EV DH1506 La Scala K-55 Mid driver vs EV-DH1506

[wvu80]

I recently picked up a pair of Electro-Voice DH1506 compression drivers (CD) to upgrade my CF-4's. 

 

 

There was nothing wrong with the stock K-63's, but strong endorsements from Moray James and Alexg5775 got me wondering if the already fantastic sounding CF-4's didn't have a little room for improvement.

 

I A/B'd the K-63 and the DH1506 and found them very close in sound.  My testing was very informal and the sound was slightly better in the midrange with the DH1506.  I wanted to get them measured properly to see if the diaphragms were within spec, so after a quick call to Mustang Guy I was off to the Speaker Ranch to get them measured.  As usual, Craig had a better idea.

 

I call his place the Speaker Ranch because his building is so large it's like a free range area where Klipsch speakers can wander and play freely, as loud as they want. 

 

There are fully 6 La Scalas set up in a 6.2 configuration, sometimes more.  See Mustang Guy's signature for the entire list.  It was around 20 or 30 last time I checked.  Craig  immediately grasped a 1506 which was attached to the CF-4 horn and connected it to the squacker section of the right side La Scala.  Then we listened.

 

 

We set up in the main LP and could hear an immediate difference, probably in favor of the DH1506.  I say probably because this was NOT a controlled test, it was very much seat of the pants.  We both thought the DH1506 might have been more efficient making that side a little brighter.  If there was a difference, it was very little, both CD's sounded fantastic. Certainly one CD could be used interchangeably with the other and in a blind listening test you could not tell which was which.

 

Craig took some measurements of both CD's in a very interesting way, so I think I'll stop here and let him post his comments.

Edited March 20, 2015 by wvu80

[Frank Jansz]

On Saturday, March 21, 2015 at 5:13 AM, wvu80 said:

I recently picked up a pair of Electro-Voice DH1506 compression drivers (CD) to upgrade my CF-4's. 

 

 

There was nothing wrong with the stock K-63's, but strong endorsements from Moray James and Alexg5775 got me wondering if the already fantastic sounding CF-4's didn't have a little room for improvement.

 

I A/B'd the K-63 and the DH1506 and found them very close in sound.  My testing was very informal and the sound was slightly better in the midrange with the DH1506.  I wanted to get them measured properly to see if the diaphragms were within spec, so after a quick call to Mustang Guy I was off to the Speaker Ranch to get them measured.  As usual, Craig had a better idea.

 

I call his place the Speaker Ranch because his building is so large it's like a free range area where Klipsch speakers can wander and play freely, as loud as they want. 

 

There are fully 6 La Scalas set up in a 6.2 configuration, sometimes more.  See Mustang Guy's signature for the entire list.  It was around 20 or 30 last time I checked.  Craig  immediately grasped a 1506 which was attached to the CF-4 horn and connected it to the squacker section of the right side La Scala.  Then we listened.

 

 

We set up in the main LP and could hear an immediate difference, probably in favor of the DH1506.  I say probably because this was NOT a controlled test, it was very much seat of the pants.  We both thought the DH1506 might have been more efficient making that side a little brighter.  If there was a difference, it was very little, both CD's sounded fantastic. Certainly one CD could be used interchangeably with the other and in a blind listening test you could not tell which was which.

 

Craig took some measurements of both CD's in a very interesting way, so I think I'll stop here and let him post his comments.

Please send me the Specs on The EV Compression Drivers . And I am looking for a Pair of 8 ohms Drivers with 2 " Mouth or Throat and 4 "Voice Coils to suit my JBL 2386  horn Flares that works from 350 Hz to around 17.000 Hz.

My Lascala K 33 Woofers Starts from 50 hz and starts Tolling off at around 500 Hz  o need a pair of drivers that starts from 400 to around 7000 Hz maximum

 

Before my Tweeter can work fown to around 5000 hz  and up to 18.000 hz

Rgds

Frank Jansz