JBL Pro 3677 Have arrived!!! - Page 26 - AVS Forum | Home Theater Discussions And Reviews
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post #751 of 790 Old 08-08-2017, 05:26 AM - Thread Starter
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Quote:
Originally Posted by wolverin1 View Post
Really appreciate your feedbacks!



I consider your advises about adding more efficient speakers for LR.
I prefer that it will be JBL's if I already going to have that 3677. sadly NO way I can let in 2 more beauties like the 3677 (spouse...)

the jbl lsr305 and 308 looks nice and the price is not bad.
I couldnt find anything about their efficiency.
also I dont see how i can connect them to avr, they only have xlr inputs. any way , I dont know if I should go the ACTIVE monitor route. will it mix well with the passive 3677 ?

are there other models of jbl bookshelf\monitors that can match 3677?
I wouldn't mix the 3677 with any non CD (compression driver) speaker. That's why I mentioned the LSR 305/308. Also if it's a review from a paid reviewer don't even read it. They get paid to go ohh and ahh.

As for sensitivity .. because they are active they are rated with peak spl. But they are efficient speakers. The 308 is rated at 112db. That's at 1m (3'). So every time you double distance you lose 6db. So if you sit at 12' you can expect 101db. Remember reference is PEAKs of 105db. That means you can get to -5 on the AVR before you run outta steam. That's also outside or in a room treated heavily with absorption. In a properly treated room you'll have good off axis energy adding to the sound power and can probably get clean reference levels to 12'. But honestly reference is louder than most ever listen. I may do it once a year. For me if I wanna let loose -5 is damn loud. Normally i'm at -10 to -15 which sounds right to me.

Also keep in mine the LSR use the same waveguide technology as the M2. Superior off axis energy and control.


As for matching the sound to the 3677.. you have one option. More 3677s. You can't do that so don't worry about it.

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post #752 of 790 Old 08-15-2017, 12:26 PM
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Hii everybody,
after long time reading all this thread I decided to join myself
I'm from Italy (Milan) and I've been thinking for sometime of buying 3 x JBL 3677s for the dedicated room in my new house.. size will be 3.5 meters width, 5.6 meter long, but only 2.4m heigh (it's an underground basement)

now I own an MK system I'm very happy about, buyed throught the years with a lot of sacrifice, composed by 3x S150 front + 2x S150 fronthigh, 4x 150tripole surr/surr back, and 2x MX125 subwoofer, but I would like to join the "grown-babies-group" with some JBL cinema speakers

I've decided for the 3677 after thinking really long about, due to the small size of the room and in particular for the low ceiling..and also because of the low price compared to other models (as 4722)

consieder also a this: here in Italy (but also in Europe) cinema speaker like this are just really not common, QSC stuff is absolutely non-existent and also JBL pro speaker are very difficult to find in shops.
Prices are much higher here due to shipping and customs rates (I know this well because I was considering the Diy Volt surround speakers after reading cdy's experience, and I would have to add the shipping and a +20% for custom and Vat italian taxes)

for now the lowest price I've found here in Italy is 790 euros = about 930$ shipped each (consider that here the 4722 costs 2230$ each!) and I am preatty sure this is the lowest price in europe

SO I'm really thinking about to buy one, try it at home..... and if it goes well buying the other two and sell all my MK system


the other idea was to go DIY with used Jbl components such as 2226 woofer and 2426 + 2370 horn, hoping for better results, with an external crossover and 3 yamaha P2500s each driving one of the front, or creating a simple low-section such as 3678 with external horn-tweeter like 2426 or 2446

this component I can "easily" found in a concert pro-store a 100km from me, and would costs :
- 2226 used but reconed 200eur/230$ each
- 2246 used but checked 180eur/210$ each
- 2370 horn 90eur/100$ each
it would be to add price of the cabinet (I think 150eur/200$ each) and all the small parts such as reflex, rockwool, and terminals, for about the same price of the 3677, but with preowned material....
(edit... I could also find 3x used 2265hpl for 350eur/380$ each shipped from US)

I was just decided buying the 3677 after the holidays, but today reading Notnyt and Microtech experiences about the results upgrading the 3677... well.... it just made me thinking again about DIY
the problem is that I'm not a Diyer guy and I'm really concerned about waste a lot of time and money for not having the hoped results....while I could go for the easy way with some brand new 3677 (maybe considering in an year or two to change the CD with the 2426)

I've also seen a few guys upgrading their cinema speakers with some JBL SRX-series component...are those that good?

