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Pass Labs X260.8 monos or X350.8 with Magnepan 3.7's

2.248.148.190

Hasse

Has anyone heard the 260's or the 350 on Magnepan 3.7/3.7i?
What are your thoughts?

Follow Ups:

RE: Pass Labs X260.8 monos or X350.8 with Magnepan 3.7's - tortjohn@yahoo.com 16:57:43 11/14/21 (0)
Either will have plenty of power I'm using 250.8 with 3.7i and the amp seldom leaves class A.
Joto
Save some money for subwoofers - GreatSound 14:37:33 11/11/21 (4)
The 3.7/3.7i Magnepans do not go below 40 Hz.
They need subwoofers!
Unlike the previous 3 series Magnepans that are flat to 30 Hz in good rooms.

Edits: 11/11/21
- RE: "Unlike the previous 3 series Magnepans that are flat to 30 Hz in good rooms" ... - andyr 03:44:50 11/12/21 (3)
  Not sure I can agree with you there, GS. :-((
  
  My IIIas were good to about 35Hz - and by " good to " ... I don't mean flat ... simply hearable.
  
  Andy
  - RE: "Unlike the previous 3 series Magnepans that are flat to 30 Hz in good rooms" ... - GreatSound 11:53:45 11/12/21 (2)
    Your MG IIIas were not stock! Different frame material, and not "tuned" by Magnepan.
    How much listening have you done with the "stock version" in several different rooms?
    The MGIIIa has the largest bass area of any of the 3 series, hence lower bass.
    Try the MGIIIA in the right size room for lowest bass.
    Also, the power amp choice effects the low end too.
    Some power amp-magnepan combinations go lower than others.
    
    Edits: 11/12/21 11/12/21
    - RE: "Unlike the previous 3 series Magnepans that are flat to 30 Hz in good rooms" ... - andyr 17:20:43 11/13/21 (1)
      You said:
      
      1. The MGIIIa has the largest bass area of any of the 3 series, hence lower bass.
      
      Agreed!
      
      2. Try the MGIIIA in the right size room for lowest bass.
      
      Please give me what you define as the dimensions of a "right sized room".
      
      3. Also, the power amp choice effects the low end too.
      
      Some power amp-magnepan combinations go lower than others.
      
      Agreed. :-))
      
      All I am questioning ... is your statement " flat to 30 Hz ".
      
      Andy
      - RE: "Unlike the previous 3 series Magnepans that are flat to 30 Hz in good rooms" ... - GreatSound 13:37:21 11/14/21 (0)
        
        In Reply to: RE: "Unlike the previous 3 series Magnepans that are flat to 30 Hz in good rooms" ... posted by andyr on November 13, 2021 at 17:20:43
        
        It is just my experience owning and using the MG IIIIa since 1987 with many amps in many rooms.
        The low end response quoted by Magnepan is "Typical' in an average room.
        It can go lower in certain rooms, and after the speakers age.
        You never had the same experience as me. Your IIIa was a dyi, not stock, and gave different results.
        Quit arguing, we have different experiences, that is all.
        
        Edits: 11/14/21 11/14/21
A more affordable choice - GreatSound 20:21:10 11/08/21 (0)
The parasound A 21+
A John curl design!
500 WPC at 4 ohms.
- https://www.audioadvisor.com/prodinfo.asp?number=PAHA21P (Open in New Window)
Edits: 11/08/21 11/11/21
RE: Pass Labs X260.8 monos or X350.8 with Magnepan 3.7's - timm 16:59:35 11/08/21 (0)
It would be interesting to hear if anyone has experience on this. Would be interesting to hear about the XA series as well I have not heard these but I would think the monos would be the choice.
RE: Pass Labs X260.8 monos or X350.8 with Magnepan 3.7's - SteveJewels 16:46:50 11/08/21 (6)
Into 4 ohms the Pass Lab amps put out twice as many watts, 520 W and 700 W respectively.

I am using an X250.5 with T-IVa's. It seems to be adequate.

I have been thinking about getting an X150.5 and biamping just to see how it sounds.
- RE: Pass Labs X260.8 monos or X350.8 with Magnepan 3.7's - josh358 11:16:50 11/11/21 (0)
  In my experience, you'll be blown away if you biamp the IVA's. It takes them to a new level.
  
  I think this has to do with the fact that it has better control of the drivers. With the XO, the drivers aren't electrically damped outside of their passbands.
- RE: "and biamping just to see how it sounds" ... - andyr 22:53:47 11/08/21 (4)
  If you intend to replace the external bass LP / mid HP XO with an active XO ... then I suggest it will sound pretty spectacular! :-))
  
  Andy
  - RE: "and biamping just to see how it sounds" ... - SteveJewels 02:16:10 11/09/21 (1)
    I have a Pass DIY Biamp 6-24 kit to build for crossover duties. I already built a new passive crossover the the mid to tweeter.
    - RE: "and biamping just to see how it sounds" ... - Roger Gustavsson 02:50:21 11/09/21 (0)
      SteveJewels wrote: " I already built a new passive crossover the the mid to tweeter."
      
      Series or parallel mid to tweeter crossover? Are you willing to show us?
  - RE: "and biamping just to see how it sounds" ... - Roger Gustavsson 00:10:21 11/09/21 (1)
    Andy, there is no external crossover, it is all internal in the 3.7/3.7i.
    - RE: "Aah, yes - so it is! So biamping is not possible" ... - andyr 00:12:56 11/09/21 (0)
      unless you bypass the internal passive 1st order XO.
      
      Andy
RE: Interesting question - I wonder how many people have tried them with 3.7s or 20.7s? ... - andyr 16:27:34 11/08/21 (0)
At 350wpc - as against 260wpc for X260.8 monoblocs - surely the X350.8 would be the one to go for?

Andy

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