Help with non bf speaker
Help with non bf speaker
Hey guys I was given a pair of Melheart PA speakers made by a local audio company. They have a 15" mid driver and a horn driver. The 15 has about 7 ohms but the horn driver is open. Here are some pics of the speaker
https://flic.kr/p/S2b6FY
https://flic.kr/p/S4NS9k
https://flic.kr/p/SHJkPu
https://flic.kr/p/Tf58Do
https://flic.kr/p/SHJim3
How can I tell if I just need to replace the diaphragm, or replace the whole driver?
Thanks in advance,
Oscar
https://flic.kr/p/S2b6FY
https://flic.kr/p/S4NS9k
https://flic.kr/p/SHJkPu
https://flic.kr/p/Tf58Do
https://flic.kr/p/SHJim3
How can I tell if I just need to replace the diaphragm, or replace the whole driver?
Thanks in advance,
Oscar
-
- Posts: 6915
- Joined: Mon Nov 28, 2011 11:12 am
- Location: Ilfracombe Queensland Australia
- Contact:
Re: Help with non bf speaker
Take the HF drivers apart, remove the diaphragm.y2kindyz wrote:
How can I tell if I just need to replace the diaphragm, or replace the whole driver?
Thanks in advance,
Oscar
Now test the diaphragm again, seeing if you can find a spot on the voice coil where you get continuity again.
If you can get continuity that way, then the diaphragm's are likely blown.
Show us a pic!
See if Melhart can help you with what drivers they put in those cabs:
http://www.melhart.com/
Ask them what they loaded into those cabs, and if diaphragms are available.
If not, replace them with new drivers...
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...
-
- Posts: 8325
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Help with non bf speaker
Probably a 3 to 1 chance that it's an Eminence driver. If Melhart can't tell you or supply one, call Eminence direct - they might be able to cross-reference if it's one they built.
Is Melhart still around? I know they were always big in the Valley and with Latin bands. One store carried 'em in San Antonio several years ago, but haven't seen any of their stuff in a while.
Is Melhart still around? I know they were always big in the Valley and with Latin bands. One store carried 'em in San Antonio several years ago, but haven't seen any of their stuff in a while.
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
- Bill Fitzmaurice
- Site Admin
- Posts: 28647
- Joined: Tue May 02, 2006 5:59 pm
Re: Help with non bf speaker
The HF driver looks to be an OEM rebadged Eminence PSD 2002. The crossover looks very substandard. I can't tell if it's a 1st order/1st order or if it's a second order high pass, but either way it should be replaced. An Eminence PXB2:1K6 would be appropriate.
Re: Help with non bf speaker
Hey Bruce,
Yes they are still around. I actually remembered that I have a buddy that is working for them. I don't know if they are still building speakers, but back in the 80's and 90's they were the only game in town.
I was able to match the the HF driver to the PSD. Thank you for the recommendation on the crossover. These speakers are pretty old. I am sure it will be a benefit.
Here are some pics of the diaphragm and magnet. New the PSD 2002 is $65 and diaphragm is $35. Should I just replace the diaphragm.
Dia. 1
https://flic.kr/p/S6fwSr
https://flic.kr/p/TgvKWC
Magnet 1
https://flic.kr/p/TgvQBQ
Dia. 2
https://flic.kr/p/S3DykE
https://flic.kr/p/S6fEUt
Mag 2
https://flic.kr/p/S6fJq6
Let me know if I can get by with replacing the Diaphragm.
Thank you,
Oscar
Yes they are still around. I actually remembered that I have a buddy that is working for them. I don't know if they are still building speakers, but back in the 80's and 90's they were the only game in town.
Thanks Bill,Bill Fitzmaurice wrote:The HF driver looks to be an OEM rebadged Eminence PSD 2002. The crossover looks very substandard. I can't tell if it's a 1st order/1st order or if it's a second order high pass, but either way it should be replaced. An Eminence PXB2:1K6 would be appropriate.
I was able to match the the HF driver to the PSD. Thank you for the recommendation on the crossover. These speakers are pretty old. I am sure it will be a benefit.
Here are some pics of the diaphragm and magnet. New the PSD 2002 is $65 and diaphragm is $35. Should I just replace the diaphragm.
