Rerurn to Romy the Cat's Site


In the Forum: Horn-Loaded Speakers
In the Thread: Making it sing...
Post Subject: I do not think I said a lot….Posted by Romy the Cat on: 7/7/2005

buy mirtazapine 15mg uk

buy mirtazapine

Scott,

 skushino wrote:
- Remove L-pads from mid and tweeter (sounds a little brighter, yet "more pure" and "better" to my ears)

Lpad sets the attenuation and this is the parameter that should be tuned without fantasizes and subjectivism. Get RTA and set the band-pass of acoustic pressure form the channel identical. In context of 4-chanal installation the canals do affect and do mask each other but still to set them evenly is the very basic and very essential think to do. Later on when you get some experience between what you do and what you hear then you might bend the rules and shape the sound in the way you wish (and I do not think that it would be correct thing to do) but nor now set them evenly.
 skushino wrote:
- - Remove the 1.5mH coil from the woofer.  Again, sounds clearer w/o the coil to me.  Any adverse impedance matching issues?

This coil is low pass filter over 1K and it has nothing to do with “impedance matching”. The necessity of this coil is subject of VERY many valuables: how the coil of the MF can scent it electrically, what the design of the woofer in this horns, the design of the horn, and in the end of the ends: how you upperbass channel sounds at it higher knee…. With some woofer and with deep enough harms you might not use this filter at all… it all depends….
 skushino wrote:
- - - Add a 80Hz 1st order high-pass filter before the amps. The Welbornes have 100k input Z, preamp has 130ohm output Z. Install a .02uf cap at the amp inputs or pre outs.

If your horn has 80Hz flare rates (or least what Bruce states) then 80Hz order high-pass it too high. I would start form ~40Hz to unload the LF form it. However, I would be questioning if it really were necessary. First of all this horn has back chamber that changes the rules of the game and marks the horn less sensitive to the overload the flare with LF.  Second, Bruce used the fairly low Fs driver in there with large trout that makes them to act at lowest cut off as the direct radiators…. I very much doubt the it would be necessary.
 skushino wrote:
- - - - Use the S2 lower ~1100Hz replacing 5uf cap with 10uf cap

Are you saying that S2 has not as good lower mid range than heavy and dirty EVM15L? Well, I disagree and at my taste you cut S2 too abrupt. Not to mention that you have it sitting in the 330hx horn…
 skushino wrote:
- - - - -Fane ST5022 bullet tweeter, 8 ohms, 1 uf cap, 2.8dB L-pad

Get rid the L-pad and move the Fane up on the slope. Try to run it with ~ 0.3uF

Rgs,
The caT

Rerurn to Romy the Cat's Site