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I did a search and several AVS forum users have used these speakers for Atmos but I can't really find a good thread or post that provides a clear and detailed review and feedback.

If you have experience with or have heard these speakers, can you please let me know what you think of them?

I need in-ceiling speakers that are not so far off in sensitivity from JTR speakers. The Volts are the closest ones that I can find.


Thanks!
 

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You mean you can't hang four Noesis 215RTs from your ceiling? :D
 

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I've had four 328c's sitting in boxes for several months waiting for backer boxes and installation in my ceiling - too much other stuff going on, sorry.

I have heard the cousins of the 328c which are JBL SCS-8s at a Synthesis demo during CEDIA 2015. I read somewhere the SCS-8s use pretty much the same drivers as the 328c, but also include their own box and mounting bracket as a finished product. The CEDIA demo was fantastic, but there were so many speakers involved in the demo (including three M2s up front), it would be hard to evaluate any specific speaker in the demo. Needless to say, JBL would not have included sucky speakers in what was their top-line demo at the time. Also there are quite a few SCS-8 reviews out there if you want to google them.
 

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I've had four 328c's sitting in boxes for several months waiting for backer boxes and installation in my ceiling - too much other stuff going on, sorry.

I have heard the cousins of the 328c which are JBL SCS-8s at a Synthesis demo during CEDIA 2015. I read somewhere the SCS-8s use pretty much the same drivers as the 328c, but also include their own box and mounting bracket as a finished product. The CEDIA demo was fantastic, but there were so many speakers involved in the demo (including three M2s up front), it would be hard to evaluate any specific speaker in the demo. Needless to say, JBL would not have included sucky speakers in what was their top-line demo at the time. Also there are quite a few SCS-8 reviews out there if you want to google them.
Same here. I own a pair of Control 328C but not installed yet on mi room. I just tested them on temporary boxes (about 1 cubic feet) and I can say they sound very clean and authoritative. One can feel we have got a high sensitivity driver!!
I recommended them (with no doubt) for Atmos in-ceiling use.

People doesn't talk about these speakers because the vast majority doesn't want spend more than 150$ on a single in-ceiling speaker.
 

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The 328c's have a very good 120deg conical dispersion pattern which means they should make great Atmos speakers. They are fairly efficient, can take quite a bit of power, and extend down to 60Hz (in a net 0.71 cuft box). I've attached their published specs which include FR and dispersion patterns on the 2nd page of the pdf. Their dispersion actually looks better than the SCS-8s, but their upper-end FR is a little 'bouncy', as are most horn loaded tweeters.

I have the non-CT version which comes without the distribution transformer which is shown mounted on top in the picture.

http://www.jblpro.com/ProductAttachments/JBL_Ctrl328C_CT.v1.pdf
 

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Same here. I own a pair of Control 328C but not installed yet on mi room. I just tested them on temporary boxes (about 1 cubic feet) and I can say they sound very clean and authoritative. One can feel we have got a high sensitivity driver!!

I recommended them (with no doubt) for Atmos in-ceiling use.



People doesn't talk about these speakers because the vast majority doesn't want spend more than 150$ on a single in-ceiling speaker.


They are typically close to $300 per. Where can we find them for $150?


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They are typically close to $300 per. Where can we find them for $150?
I have found used ones before from BP Photo for $150 or less. You might call and ask if they expect a batch of used ones any time soon. Their price for new ones is just under the $300 you quoted.
 

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I have found used ones before from BP Photo for $150 or less. You might call and ask if they expect a batch of used ones any time soon. Their price for new ones is just under the $300 you quoted.


Thanks Darrell. Sorry, I wasn’t thinking about used and didn’t know B&H did that. I will contact them.


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I didn't see any 328c's on the Crutchfield link - just 3 different JBL Arena in-ceiling speakers. Not sure how they compare to the 328c's.
Oh Sorry! What a confussion!

Let's see.
User Point 1 said on his first thread : "I did a search and several AVS forum users have used these speakers for Atmos but I can't really find a good thread or post that provides a clear and detailed review and feedback. "

I answered to him: "People doesn't talk about these speakers because the vast majority doesn't want spend more than 150$ on a single in-ceiling speaker." I meant these JBL's cost at least 300$/u (I paid 375€ in Europe) but many Home theater users don't want spend so much money. So, I thought because that price maybe these JBL aren't so popular on forums.

Then user Bubbrik thought I was talking about Control 238C costing 150$. Not at all. I meant these speakers weren't so popular because didn't cost 150$

Sorry again!
 

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I purchased one 328 from [email protected] 140 to try out. I will get it installed and report back. They look like they require quite a bit of depth.

I should be getting it next week.
Yeah, they're about 6.5 inches deep. All of the dimensions are in the pdf I linked earlier.
 

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Yeah, they're about 6.5 inches deep. All of the dimensions are in the pdf I linked earlier.
I think it goes quite a bit deeper with the back cans correct? I think 8.6" depth with the back can.

I'm going to install with the back can to maximize the sound quality.
 

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I think it goes quite a bit deeper with the back cans correct? I think 8.6" depth with the back can.

I'm going to install with the back can to maximize the sound quality.
If you can manage your ceiling, you may build a customized box with just the advised volume (about 1 cubic feet), no need to be as deep as the back can is.
 

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Oh Sorry! What a confussion!



Let's see.

User Point 1 said on his first thread : "I did a search and several AVS forum users have used these speakers for Atmos but I can't really find a good thread or post that provides a clear and detailed review and feedback. "



I answered to him: "People doesn't talk about these speakers because the vast majority doesn't want spend more than 150$ on a single in-ceiling speaker." I meant these JBL's cost at least 300$/u (I paid 375€ in Europe) but many Home theater users don't want spend so much money. So, I thought because that price maybe these JBL aren't so popular on forums.



Then user Bubbrik thought I was talking about Control 238C costing 150$. Not at all. I meant these speakers weren't so popular because didn't cost 150$



Sorry again!


Since these are jbl pro speakers, I thought that some dealers may be selling them at a lower price. As Darrell noted, looks like they can be had for that lower price used. Don’t be sorry, you were only sharing your thoughts and I got on the price tangent.


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If you can manage your ceiling, you may build a customized box with just the advised volume (about 1 cubic feet), no need to be as deep as the back can is.
If you look at the JBL backcan description, the overall volume is 1cuft, but the net internal volume is 0.71 cuft. If you're building your box, I would think the target for net volume needs to be 0.71 cuft.

1 Cubic Ft. Backcan
for Control 300 Series
8 in. Drivers
EXTERNAL VOLUME
1 cu ft., nominal
INTERNAL VOLUME
.71 cu ft.
KNOCKOUTS
22.1 mm (0.87 in) diameter opening
Five (5) locations:
1 on top panel
4 on side of can
 

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If you look at the JBL backcan description, the overall volume is 1cuft, but the net internal volume is 0.71 cuft. If you're building your box, I would think the target for net volume needs to be 0.71 cuft.

1 Cubic Ft. Backcan
for Control 300 Series
8 in. Drivers
EXTERNAL VOLUME
1 cu ft., nominal
INTERNAL VOLUME
.71 cu ft.
KNOCKOUTS
22.1 mm (0.87 in) diameter opening
Five (5) locations:
1 on top panel
4 on side of can
I think net volume of 0,71 cubic feet is including the acoustic damping material (rock wool or similar). Without it, volume should be bigger (after all, the back can walls are made of a thin metal sheet).
 
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