posted
I'll apologise in advance for the following long-winded question. I had a pair of MBQ QSD 213's, but one of the mids sht the bed so I grabbed a pair of JL VR 2-ways just to use the 5.25" mids as a band-aid for now.Currently the mids and tweets are in the doors, but I'm having fiberglass kicks made for 'em. I'll be putting Morel WR-6's in the doors. What do you guys recomend for high end tweets and mids for the kicks? Should I keep the MBQ QSD tweets I have now for the A-pillar to raise the sound-stage or should I use 'em in the kicks along with a new pair of mids? What size mids will yield the best SQ from the kicks? 4"? 5.25"? I loved the MBQ QSD 213's I had, but made the mistake of buying on-line instead of from an authorized dealer. The components will be tri-amped and the system will be completely active. Thanks everyone in advance, Martin
[ 06-05-2006, 10:14 AM: Message edited by: mjs ]
-------------------- Too much of everything is just enough. Posts: 391 | From: Boston | Registered: Oct 2005
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-------------------- Team Image Dynamics/Zapco/Werewolf/JK Lab Team Kinetik Sick Bastard Audio SQ Who feels it knows it Posts: 7993 | From: Charlotte,NC USA | Registered: May 1999
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posted
'98 Prelude. I'm gonna do what I have to do. I'd really like to make this the LAST upgrade for this car (high mileage). If I go with 2 pair of tweets I will also need more power.I figure that if I go that route I'll probably pick up 2 300/2's to run the mids/midbasses and use the 300/4 I already have for the 4 tweets. I'll be putting a high output alt. (and an Optima Bat. and upgraded cable) in before I make this last move. I can go as high as a few thousand if I need to. P.S. I've already got the Morel 6" midbass drivers at my house. I really wanted to go with 8" drivers for the doors, but it'd be too much labor to get it done right(I'm not confident I could do it myself). Martin
[ 06-06-2006, 07:20 AM: Message edited by: mjs ]
-------------------- Too much of everything is just enough. Posts: 391 | From: Boston | Registered: Oct 2005
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With that driver you don't need a tweet that can play as low as the ow1, but IMO it does the whole range so well why not use it. It also gives you more freedom should your car work better with a lower cross point between the mid and tweet
I suggested 4.5's as the kick area is small in that car...but a 5.5 is optimal IMo, but can be significantly harder to place right.
You would have to experiment with the tweets, but I've had good success with aux tweets crossed at 12k first order and attenuated properly....though in that car height is not as difficult.
I certainly wouldn't toss em
Once you get it installed you should find someone in Mass who has an RTA and a tuning ear...don't know where in the world you could find someone like that... Posts: 2276 | From: East | Registered: Jan 2003
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posted
Hey Eastcoast! That Scanspeak midrange you mentioned is a 2.5". Is that correct? I'll go with those OW1 tweets. Should I plan on putting the QSD tweets I have on the A pillars? I'm probably looking at the middle of July by the time I've got this whole system together and in the car. I'm very hopefull that I can a couple hours of your time to tune! ( I realize your time isn't free.) Martin P.S. After you answer my question about the 2.5" drivers I've got a couple more for ya....
-------------------- Too much of everything is just enough. Posts: 391 | From: Boston | Registered: Oct 2005
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Who is going to do the install? I know a shop that does good work but don't know how close it is to you...He is an Sq competitor who knows his stuff, and you would be better off to have someone like that do the work as opposed to an everyday shop.
Feel free to pm/email me...I may have some suggestions before installing anything.
Posts: 2276 | From: East | Registered: Jan 2003
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posted
Hey Eastcoast- the website I looked for that particular Scanspeak driver lists that model as a 2.5". I'm having trouble finding the Scanspeak homepage...have you got a link? Thanks, Martin P.S. I noticed the Hiqu tweets have an 8 Ohm resistance rating. Will I be OK running 2 pairs of the OW1's with a JL 300/4?
-------------------- Too much of everything is just enough. Posts: 391 | From: Boston | Registered: Oct 2005
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quote:Originally posted by mjs: Hey Eastcoast- the website I looked for that particular Scanspeak driver lists that model as a 2.5". I'm having trouble finding the Scanspeak homepage...have you got a link? Thanks, Martin P.S. I noticed the Hiqu tweets have an 8 Ohm resistance rating. Will I be OK running 2 pairs of the OW1's with a JL 300/4?
and no need to worry about the ohm rating on the OW1's the higher sensitivity makes up the lower ohm rating...
