Shooting for 40hz depending on how hard I can out the passive radiators, should be doable.
Coming together
Recessed the binding posts, this is something I've been doing on most of my builds
And always the best part, seeing that grain pop!
Mid enclosure is lined with 1/2" wool and stuffed loosely with cotton
Mounting drivers and wiring
Ready for some crossover tuning
Once I'm done tuning them I'll do a spray on clear.
Thanks!
Javad
Recessed the binding posts, this is something I've been doing on most of my builds
And always the best part, seeing that grain pop!
An externally hosted image should be here but it was not working when we last tested it.
Mid enclosure is lined with 1/2" wool and stuffed loosely with cotton
Mounting drivers and wiring
Ready for some crossover tuning
Once I'm done tuning them I'll do a spray on clear.
Thanks!
Javad
You bet been working on them, using Xsim and Omnimic, xo around 300hz with a component to tame the top end of the PS95.
See here for a quick mid tune demo, sounds quite accurate with some good headphones
Ok done with the finishing process and I'm quite happy with the gloss finish, the grain in Mahogany is very deep and distinct and it's showing through as well, I didn't use any grain filler.
I'm still finalizing the XO, waiting for some components to show up, and I should have them buttoned up by the end of the week.
Drivers installed
Thanks!
Javad
I'm still finalizing the XO, waiting for some components to show up, and I should have them buttoned up by the end of the week.
Drivers installed
Thanks!
Javad
Thanks! I do have many measurements, waiting on some components to finalize the XO, will post in the near future.
Here is the PR with no weight, about 64hz, causes a large boost in bass response
After adding 30g of lead, I have some 40g coming too which I'll experiment with, 46.5hz
And the difference in response nearfield, approx 5db drop between 65-95hz
I'm shooting for flat to 40hz and some more weight should get it to the low 40's fs
After adding 30g of lead, I have some 40g coming too which I'll experiment with, 46.5hz
And the difference in response nearfield, approx 5db drop between 65-95hz
I'm shooting for flat to 40hz and some more weight should get it to the low 40's fs
Little more assembly detail
For some strange reason TangBand put screw provisions for #6 on these meaty little subs, just not enough holding power, so I drilled out the frames to allow a #10 screw
In case you were curious, here is how the woofer goes into the enclosure
I've found Loctite construction adhesive works really well for sealing holes and wires like this, it bonds really well to plastic unlike silicone sealant
Binding posts installed, I'll also be mounting XO components to the back cover
3M Rubber feet installed. One thing to note, the dual opposed passive radiators are very stable, this speaker doesn't move even at full excursion, with one PR however it would walk badly. In my experience, dual opposed PR are a must in small speakers like this.
Thanks!
Javad
For some strange reason TangBand put screw provisions for #6 on these meaty little subs, just not enough holding power, so I drilled out the frames to allow a #10 screw
In case you were curious, here is how the woofer goes into the enclosure
I've found Loctite construction adhesive works really well for sealing holes and wires like this, it bonds really well to plastic unlike silicone sealant
Binding posts installed, I'll also be mounting XO components to the back cover
3M Rubber feet installed. One thing to note, the dual opposed passive radiators are very stable, this speaker doesn't move even at full excursion, with one PR however it would walk badly. In my experience, dual opposed PR are a must in small speakers like this.
Thanks!
Javad
Been a while for an update! Been busy and had a business trip, but back to work and these are almost done.
Little stuffing in the lower chamber to help with higher freq reflections
XO components are attached directly to the removable back, I stapled T45 zip ties down which worked well.
Back installed and doing some final test sweeps to ensure everything went back together
Little hot glue to further secure components
Will post measurements and XO schematic soon, thanks!
Javad
Little stuffing in the lower chamber to help with higher freq reflections
XO components are attached directly to the removable back, I stapled T45 zip ties down which worked well.
Back installed and doing some final test sweeps to ensure everything went back together
Little hot glue to further secure components
Will post measurements and XO schematic soon, thanks!
Javad
Alight these babies are a wrap!
They sound similar to V1 but a few marked improvements:
1- larger volume allows deeper extension and smoother response w/o as much of a peak in response
2- these passive radiators are superior, they have absolutely no excursion issues (compared to the Peerless 5") and have no trouble taking 30g of weight to drop the resonant frequency to lower than V1. They can max out an Adcom GFA-545, it starts clipping and these are nowhere near finished, they easily hit 95db at 1 meter in room down to 50hz. They're not efficient, probably about 78db 1 watt on a good day but they can easily take the output of a 200 watt amp.
3- I ended up with a totally different crossover in this version, in V1 I ran the PS95 down to about 250hz, I went with something more along the lines of 900hz with V2. I also left the top end of the PS95 untouched which leaves the rise in FR above 6k. Overall they sound more detailed and lively and w/o any sssibilance, the V1 I would listen to on axis, V2 can be run with no toe-in and they have great off axis response too. High pass on the woofer is 18db and on the mid is 12.
(Thanks to Jeff Bagby for taking a look at my sim and making a suggestion)
The dip at 1k is in the PS95 in box response
4- V2 are bigger but still don't have a lot more physical presence, they're still tiny speakers and their bass performance totally belies their size, you really don't need a subwoofer with these.
They image very well, the coherence of the PS95-8 is excellent. They'll never have the warm and present sound of a good tweeter/mid combo but they sound really good for what they are. I'm definitely not a full range guy but the PS95 is a really nice sounding little driver.
I did a little better job finishing these, every seam is flush and perfectly flat, there aren't many flaws in this build, and I love working with this wood. The gloss finish is nice too.
Thanks for following along, happy to hear any comments, if you're interested in building these or a version of these please let me know,
thanks!
Javad
They sound similar to V1 but a few marked improvements:
1- larger volume allows deeper extension and smoother response w/o as much of a peak in response
2- these passive radiators are superior, they have absolutely no excursion issues (compared to the Peerless 5") and have no trouble taking 30g of weight to drop the resonant frequency to lower than V1. They can max out an Adcom GFA-545, it starts clipping and these are nowhere near finished, they easily hit 95db at 1 meter in room down to 50hz. They're not efficient, probably about 78db 1 watt on a good day but they can easily take the output of a 200 watt amp.
3- I ended up with a totally different crossover in this version, in V1 I ran the PS95 down to about 250hz, I went with something more along the lines of 900hz with V2. I also left the top end of the PS95 untouched which leaves the rise in FR above 6k. Overall they sound more detailed and lively and w/o any sssibilance, the V1 I would listen to on axis, V2 can be run with no toe-in and they have great off axis response too. High pass on the woofer is 18db and on the mid is 12.
(Thanks to Jeff Bagby for taking a look at my sim and making a suggestion)
The dip at 1k is in the PS95 in box response
4- V2 are bigger but still don't have a lot more physical presence, they're still tiny speakers and their bass performance totally belies their size, you really don't need a subwoofer with these.
They image very well, the coherence of the PS95-8 is excellent. They'll never have the warm and present sound of a good tweeter/mid combo but they sound really good for what they are. I'm definitely not a full range guy but the PS95 is a really nice sounding little driver.
I did a little better job finishing these, every seam is flush and perfectly flat, there aren't many flaws in this build, and I love working with this wood. The gloss finish is nice too.
Thanks for following along, happy to hear any comments, if you're interested in building these or a version of these please let me know,
thanks!
Javad
Why? I measured it inside and outside and the FR is identical, all inductors are 90d to the magnetic field, by keeping the XO inside it creates a very compact and tidy package, just connect 2 wires.
Thanks!
Javad
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.