ying and yang--Lamm ML3 and darTZeel 458

Mike Lavigne said:

i'm tired after staying up very late last night listening, and then early this morning too. but; came home tonight and (1) tore my attic apart looking for my 8 meter long generic XLR I.C.'s (Orgami Gold) but could not find it, and (2) moved the ML3 power supplies back near the front wall to see if that lowers the noise (it did a little).

i'll order another set of the inexpensive XLR's to see if it lowers the noise. moving my RCA's around seems to lower the noise a little, so that likely is most of the issue. but it's not intruding on the music. still; it bugs me.

here is a couple of pics of the ML3's fired up, with the power supplies in their new spots.

Click to expand...

Mike Lavigne said:

i'm tired after staying up very late last night listening, and then early this morning too. but; came home tonight and (1) tore my attic apart looking for my 8 meter long generic XLR I.C.'s (Orgami Gold) but could not find it, and (2) moved the ML3 power supplies back near the front wall to see if that lowers the noise (it did a little).

i'll order another set of the inexpensive XLR's to see if it lowers the noise. moving my RCA's around seems to lower the noise a little, so that likely is most of the issue. but it's not intruding on the music. still; it bugs me.

here is a couple of pics of the ML3's fired up, with the power supplies in their new spots.

View attachment 38826

View attachment 38827

Click to expand...

Mike Lavigne said:

I don't pretend to know what the noise is. I would call it a hum, likely a 60hz hum. noticeably louder from the left channel, but still audible from the listening position from the right channel. I've tried the following things to reduce the hum.

--removed all grounding from the ML3's and all sources---no change.
--switched interconnects side to side. still louder in the left side.
--turned off lights, turned off digital, turned off all three active isolation devices, turned off bass tower amps, unplugged bass tower amps---no change.
--when I move the left channel interconnect around I do get a small variance in the hum.

--I have not tried cheater plugs on the power cords, wanted your approval to try that first.
--my Equitech isolation transformer does have balanced power. so I removed the amplifier power cords from the Equi=tech outlets and tried the 'dirty' direct outlets next to the Equi=tech outlets---noise 50% worse.

Click to expand...

andromedaaudio said:

Tube power Amps are a bit noisy , at least se ones.
I think pre Amps are the most important thing to get the magic , so maybe the lamm pre drivng the darts Will be the solution.
No noise power and tube magic

Click to expand...

Mike Lavigne said:

I don't pretend to know what the noise is. I would call it a hum, likely a 60hz hum. noticeably louder from the left channel, but still audible from the listening position from the right channel. I've tried the following things to reduce the hum.

--removed all grounding from the ML3's and all sources---no change.
--switched interconnects side to side. still louder in the left side.
--turned off lights, turned off digital, turned off all three active isolation devices, turned off bass tower amps, unplugged bass tower amps---no change.
--when I move the left channel interconnect around I do get a small variance in the hum.
--note--dart preamp is battery powered. and I've only used it in battery mode with the ML3's.

--I have not tried cheater plugs on the power cords, wanted your approval to try that first.
--my Equitech isolation transformer does have balanced power. so I removed the amplifier power cords from the Equi=tech outlets and tried the 'dirty' direct outlets next to the Equi=tech outlets---noise 50% worse.



thanks Alan. I am enjoying your lammies.

if it takes acquiring the 4 box dual manual volume control LL1.1 to remove this noise from the ML3's, either I will move on from the ML3's or learn to live with the noise.

the dart pre stays, and not interested in integrating 4 more boxes into my system. that is my viewpoint right here, right now. I've learned never to say never.

I know you are trying to help and appreciate your speaking up. you joined a chorus of LL1.1 recommenders.....all well intended.

Click to expand...

Mike Lavigne said:

I don't pretend to know what the noise is. I would call it a hum, likely a 60hz hum. noticeably louder from the left channel, but still audible from the listening position from the right channel. I've tried the following things to reduce the hum.

--removed all grounding from the ML3's and all sources---no change.
--switched interconnects side to side. still louder in the left side.
--turned off lights, turned off digital, turned off all three active isolation devices, turned off bass tower amps, unplugged bass tower amps---no change.
--when I move the left channel interconnect around I do get a small variance in the hum.
--note--dart preamp is battery powered. and I've only used it in battery mode with the ML3's.

--I have not tried cheater plugs on the power cords, wanted your approval to try that first.
--my Equitech isolation transformer does have balanced power. so I removed the amplifier power cords from the Equi=tech outlets and tried the 'dirty' direct outlets next to the Equi=tech outlets---noise 50% worse.

Click to expand...

morricab said:

I don't know what SETs you have experience with but the ones I have had in my system from KR Audio, Ayon and now Aries Cerat are dead quiet even into 98db/watt horns I use.

Click to expand...

andromedaaudio said:

Im not nescesarily talking about hum in the sense of noise coming through the tweeter , but transformer hum which is a kinda 50 HZ ( or 60 Hz ) moving of the windings in the transformer .
The higher the output in the ( SE )tube power amp the bigger transformers the more noise, it doesnt become louder with increase in volume .
The Zanden 7000 integrated 300 B set didnt have much transformer hum , small wattage small transformers .
The Lamm probably not much at around 30 watts .
Besides that there is the tube noise / hum which increases with volume coming through the tweeter
My Cat hums the Graaf GM 200 more so , although not SET , transformer hum mostly .

Click to expand...

andromedaaudio said:

Sure thats what i wrote , hum at speakerterminal never heard of that , sorry

Click to expand...

Mike Lavigne said:

I don't pretend to know what the noise is. I would call it a hum, likely a 60hz hum. noticeably louder from the left channel, but still audible from the listening position from the right channel. I've tried the following things to reduce the hum.

--removed all grounding from the ML3's and all sources---no change.
--switched interconnects side to side. still louder in the left side.
--turned off lights, turned off digital, turned off all three active isolation devices, turned off bass tower amps, unplugged bass tower amps---no change.
--when I move the left channel interconnect around I do get a small variance in the hum.
--note--dart preamp is battery powered. and I've only used it in battery mode with the ML3's.

--I have not tried cheater plugs on the power cords, wanted your approval to try that first.
--my Equitech isolation transformer does have balanced power. so I removed the amplifier power cords from the Equi=tech outlets and tried the 'dirty' direct outlets next to the Equi=tech outlets---noise 50% worse.



thanks Alan. I am enjoying your lammies.

if it takes acquiring the 4 box dual manual volume control LL1.1 to remove this noise from the ML3's, either I will move on from the ML3's or learn to live with the noise.

the dart pre stays, and not interested in integrating 4 more boxes into my system. that is my viewpoint right here, right now. I've learned never to say never.

I know you are trying to help and appreciate your speaking up. you joined a chorus of LL1.1 recommenders.....all well intended.

Click to expand...

andromedaaudio said:

Sure thats what i wrote , hum at speakerterminal never heard of that , sorry

Click to expand...