It may say that in the specs but what you don't know is how many dB down that is. for example, it may rolloff at 150 hitting 28 hz 80 dB less volume than the rest of the freq range. that is a way to claim something that can't be achieved in the real world.
that's why some companies conveniently omit putting a -dB rating with the freq response; they aren't lying per se but they aren't telling the truth either.
to reach 28Hz, that speaker would realistically have to have woofers in the 10-12' size to be able to do that with any measurable volume.
to give you some comparisons, my vintage EPI bookshelves (similar to Advents back in the 70's) have 6" woofers and are only capable of 50-60 hz. the new DefTech Studio Monitor 55 can reach 40 Hz & it has 1 - 5-1/2" woofer/midrange AND a 6x10 passive radiator. the Martin Logan Motion 4 mini-bookshelves I use for heights can only reach about 90 hz before dropping off and it has a 4" woofer. the DefTech supercube I I have which gets to 26-28 Hz has a 10" woofer & 2-10" passive radiators! that a HTIB bass module could reach that the same freq with any measurable output is dubious.
unless your Yamaha speaker is really a huge
bookshelf, that Yamaha spec is BS. even if it were bookshelf size, 28 Hz is a level very few
full range tower
speakers can reach. I once owned some AR towers with that bass capability and they had 2
it just occurred to me that the rating is probably for the combined sat & bass module system
but even that is hardly believable for a typical bass module in a HTIB package. I highly doubt Yamaha has packaged a bass unit anywhere close to what it costs for that kind of performance in a HTIB pkg that probably costs $500 or so. even with a bass unit, it's still a BS spec.
sorry, but if Yamaha truly published a 28hz spec for HTIB sat/bass module speaker system, I think they have stretched the truth to the point of incredulity!
& you shouldn't believe it! it's not practically achievable even with a good sized bookshelf let alone a sat. & bass module in a typical low cost HTIB pkg.you're on the right track in looking at upgrading to much better surrounds.
in the meantime, I suggest throwing your Yamaha specs in the trash where they belong and set the crossover at least 100 Hz. you're probably even better off going to 150, especially it there's still distortion. the fact that another AVR set it to 150 confirms this.
btw- are you still using the Yamaha bass module? if so, your next priority should be to get a real subwoofer that really is capable of reaching into the 20 Hz range
have a lot of choices from reputable companies that won't break the bank and really do meet their specs....SVS, Hsu, Rythmic, Epik, Velodyne all come to mind, they are all dedicated subwoofer mfgs who have excellent reputations.
if you're not using a sub or the bass module, make sure you set the fronts to Large and let them handle the bass for now. my comment on under-utilizing the fronts was my assumption that you had a subwoofer and sorry I didn't make that clear
without a sub, setting the fronts to Large will get you the bass from the sats so you're not losing it
yes, I know what you're saying about independent crossovers
that has been told to Pioneer many times by many enthusiasts. I can go into it but according to the Pioneer US marketing manager, he has asked Pioneer Japan's audio engineers about it and they are adamant that this could degrade audio quality by introducing phase shifts & anomalies. It's not likely to change in the near future. but IMHO as a Pioneer enthusiast, the practical benefit outweighs the theoretical downside. at least they should offer it as an option (sigh). it hasn't happened yet and Pioneer has been critiqued for not having it for at least 4 years now.Edited by ss9001 - 1/19/13 at 12:55pm