Replacement 1" Screw on Compression drivers |
Post Reply | Page 12> |
Author | ||
markie
Old Croc Joined: 31 October 2005 Location: Sunny Liskeard. Status: Offline Points: 4570 |
Post Options
Thanks(0)
Posted: 28 February 2021 at 2:14am |
|
Just found this on the net. It suggests a method of improving the sound of piezos. Perhaps someone could comment on this???
|
||
If it's got wheels or tits it's gonna cost a fortune
|
||
njw
Old Croc Joined: 26 March 2010 Location: S. Wales Status: Offline Points: 2572 |
Post Options
Thanks(0)
|
|
I've got a pair of those kicking about in a box of old drivers in the garage, you're more than welcome to them OP if you cover the postage, although it may be more economical to order new units from the links above..
|
||
markie
Old Croc Joined: 31 October 2005 Location: Sunny Liskeard. Status: Offline Points: 4570 |
Post Options
Thanks(0)
|
|
I used one of those piezos in a lockdown (1) project. I had a pair of Faital Pro 6FE100s laying around I put them in a box with a Selenium HM17-25 horn.
Rather than bothering with a crossover I put the piezo on the back of the horn with a 4u7 polypropylene cap and a resistor. Results were surprisingly good. I used it with a 10" sub (Volt) to play some tracks after the "Clapping for the NHS" last summer.
|
||
If it's got wheels or tits it's gonna cost a fortune
|
||
Wikl109
Young Croc Joined: 29 April 2009 Location: Yorkshire Status: Offline Points: 968 |
Post Options
Thanks(0)
|
|
As Earplug says it looks like they are a standard thread so a proper screw thread comp driver will fit but it really isn't worth it.
It looks as though the piezo's linked to above are the same so buying a replacement pair of those should get these back up and running for less than £15. Doing this will also mean they've been put back to 'as new' condition if you ever decide to sell them on. |
||
Cheers, Chris.
|
||
APW
Young Croc Joined: 13 November 2012 Location: Kent, UK Status: Offline Points: 1173 |
Post Options
Thanks(0)
|
|
They are probably worth spending 10 to 15 quid on but not much more!!
Edited by APW - 25 February 2021 at 2:43pm |
||
Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7199 |
Post Options
Thanks(0)
|
|
"The horn may not even take a standard screw thread comp driver." No, I'm pretty sure that it uses the same thread. The piezo drivers linked to above will definitely have the same thread as your "srandard" 1" comp driver. But as noted - really not worth doing... Edited by Earplug - 25 February 2021 at 2:31pm |
||
Earplugs Are For Wimps!
|
||
APW
Young Croc Joined: 13 November 2012 Location: Kent, UK Status: Offline Points: 1173 |
Post Options
Thanks(0)
|
|
Yep, they are the same as the ones posted in the links above by Markie and myself.
|
||
Ajsski99
Registered User Joined: 07 October 2019 Status: Offline Points: 134 |
Post Options
Thanks(0)
|
|
Im pretty sure the tweeters in these boxes are indeed piezio tweeters.
There doesnt seem to be a "crossover board" either, just some capacitors and resistors (I assume?) hot glued to the bottom of the cab. Here are some pictures of the inside. |
||
APW
Young Croc Joined: 13 November 2012 Location: Kent, UK Status: Offline Points: 1173 |
Post Options
Thanks(0)
|
|
Terralec sell the same ones for £5.75 each inc delivery: Edited by APW - 25 February 2021 at 1:33pm |
||
markie
Old Croc Joined: 31 October 2005 Location: Sunny Liskeard. Status: Offline Points: 4570 |
Post Options
Thanks(0)
|
|
I have a few screw on compression drivers which can be very cheap. But of course you still have to sort some kind of crossover. Probably best to get a couple of screw fit piezos.
I have used the ones below and they are quite good. Edited by markie - 25 February 2021 at 12:26pm |
||
If it's got wheels or tits it's gonna cost a fortune
|
||
APW
Young Croc Joined: 13 November 2012 Location: Kent, UK Status: Offline Points: 1173 |
Post Options
Thanks(0)
|
|
The later SEM version definitely has a piezo, the SE version the is older version and is rated slightly higher power than the SEM version, the SE states the crossover frequency as 3.2Khz (way too high for a 15”!!) on the rear of the cabinet, I’m not saying the SE version definitely has a proper comp driver but without looking at what’s still inside the cabinet we are grasping at straws here…. Another thing to bear in mind, these things often sell for well under £100 per pair working (there is a single one on ebay currently for £12.00) , they are NOT worth putting £60 quid’s worth of comp drivers (£180 for the CD150 sugested above!!) + adapters + possible xovers into the chipboard/MDF cases. |
||
GAZ.
Old Croc Joined: 16 January 2007 Location: Hertfordshire Status: Offline Points: 2433 |
Post Options
Thanks(0)
|
|
Yes, a quick google reveals these speaker had piezo drivers in, so indeed there will be very little in the way of crossover components in there. If you’re on a budget it might be wise to just buy replacement piezo units which will not require any further alterations and be considerably cheaper than buying compressions and appropriate crossovers.
Also if you do decide to upgrade and fit compressions, I had cd 130’s once and I didn’t like them. Very harsh sound. The cd 150 is a far superior unit. |
||
100% Earth Moving Bass
|
||
Post Reply | Page 12> |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |