New Boston Sub

[Metallman56]

Has anyone heard the newest boston sub? its a SPG555, and looks crazy. has anyone heard it? thinking of trading my 2 g5s in for 1 of these. maybe 2. i need to hear one. so if anyone has heard it please let me know.

I saw it listed on their site about 3 weeks ago... Saw it installed on Overhaulin'.... I know it's about 1kw rms. And that it's a friggin' oval. Looks killer imo!

-Ryan.

[Metallman56]

what did they say about it on overhaulin anything?

[Lash]

I dont see whats new about it. 6x9 subs have been around forever...this is just a little larger. I'd rather have a G5.

[caraudiodave]

the guys on overhaulin (my friends) will never say anything bad about boston. why? bostons rep in so cal is their close friend.

BTW, my old install was a team effort with me and these guys. this was 4 years ago, when we all worked for Goodguys (now out of business).

if i get a chance ill try to track them down and see if i can listen to it.

[Ajaxus]

metallman, have you called that shop out in ft. wayne to see if they have any models in and see what they think of it?

[Metallman56]

thanks. i just want to hear one. you know what i mean? i love my g5s but if there is something better out there, i would trade em in. just curious i guess. i am calling my "local" boston store tonight to see if they have any. the reason i say "local" is it about 100 miles away.

thanks guys!

[DevilDriver]

trading g5's for these would be one of the worst ideas imo. i haven't heard them before, but the whole idea is illogical.

[Lash]

Originally Posted by Punk0Rama

trading g5's for these would be one of the worst ideas imo. i haven't heard them before, but the whole idea is illogical.

Exactly

[Metallman56]

why? there xmax is alot better, and i really like the way boston subs sound. if they sound the same, but are just louder, then why wouldnt i trade for em? please explain.

[Lash]

They wont sound the same.

[MIAaron]

The whole point of these subs is similar to the square subs, you can fit more in smaller spaces. Saying a 9x13 is similar to a 6x9 is a long shot....got ahead and try to mount these in your 6x9 holes and see what happens. Sure it's just larger, but a 6x9 is larger than a 4x6 to...but do they sound anything alike? No. The point of the 9x13 is getting a similar sd as a typical 12" round sub but in a more space friendly shape.

xmax is 22mm linear, compared to the g5's 15mm. But one of these will not displace more than 2 g5's. Although initial opinions of some top comeptitors is good, the Q of .8/.63 4ohm/2ohm doesn't look to promising. You can get away with higher Q alignments in a car due to the cars transfer function boosting the lower freqs, but IIRC in the recommended enclosure(4ohm) the Q is 1.1(very high). EQing your low end can also cure the issue. If you have a lot of EQ flexibility/capability available then you should be fine. If not, then you'll need to play around with placement to get the cars transfer function to match your needs accordingly....which isn't guaranteed to work.

[Lash]

Originally Posted by MIAaron

The whole point of these subs is similar to the square subs, you can fit more in smaller spaces. Saying a 9x13 is similar to a 6x9 is a long shot....got ahead and try to mount these in your 6x9 holes and see what happens. Sure it's just larger, but a 6x9 is larger than a 4x6 to...but do they sound anything alike? No. The point of the 9x13 is getting a similar sd as a typical 12" round sub but in a more space friendly shape.

I wasn't saying it's the same as a 6x9. I was saying that the concept of oval speakers/subwoofers has ben around for a LONG time and there are many reasons why people chose to upgrade to ROUND speakers.

[MIAaron]

And what are these many reasons?

The main difference between an oval speaker and a round speaker is the doppler pattern/response. An "oval" doppler pattern doesn't = bad sound. If it did then line arrays wouldn't exist. The same holds true for any other speaker with two speakers on the same baffle...including people with standard/regular dual sub boxes.

[Lash]

Are you saying oval speaker will have just as good sound reproduction?

Besides...I'd much rather have the more rigid circle shape than the oval shape....especially in a sub application.

[MIAaron]

I'm saying oval doesn't = bad sound. It is ignorant to think something sounds bad because it is oval. The main difference between oval and round is the dopplar pattern of the response. If both oval and round speakers are made to the same quality, then I'm confident they can sound just as good.

Do you actually think Boston made a cone isn't strong enough for a daily driver????

[Lash]

Whatever. Well have to wait and see. I just dont think it can stack up against some of the other great subs out there. It's been proven that oval designs are more prone to distortion.


Whats the price tag on one of these?

[MIAaron]

Well, MSRP on them is ridiculous...$600?....but I don't know what they're actually selling for.

Where was it proven oval designs are more prone to distortion? I am serisouly curious, as the biggest downfall I could see is dopplar distortion.....but that hasn't been a major issue since the 70's. I do agree its hard to find a good one, but how many good oval speakers are even made? It's mainly an application dependant design...and car audio for the most part doesn't get the good stuff. I'm still fully confident somone could make a good one though.

[Lash]

Originally Posted by MIAaron

Where was it proven oval designs are more prone to distortion?

I though all Car Audio people knew this????

There are always cone strength issues with oval speakers since the distance from the outside to the center is different everywhere. The L7/L5 does too, but the cone is pretty beefy on it.

So $600 MSRP? Were looking at between $400-500 retail....

And if space is an issue....you could probably fit some 8's or even 10's in the same space of the 9x13. I would assume people would want to use the becase of height issues (thats where a 9" height would come in handy instead of a 12" height +/- like a round 12"sub).

Who knows....maybe they'll sound better than everyother $600 sub out there...but I doubt it.

[MIAaron]

Accepting audio myth without anything to back it up just passes on rumors. I don't like to accept much these days without evidence, and there just isn't much that I can think of that backs it up. I agree that I used to accept it back in the day, but a well made speaker is a well made speaker. And seeing other well respected audio designs that have responses very similar to oval speakers makes me doubt the rumor.

The nice thing about the 9x13 is the fact that it has a similar Sd to that of other 12's. Yeah you could fit an 8 or 10, but why not opt for the 12 if you can fit it in the same space and it still sounds good?

Besides the sky high q, the depth is the next biggest downfall to me. An interchangable voicecoil just seems like a waste.