Martin F1 Bass Box

Hallo biotec,
why indeed don't U come by then? Or anybody else 4 that matter, but please do let me know b4hand (set up appointments 2 be sure I'm in and not out playing) and/or since I could be in the middle of something needed to be kept secretive... Non disclosure agreements and all that intellectual property rights malarky U know...
My nearest tube station is Manor House and overground is Green Lanes. CSW-Chilli Sound Works, 91a Vale Road
'Dr' O


Edited by a1olsen - 26 October 2009 at 2:17pm

Dear James,
that's gd 2 know that my memory has not gone that much astray yet IE. We still have b4 us the potential pleasure of meeting face 2 face?
Did work and play some with Jody in and around OPUS in the wet country. I'm sure he has told about some antics and things round the 'Dr' O phenomena... (Vainness again - terrible I know - if only one could be Ernest'. Quote: Oscar Wilde).
Nice picture of the OPUS SUPER SUB!
Now b4 anybody get any good ideas about a replica, then please allow me to exclaim that this bin will only work with the dedicated and with much love devotedly designed and hand build by me bass drivers. You will not be able to find anything half suitable of the shelf...
This full mastodont of a monster horn was driven by an OPUS HD 2x1500W amp, so SPL's was very guaranteed (and more physically felt actually).
The mid-bass was done by a number (12?) of hornloaded symmetrical 2x15" trap bass bins, in by OPUS standard size, construction and not at least the bloody weight! OPUS utilize-d 1" thick best quality Baltic birch for their cabs. Very OK for install purposes though and Very nice bins in their own right 40-300Hz, 104dB@1W/1m 1000Watts RMS if memory serves me right - that's a mere or less 140+ dB spl per bin! incl. power compression. They where driven by the largest OPUS HD 2x2500W amp. Did anybody shout dynamics?

I should have some JBL 2382A? 60x40 flares (the best of their Bi-Radials?) available as well over there as well, should U fancy.
This about Tweets??? In the days of a very 'hardcore' Neo Radian 950PB availability? for a very decent price as well??? You can hear it here if U like... (just pisses over, around and on a B&C IMVHO...)
The gatecrasher system actually employed TAD 4001 Beryllium diaphragm AlNiCo 2" Drivers from 3kHz till well beyond most peoples hearing limit at that level... The Radian is not very far behind that one...
All the best
'Dr' O




Edited by a1olsen - 26 October 2009 at 7:54pm

Hi 'Dr' O!

Indeed, really nice designs which you are developing! In some cases it's not to overlook where you once were hired...
Primarily I wanted to say something about your Cluinn page, but since you mentioned that you wanna redesign and update the site in the upcoming winter months, I'll better wait for a while.
So, all of your own designed cabs are utilizing drivers handmade by yourselves?!
Would be very interesting to see! Does that mean that these drivers aren't a mass-produced article?
Where do you purchase the required components to asamble such a chassis?
Are there any specific machines desired?
Which material are the mid-/highrange horns of your tops made of?
As panoramix already wanted to know, does the C118B design utilize a big front chamber like in a BPH? I would presume that your 2x15 and 3x15" cabs are using this technology as well as a mysterious phaseplug?
Yeah, the monster sub reminds me on a club install in vienna's flex, which comprises a huge 2x20m² FLH with a length of 4m driven by 8x15" Beyma 15P1000 chassis. If you have the chance to get to vienna, you have to see rather hear this!
Gorgeous that you are sharing your know-how with us!
cheers

ps:
once again I'm sorry for my inquisitiveness, but there is so much what i still do not know about designing speakers. you live and learn!

u are right, we don't have the kangoroos, we have the alps, but I'm living near vienna in a flat region of austria. although you are welcome to come to austria for skiing!

Dear ibex,
many tnx for uploading the pics, but I have to say you know how to ask...
I have been working professionally for 25+ years in the Pro Audio business and have many successful commercial designs all around and behind me and still I have to say that my knowledge is limited and I'm still pushing some boundary's (and some/many times over) in order to learn how to design and manufacture good speakers...
Yes I do manufacture most cone driver/transducers in house and light to heavily modify HF devices.
I have a voice coil winder with mandrill tools accommodating for 3/4" to 6.5" dia. sizes and at least for £5k worth of wires in different sizes, shapes and materials in stock.
I have a whole wall full of selves with speaker parts on them, again in bespoke by me specified materials and qualities. Some of the spiders/suspensions, surround shapes and tools, is researched, calculated, designed and manufactured in house by me (said the dog).
I started doing my fully own transducer designs, when the very kind and generous technically founding father of B&W loudspeakers Dennis Ward, decided to mentor me and kitted me out with the coil winder (for refurb though) and allowed me to purchase his big magnetizer for a symbolic sum, plus providing me with a desk and workspace within his Audio Electronics company in Rustington, West Sussex. This form and degree of generosity is to me very obligating, so i have been busy since then, making all the before mentioned 'things'. In my days at Martin it was a matter of working closely together with the suppliers on OEM designs. Bill Woodman of ATC fame helped at lot in this respect. At Turbo we had Our own sister company in form of Precision Devices. That made more 'ground braking' designs possible. All this acquired knowledge together with that shared with my good colleges over the years is embellished in the product's you have b4 U! It's also possibly the only way 'to stand out from the crowd' and hopefully be able to ask decent money for your offerings. As a small example I can happily proclaim to be one of the very few (if not the only one), who's able to offer a double edgewound ' sandwich' coil IE. in-  and outside wound speaker coil with the wire on it's edge on both sides, on an of course severely modest commercial scale. No materials used in my product is there by fluke! it took me about 10 years to get the 11"/3" VC in NucleusTM and UrsusTM, to perform to the desired objectives and there's still some scope for improvement!
I have recently managed to get an amplifier to work 2wards the same objectives (and they R very simple: it just has 2 work...), after a mere 25 years of research and various proto type buildings. And I'm even educated to degree level in electronics with added acoustic modules...
In short - this is not a hobby for me. It's not even just a job, it's actually very much part of my life's fabric...
All the best
'Dr' Sven R Olsen
PS: If you feel like forwarding constructive suggestions to the up and coming hopefully improved CSW-Chilli Works site, then You are welcome and on my behalf encouraged to do so. Probably preferred as on a private mail basis, so it can hopefully facilitate 'my washing and laundry in private' please. And that is of course also an invitation to others under the same wished for auspices (framework)...


Edited by a1olsen - 26 October 2009 at 7:55pm

Hello mr. olsen..

a1olsen wrote: ... And that is of course also an invitation to others under the same wished for auspices (framework)...

...I hope you choose to jest!