Laowei
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Posts posted by Laowei
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20 minutes ago, Pars said:
Stupid question: where do you get multiple solid colors of hookup wire such as that use in hhobeika's build. Rated for 600V, teflon jacketed? Stranded or solid? Thanks!
One source I used. Great to deal with.
Many other wire gauges, solid or stranded available by seller. Do a search of his other items.
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A couple of videos of Guita Rei.
Here she channels John Lee Hooker with a dash of Creem.
For the second one, use your headphones. It’s a binaural recording.
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I shook some salt on them and the soundstage shrunk.
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Please remove me from this Group Buy.
Thanks.
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Those reissue GL KT77s sounded sweet in my GG too.
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That’s the one I was thinking of JoaMat. The “Sandwich Amp” is only other electrostatic tube amp besides the DIY T2, that ties G3 to the Plate on the PCB. All others tie G3 to Cathode.
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I haven’t heard/read the actual reason so can’t speak to Justin’s stated policy of not using KT77s in his amps.
Whether a design flaw in those particular tubes substituting for EL34s or his customers’ experience with a bad batch or two are possibilities, but only unfounded speculation.
Just don’t put any KT77s in his amps.
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The trouble is with the non-standard pin out of JJ beam power “pentode” tubes (6CA7 and KT77) as seen in the DIY T2 circuit .
In the DIY T2 (as well as the original T2), G3 (pin1) on the PCB are connected to the plate (B+). Using the big bottle JJ 6CA7 with its G3 brought out to pin 1, effectively makes the beam forming plates the anode. They were not designed to take the full plate load current. On all other Kevin Gilmore amps (except the all tube Grounded Grid amps which no one has built) connect G3 to the cathode (G1) on the PCBs.
Using true pentode EL34/6CA7 or G3 internally cathode connected beam power tetrodes work fine here. Using JJ 6CA7s or JJ KT77s are the problem. In the DIY T2, true pentode= OK, JJ Beam power = problem, all other Beam power = OK. It’s easy to visually verify if pin 1 on the JJs is internally connected or not.
Justin has his own customer histories that makes him advise not to use KT77s in his amps. So don’t do it there!
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HBD John!
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Just searched..... and this might explain it. From the Pontiac Aztec Wiki page:
“The Aztek was styled under the direction of Tom Peters, who would later design the Chevrolet Corvette (C7).”
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Bob Lutz’s quote “looks like an angry kitchen appliance” on the Pontiac Aztec comes to mind.
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Definitely the worst view of the car. Butt fugley.
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On 7/19/2019 at 6:44 PM, HemiSam said:
I was thinking that very thing today...hope they get the QA/QC correct. Having a first year model when it is a collector's item waaaaaay down the road is one thing. Driving (i.e. paying for) a new car with niggles is no fun.
I have to give Cheby (yeah...that's what I call chevrolet) credit for pushing the envelope. Bold move going mid-engine. 8 banger, mid-engined American muscle car is pretty nifty.
HS
Here’s a profile shot. Chevy certainly borrowed the styling ques and proportions in this view from the Ferrari 458.
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The all new midengine Corvette Stingray was introduced yesterday.
Set to go on sale next year with a “base price under $60K”. 495hp naturally aspirated V8. 8 speed dual clutch automatic transmission only. 0-60mph in under 3 seconds.
Hope they get the QC worked out on this. The Caddy ATS-V I bought in 2016 was a lemon that the factory bought back.
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Let’s see if this works here.
A 360 degree panoramic shot from Chuck Yeager’s seat in the Bell X1
https://www.airspacemag.com/articles/chuck-yeagers-cockpit-180964968/
Edit: Doesn’t appear to. Go to the link.
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2 hours ago, vivolo said:
Hello
I have put together a BOM for the CFA on mouser.
The KSC2752OSTU is available at digikey.
Does anyone know of a suitable 3K resistor? I am having trouble finding one.
You can substitute Dale Vishay RN60 series for KOA Speer MF1 resistors.
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Have had my CFAe amp powered up for over a week now and things have settled in.
Tried out my IEM SR-003mk2 with new super comfy ear pod attachment and covers. These ear pods and amp together are a surprisingly sweet sounding combo.
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Taking the time to get well is the #1 priority. All else is just a DIY hobby.
Don't push it. Get your health back first.
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And now for something completely different. Amazing virtuosity and talent with these young ladies.
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How long did you burn them in? ? /joking
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No problem, Jose. Just having a very bad day on my end, and seems like I took it wrong.
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5 hours ago, mwl168 said:
Yet the CFA is a very nice sounding amp in its own right. To my ears it has a very organic and musical sound signature. If I state my personal preference between the three KG-designed all solid state amps I have built (CFA, Carbon and KGSSHV), some people will probably be choking their beer through their noses.
I’m drinking a beer ATM. So witch is your favorite KG all Solid State Amp??
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I only listened between the CFA and GG with my SR-009. I like the sound of the GG quite a bit better. Can’t say where everything sits on an absolute scale. So I am fair, but not as experienced as others here. That’s all.
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6 hours ago, jose said:
We haven´t talked much about this amplifier. ?
I usually need some time to adjust to the sound of a push-pull amplifier. Once time passes (hours) I feel very comfortable with him.
Honestly, I don´t see any flaw: it has a fairly defined and balanced sound, enough power... to put something negative, the only problem I see is that not all adapt to the sound of a push-pull amplifier (paradoxical) ... But that's what Carbon is for.
That answers a lot for me. I have a breadboarded CFEA up and running and was not warming up to the sound of it. I set it aside and went back to my GG, much prefering it as my daily amp. Maybe I need to play the CFEA for hours as you suggest to really retrain my ears.
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Maybe a cold solder joint on the PCB between the terminal block and the base pin of the input JFET?
Try reflowing the connections on the -I side that distorts.
Speaker Porn
in Speakers
Posted
Lowther TP-1?
Lord, those must sound incredible!
(the one certainly looks incredible)