What is the nominal impedennce of Zaph|Audio Bargain Aluminum MTMs?

aparobson · 3rd June 2009, 04:17 AM

I'm in the process of building the Zaph|Audio's Bargain Aluminum MTMs and plan to drive them with a tube amp and want to make sure I get the proper output transformers to drive them. The tweeter is rated at 6 ohms and the woofers are 8 ohms each. The crossover introduces a 7 ohm resistor on the tweeter. Any help would be greatly appreciated...

http://zaphaudio.com/BAMTM.html

vaughn · 3rd June 2009, 04:28 AM

I don't know exactly but I would ensure that your opt are capable of driving a 4 ohm load.
I actually tried a SE 2A3 amp with my Zaph's and it was beautiful sounding, although the
bass was a little underdamped. I think they would work quite well with a pp amp.

PeteMcK · 3rd June 2009, 04:45 AM

nominal - 4 ohms, actual ~ 3 ohms

aparobson · 6th June 2009, 12:39 AM

Thank you both. I have built a Tubelab Simple SE (http://www.tubelab.com/SimpleSE.htm), and initially I put cheap 8 ohm Edcors into it, but I'm now upgrading to the higher quality CXSE output transformers so I will order the 4 ohm ones. I can't afford the multi-tap Hammonds (the Edcors are pushing my budget as it is).

Vaughn - are your Zaph's floor-standing and if so, ported or sealed? I'm planning to go with the following option that he suggests on his website: "If you are not using a subwoofer and prefer a leaner but deeper bass, go for a larger sealed enclosure. You can go up 1 cu ft per driver - in other words, the same cabinet size as the vented box but sealed." - I'm hoping that selecting this option won't cause them to become "boomy". Also, do you know what output transformers the tube amp was using?

Again - thx for your help!

vaughn · 6th June 2009, 12:51 AM

I no longer have the Zaph's but I went with the 2 Cu ft ported floorstanding version.

My opt trannies were James 6123hs, which were very nice, if a little expensive.

3rd June 2009, 04:17 AM	#1
aparobson diyAudio Member Join Date: Sep 2008	What is the nominal impedennce of Zaph\|Audio Bargain Aluminum MTMs? I'm in the process of building the Zaph\|Audio's Bargain Aluminum MTMs and plan to drive them with a tube amp and want to make sure I get the proper output transformers to drive them. The tweeter is rated at 6 ohms and the woofers are 8 ohms each. The crossover introduces a 7 ohm resistor on the tweeter. Any help would be greatly appreciated... http://zaphaudio.com/BAMTM.html

3rd June 2009, 04:45 AM	#3
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	nominal - 4 ohms, actual ~ 3 ohms __________________ ‘today… there lives alongside the twentieth century the tenth or thirteenth. A hundred million people use electricity and still believe in the magic power of signs and exorcisms” Trotsky

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Zaph Bargain Aluminum MTM - something missing - help	SoundQuest	Multi-Way	80	16th October 2009 01:00 AM
Zaph Bargain Mini Q's	cyberspyder	Multi-Way	30	13th March 2008 03:23 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

3rd June 2009, 04:28 AM	#2
vaughn diyAudio Member Join Date: Feb 2008	I don't know exactly but I would ensure that your opt are capable of driving a 4 ohm load. I actually tried a SE 2A3 amp with my Zaph's and it was beautiful sounding, although the bass was a little underdamped. I think they would work quite well with a pp amp.

6th June 2009, 12:39 AM	#4
aparobson diyAudio Member Join Date: Sep 2008	Thank you both. I have built a Tubelab Simple SE (http://www.tubelab.com/SimpleSE.htm), and initially I put cheap 8 ohm Edcors into it, but I'm now upgrading to the higher quality CXSE output transformers so I will order the 4 ohm ones. I can't afford the multi-tap Hammonds (the Edcors are pushing my budget as it is). Vaughn - are your Zaph's floor-standing and if so, ported or sealed? I'm planning to go with the following option that he suggests on his website: "If you are not using a subwoofer and prefer a leaner but deeper bass, go for a larger sealed enclosure. You can go up 1 cu ft per driver - in other words, the same cabinet size as the vented box but sealed." - I'm hoping that selecting this option won't cause them to become "boomy". Also, do you know what output transformers the tube amp was using? Again - thx for your help!

6th June 2009, 12:51 AM	#5
vaughn diyAudio Member Join Date: Feb 2008	I no longer have the Zaph's but I went with the 2 Cu ft ported floorstanding version. My opt trannies were James 6123hs, which were very nice, if a little expensive.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)