...so any opinion is welcome
sorry for the lenght and my bad english...been quite rusty!

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post #753 of 790 Old 08-16-2017, 01:19 AM
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It looks like JBL has discontinued the 3677. It has been moved from the cinema section to the vintage section on the jbl pro website. It lists the c211 as the replacement. sad.
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post #754 of 790 Old 08-16-2017, 01:30 AM
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2265hpl + 2453h-sl + STX825 waveguide. See the 15" 2-way link in my sig. Smokes the 3677. Helping someone swap out the hf section of their 3677 soon and replace it and the xover with a 2453h-sl, stx waveguide, and the minidsp 250x2 plate amp. If the amp doesn't perform well enough, I'll find a replacement or design a passive xover. It's too bad that the hypex ncore plate amps with dsp aren't avail yet.

I may also see what it takes to tweak the passive xover on the 3677 to swap in the 2453h-sl/STX wg.

I'll have a 3677 and parts on hand soon. Will update when there's more info.
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post #755 of 790 Old 08-16-2017, 01:30 AM
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You know, a large percentage of a movie's soundtrack comes through the center. Quite frankly if you can only have one jbl 3677, the center is the best place to put it. Of course it is ideal to have matching screen channels but it won't kill you not to. the jbl 3677 is so good with dialog. that is its specialty really. It would however be a major issue to have a 3677 as a left channel and a home speaker as a right. However, having said that, there is a big difference in sensitivity from the 3677 to an average home theater speaker. You will likely have a volume level difference of around 13db. You will likely never run your 3677 past 5 watts if your within 10 feet of the speaker. check out this website link to crown audio to get an idea of the the power levels you need and the difference in output between two different sensitivity rated speakers. http://www.crownaudio.com/en/tools/calculators
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post #756 of 790 Old 08-16-2017, 03:44 AM
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Quote:
Originally Posted by MICROTECH85 View Post
It looks like JBL has discontinued the 3677. It has been moved from the cinema section to the vintage section on the jbl pro website. It lists the c211 as the replacement. sad.
yes I know...but some of them are still present on internet in some e-shop, i found several in france, some in germany and a few here in italy
I also see the new Cinema 2 serie, but still no review and no opinion...and also the components don't see to me really high performance (M115 woofer...??!!)

if you were you answering to me, I dont want to buy one 3677 to use it as centrer speaker, I would just to try and see if I like it, if it's so I'll buy other two as front...


Quote:
Originally Posted by notnyt View Post
2265hpl + 2453h-sl + STX825 waveguide. See the 15" 2-way link in my sig. Smokes the 3677. Helping someone swap out the hf section of their 3677 soon and replace it and the xover with a 2453h-sl, stx waveguide, and the minidsp 250x2 plate amp. If the amp doesn't perform well enough, I'll find a replacement or design a passive xover. It's too bad that the hypex ncore plate amps with dsp aren't avail yet.
yeah I saw your building thread very useful!
problem is that some of those parts are impossibile to find in europe and buying them from usa would be very expensive (ie 3x 2453 vithout horn would cost me near 900$ + custom rates)

I also thought about 2226+2426 beacuse I think those are the component of the 3678 speakers, whose crossofer I can find preowned on internet for a hundred dollars and also because I can buy them for just 450 eur horn included for each speaker...
the minidsp is also an option I didn't consider (I was thinking about a Nanoavr DL minidsp to equalize all the speaker with dirac) I still have one 2x4 unused at home! but does it can lower the level from 107db from the tweeter to 97-99db of the woofer..? I always used it as an equalizer, never as crossover

really thank you for the opinion!

some question: is that really so much differences between the stock 3677 and the custom/diy you both did..?
if I couldn't find the 2453 tw, any other possible option..? any opinion about 2" tweeter such as 2445-2446 or electrovoice DH1A?
and again.....a preowned SRX such as SRX-715, 712 or 725 could be another option...?
thanks everybody

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post #757 of 790 Old 08-16-2017, 06:35 AM
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3677 discontinued?

