Richard Long's Waldorf restoration

[Charles0322]

In some ways, I prefered the sound from my 4530 over the 4520.

4530 have a tight articulate bass and impressive kick. It's missing some roundness in the bass though. The Waldorf has the same 7ft horn length as the 4530 but with larger mouth and much bigger rear chamber. which should allow to get tight yet deper bass. I think it will be an improvement over the 4520 and 4530.

I was an employee of Stereo since day 1, after the first fire.. I no longer worked there.. I have been recently and am not impressed with the changes.

I am looking into options for a smaller style system.. some flying stacks mixed with RLA emeralds..

was looking into driver options, JBL, TAD, BMS perhaps the homegrown Transparence..

2395 and walnut 2397 combo maybe.. within a 4350 style flying cabinet.

Some of the DIY work on here is on par with exceptionally fine cabinetry. I myself am a cabinet maker and although speakers often get dismissed as "boxes" the pride and craftmanship on this board is inspiring to say the least.

On the Waveboard I have been pouring over the thread where they are talking about mixing various types of cabinets

LansingHeritage is one of the most interesting and informative sites for my interests.

[Ruediger]

Are You guys aware that Richard Long used the dbx boom box in his installations? The current model is the 120A. W/o the boom box something (a lot) will be missing.

Ruediger

[louped garouv]

Are You guys aware that Richard Long used the dbx boom box in his installations? The current model is the 120A. W/o the boom box something (a lot) will be missing.

Ruediger

only if you are playing the older disco, soul, and funk cuts...

those boomboxes can add too much synthesized
bass to more modern productions/works -- of course -- IMHO and YMMV

[Eaulive]

only if you are playing the older disco, soul, and funk cuts...

those boomboxes can add too much synthesized
bass to more modern productions/works -- of course -- IMHO and YMMV

True. I have the DSP version of the 120A in my driverack and it sounds horrible on newer recordings with already lots of VLF material.

[Horn Fanatic]

I just found this thread today. I'll try to put this as tactfully as I can. I'm a bit disappointed at how little some folks on this forum know about rear loaded horn design.

This comment especially caught my eye;

"I still think that a back loaded horn with a 2.9m path (9.5ft) tuned to 30Hz..."

I don't know what he means by "tuned", but as a matter of fact, the path length of a rear loaded horn has nothing to do with the horn cut-off frequency. Horns are not "tuned", bass reflex enclosures are tuned.

And this one;

"Experimentation will also be done by increasing the rear chamber volume..."

A comment by one who doesn't understand the relationship between the chamber volume, horn throat, and horn length.

I don't mean to offend, but I'm reading some misinformation here that begs to be cleared up.

[speakerdave]

I'm sensing a lot of bated breath. Perhaps you could fill us in or provide links to good information.

[Lee in Montreal]

Well, I am awaiting enlightement.

[Horn Fanatic]

Well, I am awaiting enlightement.

Allow me to ask you a question.

Do you know what the function of the chamber in a rear loaded horn is, it's relationship to the throat, and why in concert as an acoustical element, they dictate the length of the horn?

Have you ever wondered why, in JBL literature regarding the 4530 and 4520 enclosures, where it's written that the speaker acts as a direct radiator above 150 cycles?

Do you know how the proper horn cut-off frequency is determined for a given driver? Hint, it's not fs.

Last question for now. Are you familiar with filter math?

[NickH]

Ya I can relate. I have my in my second story game room. Getting them upstairs was not fun. Those would probably end in a trip to the hospital, .

I'm buying 2226's to put in mine. I'm currently running mine with a qsc gx7 running some parts express Dayton pro 15's in them in parallel. The tops are 2446's being driven by a jbl 6260. Its quite the experience. They can get up to 120dba at my chair. And it sounds quite nice at that volume too, but not for long if I do it too much. Don't need to kill the ears. I use a minidsp for the crossover at the moment. I'm working on a analog crossover at the moment to replace it. The minidsp is limited on its output voltage. Plus I'm still trying to get over the analog psychosis too.

That bass wump is really addictive. I've honestly considered not even running a sub with mine high passed at 40hz too.

Nick

[more10]

Anyone who wants to educate himself about horns and horn theory, http://www.hififorum.nu/forum/topic.asp?TOPIC_ID=82144. It is in Swedish but the links still works :-)

Everything there should be sound engineering and science, except for the stuff written by Jonathan Weiss .

[Horn Fanatic]

Anyone who wants to educate himself about horns and horn theory, http://www.hififorum.nu/forum/topic.asp?TOPIC_ID=82144. It is in Swedish but the links still works :-)

Everything there should be sound engineering and science, except for the stuff written by Jonathan Weiss .

I found a translation to that forum thread some time ago. Nothing there piqued my interest except for mention of a rear loaded horn enclosure designed by a chap named H.H. Klinger. I actually obtained a copy of his book on loan through the library in Malmo. Oddly enough, he recommended loading his enclosure with an EVM 15L.

[Lee in Montreal]

Yowsah!!! Did anybody piss in your cereals this morning? Just out of nowhere, you revive a 4 year old thread and give shit to everyone...

[Horn Fanatic]

I'm sensing a lot of bated breath. Perhaps you could fill us in or provide links to good information.

I'm sensing sarcasm. As for links? What I reveal here does not come from links, it comes from years of study, research, testing, and practice based on the writings of a who's who of acoustical and electrical engineers dating between 1919 to the mid-seventies. It is those articles and books I used as a basis for writing my horn design program, not buying into canned software. It hasn't failed me yet.

[NickH]

Damn, now I have to build 2 new bass horns now, lol.

Very nice build.

How do they perform?


Nick

[Carl_Huff]

Damn, now I have to build 2 new bass horns now, lol.

Very nice build. How do they perform? Nick

They work surprisingly well. With a little EQ they reach reliably into the mid 30's, are very 'live' sounding. They definitely have that dance club 'wump' to them when pushed. I have been using them with JBL 2360 horns loaded with BMS 4590 coaxial CDs. The combination can be overwhelming.

Frequency response is shown back in post #88 when I had the cabinet loaded with 18 inch JBL 2240 drivers. The drivers in the recent PIC are 15 inch TADs. The TADs are a little smoother and extend a little lower. These cabs are the size and weight of a refrigerator, but a whole lotta fun!
_____________
Best Regards,
Carl Huff