|
|
| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
|
|
 |
|
|
|
|
|
Marc Mickelson published his new infomercial
about Lamm LP1 phonostage. I do not use Lamm products
but as former Lamm product user I naturally keep looking what Lamm does. http://www.theaudiobeat.com/equipment/lamm_lp1_signature.htm
I did not rea...
|
|
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...
|
|
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...
|
|
Hi Romy and other fellow audiophiles, what is your experience with passive transformer based preamps? Is this the ultimate way to get a perfect variable gain? Or do you prefer to use an active preamp?Chris ...
|
|
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...
|
|
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 ...
|
|
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...
|
|
[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...
|
|
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...
|
|
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?...
|
|
[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....
|
|
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...
|
|
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...
|
|
Here is another advantage of multisampling and DSET in particularly. There are many moments in amp that in one or another degree affects transients.The capacitive coupling for instance works fine but as long the amp sits in class A1. As soon amp hit ...
|
|
[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...
|
|
[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 ...
|
|
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'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...
|
|
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...
|
|
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...
|
|
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 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...
|
|
[quote user="serenechaos"] on 3) & 4): Dave Slagle, Intact Audio, knows a LOT more about transformers than I do, and the nickle autoformers I got from him work so well, I totally trust his (and/or Jeffrey Jackson's) judgment to over my "guess...
|
|
I don't know the 6336, but EL34 used correctly will sound like its driver tube, not to mention the comparative ease of PP scheming. Sure, you need the voltage; but this to me only underscores the low ESR angle. And who needs an inductor/transformer...
|
|
Got the ultra low DCR toroids coil and pit them in use. Yes, it was very right move and they a bit trimmed the midbass tail. Playing with inductance and listening how the midbass decays (measurements are worthless in this case) I ended up with 4.8mH ...
|
|
|
|
|
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: |
0 |
|
 |
|
|
Total human visitors: |
42,770,933 |
|
|
|
|
|
|