Jump to content

ZXPC 18" x 10" Two Inch Format Horn


Recommended Posts

I bought a pair of these recently for my eventual LaScala rebuild. I know these horns have come up before in various threads, but I don't recall seeing any frequency response graphs of a K55V (push-pin) on the 18 x 10 horn. Perhaps one is buried in a thread somewhere, but here is a measurement that I made this morning.

 

Two items I wanted to know about the horn was the low-end response, which clearly goes down to 400Hz and how smooth the frequency response was across the midrange band. The 18 x 10 and K55V appear to be a great match. I'm not a horn expert, but the 18 x 10 looks to be an exponential horn.

 

I have not listened to them yet, but will try and patch together at least one channel to see how they sound. 

ZXPC 18x10 Horn with K55V.jpg

  • Like 2
Link to comment
Share on other sites

I've got the ZXPC 18 x 10 horns w/ K55v's on top of my LaScala's and they (k55V & horn) sound much more natural than the K400's. Typical audiophile adjectives that come to mind are  more open, less veiled, less colored, etc. 

 

I know there are other horns out there that could be used, but for the money and sound quality, this ZXPC horn is a bargain and worth trying if you are in the market for a 400Hz mid horn. It has a thick casting and is fairly non-resonant. 

 

I mounted a JBL D250X on the ZXPC horn too and it measured great and sounds good as well. 

ZXPC 18 x 10 2 inch Horn_1.png

ZXPC 18 x 10 2 inch Horn_2.png

  • Like 1
Link to comment
Share on other sites

9 minutes ago, Curious_George said:

I've got the ZXPC 18 x 10 horns w/ K55v's on top of my LaScala's and they (k55V & horn) sound much more natural than the K400's.

are these the K510 Clones  , can you show a picture of the Adaptors you are using with the K55V 

Link to comment
Share on other sites

I have a pair of the 10x18 horns with a EV DH1As on a cornscala bass bin with 15cs and custom made crossovers. Thanks for the mearsurements and info. I will have to try it with my K55V and K55Gs. The combo I have now sounds amazing to my ears.

 

 

 

  • Like 2
Link to comment
Share on other sites

2 minutes ago, rmlowz said:

I have a pair of the 10x18 horns with a EV DH1As on a cornscala bass bin with 15cs and custom made crossovers. Thanks for the mearsurements and info. I will have to try it with my K55V and K55Gs. The combo I have now sounds amazing to my ears.

 

 

 

 

It is a great combo. Glad your results are similar to mine. 

Link to comment
Share on other sites

16 minutes ago, 001 said:

are these the K510 Clones  , can you show a picture of the Adaptors you are using with the K55V 

 

No, these are not the K510 clones, but the larger "generic" horns; 18 x 10. That is how they are listed. The PRV adapter below is what I am using, but they are ABS (only) and fairly soft, which you would expect. I think I'll get some aluminum ones since the PRV threads are already starting to get "boogered" up. That's a North Carolina term... 

PRV 1 inch to 2 inch adapter.jpg

  • Like 2
Link to comment
Share on other sites

1 hour ago, Curious_George said:

the PRV threads are already starting to get "boogered" up. That's a North Carolina term... 

 

Cool enough , did you try using  3mil  teflon  tape on the metal threads prior to threading  onto  the softer ABS 

Link to comment
Share on other sites

19 hours ago, grendel23 said:

I am using these horns with BMS 4592ND drivers. I am running active with Quarter Pies and it sounds good. I am getting K-402 horns in a few weeks and will compare.

 

I am certain the K-402's will sound better, however, the cost difference is quite significant. 

  • Like 1
Link to comment
Share on other sites

I have this horn with a P-Audio BM-D450S.  The horn is very well constructed.

 

Measurements:

 

Horizontal...

 

758457559_Horizontal0-90degrees.png.3dfb51e934ec135067938f4da6c08c97.png

 

 

459997807_Horizontalpolar.jpg.49bc352f1b5e5bf1364d33b7e2a79bf7.jpg

 

 

 

Vertical:

 

877387977_Vertical0-90degrees.png.79f4098f2d91ae6836711005d702b56d.png

 

 

1512329623_Verticalpolar.jpg.caaf4b2b143936b4ad562e6cd7e86c6b.jpg

 

 

 

Distortion

 

 

330209959_Distortionfull.thumb.png.3e248994f338845a5685c1c063c530ca.png

 

 

 

Energy storage

 

waterfall.thumb.png.58ba67912b259801387d85016f45447e.png

 

 

 

Measurement setup - Omnimic with 5ms gating, driving an AX-550 with mic at 1m with turntable graduated in 10 degree increments....

 

 

Measure1.jpg.dd8b48fe086d215eb6120652a3c50ae6.jpg

 

 

Measure.jpg.3f22a849a83fb8e7e23e0928ef645228.jpg

 

 

Measure12.jpg.9b22699d2392df4fbeb27ba96a9c6021.jpg

 

 

BM-D450SMKII.pdf

  • Like 1
Link to comment
Share on other sites

On 10/24/2021 at 5:46 PM, grendel23 said:

I am using these horns with BMS 4592ND drivers. I am running active with Quarter Pies and it sounds good. I am getting K-402 horns in a few weeks and will compare.

do you have the klipsch k402 part numbers - tx

Link to comment
Share on other sites

On 10/23/2021 at 12:23 PM, Curious_George said:

I bought a pair of these recently for my eventual LaScala rebuild. I know these horns have come up before in various threads, but I don't recall seeing any frequency response graphs of a K55V (push-pin) on the 18 x 10 horn. Perhaps one is buried in a thread somewhere, but here is a measurement that I made this morning.

 

Two items I wanted to know about the horn was the low-end response, which clearly goes down to 400Hz and how smooth the frequency response was across the midrange band. The 18 x 10 and K55V appear to be a great match. I'm not a horn expert, but the 18 x 10 looks to be an exponential horn.

 

I have not listened to them yet, but will try and patch together at least one channel to see how they sound. 

ZXPC 18x10 Horn with K55V.jpg

Are you still using the factory k77?

Link to comment
Share on other sites

6 hours ago, jwgorman said:

I am happy with them too. 
I have run N314x and HF146 drivers with Eminence adapters. 

9E35DEF8-0521-4736-AFAC-7FC3D9C7D550.jpeg

What crossover frequency did you use with HF146 and did you need to roll in a tweeter ?

 

Thanks

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...