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2044 posts

Uber Geek


#61827 24-May-2010 20:23
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Im looking at replacing the centre speaker in the logtech set for a Diamond 9 series centre speaker.

So is it possible to wire the centre speaker to be able to connect via RCA?

Reasons are simple, I want to start the path to upgrade but cant afford 2-3K to do it properly (receiver plus speakers). So was thinking replace the speaker that gets used the most.

So will there be enough power in the Logitech system to power it?

Should I just keep on saving?


CPU: Intel 3770k| RAM: F3-2400C10D-16GTX G.Skill Trident X |MB:  Gigabyte Z77X-UD5H-WB | GFX: GV-N660OC-2GD gv-n660oc-2gd GeForce GTX 660 | Monitor: Qnix 27" 2560x1440



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7116 posts

Uber Geek


  #334367 25-May-2010 10:30
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The home theatre in a box type units, or a set of amplifier speakers have in built compensation for the non linear response of the attached speakers. They can do this because they know what speakers will be attached as they are supplying them, so they can modify the output signal to suit the strengths and weaknesses of their speakers.

If you change the speaker, you will be introducing a different response unit which will not be matched to the signal being output.

At the risk of sounding boring I initially was going to say keep saving only, but you know today $2-$3k is totally enough to get a good sounding setup, especially if you're coming from a logitech set. Go to JB Hifi and see what you can find, or talk to Paul Money etc etc. A set of wharedale 9's should be about a grand to $1300 wouldn't you say, and that leaves like $700 or so for a receiver. The new model Onkyos do all the modern HD audio formats for example, and I'm sure others do too.

That leaves a grand for other stuff, like a sub etc, but I think you still get that little cube thing with the Wharfedales anyway.

JB has a Sony bluray player for $244 with wireless built in at the new Palmy store. And they're selling a 50" Panasonic Plasma full HD with freeview built in for $1,777. For $3-$4k you can get an awesome setup pre 3D TV's ......

Sorry, just my $0.02's worth.

2260 posts

Uber Geek


  #334386 25-May-2010 11:06
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I don't think you'll have enough power in the X530 series sorry, I had the X530, now I've got the G51(for my PC) and it has no where near as much power as my home theatre PC

I reckon just keep saving :) and wait for the Pre-GST sales, they will be some ones to watch :)

I picked up my onkyo SR-576B almost 2.5 years ago at $400 on sale, my diamond 9s were: Fronts $220, rears $120, centre $109, sub $375 on a upto 75% off clearance at LVs before hte big recession crash. but they still sound good 2.5 years later ;)

I have moved across the ditch.  Now residing in Melbourne as a VOIP/Video Technical Trainer/Engineer. 


292 posts

Ultimate Geek

  #334494 25-May-2010 13:44
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I enjoy my Logitech z-5500 system. A $650 upgrade?


  • Total FTC power: 70 watts RMS
    Left/right: 7.4 watts RMS x 2 (into 4 ohms, @ 1 kHz, @ 10% THD)
    Center: 15.5 watts RMS (into 4 ohms, @ 1 kHz, @ 10% THD)
    Rear left/right: 7.4 watts RMS x 2 (into 4 ohms, @ 1 kHz, @ 10% THD)
    Subwoofer: 25 watts RMS (into 4 ohms, @ 100 Hz, @ 10% THD)

  • Total peak power: 140 watts

  • Frequency response: 40 Hz–20 kHz


  • Total FTC power: 505 watts RMS
    Sub-woofer: 188 watts RMS (into 8 ohms, @ 100Hz, @ 10% THD)
    Left/Right: 62 watts RMS x 2 (into 8 ohms, @ 1khz, @ 10% THD)
    Center: 69 watts RMS (into 8 ohms, @ 1kHz, @ 10% THD)
    Rear Left & Right: 62 watts RMS x 2 (into 8 ohms, @ 1kHz, @ 10% THD)

  • Total Peak power: 1010 watts

  • Maximum SPL: >115 dB

  • Frequency response: 33 Hz — 20 kHz

Sounds nice via my ALC889 analog out.

HTPC: Antec Fusion 430, Gigabyte GA-MA78GPM-UD2H F7, AMD X2 4850e, Sapphire 4670 1GB, Corsair 4x1Gb,  Adata 128Gb SSD, WD10EARS Green, LG GGC-H20L Blu-ray, Hauppauge NOVA TD-500, Logitech z-5500, Logitech Harmony 525, Samsung LA40B530 1080p, Vista Premium-32 SP2, Catalyst 10.12(Facelift preview), Mediaportal 1.2.3+OneButtonMusic, AC3Filter, Cyberlink Powercinema 6 codec, BLU-RAY: Samsung BD-F7500

860 posts

Ultimate Geek
Inactive user

  #334500 25-May-2010 13:55
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Should I just keep on saving?


Keep on saving.


2044 posts

Uber Geek


  #334877 26-May-2010 07:01
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Thanks guys, as expected I shall keep saving those pennys.

CPU: Intel 3770k| RAM: F3-2400C10D-16GTX G.Skill Trident X |MB:  Gigabyte Z77X-UD5H-WB | GFX: GV-N660OC-2GD gv-n660oc-2gd GeForce GTX 660 | Monitor: Qnix 27" 2560x1440



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Master Geek

  #337745 3-Jun-2010 12:26
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i was facing a similar situation about a year ago. i hooked up my PC, PS3 to a hdTV. i had a sony home theatre system but it doesn't offer many input options - no optical audio input and only one hdmi output. So i had to connect my PC with it using analog for Audio, and then connect to tv using dvi-hdmi. For PS3, i had to bypass the home theatre completely.

so the first step of my upgrade was to get a decent recevier. i bought a display model from JB for about $800, it's a SONY DA2400 (can't remember the full model name). then connected all my sony home theatre speaker to it. of course due to the sub being a passive one, i have to ignore it. sound quality improved, and i can hook up all my devices to the receiver using optical and hdmi, and output audio to home theatre speakers and video to tv. i can even connect my PS2 to the receiver via component and optical cable and get it to upscale the graphic to 1080p. I used to connect ps2 to my tv using component cable but the graphic was pretty zig-zaggy. all worked really well.
just recently i spent about $700 for a set of front and center Wharfdale 9 series - the series which has bi-wire function not the lowest model - from Paul Money as they are clearing 9 series stock for 10 series. great sound quality - i'm not hifi fan, at least not now, so the 9 series is pretty good to me ^_^
so that's $1500. planning to spend another 400 to 500 bucks on a sub. total upgrade will cost less than 2 grand. of course i still need to get surround but i reckon it isn't that critical. you can do it whenever you have some more extra money.

due to tight budget i believe you need to plan the upgrade careful and try best to avoid bottleneck. my $0.02

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