Question TX-RZ830 for village hall

scotallan

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Hi all,

I've been involved with setting up a community cinema in our local village hall. I've managed to get a grant of £3000 to get some better audio equipment installed and was eyeing the TX-RZ830 in 7.1.4 configuration. This package seems like a decent deal and I'll need to add cabling and a few more speakers for the rear and height.

Its aimed as a home package, but will it delivery enough power / volume with those speakers for our community cinema? The venue size is 16x8x5.6m. I don't need serious volume - we aren't going to be showing action films, but will be showing drama, musicals, etc (its a community cinema!).

Thanks,
Allan
 
I think you're being wildly optimistic, to put it mildly.

The room you describe is approximately 52ft L x 26 ft L x 18ft H (in the old money), which is about twenty times the volume of a decent sized living room, or to put it into perspective the size of a smaller sized cinema in a multiplex.

Ask yourself - could a small, modestly specified AVR (or any AVR designed for home use, for that matter) come anywhere near to cutting the mustard in that environment?

You then are left with about £2,000 from which you intend to buy eleven (count'em) speakers and a subwoofer (not to mention the enormous amount of cabling needed to wire a 7.4.1 system in a room that size). Like the amplification, these would need to be speakers capable of moving enough air to fill that room with adequate sound levels.

Given your choice of amplifier, no matter what speakers you choose, you'd end up overdriving the amplifier into a very early grave in an attempt to fill that room with adequate sound levels. Having worked with PA systems in venues similar to yours, I can assure you that a £3,000 home cinema setup (particularly with 7.4.1 channels) would have all the impact of a fart in a hurricane. And that is before your amp dies from being overdriven.

Furthermore given the types of films you intend to screen, quite what you'd want with a 7.4.1 system in the first place, I don't know.

Given the size of your venue and your budget, I'd forget home cinema kit completely and I'd forgo the pipe-dream of a 7.4.1 system and focus on a the best quality 2 channel P.A. system that you can get for your money.

Your priority is to move air and to fill a room with adequate sound levels, so you need to be thinking of lots of power allied to BIG speakers, producing reasonable sound quality and not to worry about the finer niceties of the latest home cinema audio formats .

Given that something like a pair of these active towers, will set you back around £1,300...

SubZero 15" Active DSP Speaker and 18" DSP Subwoofer at Gear4music

... that leaves you with £1,700 in the kitty which is more than enough for a decent P.A. mixer, cables, etc. In fact, as you don't need a mixer with more than 4 channel capacity (2 channels for your movie sound and one for your microphone for announcements, etc, you could afford to spend even more of your budget on better speakers/amplification.

You need to be speaking to a dealer that specialises in this sort of equipment and not a home cinema dealer.
 
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Sorry Allan, I just noticed that you linked to a proposed system.

That would be a more than adequate system in anyone's living room, but in a venue of the proportions you describe, again, the fart in a hurricane analogy still applies.
 
I've been involved with setting up a community cinema in our local village hall. ... was eyeing the TX-RZ830 in 7.1.4 configuration. Its aimed as a home package, but will it delivery enough power / volume with those speakers for our community cinema? The venue size is 16x8x5.6m. I don't need serious volume - we aren't going to be showing action films, but will be showing drama, musicals, etc (its a community cinema!).
The room is large, but the equipment was designed for a (small) domestic room. You will sink £3000 for nothing, as Mr Lime graphically illustrates with his metaphor. I'd have compared it with moving house using a bicycle.

You need to speak with somebody involved in professional audio, specifically for halls and the like. They will help you to find a proper public address / sound reinforcement system. These use different speaker technologies over a different delivery technology (keyword: "100V system"), and are designed to function in the 760m3 hall you have.

Don't you already have speakers installed (e.g. for public address purposes), which you could repurpose? It would save a lot of purchase and/or installation costs if you could reuse existing infrastructure.
 
Perfect! Thank you for the candid reply and your insights! I'm very much at enthusiast level... :).
 

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