|
|
| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
|
|
 |
|
|
|
|
|
http://goodsoundclub.com/Forums/ShowPost.aspx?PageIndex=1&postID=6011#6011
The back chamber is very important...about half of the drivers energy goes back there so it needs to...
|
|
[quote user="Murataltuev"] anthony wrote:It is a compression driver with an 8" cone. If you want authority at 300Hz you will need diaphragm area. The Fane Studio 8M that Romy and plenty of others use for 100Hz up to 1kHz is an 8" cone driver on a 4...
|
|
[quote user="Murataltuev"] anthony wrote: Murataltuev wrote:So, the question is still opened: how to get 300-400hz.Perhaps give the JBL 2169H a try. It is supposedly very good from 300Hz to 2.2kHz, but I have never tried it. Use it in a sub 200Hz t...
|
|
[quote user="Murataltuev"]So, the question is still opened: how to get 300-400hz.[/quote]Perhaps give the JBL 2169H a try. It is supposedly very good from 300Hz to 2.2kHz, but I have never tried it. Use it in a sub 200Hz tractrix horn with a 4" thr...
|
|
[quote user="Murataltuev"] anthony wrote:EDIT: Not sure we are on the same page regarding frequency range for this hornWell, I don't have any other options.My 42Hz upper bass horn has flat frequency response in 70-300Hz range and -5db in 60-400Hz, s...
|
|
[quote user="Murataltuev"] anthony wrote:EDIT: Not sure we are on the same page regarding frequency range for this hornWell, I don't have any other options.My 42Hz upper bass horn has flat frequency response in 70-300Hz range and -5db in 60-400Hz, s...
|
|
That "curl" beyond 350mm in your diagram is what the LeCleach profile is all about...drop it and it is not a LeCleach anymore (it is more or less Tractrix) and the benefits of that profile to do with the horns lower range are lost. Besides, a 1m dia...
|
|
Putting together a speaker system that ticks all your boxes is a lot like doing anything else well: it is fine to experiment in order to find your range and learn your options but once you choose a path you must stick to it. Chopping and changing i...
|
|
[quote user="Romy the Cat"]
I never heard this concept and after looking online I need to say that it does
look very slick and very smart. There is a problem with DBA however. The DBA is
a very nice way to deal with the room modes and I presume th...
|
|
[quote user="Murataltuev"] anthony wrote:This configuration should give somewhere around 109dB @ 20Hz from 15w in room with cone movement of about +-3.5mm. That is still low excursion, and they are excellent drivers. Well, in this case, I also hav...
|
|
[quote user="Murataltuev"]Ok, I give up...I'll keep TH separated.DBA concept is interesting and I don't understand why it is not common in Home Cinema or studio installations.In my case I'll consider to make double TH - one pair in front and position...
|
|
Hi Murat,Personally, I would re-think the tapped horns being physically incorporated with the rest of the system. To start, from what I understand (I don't use a tapped horn) because they use both the front and the rear of the driver for sound, they...
|
|
[quote user="Romy the Cat"] anthony wrote:I am not sure how large to make the filter caps for
the DHT channel. At this stage I think I will start at 3000uF and perhaps
try altering it a little up or down once the system is stable. Hm, it is depend...
|
|
At this stage I am looking at running the two 440V supplies from separate secondaries of the same transformer and likewise for the two 240V supplies. The guy that is making the transformers thinks this will be the most effective way for my particula...
|
|
[quote user="Romy the Cat"]I think the piano project turn out to be a huge success. My baby
not only starts to play but start to compose. If somebody do not hear a clear
harmony in this then you have no ears.
[/quote]I showed this to my 4yo dau...
|
|
[quote user="Romy the Cat"] There is no aspects of minimization
of the inductor size. You can go to 30K, or 50K, or 100K input LPAD. The LPAD (which
is not inductive switched attenuators with good resistors) anyhow sites behind
the filter, so the ...
|
|
...not so much the design but the process...selecting timber...taking your time...modern construction methods and ideas applied to "the best" of old technology. More style than function, but perhaps they may just make some nice sounding stuff too....
|
|
That is so funny.
Maybe put Thomas in a tall chair and he will be right in the sweet spot...
...
|
|
Hi Romy,I am calculating crossover scenarios for the HF Channel (Channel F) and am hoping that you can remember a reasoning for using a 20K LPad instead of a larger value such as 30K or even 50K? As the larger impedance is used the value of the capa...
|
|
[quote user="Romy the Cat"]Generally I like it but I have some concerns, whatever rubber
feet and decompiles you will be using you will not defeat the vibration if you
have a few transformers and a few 500A input chose sitting at the bottom. You
w...
|
|
[quote user="Romy the Cat"] anthony wrote: Then
the AC-DC conversion on the first floor, filter caps and output transformers on
the third level with the amplifiers sitting proud on top. I don't want to
see any caps or transformers...just valves.P...
|
|
I got some time on the PC to start to think about how to layout the DSET. I plan to build it a little like a skyscraper: multiple levels separated by component groups and functions. So mains transformers, AC socket and perhaps time delay rel...
|
|
[quote user="Paul S"]The usual "trick" to "stop inductance" of wire wound resistors is the "old double-wound trick", like those offered by Mills:
http://www.soniccraft.com/index.php/resistors-mills-c-29_53
(and I think it is much the same for capac...
|
|
[quote user="Romy the Cat"]What do you mean the example of inductive Lpad? All speaker level Lpads are inductive. The speaker level Lpads work with low voltage and high current and therefore they use wire wound restive elements. Any wire wound compon...
|
|
[quote user="Romy the Cat"] anthony wrote:Sorry Romy, I was not clear enough, but the resistor
that I am questioning is in the Fundamentals Channel (not the MF Channel as I
believe you referred to in your previous post) between the OPT and the
S2....
|
|
Romy, thanks for the info on the chokes in the fullrange Milq.Today I have ordered more Milq parts this time for the power sequencing and bleed down. I decided to go for the relay sequenced bleeders for all four power supplies and figured I would be...
|
|
[quote user="Romy the Cat"]Well, they technically not Lpads but juts regular attenuators
even though they connected in “protective mode”. You can go with stabilized impedance
to maintain the high pass filter over the coupling capacitor to work prop...
|
|
[quote user="Romy the Cat"]I think it is about right. The 6C33C for upper base has 100K
biasing resistor and 20K to ground in Lpad. That would make ~60Hz. This high
pass that unload the LF from the horns that it can’t handle is very important
as y...
|
|
[quote user="oxric"]Anthony, and yes, you are right about Louis Eastman (owner of Studio AU) being based in the UK. It made sense to commission the horns from someone in the UK as these will be used here. Are you in the UK/Europe yourself? It would b...
|
|
[quote user="Romy the Cat"]Anthony, I think you take the right this in a wrong way.
Sure the quality of the coupling caps is important but you truly shall not be worry
about it. Make the amp, get comfortable with it and then change the damn cap.
I...
|
|
|
|
|
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: |
42,681,327 |
|
|
|
|
|
|