I've been looking at these to upgrade my home theater for a while. Now that they are being discontinued (and the new replacement models appear too high to fit under my projector screen), wanted to get opinions if they will work in my room.

Note that I'm upgrading from existing [very good] Ascend Acoustics CMB-340s LCR.

Here is my room:
* 13' (12' viewing distance) x 25' long, opening to the right as an open L-shaped basement of 1000 sq. ft., 8 ft ceilings (with soffet perimeter)
* 96" screen, 3677s would be under that on the floor (with sound proofing)

Tricky part is that I have a U-shaped sofa, 12' long but 5' in the center of the U (primary seating area). The ends of the U to the left and right extend to about 5' from the front wall and may block some of the sound from the L and R (currently my speakers are on stands above the sofa arm height). Will I lose too much of the sound stage here to make these a good upgrade? I will be able to see each speaker under the projector from the primary seating position.

OK to use Ascend Acoustics CBM-170s as surrounds (2) and Atmos ceiling (2) for 5.2.2? Or need JBL to better match timbre (if so, what model)?

Thanks.
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post #758 of 790 Old 08-16-2017, 08:41 AM - Thread Starter
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Originally Posted by JeffAV View Post

Note that I'm upgrading from existing [very good] Ascend Acoustics CMB-340s LCR.


OK to use Ascend Acoustics CBM-170s as surrounds (2) and Atmos ceiling (2) for 5.2.2? Or need JBL to better match timbre (if so, what model)?

Thanks.
None of the JBL surrounds are timbre matched to any of their mains. The JBL surrounds are quite bad IMO.

So yes the surrounds and atmos you have are fine unless you decide they don't sound right with a new LCR.

I'd also recommend the HTM-10, HTM-12 or other speakers at diysoundgroup.com if you want something a tad smaller without losing performance.
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post #759 of 790 Old 08-16-2017, 08:47 AM - Thread Starter
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Originally Posted by MICROTECH85 View Post
It looks like JBL has discontinued the 3677. It has been moved from the cinema section to the vintage section on the jbl pro website. It lists the c211 as the replacement. sad.
The c211 definately has a nice driver although the 115-8a is basically the cheapest woofer they have, it's also used in the JRX line. I've owned it and it's not very impressive. The 2035hpl in the 3677 is a good bit better. It would also be handling a good bit of vocals. Curious how the c211 sounds.
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post #760 of 790 Old 08-16-2017, 09:45 AM
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Originally Posted by cdy2179 View Post
None of the JBL surrounds are timbre matched to any of their mains. The JBL surrounds are quite bad IMO.
wat?


the 8350s and 9310/9300 are awesome. The scs8 too.
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post #761 of 790 Old 08-16-2017, 11:39 AM
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Yea, the 2035 is quite a bit better than the m115-8a. The 2035 has cast aluminum frame which is a traditional feature found on all quality jbl. The m115-8a has a stamped frame. So as i see it, the c211 follows the trend of JBL eagerly substituting high quality, high precision top quality speaker components for high profit margin mass produced components of lower quality and looser tolerances. It is amazing how narrow the vc gaps are on the traditional JBL components; a true engineering marvel. In my experience i have always preferred the sound of low frequency drivers with a higher BL as opposed to a lower one. JBL has gradually been coming out with 15" drivers that go lower and lower in BL, a rating which they used to tout as imperative for great transient response and tight bass. The BL factor as far as i understand it is a measure of the strength of the motor of the speaker. And by having a more powerful magnet and tighter voice coil gap results in a very high strength which gives you tight controlled bass.

BL Factor:
jbl 2225h - 23 n/a
jbl 2226h - 19.2 n/a
jbl 2035 - 16.5 n/a
jbl m115-8a - 14 n/a

added: the BL on the JBL 1500AL's found on the project k2 s9900 have BL of 27

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post #762 of 790 Old 08-16-2017, 12:07 PM - Thread Starter
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wat?


the 8350s and 9310/9300 are awesome. The scs8 too.
I should add that I've only owned the 8340a and 8330a. Both were quite bad IMO, probably worst speakers I've owned. The others I haven't had in my room to demo. I have not heard the ones you mentioned.