Dia. 1
https://flic.kr/p/S6fwSr
https://flic.kr/p/TgvKWC
Magnet 1
https://flic.kr/p/TgvQBQ
Dia. 2
https://flic.kr/p/S3DykE
https://flic.kr/p/S6fEUt
Mag 2
https://flic.kr/p/S6fJq6
Let me know if I can get by with replacing the Diaphragm.
Thank you,
Oscar
- Bill Fitzmaurice
- Site Admin
- Posts: 28647
- Joined: Tue May 02, 2006 5:59 pm
Re: Help with non bf speaker
If all you need to replace is the diaphragm there's nothing to be gained in replacing the driver.
Re: Help with non bf speaker
Unless, of course, you like throwing money away...Bill Fitzmaurice wrote:If all you need to replace is the diaphragm there's nothing to be gained in replacing the driver.
I know money often seals the deal, but seriously, quality is an investment, not an expense... Grant Bunter
Accept the fact that airtight and well-braced are more important than pretty on the inside. Bill Fitzmaurice
Accept the fact that airtight and well-braced are more important than pretty on the inside. Bill Fitzmaurice
Re: Help with non bf speaker
Thanks a bunch guys I will clean up the magnets and replace the diaphragm and be done.DJPhatman wrote:Unless, of course, you like throwing money away...Bill Fitzmaurice wrote:If all you need to replace is the diaphragm there's nothing to be gained in replacing the driver.
Re: Help with non bf speaker
Ok I am a bit confused. I spoke to my buddy that works at melharts and be said the diaphragm is a MD2001. I looked it up on parts express http://www.parts-express.com/eminence-m ... --290-5620 and it is a 1".
The diaphragm I have measures 2". So I was thinking it is the PSD2002 http://www.parts-express.com/eminence-p ... m--290-445.
So is the one I need the MD2001 or the PSD2002?
Thanks in advance
Oscar
The diaphragm I have measures 2". So I was thinking it is the PSD2002 http://www.parts-express.com/eminence-p ... m--290-445.
So is the one I need the MD2001 or the PSD2002?
Thanks in advance
Oscar
- Bill Fitzmaurice
- Site Admin
- Posts: 28647
- Joined: Tue May 02, 2006 5:59 pm
Re: Help with non bf speaker
It's a 1" compression driver, which refers to the throat diameter, not the diaphragm diameter. I'd say they're slight variations on the same diaphragm, look at the pictures.y2kindyz wrote:Ok I am a bit confused. I spoke to my buddy that works at melharts and be said the diaphragm is a MD2001. I looked it up on parts express http://www.parts-express.com/eminence-m ... --290-5620 and it is a 1".
-
- Posts: 8325
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Help with non bf speaker
I would guess that it is the MD2001 as that's the same driver that's in all the Yamaha Club series cabs, and that's the same type of cab that you have there.....I have some of those diaphragms for spares. Bill's right, it's a 2 inch with a 1 inch exit.y2kindyz wrote:Ok I am a bit confused. I spoke to my buddy that works at melharts and be said the diaphragm is a MD2001. I looked it up on parts express http://www.parts-express.com/eminence-m ... --290-5620 and it is a 1".
The diaphragm I have measures 2". So I was thinking it is the PSD2002 http://www.parts-express.com/eminence-p ... m--290-445.
So is the one I need the MD2001 or the PSD2002?
Thanks in advance
Oscar
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
- LelandCrooks
- Posts: 7244
- Joined: Thu May 04, 2006 9:36 am
- Location: Midwest/Kansas/Speaker Nirvana
- Contact:
Re: Help with non bf speaker
If you haven't ordered them yet, I have 4 8ohm and 2 16ohm diaphragms I'd really like to move. Half of whatever PE's price is. Drop me a line. webmaster@speakerhardware.com
If it's too loud, you're even older than me! Like me.
http://www.speakerhardware.com
http://www.speakerhardware.com
Re: Help with non bf speaker
Awesome. Sent email thanksLelandCrooks wrote:If you haven't ordered them yet, I have 4 8ohm and 2 16ohm diaphragms I'd really like to move. Half of whatever PE's price is. Drop me a line. webmaster@speakerhardware.com