Need suggestions of midbass for Jordan JXR6? - Page 5

a333bt · 9th January 2007, 07:36 AM

Hi Binkt,

i think limit for fotos are 100kb.
So you need to resize them.

Or you can send me:

bkragl@yahoo.co.uk

regards, Bostjan

Colin · 9th January 2007, 10:40 AM

Not sure about needing 200Hz from the sub to match with the JX6. Mine go to around 120Hz and a bass unit with a passive filter of around 105Hz seemed to match ok. Admittedly it was a first order, so a lot of overlap. However for best power handling, bringing in the sub a little higher wouldn't harm.

binkt · 9th January 2007, 07:23 PM

Colin:
Do you roll off the JXR6 in your application?
I have been experimenting with some old EJJ system 5 low frequency units with 4 inch dalesford push pull drivers crossing over at 150 hz with some fine results. The vented enclosure has excellent low frequency response but cannot handle a lot of power.
They respond to over a kilohertz linearly and at low to average levels may be superior to my subs in the integration area.

I am still using my JXR6 arrays with out crossover other than the natural roll off below resonance and crossing over the VBI subs at 150 hz @ 18dB/octave but the subs are able to respond to 200 hz before they begin their hi freq roll off. They are really superb at the lowest frequency.

I am still searching for a really good answer to Norris Wilson's initial question in this thread.

Thanks for all the info in your posts

Colin · 10th January 2007, 09:48 AM

Hi

My JXR6s are in 2.2 litre sealed cabinets with no filtering, so the rolloff starts around 120Hz. The drivers are still producing sound at 80Hz, albeit much lower volume.

Interesting to hear you have the original Dalesford bass design. Those drivers were designed as alternatives to the KEF B110, I believe, so probably a little low on power handling by modern designs. I have a couple of Ted's own bass units awaiting use - I need ot get up to speed with electronic crossovers first.

Ref the original query - I believe Ted is looking at SEAS drivers as alternatives to his own units. He currently uses MJ Acoustic power subs in his own set up.

binkt · 10th January 2007, 06:37 PM

Colin
Thanks for the response. I actually have the entire EJJ system 5 and looked at the JXR6 effort as a potential upgrade for the original 50mm modules. As it turned out the JXR6 is much more than that and I have been forced to look to new technology to match the capabilities of the new transducer.
Perhaps an alignment could be generated using Seas or other available drivers to bring the push-pull mid/low frequency design to a match with the JXR6. I really like the low distortion and extention of that sort of small box . Isobaric alignment may also provide the size and quality desired.
This concept may be one acceptable answer to Mr. Wilson's inquiry as to a midbass for the Jordan JXR6.

Colin · 11th January 2007, 08:37 AM

The JX92 in GM's MLTL is a more than capable match for the Dalesford system, especially the 48" variant. You could use a pair per channel, albeit at some cost (though no more than using Jordan's own bass units when available).

The Mark Audio site (markaudio.com) used a similar idea in a design which I don't think has come to market yet. I can't find it onsite so here's a gif I downloaded some time ago.

deandob · 11th January 2007, 08:51 AM

I have experimented with the crossover for the JXR6 with subwoofer and found 120Hz is about optimal for my setup (near field monitors) as any higher and the subwoofer can be "located" and lower than it sounds hollow. My setup still sounds a little weak in the midbass so I have applied electronic equalisation (convolver) to increase the midbass.

I've been listening to these speakers for a couple of hours each day for the last 9 months and pretty happy with them especially their resolving power (and using a tripath amp). Ideally I think this speaker wants to be crossed over about 150hz - 200hz but would need stereo woofers not a mono subwoofer.

Regards,
Dean

Norris Wilson · 31st March 2007, 04:50 PM

Rudolph brought up an interesting Tang Band W4-657 SC bass design over at Fullrange driver forum that is mated to a Veravox 3.

It looks as if it could be incorporated with a Jordan JXR6, possibly as an active bi-amped system.

