Martin W8C drivers |
Post Reply | Page <12 |
Author | |||||
cravings
Old Croc Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7442 |
Post Options
Thanks(0)
|
||||
madboffin: any idea which PHL the dls1738 in the W3 is? it says it's an E-17, and it's 16ohm..
|
|||||
madboffin
Old Croc Joined: 03 July 2009 Location: Milton Keynes Status: Offline Points: 1538 |
Post Options
Thanks(0)
|
||||
Sorry, I don't know that one. The W3 was designed after I left.
On the older systems the Martin stores part number included some elements of the driver manufacturer's part number, but they stopped doing that eventually. |
|||||
izzzzzz6
Registered User Joined: 06 July 2012 Location: france Status: Offline Points: 45 |
Post Options
Thanks(0)
|
||||
Hi. I am on the verge of buying 7x PHL 1050 as a DSP fault blew 6x mids in my W8CT's and later a W8C also blew a mid trying to keep up with the bass because my CT's were not available or perhaps it was a DJ error, i was not able to be in the room all the time as we had two rooms at the time.
I came close to getting someone to wind me new voice coils but it never worked out and PHL (THPL) do not want to get involved in spares or repairs. Really i want to upgrade to something with a higher power handling but apart form the PHL 1510 which s both v expensive and also does not have an inverted dust cap to help fit close to the phase bung the only other 6.5" drivers i can find with higher power handling are mid bass drivers. But do you think this could work, something like the B&C 6mbx44? After all i will be only using it between 794Hz and 3k24 The PHL 1050 has the back of the chassis holes closed off with plastic shutters which are simply glued in place. If i replace with 1050's i only need 7 but if i replace all 6.5" drivers i will need 14x drivers so i don't really want to go crazy on price. I was just wondering if the W8C have a different impedance to the W8CT as the CT's have 3x 6.5" per cab and the W8 only 1x 6.5" per cab having 3x 16 ohm in parallel makes the mid channel around 5ohms per cab but should a W8 really have a 16ohm driver if you are say only using a few cabs rather than a load in parallel? I am wondering what the OP had in his cabs and why they were 8ohm? Any ideas or insights would be appreciated.
|
|||||
Sound
|
|||||
izzzzzz6
Registered User Joined: 06 July 2012 Location: france Status: Offline Points: 45 |
Post Options
Thanks(0)
|
||||
Today i installed a pair of B&C MBX-4416's and had also installed a set of L12L750's
I would like to see if there is a better more modern compression driver to keep up with the rest. I had to shorten the phase bung by around 1cm and cut almost 1cm out from the bracing behind to fit the slightly longer neodymium magnet. All the work was done with an angle grinder and cutting disc + a dremel tool. I'll be listening and comparing them over the next few days.
|
|||||
Sound
|
|||||
brokenjoe
Old Croc Joined: 31 May 2009 Location: Birmingham Status: Offline Points: 3722 |
Post Options
Thanks(0)
|
||||
should've kept them original .
one of the best sounding boxes by my ears - |
|||||
error 404
|
|||||
jacethebase
Old Croc Joined: 23 September 2009 Location: Somerset Status: Offline Points: 5699 |
Post Options
Thanks(0)
|
||||
Agreed! My only downfall with them is the compression runs out of steam before the rest of the box. Sound quality is fine just be nice if it were a bit louder :)
|
|||||
www.wedding-production.co.uk
www.stage2sound.com |
|||||
brokenjoe
Old Croc Joined: 31 May 2009 Location: Birmingham Status: Offline Points: 3722 |
Post Options
Thanks(0)
|
||||
thing is, they sound so clean its hard to notice how lud the feckers are. i've thought it was run quiet, and had my ears ringing the next day a few times
i just hate stacking the buggers :) |
|||||
error 404
|
|||||
Digbethdave
Registered User Joined: 16 November 2018 Status: Offline Points: 406 |
Post Options
Thanks(0)
|
||||
You miss stacking them! |
|||||
jacethebase
Old Croc Joined: 23 September 2009 Location: Somerset Status: Offline Points: 5699 |
Post Options
Thanks(0)
|
||||
Love stacking wavefront in a draped cow shed with a disco light spinning for some sort of light.
|
|||||
www.wedding-production.co.uk
www.stage2sound.com |
|||||
brokenjoe
Old Croc Joined: 31 May 2009 Location: Birmingham Status: Offline Points: 3722 |
Post Options
Thanks(0)
|
||||
3 high?
