Search
 
 

Display results as :
 


Rechercher Advanced Search

Subscribe to our Feed
addtomyyahoo4 Subscribe with BloglinesAdd to netvibes
Add to Google

Passive X over project

View previous topic View next topic Go down

Passive X over project

Post by highcut28 on Sat Mar 03, 2012 2:24 pm

Hi All i am considering building a passive 3 way X over following a JBL model.

There are lots of components - especially coils which i anticipate will be tough to source locally, so will probably need to get from abroad.

Any body with any experience in this area?

Its a 3313 model X over that i intend to build.

highcut28
Regular
Regular

Number of posts : 98
Age : 56
Location : KL
Registration date : 2009-07-18

Back to top Go down

Re: Passive X over project

Post by mthoi on Tue Mar 06, 2012 2:26 pm

Hi Highcut,

I think most of the passive parts (caps, resistors) can be sourced locally - Octave Electronics have a good stock of values and brands. They are good people to deal with.

Inductors may be sourced from the net or custom locally. Partsconnexion.com, erse.com, parts express, farnell, rs, e-bay, etc. depending on your choice & budget.

My experience in building passive crossovers has been a mix-bag. After spending a fair sum on rebuilding a passive for my DIY Altec VOT speakers (different brands of caps - film, paper-in-oil, teflon; different resistors brands - dale, mundorf, mills; different coils - custom, erse), I finally settled on a DIY 2-way active crossover.

Of course, having a tri-amp would be an expensive alternative (additional amps, active crossover, cables, etc.), but I personally can't imagine myself going back to a passive crossover in my current set-up.

Maybe getting Wikin's help and/or advice? He is currently doing good work on a tri-amp active crossover.

mthoi
Frequent Contributor
Frequent Contributor

Number of posts : 240
Age : 54
Location : Petaling Jaya
Registration date : 2009-02-26

Character sheet
Source(s): Marantz SAKI Pearl, Michell Gyro, Garrard 401, Lenco L75, Technics SL1200II
Amplification: c3g/F2a + C3m/300b PP biamp, 26 Preamp, 76 Preamp + 2A3/845, c3o/300b, Quad 34/606
Speakers: Harbeth SHL5, Altec A7 288-8G/1505B VOTT + JBL 2404H, Tyler Acoustics + Altec 288/Jabo Horns

Back to top Go down

Re: Passive X over project

Post by bal on Tue Mar 06, 2012 3:00 pm

I'd second Mthoi's suggestion. Most of my DIY, i source components from Yap or Helen at Octave. They are very nice people to deal with. Also, if they don't have what you want, they usually are very helpful to me to suggest other sources or order from the net for me if i am too lazy to order myself.

Any idea what specification caps or inductors you need?

Bal.

bal
Moderator
Moderator

Number of posts : 1022
Age : 54
Location : Bangsar, medan damansara area
Registration date : 2009-03-06

Character sheet
Source(s): CEC T2, Oppo blu ray, mac mini running Audirvana thro Teac ud 501 dac
Amplification: conrad Johnson, Oddessy Khartago mono b
Speakers: maggie 1.7

Back to top Go down

Re: Passive X over project

Post by highcut28 on Tue Mar 06, 2012 3:24 pm

Thanks Bal and mthoi for yr thoughts, i am much obliged
Perhaps i can get parts locally after all:)
Ideas still fluid at the moment - it will either be the 3133 (L300) or the LX6A plus the N8000 (converts to 3 way) but whatever i settle with it'll be a passive over .

I will talk to them at Octave

highcut28
Regular
Regular

Number of posts : 98
Age : 56
Location : KL
Registration date : 2009-07-18

Back to top Go down

Re: Passive X over project

Post by highcut28 on Sun Jun 24, 2012 7:02 am

https://plus.google.com/photos/101575652324134556914/albums/5757369404287687521#photos/101575652324134556914/albums/5757369404287687521

Thanks guys
I got a bunch of caps and inductors from Octave
They were v helpful
Expnsf parts from Mundorf mainly
Hope its all worth it.
Cabs being modded now....

highcut28
Regular
Regular

Number of posts : 98
Age : 56
Location : KL
Registration date : 2009-07-18

Back to top Go down

Re: Passive X over project

Post by jat on Sun Jun 24, 2012 10:47 am

highcut28 wrote:https://plus.google.com/photos/101575652324134556914/albums/5757369404287687521#photos/101575652324134556914/albums/5757369404287687521

