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Harbeth Monitor 30 domestic specific

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  • #31
    Re: Harbeth Monitor 30 domestic specific

    Hi

    I have a Monitor 30 question.

    Assuming good setup relative to the room, what is the soundstage presentation of these speakers, when listening nearfield?

    Does the front of the soundstage start:

    1) well in front of the speakers?

    or

    2) At the splane of the speakers?

    I am asking because I have been doing a lot of system tweaking (new racks, power conditioning, equipment footers etc) and the soundstage presentation has changed markedly.

    I realize that I have lost sight regarding what the baseline shoould be for these speakers.

    Thanks so much,

    Jay

    Comment


    • #32
      Re: Harbeth Monitor 30 domestic specific

      Quick answer: I personally detest a sound stage that bows out towards the listener; it is so unnatural. So, the M30 is as your No.2) in the plane of the speakers.

      More here: http://www.harbeth.co.uk/designersno...r7-1/index.php
      Alan A. Shaw
      Designer, owner
      Harbeth Audio UK

      Comment


      • #33
        Re: Quad II-Forty with Monitor 30

        I used to use Old Quad II's set to 8 ohm with a Croft pre to drive my Rogers LS5/9 (very near to the 30 Harbeth)
        The sound was wonderful , lacked nothing except for deep bass which I don't need/like.
        tim

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        • #34
          Re: A centre channel for Monitor 30

          Hi,
          which center channel do yo suggest for Monitor 30?
          have someone experienced something about it?

          Comment


          • #35
            Re: Harbeth Monitor 30 domestic specific

            Is anyone using time alighted speaker stands. I listen in the nearfield and I was wondering if anyone found the leaninfg the speaker back to time aline the vice coils had a positive effect

            Comment


            • #36
              Re: Harbeth Monitor 30 domestic specific

              I regret that you have made a fatal assumption. I have already time aligned the woofer and tweeter in the crososver on the listening axis. If you tip the speakers backwards you will in fact un-align them.

              The not-so humble "crossover" has several functions in a quality speaker:

              1. Adjust the relative levels of the woofer and tweeter (tweeters are usually more sensitive and need to be turned down to match the woofer).

              2. Adjust for the 'baffle step'.

              3. Filter action at the top end of the woofer/mid and bottom end of the tweeter.

              4. Shelving, or other frequency selective control or compensation.

              5. Control of dispersion of sound on and off axis.

              6. Time alignment. Note: With conventional woofers and tweeters that are spaced apart on the baffle (in contract to coaxial type drivers) it is only possible to optimise the time alignment at one point in space - logically on the listening axis (or indeed anywhere else you want, but only at one point in space).

              and it has to perform all of these tasks simultaneously, without degrading the sound quality and most especially, without making the speaker difficult to drive. It is a complex multi-dimensional problem which appeals to me intellectually and I take considerable personal pride in doing the job properly.
              Alan A. Shaw
              Designer, owner
              Harbeth Audio UK

              Comment


              • #37
                Re: Harbeth Monitor 30 domestic specific

                Thank you for that information, if it is in the literature I missed it. I am using old target stands that were for the Proac tablettes. I used my LS3/5a stand orginally but the spiked tablette stands increased the focus. These stands are much heavier than the Rogers stands. JoeH

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                • #38
                  Amplifier for Monitor 30

                  I have already posted a message with the same question but in he wrong topic.
                  I have for the moment a cambridge audio (A75-C75) old brand.
                  I love the sound but I have got a problem with bass. I think the bass is not well drived.
                  I would like to know what kind of amplifier could sound like my old A75-C75 but with bass mor drived (not necessary with mor bass).
                  In france, my amplifier is not known.
                  I know that naim and sugden are named to drive Harbteth, but what kind of models are suitable for the monitor 30.

                  Thank for your help.

                  Comment


                  • #39
                    Re: Harbeth Monitor 30 domestic specific

                    Originally posted by A.S.
                    I regret that you have made a fatal assumption. I have already time aligned the woofer and tweeter in the crososver on the listening axis. If you tip the speakers backwards you will in fact un-align them.
                    What is the listening axis for the M30?

                    Comment


                    • #40
                      Re: Harbeth Monitor 30 domestic specific

                      It's on or close to the tweeter axis.
                      Alan A. Shaw
                      Designer, owner
                      Harbeth Audio UK

                      Comment


                      • #41
                        Re: Harbeth Monitor 30 domestic specific

                        Thanks Alan.
                        Would measurements done for time alignment have been taken with the microphone on axis and about one meter from the tweeter then?

                        Comment


                        • #42
                          Re: Amplifier for Monitor 30

                          I'm interested too...
                          anyway, in Italy Monitor 30 + Exposure Classic XXXV is a good match .....but same distributor !!!!

                          regards,
                          David

                          Comment


                          • #43
                            Re: Amplifier for Monitor 30

                            what about McIntosh 6300 int. for M30?

                            Comment


                            • #44
                              Re: Harbeth Monitor 30 domestic specific

                              It seems possible to me that time alignment is a bit overrated. The effect of moving one's head up and down on the frequency response of the speaker in the room may be greater than the effect of the time relationship of the drivers. If time alignment does matter, then one needs to know not only the axis of alignment, but also the distance at which the drivers are aligned. Take the M30 as an example. Let's assume the two drivers are about .18 meters apart, and that they are aligned when the ear or microphone is one meter away from the tweeter, directly on axis. By my rough calculations, if one moves from one to two meters from the speaker, then the drivers will have the same time alignment if the mic is moved .09 meter ABOVE the axis of the tweeter. As we move another meter, we again need to add another .09 meter to the height of the listener or mic to maintain the same time alignment. So, I would suggest listening and measuring at different heights to get the optimum for your listening position. Do not rely entirely on any simple rule.

                              Comment


                              • #45
                                Re: Harbeth Monitor 30 domestic specific

                                Monitor 30 question for A.S or others:

                                1) Are M30 speakers good candidates for low-level listening or are there better Harbetrhs for that?

                                Some speakers need to be cranked-up to preserve involvement and detail--so I am just wondering. I want to try and listen at lower levels (70db) with a sound meeter at my listening position 6 feet away and I am wondering if my M30's are suited for this.

                                2) When people say listening On-Axis, does that mean the speakers are toed-in so that you don't see the inner side panel?

                                Thanks in advance.

                                Jay

                                Comment

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