ratcheting them was always fun too but absolute fave is flying them on your own, when venue "forgot" to hire a genie |
|||||
error 404
|
|||||
Digbethdave
Registered User Joined: 16 November 2018 Status: Offline Points: 406 |
Post Options
Thanks(0)
|
||||
You just balance them on your head and use ya arms to attach.
|
|||||
izzzzzz6
Registered User Joined: 06 July 2012 Location: france Status: Offline Points: 45 |
Post Options
Thanks(0)
|
||||
I just summarised the work i have done so far and lost the entire message. I'll try again to make a brief summery as that took over an hour to put everything together. Hopefully someone will find some of the info interesting or useful. Sorry to all the purists. W8CT's I'm leaving them as standard but i found they each contain 4 great big dirty lead weights for balancing when flying, i have 4x boxes which i never fly so i may consider removing the 16x weights at some point in the future. They use: Martin DLS 1050 = PHL 1050 (16 ohm, although in my cabs i had found a mixture of 8 and 16 ohm) Martin DCD 016 = B&C DE 16-8 (8 ohm) The compression drivers had different sound levels to them, i removed the diaphragms and found they had aluminium oxide dust which was stuck in the air gap of the magnet. I removed the dust with some stiff cardboard and cleaned up the voice coils a bit and now they sound balanced. I broke one diaphragm as they can be quite tricky to remove, they can get a bit stuck down, take care and use a thin blade to get right under and ease up the thin metallic ring that is glued to the plastic ring by lifting both the metallic and plastic ring away from the magnet at the same time. separate the diaphragm carefully and evenly as you lift it from the magnet. The W8CT also have crossovers in the form of a MKP 6uF 400V capacitor and a large 10 Ohm resistor in series with each compression driver. I had been expecting the drivers to be 16ohm but i'm guessing that 8 ohm drivers with the 10 Ohm resistors worked out to be a better balance for the system whilst maintaining the ability to put many in parallel without stressing the amplifiers. I was wondering if i might be able to remove the capacitors and run them fully active but for the 10 ohm resistors but for now i'm leaving them there. I will also leave the W8CM standard for now but might consider using similar 12" drivers to the ones that i put in the W8C's The W8C's have now been fitted with RCF L12-750's (8ohm) and B&C 6MBX44-16 (16 ohm). The compression drivers are still the Martin DCD-025 = B&C DE25. There were some mods necessary to fit the new B&C 6.5" mids such as modifying the phase bung and removing a few cm of wood from the cab behind the magnet. Also i decided not to glue the plastic backs on them as they have a larger excursion if i so wish to play around a bit and see if it's worth extending the frequency down a bit lower on the DSP. For now they are just running with the standard settings. The newer mid bass drivers are more forgiving and have more headroom so you can get them thumping a little if you wish to push them a bit. I'll be listening to these a bit more over the coming weeks since i have them setup at home. I'm tempted to go fetch some bass bins but i'll probably leave the WSX in the lockup and fetch some old converted double 18" Peavey concert hall subs which now have some fane colossus drivers in them. I find these sound great in smaller venues, i usually put my Tannoy V 15's on top, but the W8C's could also sound nice atop the double 18 bass reflex cabs. The 4x WSX have also been modified with LF18X451. These are around twice the power handling than the originals with a much larger potential excursion. I had to flip the hatches as the backs of the handles were touching the magnets. I also removed around 3mm from the cutout with a fein saw as the membrane measured a few mm larger in diameter and with the extra excursion i didn't want to risk the membrane destroying itself on the cutout. If you have some old WSX and some large amps i would highly recommend this mod. I'm using the Lab Fp6400's to drive them. One amp is probably enough to drive all 4 but i usually use one to drive 2x WSX with 1800W nominal per side. The idea is to get 8x WSX so i can stack 4 per side laying on their sides mouth to mouth, eventually. So far, listening to the W8C's with the new drivers i must say that i'm very happy with the sound + i love the WSX with the newer drivers. I would love to get the 15" Mid bass cabs that go with the wavefront system but space and transportation limit the options a little however i sometimes use a double 15" Void W bin as a centre mounted kick sub. Can't remember if i included everything from the message i lost earlier but if you have any questions feel free to ask. |
|||||
Sound
|
|||||
Post Reply | Page <12 |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |