boston acoustics gtr10 passive radiator
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=110923
Printed Date: July 04, 2025 at 9:29 PM
Topic: boston acoustics gtr10 passive radiator
Posted By: rubicrawler_lj
Subject: boston acoustics gtr10 passive radiator
Date Posted: January 23, 2009 at 4:25 PM
I have been unable to get a response from Boston Acoustics on how to compute an enclosure's size when using their passive radiator. Can one of you audiophile's help me out? Thanks
Replies:
Posted By: haemphyst
Date Posted: January 23, 2009 at 7:40 PM
What woofer will you be pairing it with? I need T/S parameters, and I can probably get you a starting point.
SPL or SQ? Also, have you ALL the weights that came with it?
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: rubicrawler_lj
Date Posted: January 23, 2009 at 9:25 PM
First of all, thanks for offering to help. I am in the design stages still, looking for sound quality not SPL. I will probably be going with MB Quart's Discus series10" subwoofer, model # DWI-252 with DVC @ 2 ohms, 300 watts RMS continous. https://www.mbquartusa.com/discus_subs_parameters.html# Specs: Vas= 38 liters, Fs= 32 hertz, Xmax= 5mm, Qts= 0.322
Posted By: rubicrawler_lj
Date Posted: January 24, 2009 at 8:24 AM
Sorry, I forgot to list the following specs: Qes= 0.344, PeRMS= 300 watts and PeMax= 600 watts Additional information, recommended sub enclosures for the DWI-252 posted at MB Quart website. https://www.mbquartusa.com/discus_subs_enclosures.html When I input all the parameters including the GTR10's 9.09" diameter into AJ Design Software's Subwoofer Box Enclosure Design Calculator, I get a port length of over 272".  https://www.ajdesigner.com/fl_subwoofer/subwoofer.php
Posted By: jmelton86
Date Posted: January 29, 2009 at 6:34 PM
haemphyst, do you remember trying to model something up with the one I have? You weren't able to because BA doesn't list the appropriate t/s perimeters for the PR... or something. ------------- 2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
Posted By: rubicrawler_lj
Date Posted: January 29, 2009 at 9:02 PM
I was told by a local car audio shop that I should design the enclosure to the subs sealed enclosure specs and account for the PR's volume. Does this make sense?
Posted By: rubicrawler_lj
Date Posted: February 01, 2009 at 9:20 AM
UPDATE: Received an email from Boston Acoustics that stated that I should use the sealed enclosure interior volume recommendations for the subwoofer that I am pairing it with as a guideline. They also informed that their PRs where designed specifically to be paired with their G5 subwoofer series so I am on my own.
Posted By: haemphyst
Date Posted: February 01, 2009 at 10:37 AM
I'm glad you brought this one back up... I DID actually plug all the numbers I had for these components into my JBL, but I was unable to come up with anything decent. HUGE enclosures with reasonable extension or "whumpy" tiny enclosures for output's sake.
I'll try to get a couple screenshots and upload 'em for you.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: rubicrawler_lj
Date Posted: February 01, 2009 at 11:50 PM
The link that Boston Acoustic pointed me to recommends that I set the GTR10 to "tunning mode 3" for a resonant freq of 30Hz in a 0.5 cu ft enclosure. However, BA says these figures are only applicable when used with their G5 series subwoofers. https://mobile.bostonacoustics.com/manuals/G5_GTR_Man.pdf Additional information: Looks like the overall size for my underseat enclosure is going to be 12"X30"X6", I might be able to bump it out another 1.25" to ?" in the center section of the seat (9"X28"X?). Without any "bumping out", I should wind up with a Vbox of 0.78 cu ft using 3/4" mdf. Should I shelve the PR idea all together and go exchange my 10" sub for two 8" subs instead? I might be able to get a hold of two JBL GTO 804's pretty cheap, would they do the trick?
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