Hi from 7V - diyAudio
Go Back   Home > Forums > Member Areas > Introductions

Introductions Welcome to the DIYaudio Community. Introduce yourself here so we can get to know you better!

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 11th February 2003, 08:25 PM   #1
7V is offline 7V  United Kingdom
diyAudio Member
 
7V's Avatar
 
Join Date: Feb 2003
Location: North London
Default Hi from 7V

Hi Everyone

I've already made a couple of postings on the Speaker Forum so I thought that it was time that I introduced myself.

My name is Steve Margolis and I've been playing around with hi-fi for over 30 years. My first stereo came about when I had an old, valve (tube) record player. I changed the cartridge for a stereo one, added an old valve radio for the 2nd channel (I dug around until I could connect the wires somewhere that worked - how I survived I don't know) and, voila, the magic of stereo.

My first speaker project came when I decided that the two speakers (from the valve record player and radio) would be better housed in identical cabinets. I knew nothing about cabinet design and, big surprise, I totally screwed up.

Next, I decided to build some speaker cabinets for my car stereo out of some polystyrene that I'd found. Mind-blowingly awful.

Realising that I was absolutely useless at something I really loved doing, I decided to get an education. I started reading books by Briggs, Jordan, Barenek, etc. Later on I subscribed to "Speaker Builder". I started to, finally, get a feel for the subject.

Some years and some designs later (1990) I formed a company called 7th Veil and designed my first professional speaker - the 7th Veil "System IV". Although I didn't get the funding needed to go into full-scale production, I was pleased with the speaker acoustically and aesthetically. If anyone would like to see a photo and more history of this speaker, please visit 7th Veil "System IV".

Now I have just designed a new speaker system, the 7th Veil "Nonsuch". It has a choice of separate box woofers, the "Little Awesome" and the "Big Awesome". I am very pleased with this design and am releasing this system commnercially and launching at the "High End Show" in Frankfurt, May 29 - June 2, 2003.

My philosophy is to design the best that I can, with an almost psychedelic degree of innovation but with one constraint ...
I only design room-friendly systems, ie. not too big and not too difficult to place.

Outside of my interest in hi-fi, I am married with 2 young children (aged 2.5 years and 9 months). I am a student and teacher of Ki Aikido and a qualified practitioner of The Feldenkrais Method.

I look forward to speaking to you all soon.
All the best
Steve
  Reply With Quote
Old 11th February 2003, 08:50 PM   #2
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Hi Steve
Welcome.
Looked at your site and saw those real good looking speakers.
You say you filled them with sand.
When I look at the drawing, looks like the sand could come down in the bass-tube!!
Of course I'm wrong, although I don't see the 'trick with the sand'
Speakers are full range. Is it a series/parallel construction?

According to my wife, the WAF is very good!!

/Hugo - won't tell his wife about the sand...
  Reply With Quote
Old 11th February 2003, 08:51 PM   #3
fezz is offline fezz  United Kingdom
diyAudio Member
 
Join Date: Feb 2002
Location: milton keynes, UK
... cool
im still on the digging in the amplfier till i gte something that works stage - so its good for another person here that can help me
  Reply With Quote
Old 11th February 2003, 10:25 PM   #4
7V is offline 7V  United Kingdom
diyAudio Member
 
7V's Avatar
 
Join Date: Feb 2003
Location: North London
Hi Netlist

Thanks for your compliments on the look of the System IVs. I really hope that the new speaker will have a still higher WAF and I'll be interested to get your wife's opinions once I have some photos (the NWF - Netlist wife factor). Seriously, I think that often it's the husband who chooses the speakers but his wife authorises the payment (or not)

Re. the System IV, yes you're right. The drive units were connected series/parallel so the final impedance of the 4 units was the same as the impedance of each unit. Incidentally, I could detect no adverse effect whatsoever from the series connection.

Originally, the cabinets were bolted to the stands and, I'm embarassed to say, I did have some problems with sand leakage (just read the Hi-Fi Choice review of September 1990). However, changing the coupling between cabinet and stand made a big difference to the sound quality and, at the same time, solved the sand problem.

The fibreglass egg (with a rectangular port leading to the stand) was completely sealed to the cabinet with silicon sealant. The sand is between the egg and cabinet. To visualize it, it helps if you realize that there's no sand in the stand or inside the egg. I still have a pair of these speakers and a friend has another and there's no trace of sand leakage, even after 13 years.

Thanks again for your feedback. I appreciate it.
Steve
PS: fezz, I think there were some typos so I haven't quite understood your post. Could you explain?
  Reply With Quote
Old 11th February 2003, 11:02 PM   #5
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
Hi 7V and welcome

How far is "just south", me being a Crystal Palace (ish) resident?
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote
Old 11th February 2003, 11:14 PM   #6
7V is offline 7V  United Kingdom
diyAudio Member
 
7V's Avatar
 
Join Date: Feb 2003
Location: North London
Hi pinkmouse

I'm near Oxted - 8 minutes from M25 J6. Sort of Croydon, Purley Warlingham, Woldingham and beyond.

Steve
  Reply With Quote
Old 12th February 2003, 07:33 AM   #7
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Steve,

Got the trick with the sand!

Maybe the WAF might improve if only the egg was visible.
(Just kidding)
I ones saw a drawing of a so-called ‘ideal’ speaker. It looked like a globe with a diameter of about 3/4m.
All the speakers (20 or more) were full range and placed all over the globe. Also, it was turning in all directions and claimed to be the best solutions to ‘spread’ the sound.
Of course this was only theory, I never saw such a speaker. I think it was impossible to build but fascinating all the way.

Anyway, I wish you good times here a DIYaudio.

/Hugo
  Reply With Quote
Old 23rd February 2003, 05:17 PM   #8
fezz is offline fezz  United Kingdom
diyAudio Member
 
Join Date: Feb 2002
Location: milton keynes, UK
Quote:
Originally posted by 7V
Hi Netlist

PS: fezz, I think there were some typos so I haven't quite understood your post. Could you explain?

(reads old post - looks scared) yeh - i dont blame you, i dont know what i was trying to say. but i think i said that i am still at the 'digging around in the amplifier stage' and i am glad that there are people like you that are here to help me
  Reply With Quote
Old 24th February 2003, 08:49 AM   #9
diyAudio Member
 
Circlotron's Avatar
 
Join Date: Jun 2002
Location: Melbourne, Australia
Quote:
Originally posted by 7V
Seriously, I think that often it's the husband who chooses the speakers but his wife authorises the payment (or not)
Is it a coincidence that fianceé is spelled so very similar to finance?
  Reply With Quote
Old 24th February 2003, 09:13 AM   #10
7V is offline 7V  United Kingdom
diyAudio Member
 
7V's Avatar
 
Join Date: Feb 2003
Location: North London
Quote:
Originally posted by Circlotron
Is it a coincidence that fianceé is spelled so very similar to finance?
No, I believe that the word "fianceé" means "about to cost a lot of money".

Nice to hear from you.
Steve
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



New To Site? Need Help?

All times are GMT. The time now is 01:48 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2