ATC SM75-150 mid dome

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   Can anyone recommend DCX2496 eq setting for flattening the response of this driver? Most sources say it needs eq but don't give any specifics. 

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Fordy Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 02 March 2009 Status: Offline Points: 365	Post Options Post Reply Quote Fordy Report Post Thanks(0) Quote Reply Topic: ATC SM75-150 mid dome Posted: 10 March 2009 at 5:37pm
	Can anyone recommend DCX2496 eq setting for flattening the response of this driver? Most sources say it needs eq but don't give any specifics.

jonminns Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 13 April 2008 Location: United Kingdom Status: Offline Points: 1877	Post Options Post Reply Quote jonminns Report Post Thanks(0) Quote Reply Posted: 10 March 2009 at 5:40pm
	Best thing is smaart, lappy, souncard, measurement mic and a few hours

S DeXter Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 12 May 2008 Location: Moon Status: Offline Points: 1268	Post Options Post Reply Quote S DeXter Report Post Thanks(0) Quote Reply Posted: 10 March 2009 at 7:47pm
	Good choice of driver, i can't recommend them enough (when you can get hold of them). I EQed mine flatter but i think it sounds better without to be honest. Try -3db @ 3.04khz q 0.7. (You will have to have this on both the tweet and mid). This may be due to my choice of tweeter but after studying the FR graphs of both i definitely think it is the ATC causing the presence. I think you will find that ATC don't EQ it either. Flat is not necessarily 'better'. The net result is it biases the midband below a bit more which to my mind is undesirable. Depends what application you are using it in as well. Nearfield / far field.

Fordy Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 02 March 2009 Status: Offline Points: 365	Post Options Post Reply Quote Fordy Report Post Thanks(0) Quote Reply Posted: 10 March 2009 at 8:58pm
	Cheers mate, I'll try it out. Btw using Raal 140-14d ribbon tweets; they're well worth taking a listen to if you get the chance.

S DeXter Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 12 May 2008 Location: Moon Status: Offline Points: 1268	Post Options Post Reply Quote S DeXter Report Post Thanks(0) Quote Reply Posted: 10 March 2009 at 9:09pm
	14d? i can find the 15d, how does it compare to the likes of vifa and scan-speak soft dones/ring radiators....? Also where can u get them in the uk?

Fordy Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 02 March 2009 Status: Offline Points: 365	Post Options Post Reply Quote Fordy Report Post Thanks(0) Quote Reply Posted: 10 March 2009 at 9:31pm
	Sorry meant 15d! Used them to replace Scan Speak domes as part of a higher power 4 way system build. They sound quite different, in a good way, but it's hard to describe. One thing for sure is their sonic character remains constant however hard you push them, whereas the domes would tend to increase in distortion steadily as the power increased. I run them off an RMX850 and they keep up with a 1500w Mycro x sub. I had to get them from Madisound in the states, but you can get replacement ribbons, support etc. direct from the guy in Serbia who makes them.

S DeXter Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 12 May 2008 Location: Moon Status: Offline Points: 1268	Post Options Post Reply Quote S DeXter Report Post Thanks(0) Quote Reply Posted: 10 March 2009 at 10:22pm
	Thats a peculiar setup you've got... Is it some kind of small rig or is it a home stereo / monitoring setup... I am bemused at the choice of an RMX850 to drive tweeters....?

Fordy Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 02 March 2009 Status: Offline Points: 365	Post Options Post Reply Quote Fordy Report Post Thanks(0) Quote Reply Posted: 10 March 2009 at 10:36pm
	It's a home system that started off fairly domestic many years ago and ended up fully pro albeit with a Jbl top crossed above 400 to ATC and Raal. I used to use pro amps just for the bottom end but decided to use them across the board so I could drop the gain and keep the signal high upstream. Also it's an amp I'll have for years and may use in many other configurations. It's all very silly but sounds beautiful.

sKs01 Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 11 April 2008 Location: sheffield Status: Offline Points: 1744	Post Options Post Reply Quote sKs01 Report Post Thanks(0) Quote Reply Posted: 10 March 2009 at 11:04pm
	any chance of some pics of that set up? youve got me well intrigued.
	You're a big man, but you're in bad shape. With me it's a full time job. Now behave yourself.

S DeXter Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 12 May 2008 Location: Moon Status: Offline Points: 1268	Post Options Post Reply Quote S DeXter Report Post Thanks(0) Quote Reply Posted: 10 March 2009 at 11:21pm
	Im intrigued by these Raal drivers, shame you cant get them in the UK. I would be a bit concerned having something that fragile (and expensive) shipped from America... I think the 150S and the Raal 14d look like a good match on paper

Fordy Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 02 March 2009 Status: Offline Points: 365	Post Options Post Reply Quote Fordy Report Post Thanks(0) Quote Reply Posted: 11 March 2009 at 9:29am
	Stereo seperation not ideal, but that's what headphones are for

S DeXter Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 12 May 2008 Location: Moon Status: Offline Points: 1268	Post Options Post Reply Quote S DeXter Report Post Thanks(0) Quote Reply Posted: 11 March 2009 at 4:52pm
	Yes my home stereo is mono at the moment, but never mind, stereo isn't all its cracked up to be I've seen that before... and i bet it has a fantastic sound even though an 'audiophile' would disagree (they hear things with their eyes).