I can increase the woofer level easily as Hypex has gain control on it, i will try that, but it probably will be across the entire bass range?
Meanwhile, measuring mid only is beyond my expertise, do i disconnect the other drivers, and is the amp happy with that (sensitive tube thing?) many thanks, mike
I would try a mix of these two. I have heard system with a mid and tweeter in open baffle (or fullrange), and everything below 200Hz was a small sealed enclosure with two tiny woofers. And it sounded TERRIFIC!
If you will have the crossover poit this low, the closed bass will not affect the openness of the higher spectrum. Everything above 200 was open baffle.
Hi MikyK, i decided to experiment with something like you suggested to see if i liked it, you will see the thread goes on, so i have the bass part from my Fusion with Hypex DSP below 200hz and the mid, crossover and tweeter out on an open baffle next to it. there is a pic in the thread here.
I think i like the OB sound feeling the mid and treble i am hearing some more detail, its more airy sound and the imaging is stable a bit more round the room. however because i am depending on all existing kit and settings there are EQ problems which I've tried to solve various ways. i suspect i will go back to the Fusion as is, maybe one day build OB for another room, but i am trying to learn some more without spending out, hence still experimenting!
Hi there, i did the easy one here, mid back on its crossover, bass and OB back in line, normal flat and two increased bass levels, clip attached..........
I remain interested to experience a bit more about OB, but unless i can learn how to configure the bass filter in Hypex to take it up to say 300 i feel i am at the limit of the experiment with existing parts only? - even that will leave the mid peak, but would be a bit more
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Yes it will be across the entire bass range with a simple level control. More bass is almost always preferable to not enough.
By programming the Hypex you could change the woofer EQ to shape that more but without an ability to EQ the Mid directly I think you are getting towards the end of your options with this as it stands. The dipole peak could be handled in a basic way by using EQ in a media player the dipole roll off would be less successful.
If you had the Fusion active your options would be greater but the single channel amp is more limited.
Try the middle level trace with the woofer moved to the best time aligned position or inverted.
If you can add some EQ to the source and get into the Filter Design software you could add the delay electronically and change the crossover and EQ to get a flatter response.
It will still end up as a bit of kludge though.
If you can add some EQ to the source and get into the Filter Design software you could add the delay electronically and change the crossover and EQ to get a flatter response.
It will still end up as a bit of kludge though.
I looked up kludge, it is a workaround or quick-and-dirty solution that is clumsy, inelegant, inefficient, difficult to extend and hard to maintain. A perfect use of the word, i am not aware of its use over here, but i shall import it!
i agree, my work makes Heath Robinson look professional.
I will try the kludge later ! thanks mike
Glad you like the word 🙂
I didn't mean to suggest that your efforts were sub par, more that you are trying to do something difficult with a limited set of tools 😉
Your options will open up a little bit if you can get into the Hypex DSP, even more if you had two channels of DSP per speaker.
I didn't mean to suggest that your efforts were sub par, more that you are trying to do something difficult with a limited set of tools 😉
Your options will open up a little bit if you can get into the Hypex DSP, even more if you had two channels of DSP per speaker.
You could try a larger baffle for the midrange, it won't be such a good dipole but it will still be an open baffle 🙂
Remember you can't boost much in a DSP. You have to lower the rest instead. Boosting too much really don't sound good. It's easily heard with a sine sweep. The lows sound funny with too much boost.
Kludge it is for now, very happy with that description for this! here it is attached with the bass lift and O.O. phase, not sure where the extra e came from, i will do some listening!
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Thanks for that info, i have used about 1/3 what's available and set the levels equal by the REW to match the mid peak with the bass peak, so i have as equal a setting i can easily get
As chief "cludger", can i just clamp a bit on each side.......or a couple of wings on the back? - any idea what sort of added length makes a difference please?
By the way, listening while i type, music i know well, some jazz, light guitar, baritone and vocals, there is a band about 3 feet wide where there is a good image, performers out there, bass is obviously more filled in now, a bit bloomy on plucked string bass now for example, mid and treble nicely open and airy, certainly an interesting experiment.
That depends entirely on the system being used and is not an absolute. But inappropriate use of DSP can certainly make things worse not better.
What Mike did here was turn the woofer amp up which is not the same thing as boosting at line level in a DSP.
You can do that or add some pieces to the sides to make more of a U shape. Both of those will change the path length difference from front to back, the wider front baffle will affect the response of the mid differently.
You have a couple of modes showing in your measurements which could be reduced a little with EQ and might help the bloom, taking the dipole peak out with some EQ ahead of your mid treble amp would likely make a worthwhile improvement.
What do you use as a source?
So continuing the Kludge, here is the winged version and three FR traces, before, after with wings, after with wings and reduced bass lift
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Source for best is vinyl, Origin live Aurora 4 with OL onyx and Rega Ania, ready listening PC with Foobar, FLAC files (hopefully bit perfect) to old chord gem DAC all to Prima Luna prologue 1 to high level input of Hypex for bass, PL does the mid/treble, i think there is some opportunity in Foobar?
Having read up a bit, i see i might use some EQ from Foobar for playback but i cannot play the REW signal through it as far as i can see, so wont be able to measure it....
Seems like an improvement that will make the EQing easier.
Yes with Foobar you could use EQ or VST plugins. I can't really help you there as I tried Foobar for a while and moved on as I didn't like it.
Another option is to download a free trial of Jriver Media centre and see if you like that. It has an awesome DSP engine built in and can use VST plugins, so the options are almost limitless. The cost of a licence is not that much considering the ability of the software. I find the volume levelling alone worth the price. I can help you with that software 🙂 I can probably help you to program the Hypex if you need it as well.