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  1. Edward J M

    Speaker Wattage to Receiver Ration

    ^ +1. It's far easier to damage a speaker with an underpowered AVR driven into clipping than a powerful external amp which is always operating cleanly and linearly. Every toasted tweeter I've ever seen has resulted from a ham-fisted user cranking a cheap and underpowered AVR into clipping...
  2. Edward J M

    New SVS Ultra speakers now shipping

    Hi Dave - Good to hear from you! SVS is always developing new products - so I wouldn't worry about the absence of the entry/mid level speakers in our product line-up worry you to too long. The M-series is a great speaker line and like you I still greatly enjoy my full 7 channel set in the...
  3. Edward J M

    New SVS Ultra speakers now shipping

    Yes, the Ultra series is a clean-sheet design from Mark Mason (of PSB fame). Acoustic Research (back in the day) was fond of the dual opposed woofer array. The benefits are myriad: there is mechanical force cancellation, which reduces even-order harmonic distortion in the drivers and also...
  4. Edward J M

    New SVS Ultra speakers now shipping

    Hi guys - Glad new owners are loving the Ultra speakers! I have Beck Guero on DVD-A and agree it's a must-have demo for high-end systems. Charlie - I'm glad you are loving the XPA-3 - I knew it would tame the slightly edgy/harsh sound from your Pioneer AVR at high playback levels and it really...
  5. Edward J M

    I just got my PB-12 Plus today and...

    If you want to plot the FR with sine waves and a spreadsheet, please contact SVS Tech Support; I'll provide you with the latest version we've created, including spreadsheet with correction factors, a link to a freeware test tone generator, and detailed guidance on how to use the onboard PEQ (if...
  6. Edward J M

    Please HELP what is the best subwoofer???

    The Plus/2 in the 20 Hz tune and the PB13U have similar max output capability from 30-80 Hz. Below 30 Hz, the PB13U starts to assert an advantage, amounting to a few dB at 20 Hz. While the two subs can generate similar max in-room SPL, the PB13U is a better subwoofer, having a flatter FR...
  7. Edward J M

    Picked up an SVS PB 10 NSD

    Hi Paul: With an auto-cal system, setting the sub to -5 after auto-calibration won't work. The AVR set the sub level to +9.5 because the gain level was set too low on the SVS, and it was trying to compensate for that. If you want the AVR subwoofer level to end-up around -5 after auto-cal...
  8. Edward J M

    Picked up an SVS PB 10 NSD

    Hi Ryan: While there is little empirical data to support subwoofer break-in, many customers do report an improvement in the mid/upper bass quality after running the subwoofer hard for a few hours. Give it a try and report back with your findings. Duals will also (obviously) help with...
  9. Edward J M

    SVS: PB12-Plus/2, PB12-Plus, or wait for the new PC-Ultra or PB13-Ultra?

    Hi Michael: We appreciate your order - if you have any questions about set-up and calibration of your entire system, please ping me at Sales.
  10. Edward J M

    SVS PB-12Plus Vs PB-12Plus/2

    If you listen at moderate levels, I'll concur with John and recommend the PB12-Plus. It will have plenty of clean output and headroom in that size room even up to quite loud levels. If OTOH you were looking for a lot of slam/impact and listen at/near Dolby Reference Level, then the extra...
  11. Edward J M

    Wanted an SVS how about an HSU

    Hi Chris: All inquiries to [email protected] are typically answered within 24 hours, usually much less. Sometimes a note gets stuck in our SPAM filter and it takes a bit longer to see the note and reply. And sometimes our replies are SPAMMED at the customer end, or simply go into...
  12. Edward J M

    Wanted an SVS how about an HSU

    Hi Steve: We apologize for not notifying you about the NSD/2 enclosure back-order - it was an oversight on our part. The enclosures have just arrived at the Shop, and your subwoofer is being built and shipped today. I hope you find this satisfactory. Regards, Ed Mullen
  13. Edward J M

    Dual Subs Experience

    A second colocated 20-39PC+ will provide a 6 dB increase in headroom over a single PC+. This is (literally) a 100% increase in acoustic output. In this parlance, colocated means within about 1/4 wavelength at the highest expected XO frequency. So if you are XO'ing at 80 Hz to the speakers...
  14. Edward J M

    Dual 20-39+ or a single PB-12+2

    Hi guys: Dual 20-39PC+ (native 20 Hz tune) have more combined internal enclosure volume and much more port area than a PB12-Plus/2 in the 20 Hz tune. Enclosure volume and port area are the two biggest factors that affect output capability at/near system tuning. The two options have...
  15. Edward J M

    SVS tuning?

