Recent content by Art Welter

Anna, A good option to avoid the off-axis comb filtering (peaks and dips, lobes) problems of multiple horizontal speakers is a single coax driver. The 4" B&C 4CXN36 coax would fit in your height requirements, in around a 2 liter sealed box response from ~95Hz-18kHz. B&C makes the FBCXN36...

I have not heard either, but the PM60 has a more efficient folded horn design, and a uses a co-axial mid/high compared to the T24's short conical front loaded 2x12" horn and 3" diaphragm HF driver, so it should achieve a higher SPL and sound cleaner than the T24. The T24 from it's Fb at 73Hz to...

Yes, the rear speaker's sound is affected by whatever is put in front of it, often detrimentally. The effects depend on the size, shape and reflectivity of what is in front. As mentioned, without proper polar response measurements the effects can't be determined. There are many examples (EAW...

The largest horn RCF makes is the HF950, 300 mm / 11.81 inches wide, like Peter said, a suitable size to match a 12" driver. The Limmerhorn 250m is 390mm wide (15.34") close to 15". How about that :sleep:?

The Limmerhorn 292 is 18" (470mm) wide, Peter was looking for a 15" (381mm) wide horn. The 292 is about halfway between the B&CME464's 22.6" (575mm) width and 15"...

Jack, Learning the circle of fifths would be a good introduction to music theory. For most, it is easier to grasp music theory concepts on a keyboard instrument. https://en.wikipedia.org/wiki/Circle_of_fifths You Tube videos can introduce you to music theory and production at almost any level...

If you are using the FAT 32 format, might be running into it's limitations-FAT32 only supports individual files up to 4GB in size and volumes up to 2TB in size.

DSP settings for the DCX 464 (or any other driver) depend on the horn used. Few horns will support 300Hz, crossing above 500Hz opens up a large variety. The mid section broadly peaks around 1.8kHz, the HF has fairly sharp dip between 5 and 6kHz. As Uwe mentioned, the DCX 464 has a wide overlap...

Since the moderators removed the post written in French complaining he couldn't get his old amps serviced by Harmon, looks like I revived the zombie.

Since Samsung absorbed Harman in 2016/17 and laid off most of the Crown employees, closed the Elkhart plant, moved production to Mexico, things changed. Lab Gruppen was acquired by Music Group in 2015, their service is difficult at best. Since it is cheaper to replace old USA products with new...

Josh Ricci's Gjallerhorn gets down to below 20Hz, big, complicated build: https://www.diyaudio.com/community/threads/gjallerhorn.189784/ His Skhorn is a 24x32x54" cab with dual opposed 18 or 21" pro drivers. All vents open 30Hz tune, 2 vents open 25Hz tune, 1 vent open 17Hz Fb. Huge thread...

The TL-15 is already over -8dB at it's tuning frequency (Fb) of 40Hz. Covering ports to drop the tuning to 28Hz will drop the response about another -6dB , requiring four times the power to compensate. If you are using the cabinets for anything other than a home stereo, the additional boost...

The 18 Sound XR1496C 90x60 has a smoother throat, looks like it would fit, has decent polars, though may not be as sensitive being wider vertical dispersion. The B&C ME90 80°x60° is similar.

The JBL VS3215-9 mid horizontal dispersion falls to around 60 degrees above 1kHz, it's on axis sensitivity probably near equal to the HF horn driver. JBL specs the crossover points at 300-and 1.3kHz. A 3" driver has about 4-5dB less output than a 4" as used in the stock VS3215-9 . Since you...

Kevin, A constant directivity horn like the 90x50 Limmer 250M sensitivity will be around -5 to-10dB at 18kHz compared to 1000 Hz, regardless of the driver used. Chasing a "flat " response at the very high frequencies any driver can run out of headroom quickly due to air (atmospheric) absorption...