As for the "wat". If that's referring to timbre matching they aren't even close. None of the drivers are the same.. not even close and sound worlds apart. To even be slightly timbre matched you have to use very similar if not identical drivers. To really be timbre matched they have to be completely identical speakers, all with room treatments that handle reflections in a similar manner to give a like response at the seats to keep the timbre in tact. There's a lot more to it than just using the same speakers but without that .. good luck. That doesn't mean it's not enjoyable. My HTM-12 aren't identical to my 10 volt 10lx speakers.

Timbre differences are easily audible while playing pink noise while at the MLP.
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post #763 of 790 Old 08-16-2017, 12:12 PM - Thread Starter
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Originally Posted by Molon_Labe View Post
The SCS series aren't bad. What do you not like about them? I would like to hear some Volt 8/10s as surrounds and do an A/B. After having 4722's as surrounds, they all suck but the 4722's surrounds just took up too much real-estate. I should have bought 3677's as surrounds.
As I said above I should have clarified I was speaking of the surrounds I've owned in the 8 series Cinema line often matched with the 3 series and screen array cinema speakers. I've owned the 8340a and 8330a. The volt 10lx is far superior. I'm not sure about the SCS series, I haven't owned them but have heard good things.
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post #764 of 790 Old 08-17-2017, 01:20 AM
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Originally Posted by MICROTECH85 View Post
You know, a large percentage of a movie's soundtrack comes through the center. Quite frankly if you can only have one jbl 3677, the center is the best place to put it. Of course it is ideal to have matching screen channels but it won't kill you not to. the jbl 3677 is so good with dialog. that is its specialty really. It would however be a major issue to have a 3677 as a left channel and a home speaker as a right. However, having said that, there is a big difference in sensitivity from the 3677 to an average home theater speaker. You will likely have a volume level difference of around 13db. You will likely never run your 3677 past 5 watts if your within 10 feet of the speaker. check out this website link to crown audio to get an idea of the the power levels you need and the difference in output between two different sensitivity rated speakers. http://www.crownaudio.com/en/tools/calculators

MICROTECH85

When the 3677 will arrive (as center) I plan to use it with 2 svs ultra bookshelfs as L+R , which are 87db , all with Denon avr 2313, no external power amp(-which I understand its not needed).
do you think its a problem, I mean the part you wrote about volume differences ?
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post #765 of 790 Old 08-17-2017, 04:32 AM - Thread Starter
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MICROTECH85

When the 3677 will arrive (as center) I plan to use it with 2 svs ultra bookshelfs as L+R , which are 87db , all with Denon avr 2313, no external power amp(-which I understand its not needed).
do you think its a problem, I mean the part you wrote about volume differences ?
You'll use trims in the AVR to adjust for the sensitivity differences so at the seats their levels will be the same. The only issues would be if you cranked it loud enough to run out of power for the SVS. The JBL would remain crystal clear as it doesn't need much power at all but the SVS wouldn't have enough to keep up nor could it even if you had an external amp as it can't handle the power to keep up with the JBL even if the JBL remained on the AVR. Remember the JBL will require 10x less power roughly. Under moderate level listening you'll have no issues.
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post #766 of 790 Old 08-17-2017, 05:51 AM
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cdy2179

I never listen at too loud levels. even with 3 svs ultra as LCR the denon didnt seem to run out of air at higher volume and the sound was great. I guess that with a more efficient center the work load would be even better. I hope.

The local JBL rep informed me today that in about 2 month the 3677 will arrive ahhhh, the wait...
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post #767 of 790 Old 08-17-2017, 01:57 PM
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I typically listen to movies with dialog at about 67-70db. Every onece in a while i will go as high as 75db for dialog. My speakers rarely go above 90-95db peak. Subwoofer with low frewuencies needing eq to sp0ound equal to speakers volume will be over 10db higher at the lowest octaves so my sub will hit over 100db sometimes. So if you listen like me, you will rarely see the jbl 3677 use more than 2 watts. A home speaker with 88db sensitivty in my system would require 31 watts to have equal loudness to the 3677 at 2 watts. So like cdy said, if you listen loud, the home speakers could run out of gas. But yeah, set avr center channel to -10db, then set left and right channels to +1-3db as a base, then just make sure they are all equal loudness at listening position.
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post #768 of 790 Old 08-18-2017, 02:56 AM
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Where have people purchased this? Any recommendations?

