Funnily enough, I did exactly the same thing - bought a pre made 'subwoofer' angle box and fitted everything inside that (got an angled box so I could use them for surrounds if I wanted, but I don;t think Ill have the room for them now). Sounds quite nice, and I'm going to also try them in a normal 10" speaker box with Pyle PH612 constant directivity waveguide just to see what the difference is between them - I have REW and a Umik1 mic so I'll try to get some measurements and see how they compare. May be a few weeks before I get round to doing that though.
Gary
I just connected the crossover and played it where it is ( near the middle of the room).
It sounds sharper than my current speaker ( Mission 701) and vocals are very clear though without much low end it is out of balance . However I'm surprised at the amount of bass I can still hear. Have to now do the eq after some measurements. I think it will turn out very well.
It sounds sharper than my current speaker ( Mission 701) and vocals are very clear though without much low end it is out of balance . However I'm surprised at the amount of bass I can still hear. Have to now do the eq after some measurements. I think it will turn out very well.
I've been running the CX10's since yesterday.The driver seems to be quite smooth on this baffle. Some single cone full range drivers tend to shout and need to be tamed. This of course is a 2 way , but it sounds nice AND it is very sensitive. It sounds surprisingly nice without any eq.
I think the voice on my older normal speakers is a bit smoother . The CX10 might be a bit more forward due to the LF roll off on the OB. I think it will sound smoother when it is equalised. HF sounds just great. Tremendous attack on percussion. More LF ( after eq) will tend to dull that. Will check it out with eq later on. I find very sensitive speakers often just sound better ! Not quite sure why that is so. Might be because they work well ( and loud) at very low input levels. Makes it so much easier for the amp to handle. Back emf must be higher too....but does that have any part to play in this ?
Any other guys completing their OB with the CX-10's ? I'm thinking of getting a couple of CX-12's to compare them by.Apart from measured differences , how does the CX-12 sound compared to the CX-10 ? Any FR plots of CX10 and CX12 with ASD1001 and stock crossover ?
I think the voice on my older normal speakers is a bit smoother . The CX10 might be a bit more forward due to the LF roll off on the OB. I think it will sound smoother when it is equalised. HF sounds just great. Tremendous attack on percussion. More LF ( after eq) will tend to dull that. Will check it out with eq later on. I find very sensitive speakers often just sound better ! Not quite sure why that is so. Might be because they work well ( and loud) at very low input levels. Makes it so much easier for the amp to handle. Back emf must be higher too....but does that have any part to play in this ?
Any other guys completing their OB with the CX-10's ? I'm thinking of getting a couple of CX-12's to compare them by.Apart from measured differences , how does the CX-12 sound compared to the CX-10 ? Any FR plots of CX10 and CX12 with ASD1001 and stock crossover ?
I never received the Eminence XO's to play with due to travel and other issues. However, I did have a custom XO developed for the Eminence Beta 10CX + Eminence PSD2013-8 compression driver.😀
I am slowly working on the enclosures, health issues have made the build go sloooooooooow (aging sucks, but the alternative is worse).
Attachments
Another interesting observation. I used an Eminence Beta8 with APT50 on one OB panel ( like an inverted V ) and a CX-10 with ASD1001 on it on another panel 34 cm wide and rounded off around the upper half of the driver.
The CX-10 has obviously more LF content and sounds a bit brighter and taut.
However the Beta8/APT50 less so but sounds 'open' . The CX-10 sounds like a defined source. You know it's coming from the driver. The Beta8 doesn't feel that way.
Crudest way I can explain this is the CX-10 sounds like it's coming from a small 'pipe' ! The Beta 8 doesn't seem to be 'restricted' like this !
Same crossover and same location. This needs some experimentation. Wonder if the problem is the CX-10 cone or it's horn or the baffle ? Sounds more like a horn issue ! Anyone noticed this before ?
I'll use a separate horn outside the CX-10 and see what it sounds like.
The CX-10 has obviously more LF content and sounds a bit brighter and taut.
However the Beta8/APT50 less so but sounds 'open' . The CX-10 sounds like a defined source. You know it's coming from the driver. The Beta8 doesn't feel that way.
Crudest way I can explain this is the CX-10 sounds like it's coming from a small 'pipe' ! The Beta 8 doesn't seem to be 'restricted' like this !
Same crossover and same location. This needs some experimentation. Wonder if the problem is the CX-10 cone or it's horn or the baffle ? Sounds more like a horn issue ! Anyone noticed this before ?
I'll use a separate horn outside the CX-10 and see what it sounds like.
I noticed that as well using a selenium d220. There was an issues around 6k that was not fixable with eq. Others don't seem to have that problem. Who knows.
I was extremely impatient and decided to try out a quick experiment. I disconnected the tweeter and played only the main driver. Beta8 and CX-10. When I do this the CX-10 doesn't have that odd mild cuppy sound. Both drivers sound similar. I hear some extra 'bite' in transient sounds on the CX-10 compared to the Beta8.
