Recent Posts

1

Mainline / Re: Buzz on left channel

« Last post by Tabaia on Yesterday at 05:15:11 PM »

Hello Again,
Still trying to problem solve the buzzing.
Have again and quite meticulously while the amp is on and with headphones  gone through with a bamboo skewer and probe'd all wiring, listening for any changes but could not detect anything.

Also gently wiggled the transformers. Agin could not detect anything.

Kindly advise of the next step to take.

Many thanks

2

Subette Subwoofer / Re: Dumb Question: Connecting Stereomour II + 2 Sublimes + 2 Pipettes + 2 Subettes

« Last post by Doc B. on Yesterday at 12:26:15 PM »

The load from the Sublime amp on the Stereomour output is so much lighter than that from the Pipette speakers that it changes the output loading on the Stereomour very little. So you can put the Pipette load and the Sublime load in parallel like this. I brought the exact system you describe home from our studio last week. It's sitting here in the dining room, fed by an Echo Dot. Works quite nicely.

3

Subette Subwoofer / Re: Dumb Question: Connecting Stereomour II + 2 Sublimes + 2 Pipettes + 2 Subettes

« Last post by rsmiii on Yesterday at 12:03:27 PM »

Thank you; I had to wrap my head around an amplifier's speaker outputs connecting to external main speakers and concurrently connecting to another amplifier via that second amplifier's RCA input(s).

4

Mainline / Re: Mainline - Balanced and Unbalanced expected behavior

« Last post by Paul Birkeland on Yesterday at 11:46:12 AM »

The audio ground moves from one end of the output transformer secondary to the center tap of the output transformer.  There isn't a way to have the 4 pin jack be a balanced output and to have the 1/4" jack doing what it's supposed to be doing.  If you want to listen out of both jacks, I would set the amp to unbalanced output, which will give you the full TRS signal on the XLR jack and the proper output on the TRS jack.

The schematic in the manual shows how these switches are laid out and how they connect.

5

Mainline / Re: Mainline - Balanced and Unbalanced expected behavior

« Last post by e2o on Yesterday at 10:11:09 AM »

That is totally normal.  I also believe that the sound out of the TRS isn't going to be so great with the switch set to balanced.

Thank you, Paul! Is there a description somewhere of what exactly happens when going from Balanced to Unbalanced? I'm curious as to a few things:
1) Is anything happening to the XLR when flipping this switch?
2) Is Unbalanced only using one side, the other side sitting idle?
3) If I do want a listening session out of both (unlikely), would it be better in Bal or Unbal mode?
4) Curious - why have the Bal/Unbal toggle? Why not have Unbal to TRS and Bal to XLR?

thanks again!

\ eric

6

Mainline / Re: Mainline - Balanced and Unbalanced expected behavior

« Last post by Paul Birkeland on Yesterday at 10:02:53 AM »

That is totally normal.  I also believe that the sound out of the TRS isn't going to be so great with the switch set to balanced.

7

Subette Subwoofer / Re: Dumb Question: Connecting Stereomour II + 2 Sublimes + 2 Pipettes + 2 Subettes

« Last post by Doc B. on Yesterday at 09:53:56 AM »

Stereomour II to Pipettes uses standard spade lug style speaker cables. Same for Sublime to Subette. To connect the Stereomour II to the Sublime input jacks you need an RCA to dual banana plug cable. The banana plug end will plug into the banana jacks on the tops of the speaker binding posts of the StereomourII.  The RCA end plugs into either RCA jack on the Sublime. Here’s a link to a suitable cable.

https://a.co/d/9Kku1ex

8

Mainline / Mainline - Balanced and Unbalanced expected behavior

« Last post by e2o on Yesterday at 08:58:22 AM »

Hello!

Finished my Mainline about a week ago, and I'm loving it! I had been using only balanced on XLR until the other day when I tried outputting to both XLR and TRS jacks simultaneously. I wasn't really thinking (my solid state amp has two outputs and I do it all the time.) Well, it worked out of both. It works out of both whether the output switch is set to Bal or Unbal. When I'm listening with just XLR, flipping Bal to Unbal appears to have no effect. When listening on TRS, flipping from Unbal to Bal results in lower volume, but they both work.

Is this expected behavior?

Photos of the wiring on Imgur here: https://imgur.com/a/RQA3Fy9

Thanks!

\ eric

9

Subette Subwoofer / Dumb Question: Connecting Stereomour II + 2 Sublimes + 2 Pipettes + 2 Subettes

« Last post by rsmiii on Yesterday at 08:20:22 AM »

Please, if one wishes to connect a Stereomour II amplifier to two (2) Pipettes and two (2) Subettes, with two (2) Sublime amplifiers –

What are the interconnects required, and what is the connection path?

10

Technical topics / Moreplay output impedance

« Last post by Altecboy on Yesterday at 05:07:42 AM »

I like the remote control on my Schiit Freya S preamp.  It sounds best with the solid state buffer actuated.  I'd like to add a tube output stage and am considering the Moreplay.  My concern is the output impedance.  It would look at my Monamours and a 10K load from my minidsp subwoofer crossover.

Will the Moreplay drive this?
thanks.