Last edited by JeffAV; 08-18-2017 at 03:06 AM.
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post #769 of 790 Old 08-18-2017, 11:49 AM
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I bought mine online from a company called performance audio in utah. But to my knowledge JBL makes the 3677 to order which means no dealer inventory. Hopefully people can still buy them for a while. But jbl may not be making the 2035 anymore. If thats the case,they wont be able to make the 3677.
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post #770 of 790 Old 08-18-2017, 01:54 PM - Thread Starter
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JBL actually makes them in batches... not to order. They just don't have warehouses full so often you must wait for the next batch to come off the line to get them or you may get lucky and the current batch may not be completely spoken for. The first time I bought them I had them in 3 or 4 days.. the 2nd time about 2 weeks. It's the luck of the draw.

You can also get them at full compass. Price should be around $600 or a tad less drop shipped from JBL.
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post #771 of 790 Old 08-18-2017, 02:04 PM
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Don't think they make them anymore at all
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post #772 of 790 Old 08-18-2017, 03:08 PM
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Don't think they make them anymore at all
My supplier said they still are, but I think this will be the last production run. It appears its the end of an era. It was a good, long run.
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post #773 of 790 Old 08-22-2017, 04:44 AM - Thread Starter
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I do like the idea of the new line array's coming out for smaller theaters. Those could be some great alternatives.
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post #774 of 790 Old 08-23-2017, 10:24 PM
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Highlighted by @MICROTECH85 , the 3677 is officially vintage. It's no longer listed in the Pro Cinema 3000 series site.
It's weird that the 3678 is still there.
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post #775 of 790 Old 09-14-2017, 08:53 AM
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How will three 3677s as LCR work just off the floor (sound isolation), roughly 12' from listening position?

(And any thoughts comparing to Klipsch RP280 with matching center, surrounds, and upward firing Atmos.)

Last edited by JeffAV; 09-14-2017 at 10:41 AM.
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post #776 of 790 Old 09-14-2017, 11:02 AM
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How will three 3677s as LCR work just off the floor (sound isolation), roughly 12' from listening position?
Mine work *perfectly* like that. Set so the centre of the horn is at ear height and 11.6 from the MLP. Every day they put a *huge* grin on my face.

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post #777 of 790 Old 09-14-2017, 04:56 PM
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Has anyone actually had occasion to hear the new JBL 200 series replacements for the 3677? If so, what did you think as compared to the 3677?

http://www.jblpro.com/www/products/c...s#.WbsWrciGOUk
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post #778 of 790 Old 09-14-2017, 05:08 PM
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Quote:
Originally Posted by Molon_Labe View Post
I don't think anyone here has them or has even heard them yet. I believe Mark Seaton was saying their desgin required even further imaging requirements than the previous generations. Are you looking to go with JBL Pro Cinema? I am selling my 4722n with the upgraded CDs. PM me if your interested, I can bring them to Dallas. I am in San Antonio
Unfortunately I only have 12 inches of depth behind my screen or I would likely already own your 4722s. I ended up with three way Klipsch heritage speakers over the 3677s (was tough decision) just because I was curious to try horn mid and horn tweeter LCRs.
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post #779 of 790 Old 09-15-2017, 07:21 AM
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I have the Quartets and I like them alot for LCR. I cross them at 80hz so no need for larger Forte/Chorus. If I had more room behind the screen, I'd try La Scalas for LCR but with that much room back there, I'd probably also would have long bought JBL 4722s and been happy with them.
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post #780 of 790 Old 09-16-2017, 05:29 AM
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Originally Posted by kbarnes701 View Post
Mine work *perfectly* like that. Set so the centre of the horn is at ear height and 11.6 from the MLP. Every day they put a *huge* grin on my face.

K
Saw your room plans..looked like you have them off the floor on blocks. I don't have the ability to do that, they need to be directly on the floor. If that won't work well, will be looking into a Klipsch RP system (280, 450...).
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