I really need to run some FR tests. Bit of a problem at the moment . Hope I can get it done by this weekend. Will try out the CX-10 with the external tweeter soon.
Can someone give some feedback about the other 10 inch coax drivers around ( Beyma ?). The Beyma appears to have a full horn and doesn't use the cone as an extended horn. Might not have this problem. I heard a Tannoy monitor gold recently. Wasn't quite what I thought it should sound like. Wonder if all coaxial drivers that use the cone as a horn extension have this problem.
I really need to run some FR tests. Bit of a problem at the moment . Hope I can get it done by this weekend. Will try out the CX-10 with the external tweeter soon.
Can someone give some feedback about the other 10 inch coax drivers around ( Beyma ?). The Beyma appears to have a full horn and doesn't use the cone as an extended horn. Might not have this problem. I heard a Tannoy monitor gold recently. Wasn't quite what I thought it should sound like. Wonder if all coaxial drivers that use the cone as a horn extension have this problem.
Last edited:
Kind of related to the 10Cx is its little brother the 8CX (which I believe has the same motor, just smaller cone and costs the same). I used the Beta 8cx (with PRV D280Ti) to build the XKi 6th order series bandpass with Karlson aperture speaker which is very compact and has uniform polar response.
This is my 10CX with ASD1001 using the 2.5k Eminence off the shelf crossover in a sealed car subwoofer box (I think around 0.75 cf). It was measured in my lounge and is crossed by the AV amp at 80hz (was the easiest way to power and measure it), so you can ignore everything below around 200hz. I used 1/6th smoothing.
For off the shelf stuff it doesn't look too bad I guess.
Gary
For off the shelf stuff it doesn't look too bad I guess.
Gary
Attachments
hi Gary - that looks pretty good - the values on that xover IIRC are 2mH/10uF lowpass, 3.3uF, 0.35mH highpass. How much high frequency padding are you running? (for those who like to experiment, two 6.8uF caps in series with battery biasing can be used to examine charge-coupled networks)
Hi Freddi,
It's the stock generic PXB2-2K5CX crossover:
Crossover Detail | Eminence Speaker
The schematic contains all the values, including the resistors which I think are 3 ohm and 20 ohm:
http://www.eminence.com/pdf/Eminence_DIY_Home_Hi-Fi.pdf
It's a one crossover fits all that can be used for the 8, 10 and 12CX with all of their CDs, so room for improvement.
What I might try sometimes is having the CD external in a waveguide to see what it measures like compared to inside the 10CX.
HTH
Gary.
It's the stock generic PXB2-2K5CX crossover:
Crossover Detail | Eminence Speaker
The schematic contains all the values, including the resistors which I think are 3 ohm and 20 ohm:
http://www.eminence.com/pdf/Eminence_DIY_Home_Hi-Fi.pdf
It's a one crossover fits all that can be used for the 8, 10 and 12CX with all of their CDs, so room for improvement.
What I might try sometimes is having the CD external in a waveguide to see what it measures like compared to inside the 10CX.
HTH
Gary.
Last edited:
Picture of XO:
Measurements of the 10CX + PSD2013-8 w/custom XO:
1) 0-90 degrees off axis, 10 degree increments
2) Average from 0 - 30 degrees
3) Response and phase at 20 degrees
***Measurements and XO designed by mtg90 at AVSForum
Measurements of the 10CX + PSD2013-8 w/custom XO:
1) 0-90 degrees off axis, 10 degree increments
2) Average from 0 - 30 degrees
3) Response and phase at 20 degrees
***Measurements and XO designed by mtg90 at AVSForum
Attachments
Last edited:
I measured the electrical signals at the driver terminals when using the stock crossover with the CX10 and ASD1001.
Very odd response at the CX10 terminals. I never measured the acoustic response so I cannot comment on it right now. Tweeter is padded down quite a lot.
PLENTY of work ahead ! 🙂
Will try to get the acoustic measurements.
Very odd response at the CX10 terminals. I never measured the acoustic response so I cannot comment on it right now. Tweeter is padded down quite a lot.
PLENTY of work ahead ! 🙂
Will try to get the acoustic measurements.
Last edited:
Off the Shelf Xover
That looks very nice. Have you measured with the tweeter inverted?
Funny you should say that - I did think I should have done that after Id put everything away. Maybe I'll dig it out and try it both ways sometime soon(ish).
Gary.
Gary.
I resemble that remark!
I'm looking forward to how your super high aspect ratio vent measures Vs a sim as Altec's A-8 speaker's 1" x 12" slot is way more damped than predicted: http://www.lansingheritage.org/images/altec/catalogs/1966-vott/page4.jpg
GM
Member
Joined 2009
Paid Member
Has anybody had a chance to compare the Eminence coaxials with Audio Nirvana coaxials - there's a big price differece, in favour of the Eminence.
- Status
- Not open for further replies.