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wtaylorbasil 10-13-18 01:11 PM

HT Center Speaker Matching with Front Speakers
 

My HT setup is 5.1
My sitting room is 14LX12Bx8H (normal English home). I have 2XIMF TLS 80 Transmission Line Speakers ( about 1976), Onkyo TX-NR609 Receiver, small 1XYamaha Front and 2Xsmall Yamaha Rear speakers. I have a small Yamaha Sub but I do not use it.
Reading the thread, center speaker should be matched with the 2 front speakers. I feel my center is ok but not as good as I would like it to be.
How do I go about finding a center speaker that will match with the fronts with spec as this:STUDIO TLS 80

Dimensions
Free Standing with Plinth; 38 1/2" x 16" x 18" wide

Drive Units
Bass unit 11 3/4" x 8 1/4" flat polystyrene diaphragm loaded by transmission line
mid range unit 6" plastic cone containing in separate line
tweeter 1 3/4 " diaphragm
3/4" chemical dome super-tweeter

Crossover
Electrical four way at 375 Hz , 3.5 kHz and 15 Khz

Frequency Range
20 Hz to beyong audibility

Matching Impedence
4 - 8 ohms (see graph)

Efficiency Measured via Pink Noise at 1 metre on axis for 40 watts
96dB

Driving Power Requirements
40 - 80 watts
I would be grateful for any suggestions.
Regards
2Ch Good Music
Fight Loudness War. Preserve Dynamic Range.

William

Kal Rubinson 10-13-18 03:42 PM

Re: HT Center Speaker Matching with Front Speakers
 

I would look for British speakers of the vintage with KEF/Bradford mids/woofers and KEF/Celestion/STC HF drivers.

theJman 10-13-18 04:59 PM

Re: HT Center Speaker Matching with Front Speakers
 

I suspect you will have quite a challenge to match 40+ year old TL speakers; if the age isn't enough of an obstacle, a TL alignment will certainly be. About the only commercially available speaker I know of that's even close to a transmission line is the Atlantic Technology AT-2, but I don't know how well that would match with your current speakers.

Does your receiver have the ability to create a 'phantom' center? If so, that might be your best option. I personally don't think they work as well as a real center does, but it may be worth considering.

Kal Rubinson 10-13-18 05:53 PM

Re: HT Center Speaker Matching with Front Speakers
 

Quote:

theJman wrote: (Post 1611408)
I suspect you will have quite a challenge to match 40+ year old TL speakers; if the age isn't enough of an obstacle, a TL alignment will certainly be.

I doubt that. First of all, the TL affects only the low bass and will not be particularly relevant for timbre matching over the significant part of the spectrum. Second, there are TL speakers available today but, as noted, that only affects the low end of the woofer.

theJman 10-13-18 07:45 PM

Re: HT Center Speaker Matching with Front Speakers
 

Quote:

Kal Rubinson wrote: (Post 1611410)
I doubt that. First of all, the TL affects only the low bass and will not be particularly relevant for timbre matching over the significant part of the spectrum. Second, there are TL speakers available today but, as noted, that only affects the low end of the woofer.

So what TL speakers are currently available that could match the voicing of his 40 year old speakers then? I still contend no such animal exists.

Kal Rubinson 10-13-18 10:29 PM

Re: HT Center Speaker Matching with Front Speakers
 

Quote:

theJman wrote: (Post 1611414)
So what TL speakers are currently available that could match the voicing of his 40 year old speakers then? I still contend no such animal exists.

PMC for one. However, they will not match the voicing because the voicing has nothing to do with bass loading. I stand by the suggestions in my original reply.

theJman 10-13-18 10:43 PM

Re: HT Center Speaker Matching with Front Speakers
 

The OP's original question was about a center that would timbre/voice match with his current speakers. Bass loading is a minor consideration in respect to what he is attempting to achieve.

wtaylorbasil 10-14-18 08:53 AM

Re: HT Center Speaker Matching with Front Speakers
 

Quote:

theJman wrote: (Post 1611408)
I suspect you will have quite a challenge to match 40+ year old TL speakers; if the age isn't enough of an obstacle, a TL alignment will certainly be. About the only commercially available speaker I know of that's even close to a transmission line is the Atlantic Technology AT-2, but I don't know how well that would match with your current speakers.

Does your receiver have the ability to create a 'phantom' center? If so, that might be your best option. I personally don't think they work as well as a real center does, but it may be worth considering.

I had a look at the AT-2 and it goes down to very low frequency output.
May be I ought to ask a more "fundamental" question. Center speaker handles the speech section and that should be enough with less than 200Hz to may be 2.5KHz. So why do we need a full range speaker. Once I understand this may be I can move on.
Thanks

Kal Rubinson 10-14-18 08:57 AM

Re: HT Center Speaker Matching with Front Speakers
 

Quote:

theJman wrote: (Post 1611418)
The OP's original question was about a center that would timbre/voice match with his current speakers. Bass loading is a minor consideration in respect to what he is attempting to achieve.

Yes. I have been saying that, too.

Quote:

wtaylorbasil wrote: (Post 1611428)
May be I ought to ask a more "fundamental" question. Center speaker handles the speech section and that should be enough with less than 200Hz to may be 2.5KHz. So why do we need a full range speaker.

There is more in the center channel than voice.. Having a speaker with a very limited range (e.g., 200Hz to 2.5KHz) in and of itself will severely limit its abilities to maintain a consistent timbre match across the front.

wtaylorbasil 10-14-18 09:00 AM

Re: HT Center Speaker Matching with Front Speakers
 

Quote:

Kal Rubinson wrote: (Post 1611406)
I would look for British speakers of the vintage with KEF/Bradford mids/woofers and KEF/Celestion/STC HF drivers.

As I have responded to theJman in my post 8. Do I need a full range speaker to match?
Can you help me understand this philosophy?
Thanks


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