-------------------- Team Zapco, Team Audio Technology, Team Yo Moma, Team Werewolf, Team Audionutz... Posts: 70 | From: St.Louis | Registered: Jul 2005
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posted
Thanks guys. Is Madisound an authorized Scanspeak dealer? I made the mistake of buying MBQ QSD 213's online (not an authorized dealer) and I won't make that mistake again. Martin
-------------------- Too much of everything is just enough. Posts: 391 | From: Boston | Registered: Oct 2005
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posted
HI, try to not separate mb tweeters from the mids. Thatīs the reason people don`t like mb quart qsd or premium,even I. MB mids work best in sealed kick panels enclosure and near from the tweeters. Try to use them like a point sources or coaxial. Use the doors for mid-low applications. Use a mid-low with high QES and QTS parameters.
-------------------- EBR Posts: 32 | From: PUERTO RICO ? Email Us:Autofile@TheAutophile.com | Registered: Oct 2009
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posted
^what quart drivers are you using in a sealed enclosure? Except for midrange duties (4's and 5 1/4's) every Quart driver I have ever used wanted free air.
I can't imagine the size of a sealed enclosure you want want to get the 6 1/2" to play down to 40hz. It wouldn't fit up front and look even remotely good.
posted
I work with qsd,pce components.In free air application you loss output. I put a pair of qsd216 in a bookshelf in full range and the sound was amazing. I put them in various european cars "free-air" with dynamat with the same amp in full range and the sound was sloppy. Even I heard them in port enclosured doors and sound better. The thing here is someone that can built real good doors. Just for the record I have a car audio shop and i tried every speaker,amp,head unit etc... Dynaudio and Morel are my favorites. Check out both websides and look for the best mid and see various enclosures recommendations and see sealed, ported enclosures for the best performance in doors. In Morel is the SUPREMO and in Dynaudio is ESOTAR 2. The size of the QDS-216 sealed enclosure is 0.15 to 0.33 cu.ft.
-------------------- EBR Posts: 32 | From: PUERTO RICO ? Email Us:Autofile@TheAutophile.com | Registered: Oct 2009
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posted
20hz to 40hz is not a midbass frecuency region. free air application is more easy to you. Maybe for you; in full range is ok. Not all cars have the same space and "sealed doors". 0.15 cf is the smallest. 0.33 is good. Check alpine f-1 bmw and all the eclosures are sealed in mids and mid-lows.In other alpines cars using the cheaper components the trick was building sealed enclosures inside the doors. 90%of a good sound is produce by a good enclosure. See home audio stuff. Do you see free air cavinets
-------------------- EBR Posts: 32 | From: PUERTO RICO ? Email Us:Autofile@TheAutophile.com | Registered: Oct 2009
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posted
i've seen a few highend home cabinets that used free-air'd drivers, some had some form of 'V' shaped waveguide behind the drivers
Posts: 5501 | From: Columbus, OH - formerly FL | Registered: Oct 2003
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posted
I see different drivers in home audio. I don't see a Quart QSD in home audio. Enclosures should be dictated by the driver, not because you feel like it.
Do this take your .15 cubic foot enclosure with a Quart QSD 6 1/2 and put it on an RTA. Post the RTA screeen. I bet it rolls off like a friggen rock at 100hz.
20hz to 40hz is not midbass, but if you are going to set up an SQ system, it helps to be able to either have an up front sub or a driver that will play low with authority. The QSD will do that if you don't kill it in a small sealed enclosure. You are ruining that driver with what you are doing.
posted
I see different drivers in home audio. I don't see a Quart QSD in home audio. Enclosures should be dictated by the driver, not because you feel like it.
Do this take your .15 cubic foot enclosure with a Quart QSD 6 1/2 and put it on an RTA. Post the RTA screeen. I bet it rolls off like a friggen rock at 100hz.
20hz to 40hz is not midbass, but if you are going to set up an SQ system, it helps to be able to either have an up front sub or a driver that will play low with authority. The QSD will do that if you don't kill it in a small sealed enclosure. You are ruining that driver with what you are doing.
posted
No problem, you like free air, I preferred sealed and ported doors. You can contact RAY WINDSOR the OLD MB QUART expert, with the new name GERMAN MAESTRO. Ask him what is best for sq for a qsd 6.5 or the new M-LINE 6.5 when you're using subwoofers. I tell you freeair in full range applications is ok, but using with subwoofers isn't better. You play down your 6.5 to 20hz using sub at the same time. I don't want to hear your SUPER HI-END system. Maybe i lost hearing or maybe you heard grass groing.
-------------------- EBR Posts: 32 | From: PUERTO RICO ? Email Us:Autofile@TheAutophile.com | Registered: Oct 2009
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