    Sure thing Artie. Yes, an IB is in the works, but I don't have the time to devote to it right now.
  16. Edward J M

    SVS tuning?

    Dual Ultra/2 about 3 feet apart on the front stage (flanking the equipment rack but still between the mains) killed a 40 Hz null in my system. With bass trapping and a PEQ to kill a 70 Hz floor/ceiling peak, the response is quite flat from 12-100 Hz, including the mains (using a 100 Hz...
  17. Edward J M

    SVS tuning?

    "Optimum" is really a function of the particular application. If you have a very large room and you want maximum slam and headroom at high playback levels, the go with the 25 Hz tune. You'll have strong extension to about 21-22 Hz in-room before roll-off. The best combination of...
  18. Edward J M

    Home theater audio <$800 (including reciever)

    $800 is still pushing things for that, but I still say the AV123 system is your best bet and AV123 also sells Denon AVRs and might be able to bundle something (along with some speaker wire) and get close to (but probably not under) your budget.
  19. Edward J M

    Home theater audio <$800 (including reciever)

    Of all your selections the below by far will provide the best performance value and sound quality: http://www.av123.com/products_produc...s&product=92.1 Your budget of everything (wire, interconnects, DVD player, AVR, speakers, sub, etc.) for
  20. Edward J M

    New SVS Sealed Sub

    I can count on one hand the number of sealed subwoofers on the OEM market that don't include a high pass filter. We both know that in the world of the purist, retaining the 2nd order system results in optimal transient characteristics. But a moderate (say 2nd order) HP is a common-sense...
  21. Edward J M

    New or used SVS pb12 plus 2

    This is a no-brainer because it will cost you $200 to buy both 12.3 drivers during the upgrade period which still puts you under the cost of a new Plus/2.
  22. Edward J M

    Up to four subwoofers for maximum performance--What do you think?

    Because of comb filtering, etc.? Sure, checking each speaker individually is easy. Actually with dual subs, one should check: 1) Sub #1 2) Sub #2 3) Sub #1 along with its respective speaker 4) Sub #2 along with its respective speaker 5) Subs 1 & 2 combined 6) Subs 1 & 2 combined with the...
  23. Edward J M

    Up to four subwoofers for maximum performance--What do you think?

    I use dual subs at the 1/3 and 2/3 points on the front stage with extremely good results in a 12x18x8 room. Aside from a mild bump at 65 Hz (fixed with a PEQ), the response is very smooth and linear without any sharp suckouts or peaks. And that's with the mains in the loop (something every...
  24. Edward J M

    Preliminary IMD measurements for subwoofers

    It sounds like a massive undertaking. Better bring the gas grills and plenty of food for a big cook-out. :) Take plenty of pics - looking forward to seeing/reading everything. :emoji_thumbsup:
  25. Edward J M

    Preliminary IMD measurements for subwoofers

    Wow - 10 dB is a big jump (a 300% increase in acoustic output). If the sub craps out between 10 dB intervals, maybe you could fall back on 5 dB intervals.
  26. Edward J M

    Preliminary IMD measurements for subwoofers

    Looks like we lost some good posts during the HTF server/database problems - that's too bad. :frowning: Anyone willing to repost would be appreciated. Anyway......I ran some IMD tests over the long weekend on a review subwoofer. I did 30/53 and 30/72, both at 95 dB and 100 dB. This...
  27. Edward J M

    New SVS Plus Driver!

    I would expect a flatter FR in the 20 Hz tune, and better upper bass (>50 Hz) output - these are the two areas where I thought the Plus woofer could have benefitted from improvement.
  28. Edward J M

    Preliminary IMD measurements for subwoofers

    Yes, this is possible. SpectraPro has a multi-tone generator which can output up to 10 tones simultaneously, or you can pick/choose which ones. It would only take a few seconds to check all of them. However, which gives the higher %IMD and which gives what subjectively might be perceived as...
  29. Edward J M

    Preliminary IMD measurements for subwoofers

    30/53 yields the following IM components: 83 23 7 76 113 136 166 46 189 143 129 37 16 99 196 219 67 182 173 242 249 69 272 226 152 14 295 203 And the following harmonics: 60106 90159 120212 150265 180318 210371 240424 270477 300530...
  30. Edward J M

    Preliminary IMD measurements for subwoofers

    There are various permutations of the 0.618 "Golden Ratio" which Risch used for various SC/multitone experiments. Multipliers of 1.1618, 1.2618, 1.3618...etc. can be used, for example. Using 1.7618 yields 30/53 Hz and 2.1618 yields 30/65 Hz, for example. I don't have the IMD spreadsheet in...
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