|
|
| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
|
|
 |
|
|
|
|
|
Ok, I did try the 4th order filter and it did not sound as I wanted. The 3rd order is right slope foe my room but I need to go for custom filters separately dedicated for right and left channels. The problem is my right channel with the att...
|
|
Since I last posted there has been some progress to my indoor and my outdoor systems. Indoors I have added a pair of tapped subs. I must say that I am quite happy with these. Of course they are not as good as full size front loaded horns but still a ...
|
|
Yes, there are a lot of paths.I can see that many DIYers are very much stick on crossovers, changing capacitors, choosing slopes in digital filters - FIR or not FiR and so on.I know very experienced people who now say that with digital crossover he d...
|
|
I have been quietly listening and working on my new system. The upperbass horn can be crossed lower than I anticipated, which is great news for me. I was going to have the crossover point of 160hz, but I can easily do 120hz :) The dual tad's will be ...
|
|
I have been working on my system. I post sparse as I need to listen a lot before doing any changes or decide on anything.I have changed the 1000hz JMLC horn to a 1400hz JMLC horn and the results are better. I have better integration with the Fostex t...
|
|
[quote user="skushino"]"The top response of the upperbass channel is challenged. I do not know why it is – a wrong driver, a wrong curve in J-horn or wrong made filter… " That sweep mirrors what I hear - specifically tepid and weak upper bass in the ...
|
|
Got today the parts and finalized the “perfect” Bessel passive crossover for my new channel. The coils are regular air-core 2.5H and 7H, the caps are Theta 10uF and the small wirewound tuning resistors that kills ~1.5dB in the channel. When I pu...
|
|
[quote user="cv"]Little suggestion should all else fail - you could have a rudimentary phase plug machined that would give you the same (or similar) compression ratio as the original but only one annular exit path. This might preserve the driver char...
|
|
[quote user="Romy the Cat"]I think it might be very interesting to introduce the high-pass filtration for tapped horn and to see how it behaves. It is not only about thermal overload and restriction of excursion. The unloading of none-used bass gener...
|
|
[quote user="Paul S"]The discussion of the abstract nature of the elusive "Hertz" reminds me that individuals and orchestras have long tuned to different "Abstract A", in the "first place". Besides, once you broaden a "tone" into an instrumental "no...
|
|
If the RCA 1443 the same as 1428B but without the field coil then it might be even more interesting than 1428B. As I understand that those prewar driver had phenolic diaphragms that generally shall have tendency to be a bit soft with low order filter...
|
|
Well, you see, the outer dimensions of the mouth of cause an indications of low end response and by objective evaluation of it is easy to estimate horn’s bass numbers. However, it is very far from “sufficient” assessment. A few years back I completel...
|
|
ahh yes, tapped horn is what you would call "close bottom." It has to be designed around frequency response (which is very narrow band). It isn't a problem getting one to go low enough though, and the quality of sub bass produced, smooth yet dy...
|
|
i do it and i did it, but as a newcomer you have to sort out all the infos...not that easy!
[quote user="Romy the Cat"](This is normal, I have written about it many times. Those large bass drivers have a lot of inductance in Voice Coil, the inductan...
|
|
[quote user="serenechaos"] The closest I could come to describing the SOUND, when the source was right; (Charles King's Stellavox) & good electricity (JJ filter) was …. being exceptionally smooth [/quote]
Yep, the strange smoothnes was something...
|
|
Part of the reason we call our computers 'transports' is to encourage people to think of the number-crunching part of an audio system in the same already familiar terms as a CD player - because all the same things matter: CD transports vary according...
|
|
Hi All, 103 or 103R + mass loaded SME headshell + 3012 or a 3009 + Seiki 1500 + hagerman opamp phono stage (good only with select parts and battery power) or an EAR 834 (with some mods) and some old Altec mic t...
|
|
Righto then, I guess there is no reason not to try this, except that one of the original crossovers here is non-functioning (if I remember correctly), so if trialling in stereo I'll have to crossover in Melquiades. Should have the parts here to do t...
|
|
I miss the ancient "apologia", but who has time for ity these days? For those familiar with this gambet, consider this blast preceded by an "excuse" that somehow justifies both itself and what follows. I am too tired to bring these thoughts to ...
|
|
Vinyl almost died after the launch of CDs, but today the popularity of vinyl playback is on the rise. Music stores are selling more music available on LPs, and many audiogon systems include turntables. So where are the full-function preamps? Before d...
|
|
When I was a kid we had a "Fluid Drive" Dodge that used oil rather than gears or friction plates as a torque converter. But I suspect fluid viscocity and film strength would need to be kept very consistent for...
|
|
This question had a second bottom so to say. In reality I was not seeking any suggestion: crocodile clipended leads and the chokes are bybassed in few seconds on the fly. Ripping the filters of would be another few minutes. I do have some spirit of a...
|
|
I juts was pointed out today that PS audio has some interesting ideas out. The transport: http://www.psaudio.com/ps/products/description/perfectwave-transport?cat=audio“…. can read WAV files directly off a DVD … “That is good, can it read the .AIFF, ...
|
|
[quote user="Paul S"]...Among after-market things for the Versa was a system of tanks, hoses and filters designed to deal with the moisture and variable pressure that beset the original system, and there were also various after market pumps, and blim...
|
|
In theory this is a nice machine and it offers a comfortable solution to clean the records.The reality showed - from what I got from owners in the last 2-2,5 years - it is ok at the beginning but after a while they all had endless problems (motor, cl...
|
|
Romy says "I have probably somewhere around 15K of records,"I'm down to One thousand LPs. I'm older than you and I calculate that I only have a dozen or so cycles through them before they sound just as good on a boombox speaker as over my s...
|
|
Something new, probably a reliable unit (the Glaess Audio showed sometimes problems with their plastic parts, rollers, filters.....)Klaudio Ultrasonic Record Cleaning MachineVery comfortable, no plastic and important: You only need distilled water (c...
|
|
Dear Romy,I have one of these machines. It is located between my digital source machines and a Lavry DA-924 dac. It is a machine designed for use by the mastering industry. I use it at home as part of my sound system. The reas...
|
|
[quote user="Romy the Cat"] For a casual observer it might appear that I am constantly fought with my ULF, finding and loosing better and worse configurations. It might be so but I have a very strong sense of objective of what I would like to ac...
|
|
Well, another page of my saga with APS regenerator is turned. I got the updated APS unit. It kind of “works” as I redefined the definition of word “works”. Under normal circumstances I would walk away from it but there are some moments in my “bad ele...
|
|
|
|
|
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: |
4 |
|
 |
|
|
Total human visitors: |
42,948,164 |
|
|
|
|
|
|