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FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

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  • #31
    Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

    PM sent on MiniDSP.

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    • #32
      Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

      Was there a build thread on the coffee table sub? I like it.

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      • #33
        Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

        Nope - I bought it locally from a really nice speaker builder. It had a modest stamped-frame 15" in it which I replaced with the Titanic Mk. 3 which transformed it entirely. Very capable!

        Cheers,
        Tal

        Originally posted by philthien View Post
        Was there a build thread on the coffee table sub? I like it.

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        • #34
          Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

          MiniDSP 4x10HD sold!

          -Tal

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          • #35
            Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

            Is the coffee table vented or sealed? Tuning? Enclosure volume (approx)? Downfiring?

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            • #36
              Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

              Just took some measurements, then ran it through Unibox.

              Enclosure is (roughly) 141 liters. Tuning is roughly 32 Hz., and it's a 4" port, so it shouldn't chuff much. Unibox puts it at an 104db @ 500 watts which also HAPPENS to be EXACTLY the 21mm xmax on the driver. So 500 watts is PERFECT for this subwoofer, for a sealed application. As a subwoofer - I'd only run it sealed. If it's to DJ house parties, then ported would make a LOT of thump - Unibox puts it at 117db @ 30 Hz., and that's NOWHERE near xmax.

              Again - I'd only run it sealed, as the tuning is too high, IMO. It originally had a VERY humble Goldwood 15" woofer in there, but the enclosure is heavy and fairly well built, so the Titanic I put in there made sense. It is indeed downfiring. Here is a fairly poor mobile phone picture with my 12" sub in the background for scale:

              Click image for larger version

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              Cheers,
              Tal



              Originally posted by badman View Post
              Is the coffee table vented or sealed? Tuning? Enclosure volume (approx)? Downfiring?

              Comment


              • #37
                Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

                Ummm... I have little experience with ported enclosures. This thing would be chuff city anywhere near full volume - definitely could use a 6" port, but there's no room for the additional length.

                Originally posted by taloyd View Post
                and it's a 4" port, so it shouldn't chuff much.

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                • #38
                  Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

                  Coffee table sub is tentatively sold locally; thanks everyone!

                  -Tal

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                  • #39
                    Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

                    Added things, dropped prices, removed sold stuff.

                    Speakers are local pickup only; all amplifiers can be shipped, especially the sweet Stewart jobbies; they're nice!

                    -Tal

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                    • #40
                      Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

                      Hello,

                      Bought a nice heavy Denon receiver for its 7 channel amplifier to experiment with making passive speakers active via MiniDSP. Then found a really nice Adcom 7 channel amplifier, rendering this Denon receiver superfluous - like so many other things in my life.

                      Pertinent details:
                      Denon AVR-1908
                      $55
                      no remote (has an EXT. IN button on front so you don't need the remote)
                      7 x 90W RMS @ 8 ohms @ 0.08% THD
                      25 lbs. !!!

                      http://assets.denon.com/documentmast...8-om-e_109.pdf

                      Local pickup in Los Angeles only as this is heavy and cheap - a bad combination for shipping.

                      Cheers,
                      Tal

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                      • #41
                        Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

                        More stuff! That I don't need! Because I got a MiniDSP!

                        $45 - Rane SAC-22 2.5 way crossover
                        Used for rapid prototyping of crossover points without needing a computer... of course - I've since transitioned to a MiniDSP
                        0.5 way output is great to ADD a summed mono crossover while keeping a discrete 2 way crossover for the speakers themselves.
                        Crossover f between 100 Hz. and 3.15 kHz.
                        4th order Linkwitz-Riley
                        mono summed subwoofer output fixed at 100 Hz.
                        Typical great Rane build quality.
                        XLR inputs/outputs. Have XLR --> RCA adapters that I can throw in.

                        http://www.rane.com/pdf/old/sac22man03.pdf
                        http://www.performanceaudio.com/item/rane-sac-22/3119/

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                        • #42
                          Re: FS in Los Angeles: subwoofer, subwoofer cabinet, oscilliscope, KEF bookshelfs...

                          Updated first/original post: sold the James external subwoofer amplifier to a local buyer. Tannoy IWSA-500 which is essentially the same amp still available, as is everything else.

                          Happy 2016!

                          -Tal

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                          • #43
                            Added: 2 x NHT W1 dual 12" subwoofers!

                            Changing my subwoofer setup (for the umpteenth time) to something bulkier and less subtle, though very slightly higher performance (hello diminishing returns!)... so these two are up for sale.

                            Very well engineered (Ken Kantor for the engineering for NHT), with a sealed-box design for very tight bass reproduction. Requires EQ, and is flat to 26 Hz. with EQ. Many modern home theater receivers have built in EQ (Audyssey, etc.) so that should take care of it.

                            The NHT are fairly efficient, and so don't require a lot of power (250 watts RMS is recommended for each subwoofer). I have a Tannoy IWSA500 that would probably be perfect for the pair - looking for $195 firm for that, but can work out a package deal.


                            Here are the specs for the W1:
                            System Type: Acoustic suspension dual woofer subwoofer
                            Drivers: 2 - 12" aluminum cone drivers (high excursion)
                            Peak Acoustic Output: @1M - 112dB SPL using A1 and X1
                            Frequency Response: 26Hz - 140Hz +/- 3dB using A1 and X1
                            Input Connectors: 5-way binding posts
                            Dimensions: 22" H x 12.5" W x 16.65" D
                            Weight: 71 lbs
                            Finish: Anthracite matte lacquer


                            Sub looks smaller than it is - the rounded corners and dark grey color really help. Definitely looks nicer than what I'm replacing them with.

                            $165 each, $275 for the pair. Yes, the pair is a better deal.

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                            • #44
                              Re: Added: 2 x NHT W1 dual 12" subwoofers!

                              Pretty cool subs- perfect for someone with good standmounts currently but needing to zoot up the bass. I'd be inclined to snag these to add into my rig for more of a swarm setup but I think I've reached critical mass.

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                              • #45
                                Re: Added: 2 x NHT W1 dual 12" subwoofers!

                                Originally posted by badman View Post
                                Pretty cool subs- perfect for someone with good standmounts currently but needing to zoot up the bass. I'd be inclined to snag these to add into my rig for more of a swarm setup but I think I've reached critical mass.
                                Ha! I know where you're at - that's why I'm selling subs and not buying them!

                                Cheers,
                                Tal

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