Re: Passive Crossover Equalizer for HLCD Stevens Audio
Take the HLCD, a bunch of capacitors and RTA. Start changing the cap value (from small to large) until the upper frequencies become flat with a nice roll-off on the lower band. Voila, you created the EQ.
You should run the measurements on single horn, no mids and not in stereo. Preferrably - in the car, placed where you'd like to use them.
Re: Passive Crossover Equalizer for HLCD Stevens Audio
Quote:
Originally Posted by S3T
Take the HLCD, a bunch of capacitors and RTA. Start changing the cap value (from small to large) until the upper frequencies become flat with a nice roll-off on the lower band. Voila, you created the EQ.
You should run the measurements on single horn, no mids and not in stereo. Preferrably - in the car, placed where you'd like to use them.
Thanks of your input , I try your way to make horn eq and the result is
The top curve is without cap below it is 22 uf, 15 uf, 10 uf , 8.2 uf , 6.8 uf, 4.7 uf , 3.3 uf , 2.2 uf, 1.5 uf , 1 uf.
Ok then here is the 4.7 uf , 3,3 uf and passive eq
The green line is passive eq and the top line is 4.7 uf , below it is 3.3 uf .
The use of 3.3 and 4.7 had more level from 1.5k to 16 k than passive eq about 3 db plus , 3.3 uf is more close but lower
frek (1.5k down ) have less level
Next graph is :
Top line is without cap or passive eq, green line is 4.7uf , grey line is passive eq
Now look at the horn impedance
The yellow one is impedance with 4.7 uf the green line is horn impedance.
Next pic is horn impedance with phase eq and 4.7 uf cap
Re: Passive Crossover Equalizer for HLCD Stevens Audio
I already listened to the Steven Audio Ultra HLCD at HOME with passive phase equalizer and it was amazing experience IMHO. The speaker itself seems dissapeared! sound almost like real music! Smooth response, good linearity and full bodied. I want to replicate this sound in my CAR. I'm very curious for the result, It's time to experiment furthermore!
Re: Passive Crossover Equalizer for HLCD Stevens Audio
By the way the system at home belong to my best friend Handy in Bandung. It is minimalist system with only 2 way system (HLCD + Ramm Acoustic Midbass 6") drive by internal power of Alpine 9887. No external poweramplifier and no signal processing.
The CD is Telarc 1812 Overture, Sheffield Chrismast Song and AYA. For the reference we compare it with Lowther Fullrange in horn reflex enclosure. The room itself is 4x6 meter.
Re: Passive Crossover Equalizer for HLCD Stevens Audio
Quote:
Originally Posted by asawendo
I already listened to the Steven Audio Ultra HLCD at HOME with passive phase equalizer and it was amazing experience IMHO. The speaker itself seems dissapeared! sound almost like real music! Smooth response, good linearity and full bodied. I want to replicate this sound in my CAR. I'm very curious for the result, It's time to experiment furthermore!
Best Regards
Wendo
how was it set up in ur house? what did you use to duplicate ur cars dash?
HU P01
Tru SB6 running ES ultra full body and (2) jbl w12gti
Tru S25 runing Mids 4 Silver Flute W17RC38-08
Re: Passive Crossover Equalizer for HLCD Stevens Audio
Quote:
Originally Posted by asawendo
By the way the system at home belong to my best friend Handy in Bandung. It is minimalist system with only 2 way system (HLCD + Ramm Acoustic Midbass 6") drive by internal power of Alpine 9887. No external poweramplifier and no signal processing.
The CD is Telarc 1812 Overture, Sheffield Chrismast Song and AYA. For the reference we compare it with Lowther Fullrange in horn reflex enclosure. The room itself is 4x6 meter.
The result is mind blowing!
Thank you LeonAudio and Asawendo for your positive comments.
I had read your passive EQ setup and wanted to actually test something before responding to provide some added input.