Any comments, suggestions?

http://fullrangedriver.com/forum/vie...d=13758#p13758

NW

11th January 2007, 08:51 AM	#47
deandob diyAudio Member Join Date: Oct 2002 Location: Brisbane, Australia	JXR6 crossover I have experimented with the crossover for the JXR6 with subwoofer and found 120Hz is about optimal for my setup (near field monitors) as any higher and the subwoofer can be "located" and lower than it sounds hollow. My setup still sounds a little weak in the midbass so I have applied electronic equalisation (convolver) to increase the midbass. I've been listening to these speakers for a couple of hours each day for the last 9 months and pretty happy with them especially their resolving power (and using a tripath amp). Ideally I think this speaker wants to be crossed over about 150hz - 200hz but would need stereo woofers not a mono subwoofer. Regards, Dean

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9th January 2007, 07:36 AM	#41
a333bt diyAudio Member Join Date: Jun 2004 Location: Vodice	Hi Binkt, i think limit for fotos are 100kb. So you need to resize them. Or you can send me: bkragl@yahoo.co.uk regards, Bostjan

9th January 2007, 10:40 AM	#42
Colin diyAudio Member Join Date: Aug 2003	Not sure about needing 200Hz from the sub to match with the JX6. Mine go to around 120Hz and a bass unit with a passive filter of around 105Hz seemed to match ok. Admittedly it was a first order, so a lot of overlap. However for best power handling, bringing in the sub a little higher wouldn't harm.

9th January 2007, 07:23 PM	#43
binkt diyAudio Member Join Date: Dec 2006	Colin: Do you roll off the JXR6 in your application? I have been experimenting with some old EJJ system 5 low frequency units with 4 inch dalesford push pull drivers crossing over at 150 hz with some fine results. The vented enclosure has excellent low frequency response but cannot handle a lot of power. They respond to over a kilohertz linearly and at low to average levels may be superior to my subs in the integration area. I am still using my JXR6 arrays with out crossover other than the natural roll off below resonance and crossing over the VBI subs at 150 hz @ 18dB/octave but the subs are able to respond to 200 hz before they begin their hi freq roll off. They are really superb at the lowest frequency. I am still searching for a really good answer to Norris Wilson's initial question in this thread. Thanks for all the info in your posts

10th January 2007, 09:48 AM	#44
Colin diyAudio Member Join Date: Aug 2003	Hi My JXR6s are in 2.2 litre sealed cabinets with no filtering, so the rolloff starts around 120Hz. The drivers are still producing sound at 80Hz, albeit much lower volume. Interesting to hear you have the original Dalesford bass design. Those drivers were designed as alternatives to the KEF B110, I believe, so probably a little low on power handling by modern designs. I have a couple of Ted's own bass units awaiting use - I need ot get up to speed with electronic crossovers first. Ref the original query - I believe Ted is looking at SEAS drivers as alternatives to his own units. He currently uses MJ Acoustic power subs in his own set up.

10th January 2007, 06:37 PM	#45
binkt diyAudio Member Join Date: Dec 2006	Colin Thanks for the response. I actually have the entire EJJ system 5 and looked at the JXR6 effort as a potential upgrade for the original 50mm modules. As it turned out the JXR6 is much more than that and I have been forced to look to new technology to match the capabilities of the new transducer. Perhaps an alignment could be generated using Seas or other available drivers to bring the push-pull mid/low frequency design to a match with the JXR6. I really like the low distortion and extention of that sort of small box . Isobaric alignment may also provide the size and quality desired. This concept may be one acceptable answer to Mr. Wilson's inquiry as to a midbass for the Jordan JXR6.

31st March 2007, 04:50 PM	#48
Norris Wilson diyAudio Member Join Date: Aug 2004	Rudolph brought up an interesting Tang Band W4-657 SC bass design over at Fullrange driver forum that is mated to a Veravox 3. It looks as if it could be incorporated with a Jordan JXR6, possibly as an active bi-amped system. Any comments, suggestions? http://fullrangedriver.com/forum/vie...d=13758#p13758 NW