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ralph waters

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About ralph waters

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  1. Hi Chris, Its funny how time goes by. Vanessa used to measure out all the wire before I wound them on to the formers for our crossover networks. I used to pay her for each length!!. How about that...you obviously went to Hurlstone Agricultural College together. I see you are now located in Cessnock. Is that still current? Ness is happily married with two wonderful children and living by the sea. I fled city life and went to the country. Thanks for the photos. I have no record of these speakers photographically speaking. This model had several iterations and I had actually forgotten how many times the design was changed.... This design had a rear firing super tweeter and a second midrange firing backwards. The sound stage was pretty good from what I recall. Anyways, thanks for getting in touch and I shall tell Ness about our conversation Kind Regards Ralph
  2. Any speaker which invokes spontaneous applause is clearly head and shoulders above the rest of the pack. Congratulations on your new design and I trust it will be internationally successful.
  3. Hi there, Good question.. Have you tried ringing the Krix factory?
  4. If you speak with Scott, tell him that Ralph Waters is utterly wrapt by the technology he is developing and offer him my personal congratulations.
  5. Item: Active loudspeaker Kt Location:Freight $20-00 Australia Wide Price: 750 Item Condition:New Reason for selling:Surplus Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: BEYMA Speaker Drivers – Woofer, Midrange, Horn Tweeter Introduction: As you probably know I founded the Richter speaker company and designed several very successful ranges of speakers before branching into active subwoofers and then into a separate company (SubSonic) which specialized in subwoofers plus a large floorstander with active subs built in. This kit is for a three way active system. Once you have heard a great active system, you will never ever be able to go back to a passive loudspeaker. This system is dynamic, low in distortion and has super wide dispersion. Scroll to below the pictures for the complete story...... I’m no longer involved in the industry high efficiency active loudspeaker × Type tags separated by commas. Required Item: Active loudspeaker Kt Location:Freight $20-00 Australia Wide but maintain a close interest. Some of you may have read the Speakers Corner pages at Spinnergeoff’s blog www.homeentertainment.com.au which I wrote and he edited – it’s all about the pros and cons of various speaker designs. Lots of info there for the hifi enthusiast and/or budding builder. In this blog you will find that I talk about several characteristics which are valued in hifi gear generally, and speakers in particular. Accuracy (although this is sometimes over-stressed), Frequency Range, and Efficiency. The one which will give you goosebumps and make you feel you are there, that the performance is live and kicking, is (on top of those mentioned) Dynamics. Low distortion is ensured since each driver is operating only within a strict bandwidth and protected with 24db/octave crossovers. No nasty passive components in the crossover! Wide sound field is perhaps the most underestimated aspect of any loudspeaker and this system has a sound stage around double a typical passive system. The five inch midrange is a key to wide dispersion. It covers the critical midrange and gives incredible dispersion.. The horn tweeter then takes over and goes right out to 20k. It will come as no surprise to most of you that speakers range upwards in price to the sky, and that the better-performing ones cost thousands, not hundreds of dollars. So how would you like to cut out the middle-men and build a pair of speakers that will perform like $10,000 ones, for $1250-plus amplification. The electronics (drivers and crossover) should cost only about $1000, while the cost of the cabinet will depend on the materials used. The stronger the better for this crew. You may like to use a separate subwoofer. This project will allow you to achieve a studio loudspeaker in the same tradition as Klipsch La Scala, EV, JBL or Tannoy. That’s true Hi Fi quality plus high spl's. Perfect for a nightclub, sound studio or to enjoy concert dynamics at home. It starts with the purchase of these unused Beyma drivers for just $750, which would otherwise cost much more – see below, probably about $1250. You will need three stereo amplifiers but the good news is that almost any amp is OK, as the load on the amplifier is vastly simplified when there is no passive crossover. For example, I have used a really cheap D class amp from Ebay on the tweeter section and it sounds great. I suggest around ten watts for the tweeter, around 35-50 watts for the midrange and perhaps 100 watts for the bass driver . Any amp up to 500 watts is fine for the bottom end. YOu should be able to pick up some suitable amplification for not much money. Another alternaive is to pick up a AV receiver and use the different channels to amplify the speakers. One 7 channel amplifier will cover the lot.. This is a very simple and economic way to go. These drivers are 2ea of: 1. High efficiency Beyma 96db/watt woofer rated at 350watts continuous Rolled cloth surround. Cast frame. Vented pole piece. 2. Beyma Midrange unit to match with cast frame, underhung neodymium magnet system 3. Beyma Horn tweeter with radial flare giving 70 degree dispersion Not just high performance, but long-lasting. All units should be fine for a fifty year life span, at least. The project will require a dbx electronic crossover ...https://www.storedj.com.au//dbx-234xs-stereo-2-3-way-mono-4-way-crossover?gclid=EAIaIQobChMIqIKa2cLO1wIVGQ4rCh18PA0vEAQYASABEgKggvD_BwE around the $330-00 mark. It will compare favourably with speakers costing ten times this amount. It will not match the $75k Krix Heretix system, but hey for the price you will get more than your fair share of quality sound. The woofer is mounted in a 100l box and the system will give a true 39Hz at around 94db/watt. Up to a 500 watt/ch amp can be used quite safely, as these drivers are pretty much bullet proof! The dbx cuts off frequencies below 40 Hz and sums them to a stand alone subwoofer ( not included in this project). 39H is actually far lower than most commercial hi fi speakers. The Wizard only achieved 48Hz for example and it was an immensely popular loudspeaker. The 24db crossover allows precise control of the crossover points and reduces distortion drastically as the drivers never actually receive a signal which is stressing the driver. NO passive crossover components (inductors, capacitors, rsistors) mean that the transient response is perfect and the control is perfect. You will find these components available elesewherevfor $330 for the midranges and around $170-00 for the woofers. Add the freight on top and you get a $1250 bill, so this price reflects a very substantial saving and the concept has been thought through carefully by me...for whatever value you put on that! I can help you with a general strategy in relation to design of bass and midrange enclosures. Ralph Waters Pictures:
  6. It is hard for me to comprehend why loudspeakers still contain passive components. Once a good active system has been heard, there is absolutely no going back to a passive loudspeaker. Have a look at Krix's latest addition...It uses of course active technology and horns....resulting is super dynamic and low distortion result. http://www.hifishow.com.au/news/krix-reveals-active-passion-at-2017-australian-hifi-show
  7. Hi there, This tweeter is perhaps one of the most famous tweeters ever sold. It was placed into many many brands of loudspeakers in the 70's and 80's. The first Richter Paladin sported these Peerless and they remain one of the best sounding tweeters ever made. They had a detailed and super silky sound which was breathtakingly subtle and beautiful...
  8. Hi there, Just wondering whether anyone has been able to audition the new Krix Heretix loudspeakers..Any thoughts on your listening experience? Ralph
  9. Hi there, I am glad that the culprit was the amplifier rather than my speakers! Kind Regards Ralph
  10. Item: Audio Authority Comparator - Access Location:NSW Price: $1600 Item Condition: Most modules entirely unused and new. Some have been used for a few months. Replacement cost is near six K...so it really is a very keen price. Reason for selling:surplus Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: This is an excellent comparator that uses a computer system at its core. A system bus communicates with the various modules and tells them what to do. Hi I am Ralph Waters founder of Richter Acoustics and I purchased this comparator from Geoff Forgie of The Music Room in Canberra. Geoff had only installed it for a short period of time when he closed the shop. So it has had very little use and 90% of the modules are brand spanking new and still in their original wrapping. I then stored it away thinking" someday this will be really useful". That day has not yet arrived and I am thinking that someone should benefit from this gear rather than be sitting in my lab in a box. It will compare inputs such as CD,DVD, preamplifiers, amplifiers and surround sound amplifiers. and of course loudspeakers. It will even switch six high current car head units....the system is still totally supported by Audio Authority. An add on module allows you to allow equal loudness listening for loudspeakers if you require. This module is not included ..I am just advising that it is advisable if you really need it. If you are interested I can give you a complete list of all the modules, but everything in the photos is included including a high current power supply. There are enough modules to set up an entire hi fi shop...It weighs about 15Kg all up I think... I can freight to you anywhere in Australia for this price! see Pictures:
  11. Hi there, I am so glad that your speakers are still giving you enjoyment. I cannot express just how satisfied that makes me feel, knowing that you have enjoyed decades of musical enjoyment. The curved panel sub was a great product and I regret in retrospect that we did not take it into production. It was two 300mm woofers in a 120 litre sealed enclosure. The drive circuit was very simple...it was simply a 12db octave of bass boost below the resonant frequency of the woofers. AND lots and lots of power. At that time big amplifiers were costly to build. This subwoofer needed about 800 watts to get it to work well. SO at the end of the day we did not go ahead. A sealed design gives away 50% bass output compared to a vented design, but has the superior characteristic of better transient response. This lack of bass output can be counteracted with more drivers and more power...and that is the route that we took with the Tsunamis. The Evokator was vented but we had a method of controlling transient response....so we had our cake and ate it too! I have no photos at hand of the Tsunamis, but I may have some in an old photo album, I shall try and dig them out. Thanks for your comments, they are most encouraging.. Kind Regards Ralph
  12. Hi Matt, The Evokator was groundbreaking in many ways....and probably ahead of any technology in the world at that time.....let me summarise. 1. It had a dynamic loudness control which actually emulated the Fletcher Munsen hearing curves and automatically compensated for the human ear perceived loudness of bass with precise accuracy according to volume level and frequency. 2. Instead of compressing the output signal in situations where overload would occur, the input signal was monitored. When the input was looking like it would overload, the lowest bass frequencies were progressively removed until the input signal was shaped so that amplifier overload would not occur. These low frequencies ( which cause overexcursion of the cone), were then restored as soon as the input signal was once again manageable. This process was happening continually and in milliseconds and so the Evokator could play very deep and very loud but could also sound exceptionally fast in speed. This combination I believe is very hard to achieve. 3. The circuitry could accommodate any woofer at all. The circuit could manipulate the behaviour of the woofer so you could simply dial up the Small Thiele characteristics of the woofer. This is still a unique feature. 4. The amplifier design itself is something that I am a little hazy on. It was brutally powerful due to its huge toroid transformer and multiple output devices and very reliable. I think it as a standard class B design.. We found the Evokator at the Energy corporation in Canada on their test bench. We had sealed most of the critical circuitry in resin so the secrets of this design are still not revealed. Energy could not unlock the Evokator's secrets!! Hope that is sufficient detail..But please get back to me if anything I have said is not clear.. Kind Regards Ralph Waters
  13. Hi there, These tweeters were made by Philips in Belgium. It is interesting that in 1974 I bought a pair of tweeters and they were made by Philips. I used Philips tweeters in the Mk1 Wizard. Eventually they stopped production and I had to source other brands, but I have always been partial to cloth domes and to tweeters with a conical waveguide.
  14. Hi there Mondie, Boy is your posting a blast from the past! I recall this trip vividly as Peter Stein from ME and myself travelled together. At the end of the show we packed up and just headed home. We were pretty tired after a lot of travel and long hours at the show and so I suggested we stop over at my sister's place in Canberra. We arrived in the wee hours of the morning so we simply decided to plant our sleeping bags on her backyard lawn. When she woke up in the morning, she found two frosty sleeping bags laid out on the lawn and was going to call the police ! I think it was the automatic sprinkler system that finally woke us up. Many of the shows were like that..long travel times, long show times and lots more travel. But the friendship and camaraderie between Australian producers was wonderful. I often travelled with Brad Serhan from Orpheus loudspeakers and we formed a very close bond. Around this time I started OZFI which has been largely forgotten. It was the Australian Hi Fi manufacturers guild and included all the main players of the time. The whole era was quite exciting . We really were a bunch of boys happily indulging our hobbies and passions rather than serious businessman! And that was always the attraction for me...to play music and to play in the sandpit!! Thanks for your posting! Kind Regards Ralph Waters
  15. Dear Shane, Thanks so much for taking the time to write about your Richter loudspeakers. I cannot tell you how heartened I am to hear that you have received years of enjoyment from them. And how much they sweetened your life's journey and became part of your history. That news tells me that my endeavours were well worth it. I know what it is to blow your entire savings on sound gear. I recall only too vividly at age 12 , when I spent every penny I had saved on a pair of Coral 8CX50 speakers ( still have them and they still sound wonderful), a Peak stereo amplifier and a turntable. Music was my life.. I tried very hard to make Richter as much as possible Australian made. I worked very closely with Magnavox Australia ( no relation at all to the overseas brand), to develop woofers that were fast and low in distortion. It was a slow and arduous process, but I attribute much of the success of the brand to Magnavox and their magnificent hand assembled Australian made drivers. We used Australian wire in the inductors, Australian made resistors and all the cable was Australian. Many of the early models also used Australian made capacitors. I really hoped that the brand would be by Australians for Australians. Australians like you! I also worked very closely with Graham Jones from JJ cabinets and without his efforts Richter would never have birthed in the first place. So I guess that 25 years on, I am very encouraged that this obsession with Australian made, was worth the effort. I think the best part of Richter for me were the great friendships I made with retailers and consumers alike. Without this aspect the journey would have been quite empty The logo of Richter was " A nice way to say Australian". Sadly, I understand that the speakers are now all made overseas. So thanks once again for sharing your story. I was immensely pleased to hear from you..... Kind Regards Ralph Waters
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