared to the poor...
Forum: OC3D News 05-07-20, 07:02 AM
Replies: 6
Views: 471
Posted By Kei
I actually managed to do this once about 20 years...

I actually managed to do this once about 20 years ago with an Intel P166 on socket 7. I had a hell of a time separating the stuck cpu from the base of the heat sink as the old white thermal grease of...
Forum: Off Topic Chat 17-06-20, 10:05 AM
Replies: 11,205
Views: 1,207,980
Posted By Kei
As am I. I'm still running the AP15's I bought 7...

As am I. I'm still running the AP15's I bought 7 years ago, dreading when they eventually fail.

The mayhems shop...
Forum: Off Topic Chat 16-06-20, 05:15 PM
Replies: 11,205
Views: 1,207,980
Posted By Kei
Got a Makita DHP481z combi drill to replace my...

Got a Makita DHP481z combi drill to replace my very old Bosch PSB 12VSP-2 that is starting to show it's age (~20 years or so now). It was also very long for a cordless making it a pain to use in...
Forum: Sound Cards & Speakers 29-05-20, 02:20 PM
Replies: 36
Views: 2,649
Posted By Kei
It could be the microphone used or they could be...

It could be the microphone used or they could be that bad. This is a good video showing proper JBL controls ones. (Not mine, but seems pretty well recorded) He gives them some serious volume abuse...
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