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• #12827
Ta.
I think that's very much a project for a rainy day then
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• #12828
Here’s my solution for boomy bass because rear-ported speakers in an alcove. It’s important to use matching cuddly dragon souvenir tat to ensure even attenuation.
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• #12829
😍😂
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• #12830
Looks like you've got some heightened bass in the 70-150hz region, a bit of stuffing might help you there. You've also got a dead spot around 180hz. If your speakers are about 85cm from the wall it'll be phase cancellation.
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• #12831
.double post
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• #12832
Thanks. I'll have another look, maybe over the weekend.
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• #12833
They're more like 8.5cm from the wall. I need to measure the room for its estimate thing.
Just covering the ports with my hands removes some of the boominess.
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• #12834
I LOLd.
buys 2 dildos in game of speaker port stuffing one-upmanship
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• #12835
Could be in the other direction.
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• #12836
I'm going out now but I'll measure some stuff up and post it. Plus learn about the software. Any black friday calibrated mic deals... ? :)
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• #12837
Here’s a prosaic upgrade - a foot switch socket. I was getting the hump with the Quads having no power switch, the other power amp having the power switch on the back, no easy access to the sockets and groping around for the power strip switches. So much so that I had started looking into ditching it all for an integrated amp. Now the whole lot comes on with a satisfying stamp.
Also took the Quads for a checkup while I was having the front room decorated and explained my concern about the absence of chassis earthing. He explained that any ground fault would find its way to the neutral which is tethered to earth at the RCD board and it would trip. Happy about that.
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• #12838
He explained that any ground fault would find its way to the neutral
How? You'd need simultaneous live-chassis and neutral-chassis faults. A live-neutral fault won't trip an RCD, because the live and neutral currents would be balanced. An RCD detects the imbalance when part of the live current bypasses the neutral return. If it's a sufficiently low impedance fault, it will trip the overcurrent or short circuit protection provided by your MCB or fuse. If you have a live-chassis fault and the chassis isn't grounded any other way, you provide the ground return when you touch it; you'd better hope in that case that your RCD does its job 😐⚡
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• #12839
TVM Northampton. Give him a call I’m sure he’d love to chat.
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• #12840
Is that an audiophile grade switch?
I’m sure Russ Andrew’s can sell you something with OFC wiring and a Quantum Science silver fuse. -
• #12841
It’s a special accessibility needs switch 😂
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• #12842
My set up that I've had for years....
Rega planar 3 turntable that I bought from Mike Manning audio in Yeovil, Somerset in 1990.
The Marantz KI signature cd and amp I've had for around 20 years.
The lovely little AVI nuneutrons I've also had for a similar time.
Room design in our latest house dictates this less than ideal placement for now but I've tried to compensate with marble plinths on spikes.
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• #12843
And a scented candle from Jo for the chill.
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• #12844
That's my wife's. Nothing to do with me. I'm not allowed to touch it, apparently it cost a lot of money.
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• #12845
Lol
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• #12846
Is she allowed to touch the deck though?
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• #12847
No.
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• #12848
A permission swapsie should be on the cards.
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• #12849
.
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• #12850
Also took the Quads for a checkup while I was having the front room decorated and explained my concern about the absence of chassis earthing. He explained that any ground fault would find its way to the neutral which is tethered to earth at the RCD board and it would trip. Happy about that.
I know you don’t want to hear this, but that’s really bad advice. Especially with valve equipment.
If the chassis goes live with mains it won’t trip anything. It’ll be live with 240V AC and give you a nasty shock or kill you or your kids if any of you touch it. If for whatever reason the HT makes contact with the case, which can happen on valve equipment if a capacitor goes bad or if a 60+ year old transformer shorts internally, it won’t trip anything and the case could be around 400V DC. I’ve taken 110V DC across my hands and I’m telling you now it’s not pleasant. You probably won’t get a second chance with 400V DC, it’ll just kill you instantly. So bear that in mind. You might get lucky and it’ll short an earth through another bit of equipment, but I really would earth those cases 👍
In fairness it's a pretty complex bit of software. You do need to calibrate the volume of output so that it closely represents your listening target. Do be careful not to blow your speakers. If you change the smoothing you start to see a more recognisable sweep. Remember your mic has a curve of it's own. You can also click the phase box at the bottom to get rid of confusing phase data as that's not going to help you at the moment.
I've posted this video before and the guy has an annoying presentation style but the method works and it might introduce you to a few concepts you're going to need to get your head around.
https://www.youtube.com/watch?v=5YcH7j2-L1Y
It will probably also lead to other REW based you tube videos that might help.