Thanks guys
I got a bunch of caps and inductors from Octave
They were v helpful
Expnsf parts from Mundorf mainly
Hope its all worth it.
Cabs being modded now....
i got a forbidden error for the link. maybe you should upload them to an image hosting service like imgserv.
avatar
jat
Frequent Contributor
Frequent Contributor

Number of posts : 113
Age : 37
Location : malaysia
Registration date : 2009-03-15

Character sheet
Source(s):
Amplification:
Speakers:

Back to top Go down

x over

Post by highcut28 on Mon Jun 25, 2012 6:31 pm


highcut28
Regular
Regular

Number of posts : 98
Age : 56
Location : KL
Registration date : 2009-07-18

Back to top Go down

Re: Passive X over project

Post by boonchang on Tue Jul 24, 2012 1:25 am

Hi

For xover mod, do observe the capacitor polarity, it does influence the sound.

Refer to the link,

http://jimmyauw.com/2010/04/24/observing-inner-and-outer-foil-of-some-popular-capacitors/

Cheers

boonchang
Club Member
Club Member

Number of posts : 27
Age : 46
Location : Subang Jaya
Registration date : 2009-03-07

Back to top Go down

Re: Passive X over project

Post by highcut28 on Tue Jul 24, 2012 10:41 am

boonchang wrote:Hi

For xover mod, do observe the capacitor polarity, it does influence the sound.

Refer to the link,

http://jimmyauw.com/2010/04/24/observing-inner-and-outer-foil-of-some-popular-capacitors/

Cheers

Oh thanks for that
The guys in Octave marked the directionality for me.

highcut28
Regular
Regular

Number of posts : 98
Age : 56
Location : KL
Registration date : 2009-07-18

Back to top Go down

Re: Passive X over project

Post by adcomer on Sat May 25, 2013 6:04 pm

If u are interested in xover design, then u should get an analogue active xover first. The reason is that with the mention device, u can change the xover cut off frequency easily and find the optimum setting for your JBL. After that u can design your own passive xover. U can google a lot of stuff especially in DIY website, they have all the tools in designing xover. From xover orders, type and even components to use.



adcomer
Frequent Contributor
Frequent Contributor

Number of posts : 101
Age : 46
Location : Kuantan
Registration date : 2011-06-23

Back to top Go down

Re: Passive X over project

Post by adcomer on Sat May 25, 2013 6:06 pm

For capasitors and inductors u can buy them from USA either from Madisound or part express.

adcomer
Frequent Contributor
Frequent Contributor

Number of posts : 101
Age : 46
Location : Kuantan
Registration date : 2011-06-23

Back to top Go down

Re: Passive X over project

Post by highcut28 on Tue May 28, 2013 12:09 pm

Thanks Adcomer
I got all the stuff from Octave and made up the X overs. Works nicely

Just need someone to make me cabs now.
Does anyone know someone that can make me cabinets based on the JBL 4333 ?

highcut28
Regular
Regular

Number of posts : 98
Age : 56
Location : KL
Registration date : 2009-07-18

Back to top Go down

Need speaker cabinet maker

Post by highcut28 on Sun Jun 09, 2013 5:54 pm

Hi
Me changing the Title cause i made my X overs but now need cabs.
Can anyone out there help me or put me in touch with someone who can build me cabs based on the JBL 4333?
I have some plans.
Getting pretty frustrated !



highcut28
Regular
Regular

Number of posts : 98
Age : 56
Location : KL
Registration date : 2009-07-18

Back to top Go down

Re: Passive X over project

Post by vt4c on Sun Jun 09, 2013 9:26 pm

highcut28 wrote:Hi
Me changing the Title cause i made my X overs but now need cabs.
Can anyone out there help me or put me in touch with someone who can build me cabs based on the JBL 4333?
I have some plans.
Getting pretty frustrated !



Write to this gentlemen - vmps_voon@yahoo.com. He might be able to help you.
avatar
vt4c
Frequent Contributor
Frequent Contributor

Number of posts : 131
Age : 48
Location : M'sia
Registration date : 2009-05-09

Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum