|
|
Post by tabbycph on Aug 14, 2021 7:27:27 GMT -5
Hi all, I have just got a pair of Triangle Concerto speakers and just discovered that they are: Nominal impedance 4 Ω Minimum impedance 2,5 Ω and the DR2 amp is: Minimum Recommended Load Impedance (per channel): 4 Ohms. I dont wanna damage speakers or amp and my speakers a very expensive. Can I run them without damage or do I need an other amp.? |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Aug 14, 2021 7:43:43 GMT -5
Hi all, I have just got a pair of Triangle Concerto speakers and just discovered that they are: Nominal impedance 4 Ω Minimum impedance 2,5 Ω and the DR2 amp is: Minimum Recommended Load Impedance (per channel): 4 Ohms. I dont wanna damage speakers or amp and my speakers a very expensive. Can I run them without damage or do I need an other amp.? My mains are Tektons and they dip down to 2.3 ohms around 100hz. I tried my Tektons which are 4 ohms nominal and 2.3 ohm minimum w/ both a Gen 3 XPA 5 and DR3. Neither amp shut down but they sounded rather harsh in comparison to the Parasound Halo A31. If your mains are current/amperage hungry w/ the low minimum ohms ya might want to ck out the Parasound Halo A21+. Ya can purchase it 600 bucks off retail here: new-age-electronics.com/halo-by-parasound-a21-black-1.htmlThe amp utilizes the same power supply as the JC1+ monoblocks: parasound.com/ |
|
|
|
Post by Boomzilla on Aug 14, 2021 8:43:31 GMT -5
|
|
|
|
Post by DavidR on Aug 14, 2021 9:22:28 GMT -5
IIRC all Emotiva amps are stable down to 2 ohms.
You should add a 'tank' circuit to your speaker's crossover to prevent that big dip. Should have been designed with one.
|
|
|
|
Post by AudioHTIT on Aug 14, 2021 11:08:30 GMT -5
IIRC all Emotiva amps are stable down to 2 ohms. You should add a 'tank' circuit to your speaker's crossover to prevent that big dip. Should have been designed with one. I think you’re right, except for the models that are ‘bridged’. I believe the DR series are bridged but I’m not sure, If so they would be more sensitive to low impedance. |
|
|
|
Post by DavidR on Aug 14, 2021 11:25:29 GMT -5
AudioHTIT congrats on your promotion to moderator. Do you mean bridgeable ? As in a 2-channel amp turned into a mono when bridged. I don't know either but it would only come into play IF bridged for one channel use. In that case you'd be better off getting the DR1 monoblocks.
|
|
|
|
Post by tabbycph on Aug 14, 2021 11:29:16 GMT -5
I dont wanna damage speakers or amp and my speakers a very expensive. Can I runMy mains are Tektons and they dip down to 2.3 ohms around 100hz. I tried my Tektons which are 4 ohms nominal and 2.3 ohm minimum w/ both a Gen 3 XPA 5 and DR3. Neither amp shut down but they sounded rather harsh in comparison to the Parasound Halo A31. If your mains are current/amperage hungry w/ the low minimum ohms ya might want to ck out the Parasound Halo A21+. Ya can purchase it 600 bucks off retail here: new-age-electronics.com/halo-by-parasound-a21-black-1.htmlThe amp utilizes the same power supply as the JC1+ monoblocks: parasound.com/Thanks I will look at Parasound. |
|
|
|
Post by AudioHTIT on Aug 14, 2021 12:12:15 GMT -5
AudioHTIT congrats on your promotion to moderator. Do you mean bridgeable ? As in a 2-channel amp turned into a mono when bridged. I don't know either but it would only come into play IF bridged for one channel use. In that case you'd be better off getting the DR1 monoblocks. Yes, same principle except they’ve already flipped the switch so it’s always on. I believe any of the Emo amps with the double-wide blades fall into this category, they are duplicate amps running bridged. Thanks, but my assignment is temporary. |
|
|
|
Post by DavidR on Aug 14, 2021 12:26:48 GMT -5
AudioHTIT congrats on your promotion to moderator. Do you mean bridgeable ? As in a 2-channel amp turned into a mono when bridged. I don't know either but it would only come into play IF bridged for one channel use. In that case you'd be better off getting the DR1 monoblocks. Yes, same principle except they’ve already flipped the switch so it’s always on. I believe any of the Emo amps with the double-wide blades fall into this category, they are duplicate amps running bridged. Thanks, but my assignment is temporary. Where is @keithl when you need him? I found nothing in the DR2 manual saying stable at 2 ohms.
Good luck with your assignment.
|
|
|
|
Post by AudioHTIT on Aug 14, 2021 12:46:27 GMT -5
Yes, same principle except they’ve already flipped the switch so it’s always on. I believe any of the Emo amps with the double-wide blades fall into this category, they are duplicate amps running bridged. Thanks, but my assignment is temporary. Where is @keithl when you need him? I found nothing in the DR2 manual saying stable at 2 ohms.
Good luck with your assignment.
I’m sure he’ll pop in eventually. I know the manuals don’t say they’re stable into 2 ohms, but they’ve stated in the past their amps can handle that. However, that was back in the G2 days, and I don’t think it’s ever applied to the bridged designs, garbulky would probably know. I think it’s prudent for the OP to be cautious, there are a lot of impedance and power handling variables with each speaker. |
|
|
|
Post by omuracada on Aug 15, 2021 10:42:58 GMT -5
Hi all, I have just got a pair of Triangle Concerto speakers and just discovered that they are: Nominal impedance 4 Ω Minimum impedance 2,5 Ω and the DR2 amp is: Minimum Recommended Load Impedance (per channel): 4 Ohms. I dont wanna damage speakers or amp and my speakers a very expensive. Can I run them without damage or do I need an other amp.? My mains are Tektons and they dip down to 2.3 ohms around 100hz. I tried my Tektons which are 4 ohms nominal and 2.3 ohm minimum w/ both a Gen 3 XPA 5 and DR3. Neither amp shut down but they sounded rather harsh in comparison to the Parasound Halo A31. If your mains are current/amperage hungry w/ the low minimum ohms ya might want to ck out the Parasound Halo A21+. Ya can purchase it 600 bucks off retail here: new-age-electronics.com/halo-by-parasound-a21-black-1.htmlThe amp utilizes the same power supply as the JC1+ monoblocks: parasound.com/I want to start by saying since there is no tone in written words, please note that the tone with my following post is one of open arms and truly just an opinion that I experienced recently. Also note that I am a truly a real rookie with this hobby! I will say the the emotiva community in my experience has been fantastic and I have followed the posts of people like Deleted and he has helped me more then he could ever know! In fact its because of these forums that I decided to run a test of my own. I own ML expressions and they too have a low impedance. I was in the same shoes as you. I decided to order two Emotiva HC-1 Monoblocks for them as well as the Panasound A31. Please note that all my testing is done via just plain old listening as well as some SPL measurements (my main application is movies). I spent a lot of time going back and forth between the A31 and the HC-1's. Please note that though I watch more movies then music, I only used music for testing the two channels. We stayed in Reference stereo mode 2 channel and listen to the same 5 songs over and over again between the two amps. Phase two of the test was to then invite my wife and a few friends over (who could care less about this hobby of ours) and asked if they could hear a stalk difference between the two amps. In the end it was unanimous as everyone including me agreed that the HC-1's where the best of the two. Again this is just my personal opinion and I am in no form fit or fashion saying the A31 was awful! I have also been told the parasounds need a breaking in period and that could be why there was such a difference between the two. I had to make a decision before the return policies of these amps ran out:) We all know sound is suggestive and for me I am glad I did this test, as I was able to see the difference almost immediately, it also put my obsessives mind at rest knowing I tried a few different options. For me the HC-1's created more clarity and the soundstage that was produced had us hearing things we just did not hear from the parasound. I will say the parasound did give off a warmer sound, and not sure if this was just a placebo effect however I did feel the A31 had produced bass however the highs were not as good as the HC-1's. For me and again I could be wrong however I really liked the strength and push that the HC-1's gave me. Not sure if this helps at all as the only "tech" testing i did was from a level (spl) perspective. When the left and right where hooked up to the A31 to get them to hit 75db on medium tone (using XMC2) the left had to be set to +7db and the right was +5db. When I switched to the HC-1's to hit 75db I had to make the left speaker -2.5DB and the right had to be at -1.0db. I ended up returning the A31 and ordering(again there may come a day where I look back and realized i should have kept it) another HC-1 for my center channel. I hope this helps as what I have learned the most is that all you can do is ask the questions, read and in the end aggregate everyone's opinion then formulate your own opinion by going out and trying the suggestions. For me the best thing I learned to do is take advantage of the return policies. For instance to return the A31's it cost me 20.00 all in for the return fee and shipping. I will happily pay that for the confidence that I made the right selection for what I want in a set up! If I had to return the Emotiva's it would have been more to return as I have to pay 100% shipping, however again it would be worth it as I can sleep at night knowing I ran the tests that led me to believe with confidence that I made the right choice. As in the end the only one that needs to be happy in this hobby is you the individual:) Sorry for the long post and good luck!! Also thanks to everyone in the community as it really has been awesome learning more and more about sound! |
|
|
|
Post by AudioHTIT on Aug 15, 2021 11:11:05 GMT -5
… I decided to order two Emotiva HC-1 Monoblocks … Glad the HC-1’s are working out well for you. In relation to the DR-2 the OP is using, the HC-1 is not a bridged design, and should be more tolerant of low impedance loads. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Aug 15, 2021 11:49:52 GMT -5
My mains are Tektons and they dip down to 2.3 ohms around 100hz. I tried my Tektons which are 4 ohms nominal and 2.3 ohm minimum w/ both a Gen 3 XPA 5 and DR3. Neither amp shut down but they sounded rather harsh in comparison to the Parasound Halo A31. If your mains are current/amperage hungry w/ the low minimum ohms ya might want to ck out the Parasound Halo A21+. Ya can purchase it 600 bucks off retail here: new-age-electronics.com/halo-by-parasound-a21-black-1.htmlThe amp utilizes the same power supply as the JC1+ monoblocks: parasound.com/I want to start by saying since there is no tone in written words, please note that the tone with my following post is one of open arms and truly just an opinion that I experienced recently. Also note that I am a truly a real rookie with this hobby! I will say the the emotiva community in my experience has been fantastic and I have followed the posts of people like Deleted and he has helped me more then he could ever know! In fact its because of these forums that I decided to run a test of my own. I own ML expressions and they too have a low impedance. I was in the same shoes as you. I decided to order two Emotiva HC-1 Monoblocks for them as well as the Panasound A31. Please note that all my testing is done via just plain old listening as well as some SPL measurements (my main application is movies). I spent a lot of time going back and forth between the A31 and the HC-1's. Please note that though I watch more movies then music, I only used music for testing the two channels. We stayed in Reference stereo mode 2 channel and listen to the same 5 songs over and over again between the two amps. Phase two of the test was to then invite my wife and a few friends over (who could care less about this hobby of ours) and asked if they could hear a stalk difference between the two amps. In the end it was unanimous as everyone including me agreed that the HC-1's where the best of the two. Again this is just my personal opinion and I am in no form fit or fashion saying the A31 was awful! I have also been told the parasounds need a breaking in period and that could be why there was such a difference between the two. I had to make a decision before the return policies of these amps ran out:) We all know sound is suggestive and for me I am glad I did this test, as I was able to see the difference almost immediately, it also put my obsessives mind at rest knowing I tried a few different options. For me the HC-1's created more clarity and the soundstage that was produced had us hearing things we just did not hear from the parasound. I will say the parasound did give off a warmer sound, and not sure if this was just a placebo effect however I did feel the A31 had produced bass however the highs were not as good as the HC-1's. For me and again I could be wrong however I really liked the strength and push that the HC-1's gave me. Not sure if this helps at all as the only "tech" testing i did was from a level (spl) perspective. When the left and right where hooked up to the A31 to get them to hit 75db on medium tone (using XMC2) the left had to be set to +7db and the right was +5db. When I switched to the HC-1's to hit 75db I had to make the left speaker -2.5DB and the right had to be at -1.0db. I ended up returning the A31 and ordering(again there may come a day where I look back and realized i should have kept it) another HC-1 for my center channel. I hope this helps as what I have learned the most is that all you can do is ask the questions, read and in the end aggregate everyone's opinion then formulate your own opinion by going out and trying the suggestions. For me the best thing I learned to do is take advantage of the return policies. For instance to return the A31's it cost me 20.00 all in for the return fee and shipping. I will happily pay that for the confidence that I made the right selection for what I want in a set up! If I had to return the Emotiva's it would have been more to return as I have to pay 100% shipping, however again it would be worth it as I can sleep at night knowing I ran the tests that led me to believe with confidence that I made the right choice. As in the end the only one that needs to be happy in this hobby is you the individual:) Sorry for the long post and good luck!! Also thanks to everyone in the community as it really has been awesome learning more and more about sound! Hey there omuracada, Appreciate your feedback! I haven't any experience w/ the Emotiva HC-1 monoblocks. Will say though, coming from the DR3 to the A31 I did notice a gain reduction w/ the A31 too. Didn't surprise me though because the DR3 is rated 600 watts x 3 into 4 ohms while the A31 400 watts x 3 into 4 ohms. What won me over from the DR3 to the A31 was two things. One, the Tektons are very critical and expose variations in uptstream components. The fidelity was nowhere near the A31 so this was in Parasound's favor. Interesting you stated the Parasound was warmer - I agree, and noted at the time that the Emotiva XPA 5 and DR3 were both more "harsher". I probably would of went earlier generation Emotivas as I'm sure the once back then class A-A/B design difference between Parasound might be less. But I wasn't going to purchase an used amp since such designs are no longer offered by Emotiva. I wonder whether the harshness I heard from the Emotivas were at a certain frequency or around 100hz where the impedance was down to 2.3 ohms? Likewise, I've read reviews of the XPA Gen 3 amps and reviewers that performed tests measured distortion in the midrange and offered an explanation of other reviewers which claimed the Emotiva was harsher by this measurable distortion. Second, the difference in maintaining absolute polarity. I run a mixed system mains running from the A31 and subs amplified. At the time I was mixing between XLR and RCA and well decided I did not like Emotiva's final design decision for the balanced XLR pin configuration. What actually ticked me off the most was the slippery explanation of how maintaining absolute polarity doesn't matter as signals are often changed numerous times w/in the amp. Again, this was well over a year ago before I had the option of running REW testing for phase/polarity etc. The guess work had me throwing my hands up in the air in frustration especially when phase issues were not so simple as to whether speakers were 180 degrees out of phase. Anyhoot, glad your monoblocks are working out for you. I haven't any plans to upgrade in the near future but I do have my eyes open on two amps at the moment: Parasound JC5 and Coda: hometheaterreview.com/coda-technologies-continuum-no-8-stereo-amplifier/What I like about the JC5 is that the 2 channel amp can be bridged. And a later upgrade then could allow me to run two JC5s as monoblocks. Problem is..... the JC5s are rated bridged into 8 ohms and my Ulfs are 4 ohms. I've been meaning to contact Eric of Tekton and ask whether the 4 ohm variation of the cabinets and 8 ohm version is a matter of rewiring. This will impact my final decision in an upgrade path in the future. The Coda.... I just dunno about going down in power rather than upwards. The fidelity has to be a clear cut winner... though... I've looked into the tube amp path but like you I also utilize my system for theater. And I DO enjoy high SPL blitz now and then. For most sane listening levels I operate the Parasound w/in its class A limits of under 7 watts. Though without the 4-10s running and a +10db house curve 20 to 30 watts from tube power isn't going to be enough during my normal play volume while enjoying cinema low frequencies. Especially 9ft to MLP. To achieve 115 in the sub frequency at DTS/THX reference levels 64 watts RMS are necessary: 99db 2 watts [2.83 volts into 4ohms] 102db 4 watts 105db 8 watts 108db 16 watts 111db 32 watts 115db 64watts Amp wise I do need a design that is synergistic w/ the Tektons in fidelity while taking advantage of their 1000 watt power handling. Not asking much am I?! |
|
|
|
Post by omuracada on Aug 15, 2021 12:34:09 GMT -5
I want to start by saying since there is no tone in written words, please note that the tone with my following post is one of open arms and truly just an opinion that I experienced recently. Also note that I am a truly a real rookie with this hobby! I will say the the emotiva community in my experience has been fantastic and I have followed the posts of people like Deleted and he has helped me more then he could ever know! In fact its because of these forums that I decided to run a test of my own. I own ML expressions and they too have a low impedance. I was in the same shoes as you. I decided to order two Emotiva HC-1 Monoblocks for them as well as the Panasound A31. Please note that all my testing is done via just plain old listening as well as some SPL measurements (my main application is movies). I spent a lot of time going back and forth between the A31 and the HC-1's. Please note that though I watch more movies then music, I only used music for testing the two channels. We stayed in Reference stereo mode 2 channel and listen to the same 5 songs over and over again between the two amps. Phase two of the test was to then invite my wife and a few friends over (who could care less about this hobby of ours) and asked if they could hear a stalk difference between the two amps. In the end it was unanimous as everyone including me agreed that the HC-1's where the best of the two. Again this is just my personal opinion and I am in no form fit or fashion saying the A31 was awful! I have also been told the parasounds need a breaking in period and that could be why there was such a difference between the two. I had to make a decision before the return policies of these amps ran out:) We all know sound is suggestive and for me I am glad I did this test, as I was able to see the difference almost immediately, it also put my obsessives mind at rest knowing I tried a few different options. For me the HC-1's created more clarity and the soundstage that was produced had us hearing things we just did not hear from the parasound. I will say the parasound did give off a warmer sound, and not sure if this was just a placebo effect however I did feel the A31 had produced bass however the highs were not as good as the HC-1's. For me and again I could be wrong however I really liked the strength and push that the HC-1's gave me. Not sure if this helps at all as the only "tech" testing i did was from a level (spl) perspective. When the left and right where hooked up to the A31 to get them to hit 75db on medium tone (using XMC2) the left had to be set to +7db and the right was +5db. When I switched to the HC-1's to hit 75db I had to make the left speaker -2.5DB and the right had to be at -1.0db. I ended up returning the A31 and ordering(again there may come a day where I look back and realized i should have kept it) another HC-1 for my center channel. I hope this helps as what I have learned the most is that all you can do is ask the questions, read and in the end aggregate everyone's opinion then formulate your own opinion by going out and trying the suggestions. For me the best thing I learned to do is take advantage of the return policies. For instance to return the A31's it cost me 20.00 all in for the return fee and shipping. I will happily pay that for the confidence that I made the right selection for what I want in a set up! If I had to return the Emotiva's it would have been more to return as I have to pay 100% shipping, however again it would be worth it as I can sleep at night knowing I ran the tests that led me to believe with confidence that I made the right choice. As in the end the only one that needs to be happy in this hobby is you the individual:) Sorry for the long post and good luck!! Also thanks to everyone in the community as it really has been awesome learning more and more about sound! Hey there omuracada, Appreciate your feedback! I haven't any experience w/ the Emotiva HC-1 monoblocks. Will say though, coming from the DR3 to the A31 I did notice a gain reduction w/ the A31 too. Didn't surprise me though because the DR3 is rated 600 watts x 3 into 4 ohms while the A31 400 watts x 3 into 4 ohms. What won me over from the DR3 to the A31 was two things. One, the Tektons are very critical and expose variations in uptstream components. The fidelity was nowhere near the A31 so this was in Parasound's favor. Interesting you stated the Parasound was warmer - I agree, and noted at the time that the Emotiva XPA 5 and DR3 were both more "harsher". I probably would of went earlier generation Emotivas as I'm sure the once back then class A-A/B design difference between Parasound might be less. But I wasn't going to purchase an used amp since such designs are no longer offered by Emotiva. I wonder whether the harshness I heard from the Emotivas were at a certain frequency or around 100hz where the impedance was down to 2.3 ohms? Likewise, I've read reviews of the XPA Gen 3 amps and reviewers that performed tests measured distortion in the midrange and offered an explanation of other reviewers which claimed the Emotiva was harsher by this measurable distortion. Second, the difference in maintaining absolute polarity. I run a mixed system mains running from the A31 and subs amplified. At the time I was mixing between XLR and RCA and well decided I did not like Emotiva's final design decision for the balanced XLR pin configuration. What actually ticked me off the most was the slippery explanation of how maintaining absolute polarity doesn't matter as signals are often changed numerous times w/in the amp. Again, this was well over a year ago before I had the option of running REW testing for phase/polarity etc. The guess work had me throwing my hands up in the air in frustration especially when phase issues were not so simple as to whether speakers were 180 degrees out of phase. Anyhoot, glad your monoblocks are working out for you. I haven't any plans to upgrade in the near future but I do have my eyes open on two amps at the moment: Parasound JC5 and Coda: hometheaterreview.com/coda-technologies-continuum-no-8-stereo-amplifier/What I like about the JC5 is that the 2 channel amp can be bridged. And a later upgrade then could allow me to run two JC5s as monoblocks. Problem is..... the JC5s are rated bridged into 8 ohms and my Ulfs are 4 ohms. I've been meaning to contact Eric of Tekton and ask whether the 4 ohm variation of the cabinets and 8 ohm version is a matter of rewiring. This will impact my final decision in an upgrade path in the future. The Coda.... I just dunno about going down in power rather than upwards. The fidelity has to be a clear cut winner... though... I've looked into the tube amp path but like you I also utilize my system for theater. And I DO enjoy high SPL blitz now and then. For most sane listening levels I operate the Parasound w/in its class A limits of under 7 watts. Though without the 4-10s running and a +10db house curve 20 to 30 watts from tube power isn't going to be enough during my normal play volume while enjoying cinema low frequencies. Especially 9ft to MLP. To achieve 115 in the sub frequency at DTS/THX reference levels 64 watts RMS are necessary: 99db 2 watts [2.83 volts into 4ohms] 102db 4 watts 105db 8 watts 108db 16 watts 111db 32 watts 115db 64watts Amp wise I do need a design that is synergistic w/ the Tektons in fidelity while taking advantage of their 1000 watt power handling. Not asking much am I?! Thanks for the wealth of info and feedback! Question for you all, a few of you have mentioned bridge mode. What does thT actually mean and is it something I should be looking to do? |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Aug 15, 2021 12:40:00 GMT -5
Hey there omuracada, Appreciate your feedback! I haven't any experience w/ the Emotiva HC-1 monoblocks. Will say though, coming from the DR3 to the A31 I did notice a gain reduction w/ the A31 too. Didn't surprise me though because the DR3 is rated 600 watts x 3 into 4 ohms while the A31 400 watts x 3 into 4 ohms. What won me over from the DR3 to the A31 was two things. One, the Tektons are very critical and expose variations in uptstream components. The fidelity was nowhere near the A31 so this was in Parasound's favor. Interesting you stated the Parasound was warmer - I agree, and noted at the time that the Emotiva XPA 5 and DR3 were both more "harsher". I probably would of went earlier generation Emotivas as I'm sure the once back then class A-A/B design difference between Parasound might be less. But I wasn't going to purchase an used amp since such designs are no longer offered by Emotiva. I wonder whether the harshness I heard from the Emotivas were at a certain frequency or around 100hz where the impedance was down to 2.3 ohms? Likewise, I've read reviews of the XPA Gen 3 amps and reviewers that performed tests measured distortion in the midrange and offered an explanation of other reviewers which claimed the Emotiva was harsher by this measurable distortion. Second, the difference in maintaining absolute polarity. I run a mixed system mains running from the A31 and subs amplified. At the time I was mixing between XLR and RCA and well decided I did not like Emotiva's final design decision for the balanced XLR pin configuration. What actually ticked me off the most was the slippery explanation of how maintaining absolute polarity doesn't matter as signals are often changed numerous times w/in the amp. Again, this was well over a year ago before I had the option of running REW testing for phase/polarity etc. The guess work had me throwing my hands up in the air in frustration especially when phase issues were not so simple as to whether speakers were 180 degrees out of phase. Anyhoot, glad your monoblocks are working out for you. I haven't any plans to upgrade in the near future but I do have my eyes open on two amps at the moment: Parasound JC5 and Coda: hometheaterreview.com/coda-technologies-continuum-no-8-stereo-amplifier/What I like about the JC5 is that the 2 channel amp can be bridged. And a later upgrade then could allow me to run two JC5s as monoblocks. Problem is..... the JC5s are rated bridged into 8 ohms and my Ulfs are 4 ohms. I've been meaning to contact Eric of Tekton and ask whether the 4 ohm variation of the cabinets and 8 ohm version is a matter of rewiring. This will impact my final decision in an upgrade path in the future. The Coda.... I just dunno about going down in power rather than upwards. The fidelity has to be a clear cut winner... though... I've looked into the tube amp path but like you I also utilize my system for theater. And I DO enjoy high SPL blitz now and then. For most sane listening levels I operate the Parasound w/in its class A limits of under 7 watts. Though without the 4-10s running and a +10db house curve 20 to 30 watts from tube power isn't going to be enough during my normal play volume while enjoying cinema low frequencies. Especially 9ft to MLP. To achieve 115 in the sub frequency at DTS/THX reference levels 64 watts RMS are necessary: 99db 2 watts [2.83 volts into 4ohms] 102db 4 watts 105db 8 watts 108db 16 watts 111db 32 watts 115db 64watts Amp wise I do need a design that is synergistic w/ the Tektons in fidelity while taking advantage of their 1000 watt power handling. Not asking much am I?! Thanks for the wealth of info and feedback! Question for you all, a few of you have mentioned bridge mode. What does thT actually mean and is it something I should be looking to do? Simply put a bridgeable 2 channel amp such as the Parasound Halo JC5 allows inverting one of the two channels. One lead or positive is used from one channel and the other negative lead is used by the other channel. The 2 channel amp then acts as a monoblock. The JC5 then allows for 1200 watts rms [180 amps] into a single bridged or monoblock channel. I'd like to know whether the "Class A" [12-watts-per-channel pure class A power] operation of a bridged JC5 also doubles into 24 watts pure Class A power but I dunno: www.parasound.com/jc5.php |
|
|
|
Post by DavidR on Aug 15, 2021 12:52:05 GMT -5
But the CJ5 in bridged mode can only handle an 8 ohm load. Says so right on the back of the amp. So 4 ohm speakers are out.
Most likely it doubles.
And all this time I thought a CJ5 was a Jeep model.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Aug 15, 2021 12:56:17 GMT -5
But the CJ5 in bridged mode can only handle an 8 ohm load. Says so right on the back of the amp. So 4 ohm speakers are out. Most likely it doubles. And all this time I thought a CJ5 was a Jeep model. I addressed this bro in my response. I'm inquiring w/ Tekton at the moment as to whether the internal speakers can be rewired utilizing the same speakers for 8 ohm cabinets. This will ultimately decide my upgrade path. Mind you the Tektons are actually 2.3 ohms at around 100hz. At that point I'm speculating that there's a hand off from 2 12" subs to 4 7" drivers..... All of which are 4 ohm speakers in each 21 driver cabinet. |
|
|
|
Post by DavidR on Aug 15, 2021 13:53:48 GMT -5
The voice coil on the drivers determines the impedance. They should have designed a 'tank' circuit to alleviate that big dip. That's a huge reach from 12" woofer to small tweeter/mid.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Aug 15, 2021 14:12:10 GMT -5
The voice coil on the drivers determines the impedance. They should have designed a 'tank' circuit to alleviate that big dip. That's a huge reach from 12" woofer to small tweeter/mid. There're four 7" drivers bridging between dual 12" subs and the MTM array. The MTM array rolls on around 375hz. All 21 drivers in each cabinet are 4 ohms each. At around 100hz I suspect 2 4ohm subs and 4 4ohm 7" drivers are all overlapping. |
|
|
|
Post by donh50 on Aug 17, 2021 20:46:30 GMT -5
Aside: Bridging an amplifier should double the voltage swing and thus quadruple the power (power goes as voltage squared), assuming the amp's output transistors, power supply, thermal system, and all can handle it. But it also effectively halves the load impedance seen by the amp, so a 4-ohm speaker looks like a 2-ohm load to a bridged amplifier. It is typical for the minimum impedance an amp is rated to handle to be doubled in bridged mode.
FWIWFM - Don
|
|
