I don't think there are many choices for internal dampening inside the duct. The dampener is more metal than any soft material.
You could try adding homasote to the walls of one space. Jerome > On Aug 28, 2017, at 9:56 AM, Alex Hillman <[email protected]> > wrote: > > Yep, we have acoustical materials inside the walls as well - do you have a > favorite/preferred material or product for the internal dampening, without > blowing a ton of $$? > > -Alex > > > ------------------ > The #1 mistake in community building is doing it by yourself. > Better Coworkers: http://indyhall.org > Weekly Coworking Tips: http://coworkingweekly.com > My Audiobook: https://theindyhallway.com/ten > >> On Mon, Aug 28, 2017 at 12:36 PM, Jerome Chang <[email protected]> >> wrote: >> Kudos. Very rare from what I've seen in many other spaces. >> >> Aside from the internal damper, try adding an acoustical blanket (that pink >> and foil stuff) across both ceilings. Ideally you would've installed that >> inside the walls as well... >> >> Jerome >> >>> On Aug 28, 2017, at 9:16 AM, Alex Hillman <[email protected]> >>> wrote: >>> >>> Yup there's a separate return duct for each phone room. >>> >>> >>> ------------------ >>> The #1 mistake in community building is doing it by yourself. >>> Better Coworkers: http://indyhall.org >>> Weekly Coworking Tips: http://coworkingweekly.com >>> My Audiobook: https://theindyhallway.com/ten >>> >>>> On Fri, Aug 25, 2017 at 11:26 AM, Jerome Chang <[email protected]> >>>> wrote: >>>> Yes. A damper inside the duct should help. >>>> Do you have a return duct or is that shared as well? >>>> >>>> Jerome >>>> www.BLANKSPACES.com >>>> >>>>> On Aug 25, 2017, at 7:55 AM, Alex Hillman <[email protected]> >>>>> wrote: >>>>> >>>>> I can't remember who turned me on to soundproofcow.com, but their stuff >>>>> is good and reasonably priced, and their team is pretty knowledgeable >>>>> without being salesy too. >>>>> >>>>> Do your phone rooms share ductwork/ventilation? I've noticed that ours >>>>> transmit the most of the noise between the spaces, and haven't found a >>>>> good solution for that yet...maybe something in the ducts themselves, or >>>>> over the vents? >>>>> >>>>> -Alex >>>>> >>>>> >>>>> ------------------ >>>>> The #1 mistake in community building is doing it by yourself. >>>>> Better Coworkers: http://indyhall.org >>>>> Weekly Coworking Tips: http://coworkingweekly.com >>>>> My Audiobook: https://theindyhallway.com/ten >>>>> >>>>>> On Fri, Aug 25, 2017 at 10:35 AM, Adolfo Taylhardat >>>>>> <[email protected]> wrote: >>>>>> Thank you Jerome, we have started to look at these materials. >>>>>> Found soundproofcow.com with interesting options. >>>>>> Best. >>>>>> Adolfo >>>>>> >>>>>>> On Monday, August 21, 2017 at 8:35:53 PM UTC-4, Jerome wrote: >>>>>>> Hi. >>>>>>> >>>>>>> For your offices, do your walls go to the roof or the above floor >>>>>>> structure? If not, add batten insulation (that pink stuff w/ foil) >>>>>>> above the ceiling, especially if your ceiling is “ACT”, or acoustical >>>>>>> ceiling tile. >>>>>>> >>>>>>> Keep in mind that sometimes you don’t want to isolate sound as that >>>>>>> will deaden the sound too much. >>>>>>> Maybe you want just to shape the reverberation? >>>>>>> >>>>>>> >>>>>>> JEROME CHANG >>>>>>> >>>>>>> talk to us: (323) 330-9505 >>>>>>> chat w/ us: http://www.BLANKSPACES.com/chat >>>>>>> >>>>>>> WEST: Santa Monica | 1450 2nd St (@Broadway) >>>>>>> CENTRAL: Mid-Wilshire | 5405 Wilshire Blvd (2 blocks west of La Brea) >>>>>>> EAST: Downtown | 529 S. Broadway, Ste 4000 (@Pershing Square) >>>>>>> >>>>>>>> On Aug 21, 2017, at 9:21 AM, Adolfo Taylhardat <[email protected]> >>>>>>>> wrote: >>>>>>>> >>>>>>>> Hi all, >>>>>>>> I would say that one of our major challenges has been sound isolation >>>>>>>> (even between private offices) and I am looking for innovative, >>>>>>>> cost-effective, visually pleasant solutions. Any >>>>>>>> recommendations/suggestions/opinions? Adolfo >>>>>>>> >>>>>>>> -- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "Coworking" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>>>>> an email to [email protected]. >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Coworking" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>>> an email to [email protected]. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "Coworking" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "Coworking" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Coworking" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Coworking" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Coworking" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Coworking" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.