I have done similar EQ previously but used an inductor in parallel with the driver. I was crossing over higher and blending in with the natural roll of the midbass driver however. The series capacitor value was .5 uf with a parallel inductor 6.8 mh. Gauge of the inductors wire is unimportant as there is low current flow so you just use a very small magnet wire on a fairly small bobbin.
Last picture, show Mr. Asawendo in front of the system, wearing our national pride of "Batik Indonesia".
He is a audio reviewer & an audio expert on many audio magazines in Indonesia.
Re: Passive Crossover Equalizer for HLCD Stevens Audio
Dear Mr. Eric,
I will send a set of passive EQ that Mr. Handy has made for this Stevens Audio HLCD.
Thank you.
Quote:
Originally Posted by Eric Stevens
Thank you LeonAudio and Asawendo for your positive comments.
I had read your passive EQ setup and wanted to actually test something before responding to provide some added input.
I have done similar EQ previously but used an inductor in parallel with the driver. I was crossing over higher and blending in with the natural roll of the midbass driver however. The series capacitor value was .5 uf with a parallel inductor 6.8 mh. Gauge of the inductors wire is unimportant as there is low current flow so you just use a very small magnet wire on a fairly small bobbin.
Re: Passive Crossover Equalizer for HLCD Stevens Audio
There are many things in this thread that I like the look of!
The Horn bodies, the dueland caps and the fact the Eric is involved!! Eric I'm using your large bodies in a Porsche 914 atm with B&C DE250 drivers what are these new bodies I see before me??
Mcintosh MX5000, USD processing, 3 x SS Class A's, KEF point source and a Velodyne. Old school..
Re: Passive Crossover Equalizer for HLCD Stevens Audio
Quote:
Originally Posted by roduk
There are many things in this thread that I like the look of!
The Horn bodies, the dueland caps and the fact the Eric is involved!! Eric I'm using your large bodies in a Porsche 914 atm with B&C DE250 drivers what are these new bodies I see before me??
Re: Passive Crossover Equalizer for HLCD Stevens Audio
Quote:
Originally Posted by Eric Stevens
No dash is necessary for the horns to work well.
Eric
Agh, I hate to be a dick, but that statement is only true when the horn mouth is large enough. For a 1khz xover point, we're talking a mouth with an area of 855cm^2, or about the size of a 15" subwoofer!
Otherwise, you need a serious baffle, or at least a serious roundover.
This is why home horns look like this:
Otherwise, cool stuff! Good to see your selling horns again.
In my 25 years of working in this industry, I've listened to thousands of cars and I can count the ones that sounded great on two hands. Most of them have serious problems and some of the worst ones are IASCA winners... 50% of these guys have plans to change all the equipment in their cars because they don't sound good. In every case so far, none of the equipment has been the cause of poor performance. In every case, it's the installation, the adjustments or the system design. AW
Re: Passive Crossover Equalizer for HLCD Stevens Audio
Quote:
Originally Posted by Patrick Bateman
Agh, I hate to be a dick, but that statement is only true when the horn mouth is large enough. For a 1khz xover point, we're talking a mouth with an area of 855cm^2, or about the size of a 15" subwoofer!
Otherwise, cool stuff! Good to see your selling horns again.
Patrick,
Go ahead somebody has too
It all depends on how you want to set up the system. All that's really necessary is 1/8th mouth size for near field application. I prefer 1/4 as a minimum but you can get by with less.
Remember flare rate and flare type greatly affect the loading also.
My full size horn offers loading to well below 1000 Hz with a mouth of 245cm2 or 37.5 sq in without a dash or other sort treatment.
Re: Passive Crossover Equalizer for HLCD Stevens Audio
Are you going to be designing some new horns Eric? I currently run your large bodies and would love to try the new generation of 2" concentric compression drivers in car? Any products in the pipeline??
Mcintosh MX5000, USD processing, 3 x SS Class A's, KEF point source and a Velodyne. Old school..
Passive Crossover Equalizer for HLCD Stevens Audio
Linear Mode
