Not sure if this is the right fourms to be posting this question.
Looking for suggestions for amps able to drive stable and dynamicly for a 2ohm load.
The speakers that are getting used are the Equinox Jupiter's.
Any help or discussion on this would be awsome.
I know spec's will say blah blah 2ohm but so far its been a little hit and miss as to stability of the amp.
Looking for suggestions for amps able to drive stable and dynamicly for a 2ohm load.
The speakers that are getting used are the Equinox Jupiter's.
Any help or discussion on this would be awsome.
I know spec's will say blah blah 2ohm but so far its been a little hit and miss as to stability of the amp.
Ahh , 2.5 ohm Z ... 340lbs. "save 3K $" ? Must be 15k worth of speaker.
Only an overbuilt amp can handle this.
Pass X350 or HCA2200II parasound. Class AB with dozens of outputs in
parallel.Be prepared to spend 2-5K $.
You would not want to risk these with a DIY setup ?
OS
Only an overbuilt amp can handle this.
Pass X350 or HCA2200II parasound. Class AB with dozens of outputs in
parallel.Be prepared to spend 2-5K $.
You would not want to risk these with a DIY setup ?
OS
Not sure I understand this question?
Not really sure Im going for a DIY setup its more understating the quality's Im looking for past the basic spec write ups. there is a knowledge and understanding that only a DIY community can seam to pass on...... well cause your the tinkers HEHE
I found the speaker at equinox audio.
I'll bet that the specification has been massaged to appear better than it is.
for instance it states:
I'll bet that the specification has been massaged to appear better than it is.
for instance it states:
and states:
yet it has a recommended amplifier power below 1kW:
Hafler's Excelinear series of amplifiers are stable down to 1 ohm and were supposedly designed to drive any speaker load [of that time]. They are also very reliable and relatively inexpensive. The two amplifiers of this series were the XL-280 and its higher powered sibling the XL-600. The later Strickland designed Hafler Transnova amps [9300/9303/9500/9505] are reportedly not stable into these lower impedances.
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Transnova amplifiers had a output MOS stage with gai in tension and in current and not the usual follower. This was not the right tool for drive hard 2 or 1 Ohm load (nearly a shortcircuit). The right tool is an amplifier high current capable (HC letters of Parasound amplifier's name). Amplifier must be capable of double outup current when load halve! For this reason you need many paralleled high current capable transistors in output followers stage and ... a lot of dissipation surface with high capacity blower fan!
McIntosh made some amps rated at 600W/0.25Ω
I modified a Mark Levinson ML 3 to drive 1Ω reliably (20 TO3 devices per channel on ±80V).
I modified a Mark Levinson ML 3 to drive 1Ω reliably (20 TO3 devices per channel on ±80V).
I only expressed curiosity about your skill level versus the expense of
your loudspeakers.
Unless you were a serious amp builder , I'm not sure making a 2R stable
amp would be in your "DIY corner" ... so I suggested the OEM alternative.
PS - I have a DIY amp that would drive them , my sub amp !
OS
NAD power amps have always had a good reputation for handling loads down to 2 ohms. I had a NAD3020 powering my Linn Isobariks for awhile; which says quite a lot about their capabilities.
The NAD3020 had an undersized EI trafo powering a TO-3 output stage.
Actually , these factors combined to keep you under SOA with the 2R load.
Many newer TO-3P /TO-264 output stages would of let out magic smoke. 🙁
OS
Actually , these factors combined to keep you under SOA with the 2R load.
Many newer TO-3P /TO-264 output stages would of let out magic smoke. 🙁
OS
2 mono NAD2600 worked on MartinLogan Sequels, much better than other widely available brands, new NAD isn't SS, Hypex Ncore, but won't have trouble either with load.
Ostripper,
I agree about the NAD 3020 and it's only provisionally a 20 watt amp!, however it did not miss a beat with the Isobariks, although never very loud of course. The Brik's are 4 ohm nominally but drop off way below this with heavy bass. The ability of the 3020 to handle low impedances is probably one of the main reasons why it enjoyed such wide popularity; that and it's warm natural presentation.
I agree about the NAD 3020 and it's only provisionally a 20 watt amp!, however it did not miss a beat with the Isobariks, although never very loud of course. The Brik's are 4 ohm nominally but drop off way below this with heavy bass. The ability of the 3020 to handle low impedances is probably one of the main reasons why it enjoyed such wide popularity; that and it's warm natural presentation.
Ahh yeah very minimal to nothing on the diy amp building side of the world, merely asked the question here due to the DIY community knowledge of the internal workings of amps claiming 2ohm load performance
If I wanted to build an amp to do 300W @ 2 ohms I would probably look at a 1 KW stereo amp and replace the transformer for one with a lower voltage but the same VA rating.
What are we talking about? We are talking about amplifiers erogating power on a REAL 2 Ohms load (maybe with same reactive components) or we talk about driving capability of a commercial amplifier driving loudspeakers with a minimal impedence of 2 Ohms on a specifical frequency or small range of frequency?
You could drive a loudspeaker with a minimal impedence of 2 Ohms near resonance frequency with a 20W NAD with undersized power supply transformer. It's a dinamically request of power for a fraction of second on a single frequency (or better small range); other thing is a REAL 2 Ohms load like Allison or Dalquist of glorious time of past! Try to drive it with the same NAD!
Hi,
Likely nominal output into 8 ohms, here we have 2 ohms. So x 4.
rgds, sreten.
Only a few amplifiers will reliably drive 2 ohm speakers, and
they are expensive, and poor value for 8 ohm speakers.
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