|
|
| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
|
|
 |
|
|
|
|
|
[quote user="Romy the Cat"] joaco wrote:... this last time ive been doing some "ear" experiments and trying different setups of filtering . Just a question regarding a phenomena that im having , ive tried some ups/on-line regenerators and I think the...
|
|
Hi Romy,I think you may be struggling to get 10-12db of gain out of a spud amp (the term is a play on "one tuber").... May just about get it with 6C45.... remember you will be stepping down something like 12 to 18:1 on the OPT.best case: 10db require...
|
|
Well, Paul the more you happy and pleased with your transformer-attenuator the more I feel it would be interesting to see your reaction to a good active unit. A “good unit” should be the key-world in here as since you complained about active units’ n...
|
|
Romy, As you pointed out, if the input circuitry and driver operating points are fixed, your only options are to lose it via coupling or the output stage. Maybe split them, i.e. use a 1:0.5 ratio on the inter-stage transformer and you coul...
|
|
Sorry I'm a little late here, but anyway... here's something that may worth trying. Apologies that I can't provide a schematic at the mo - I can sort this out later if you like. In the meantime, you'll need a pen and napkin to help visualise this:The...
|
|
I got new coils for my MF DH DSET output transformer. To read more about it: http://www.intactaudio.com/forum/viewtopic.php?p=4171#4171...
|
|
You can gap it for 250mA or for 300mA – you still have some spare inductance. From what I see Pieter gave you a very good price for that chunk of core. If I decide to keep my “experimental” full-range SET amp (Sun Audio) then I will get from him a be...
|
|
Romy, Big thanks for your answers. But i've got another question :)You mentioned gas regulator as grid current "absorber".Very good point, because personally i hate to use resistor as a grid leak.Instead of it i'll use choke - almost with any tube, i...
|
|
Romy,
I ran the tube conservatively at 40W, because it is still breaking in, and I do not want to push it too much power to damage it (then I will have to break-in a new tube all over again). This amp can give max power at 20.35W (12.76Vrms into 8 ...
|
|
N-set,The caps from pic is C2 -2000uFC10 -6000uFToroids transformer company comes from my city http://www.toroidy.pl/index.php?option=com_content&view=article&id=6&Itemid=7&lang=en.Yes, I know that tube amps(all audio equipment) an...
|
|
The Melquiades amplifiers practically dally demonstrate so much “interesting” behavior that it is not even funny. My relationship with this amp reminds me that bird for the Montaigne's “An Apologie Of Raymond Sebond”:
“But the tale of the plot is v...
|
|
Chris, may I ask you about this air core transformer for HF? When it decays at the bottom then how sharp is it? Is it usable right up to the roll-of or it should to be "given a space"? Also, did you do any listening evaluations of this air-core ...
|
|
[quote user="anthony"]Both UB Horn roll off circa 130Hz in room. There are a couple of rough MDF boxes here that I knocked up from spare sheet a while back. Have not tested them specifically at the intended spot behind me but running around with a ...
|
|
[quote user="el`Ol"]Why not more semi-active speakers with high-sensitivity mid/treble and transistor-powered bass? [/quote]… and it is very important do not overlook this difference. Multiamping is fine but is it severely suffer in case of different...
|
|
[quote user="Lx_"] Indeed when the battery gets charged the sound is different from when it is charged. I have noticed this especially after the battery is discharged completely (after PP shuts itself down when running on battery). I think this i...
|
|
Two Questions:1) Would it be difficult to replace the switching supply with an external linear supply. You could even get an adjustable one and play with the voltage.2) I have emailed PP three times whether their units can accept 120V balanced power....
|
|
I have some theories...*please* keep this tube safe, we will have to run some curves on it...More importantly, it's a good thing the output transformer wasn't damaged, though I'd imagine the tube would have struggled to pass more than around 600mA an...
|
|
Romy,I think I'll try your suggestion. When you say "mappable transformer" do you mean one with multiple primary taps, like 3.5K, 5.5K, 8K?Gera...
|
|
Jarek, what you describe can happen if anything with voltage touches the chassis, or something might be arcing across a very narrow gap. I have seen part leads that went too far through PCBs, also carelessly fitted stand-off. Even the axis of a choke...
|
|
GC is a good fellow. If you will specify the errors I will let him know.One wonders how one does this for those of us without enclosures?Would the power transformer be a good place to place one of the leads?...
|
|
If you want to try it out all you need is a large enough step up transformer for the current needed to convert the 240 to 440. I have several 2 and 3 KVA transformers in the attic you could use.Bill...
|
|
Hi Max,If you have buzzing that is audible outside the PurePower case, or audible from a listening position, the behavior is not normal. The probable source is a capacitor. Caps can hum in the same way as transformers - the foil expands and contracts...
|
|
[quote user="Alex Yakovlev"] Can you pass me transformer parameters? What about tubes and sockets? Caps?[/quote]Alex, when the Mild become public then all specification and sources will be reviled. Meanwhile I have no further comments and ...
|
|
Thanks for this one Romy, very interesting...it sorta ties together several things that I have been thinking about lately. I guess I am lucky that the Bass Cannons can be run off 9w from the DSET bottom channel and from memory I get about 115dB at 1...
|
|
I've played with this a little. We are 230V in Australia but many years ago the standard was 240V and the power coming into our house is still a nominal 240V. I remember playing with the Placette with a step down transformer and was not getting...
|
|
Chris,
I head a lot a lot of good thing about Pieter from Tribute and I would like to recruit him for the s2 transformer. We send last week to him an email and he did not reply. I heard from many other people that it is a very typical for his commu...
|
|
OK, the next step is kind of done. All transformers and chokes are done form “outside” of the amp (under the bulge). I have attached the capacitors and the output transformer to the “inside”. This silicone attachment that for the computer grade...
|
|
i am currently gathering parts for a pr. of full range melq.i would like to have the option to add a single stage to do 550 hz and up.then to switch the full range to do below 550hz.what transformer do you suggest for the high pass(i am ordering...
|
|
I made this measurement in such a way that I unsoldered the wire from pin 4 (black in the photo) and connected to it the red clip from the multimeter, and to pin 4 I connected the black clip from the multimeter. I set the multimeter to the mA rea...
|
|
I figured there would be difficulties. Thanks for the link, 117 pages of Russian, wow. Transformers came to mind. i did not know if such transformer could be made. 30:1? with wide bandwith. amorphous? I think i have ribbon mic transfo with ratio l...
|
|
|
|
|
All context of this site except the Forum's posts
Copyright © Roman Bessnow 2004-2024
All messages within the Site’s Forum Copyright © by
authors of the posts
|
|
Last 24-hours posts: |
1 |
|
 |
|
|
Total human visitors: |
43,017,016 |
|
|
|
|
|
|