One for the old school.. ATC EC-23
Printed From: Speakerplans.com
Category: General
Forum Name: Electro Frying Forum
Forum Description: Talk about drivers, processors and mixers
URL: https://forum.speakerplans.com/forum_posts.asp?TID=40514
Printed Date: 19 April 2024 at 2:13am
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: One for the old school.. ATC EC-23
Posted By: shagnasty
Subject: One for the old school.. ATC EC-23
Date Posted: 25 June 2010 at 8:20pm
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Just a random one here, me and the missus have just bought a small 3 way C-Audio SR rack to power our Turbo top boxes (getting bored of looking at the QSCs) and it came with a ATC EC-23 crossover in the top, looks really nice, 2U 3way stereo and tamper-proofed to boot! But a quick Google show nothing other than they seem to mainly live in studios now days, anyone have a manual or set-up guide or even some spec for this beast, seems like it would run a Genelec studio monitors well in the mix room if I can re-configure it correctly to do so, I will call ATC on Monday, just being impatient really..
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Replies:
Posted By: madboffin
Date Posted: 26 June 2010 at 12:24am
Yes, they are very nice crossovers. The person to speak to at ATC would be Tim Isaac, who designed it. There were a few versions of these over the years, the circuitry was the same but the metalwork and PC boards changed. There was also a version made for Roger Quested some of which had an added mono sub channel. It's a 4th order 3-way crossover and the frequencies were normally around 360 and 3600 Hz to suit the ATC midrange domes. The frequencies are determined by resistors on plug-in headers so they are easy to change. The limiters are exceptionally good but might need modification (resistor change) to increase the range of adjustment to suit amplifiers that need a lot of drive voltage. Despite what may be written on the back panel, these crossovers normally have electronically balanced inputs and outputs. Tim has also designed crossovers for Turbosound (he was a founder of the company in the early 70's and held the original patent for the TurboMidDevice) and for EAW and Martin Audio. He also designed amplifiers for several manufacturers, and the legendary "fan amps" for the old Turbo Festival rig. |
shagnasty wrote:Posted By: soft-dome
Date Posted: 28 June 2010 at 5:18pm
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Hi Shag, Two of my favourite old school bits of kit SR series amps and an EC23. I've got a EC23 that I use for my ATC SCM100's they are the older original passive versions, although I've also got a pair of active SCM 50A's as they're more wife friendly. I've got a PDF of the manual that I can send you if you don't have any luck with ATC, when I was trying to get a copy of the manual I was told by ATC that they didn't have one, although a guy selling a EC23 on ebay was kind enough to send me a copy of his manual. Drop me a Pm if you want it. Stu |
Posted By: shagnasty
Date Posted: 03 July 2010 at 1:00am
I deally I would rig this to run our 3way active TMS-4s but I need to be able to overlap crossover points to do this nad I am not sure the EC23 can....
:-)
S
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Posted By: Robbo
Date Posted: 03 July 2010 at 10:10am
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If I remember correctly, ATC built a 3 way stereo Xover model purely for PA use many moons ago and I think the Xover points were possibly 250hz and 1.5khz which would have been suitable for most systems at the time---It was also one of the few units at the time to have limiters built in as standard----If it is one of these that you have and not the studio monitor version then the Xover points should be able to be changed by using different component values but obviously you will probably need an old skool type of experienced audio engineer to be able to do this----Also, why on earth do you want to overlap Xover points on TMS 4s as all of the drivers are out of phase with one another so it will sound worse not better.
I know it probably sounds daft, but a Berry DCX will sound better(with correct time alignment settings) than the ATC ever will when running horn loaded cabinets such as TMS 4s.
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Posted By: shagnasty
Date Posted: 03 July 2010 at 12:06pm
Properly set-up the 1" on a TMS box runs quite away into the 10" from memory 10" runs 250-5Kish and the 1" run from 3k4 to out. this means you get all your vocal thriugh the 10". We currently run them off a pair of DCXs but I have gained the EC as part of a rack and fancied having a play as if I can rig the thing to run TMS I can always use a pair of TMS2s or 4s as 3way active side fills.
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Posted By: Robbo
Date Posted: 03 July 2010 at 1:15pm
Yes---Thats what happens when you run the TMS4s two way active using the built in HPF on the 1" which is 3.4 or 3.6khz and the 10" is left to run open untill it naturally runs out of steam, but if you run them three way active using those Xover points then the 10" will shut off at 3.6khz where the 1" horn starts so you would not have any overlap at all---TMS4s really come alive when run three way active as you can set the time delays spot on and it makes a hell of a difference to running them in two way standard passive mode even though they still sound great when run like this---They have always been my personal favourite all time PA box---just a shame that they never did a trap version.
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Posted By: shagnasty
Date Posted: 03 July 2010 at 1:36pm
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The turbo recommended setting include an overlap, the old FDS-360 cards overlapped as does the map in the LMS-700, not a lot but a bit.
I also run the 18s down to 35Hz but have my subs run upto 110 which seems to let the faster 18s in the TMS4s really go while the 718 or 721s provide some real grunt...
I have to agree the TMS4 is the best sounding single box to leave partridge green!!!
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Posted By: DCdane
Date Posted: 06 October 2012 at 7:11pm
| I would really appreciate a copy of the ATC EC manual as well. Thanks! |
Posted By: shagnasty
Date Posted: 06 October 2012 at 10:26pm
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http://www.fxtreme.co.uk/s-plans/ex23.zip" rel="nofollow - ATC EC 23 Manual
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Posted By: 4D
Date Posted: 06 October 2012 at 11:31pm
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roff topic but any excuse.. a few of my old boxes from back in the day,  ------------- DMZ. "The bass was intense. Girls were literally running up to stand next to the subs" |
Posted By: shagnasty
Date Posted: 07 October 2012 at 10:52pm
Still the best sounding single box to leave Partridge Green, bar, NONE!!!
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Posted By: 4D
Date Posted: 08 October 2012 at 11:40am
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Still off topic but.. ------------- DMZ. "The bass was intense. Girls were literally running up to stand next to the subs" |
Posted By: shagnasty
Date Posted: 08 October 2012 at 11:44am
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I have the 404-607-707 with a pair of bridged 707s on subs and all I can say is comeback powersoft all is forgiven, C-audios appear to have got heavier since I was using racks of them!
I run Soundweb but yeah, they do sound good...
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Posted By: duck1
Date Posted: 29 October 2019 at 5:03pm
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Hi All, Does anyone still have a copy of an ATC EC23 manual they could share? The link on this thread seems well expired! Thanks in advance! |
Posted By: Twangbar
Date Posted: 14 November 2020 at 4:24pm
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Reviving an old thread. I have just purchased an EC23 and was wondering if anyone had a manual they may be able to post or share? I have not contacted ATC yet, but I will try that later this week. Thanks!
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Posted By: taurusty
Date Posted: 15 November 2020 at 2:17pm
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Morning. Anyone know what happened to Shagnasty? Don't see him on here anymore... |
Posted By: cravings
Date Posted: 15 November 2020 at 8:27pm
| Ah he appears here the odd time.. as blueboxjunkie.. he was banned though as far as I remember. |
Posted By: Noyzmunky
Date Posted: 16 November 2020 at 10:20am
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We loved those 8 TMS4 for years. Nose sold them on a couple of years ago I believe. Great boxes. ------------- my name is Inigo Montoya...you killed my father, prepare to die!. |
Posted By: imageoven
Date Posted: 16 November 2020 at 12:21pm
'Boxes-R-Blue' I believe ------------- Keep pushing on, things are gonna get better. |
Posted By: madboffin
Date Posted: 16 November 2020 at 2:16pm
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I have an early version of a user guide, which is very basic and probably doesn't tell you anything you already know. Also an original spec sheet, with some of my added notes. I have scanned these - they are quite large files but if you contact me via PM with an email address I can send them to you. -------- I miss Sean's contributions to the message board. Always entertaining and informative, and not afraid of speaking his mind! |
Posted By: imageoven
Date Posted: 16 November 2020 at 2:20pm
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He posted less than a month ago. ------------- Keep pushing on, things are gonna get better. |
Posted By: Twangbar
Date Posted: 13 January 2021 at 3:22pm
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Much appreciated madboffin! FOr some reason though, I do not see any PM system enabled. Maybe because I have only posted twice (including this one)? |
Posted By: JonB67
Date Posted: 13 January 2021 at 7:17pm
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Yes you need 10 posts to get access to the pm system
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