Is the genral rule the smaller the room the less powerfull the AMP you need ?

[jamieuk23]

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Ok I no most people will say more power is better but would buying a powerful amp in a smallish room just be a waist of money ?

I am going to convert my garage which will be 16ft x 10ft in to a cinema room and I will buy one of the new Onkyo amps once most of the work is complete.

Now I am the type of guy were I feel like I am losing out if I just don't buy the most powerful amp out of this range which would be the 875 or 905, and will no doubt be thinking all the time that I should have got more power!!

But am I right in thinking that it would just be a waist of money to buy such a powerful amp in such a small room and the 605 version would be more than anuff ?

I no a lot comes down to the speakers you are using as well... here are my speakers specs - Hopefully you will agree that I don't need the most powerfullest amp and I can buy sensibly

surround sound speakers

Type - Floorstanding speaker canton CD 100
Engineering Principle - 2½-way Bass reflex system
Nom. /Music power handling - 70 / 120 watts
SPL (1 watt/1m) - 86.5 db (1 W, 1 m)
Frequency response - 50...25.000 Hz
Crossover frequency - 400 / 3.500 Hz
Woofer - 2 x 80 mm (3''), aluminum
Midrange - 2 x 80 mm (3''), aluminum
Tweeter - 1 x 15 mm (1''), aluminum


front and centre speakers canton Cd 360F

Type - Flat speaker
Engineering Principle - 2½-way closed system
Nom. /Music power handling - 110 / 170 watts
SPL (1 watt/1m) - 87.5 db (1 W, 1 m)
Frequency response - 33...30.000 Hz
Crossover frequency - 400 / 3.300 Hz
Woofer - 2 x 110 mm (4''), aluminum
Midrange - 2 x 110 mm (4''), aluminum
Tweeter - 1 x 25 mm (1''), aluminum
Nominal impedance - 4...8 ohms
Dimensions (WxHxD) - 12.5 x 60 x 10 cm
(4.9'' x 23.6'' x 3.9'')

 

[jamieuk23]

and I just thought it was as easy of just choosing a AMP and buying it

As you guys seem to be on the ball ! what Onkyo Amp should I buy out of these specs from looking at the info of my speakers above

Onkyo TX-SR605
Audio Features
• 140 W/Ch Minimum into 6 Ω, 1 kHz, IEC (1 Channel Driven)
• DTS®-ES™ Discrete/Matrix, DTS® Neo:6, DTS® 96/24, Dolby® Digital EX™, Dolby® Pro Logic IIx
• H.C.P.S. (High Current Power Supply) Massive High Power Transformer
• 192 kHz/24-Bit DACs for All Channels
• WRAT (Wide Range Amplifier Technology)
• Advanced 32-Bit Processing DSP Chip
• 5 Digital Inputs (3 Optical/2 Coaxial)
• Subwoofer Pre Out
• CinemaFILTER™
• A-Form Listening Mode Memory
• Optimum Gain Volume Circuitry
• Non-Scaling Configuration
• Tone Control (Bass/Treble) for Front L/R Channels
• Color-Coded 7.1-Multichannel Inputs
• Independent Crossover Adjustment for F/C/S/SB (40/50/60/80/100/120/150/200 Hz)
• Double Bass Function


Onkyo TX-SR705
160 W/Ch, Continuous 6 Ω , 1 kHz, 1 Channel Driven, IEC
• THX Select2™ Certified (with THX Processing)
• DTS-HD® Master Audio, DTS-HD® High-Resolution Audio, Dolby® True HD, Dolby Digital Plus Decoding
• H.C.P.S. (High Current Power Supply) Massive High Power Transformer
• 192 kHz/24-Bit DACs for All Channels
• HDMI (v.1 .3a) Audio and Video Processing
• HDMI Video Upconversion
• Component Video Upconversion
• HDTV-Capable HDMI (3 Inputs and 1 Output) and Component Video (50 MHz) Switching (3 Inputs and 1 Output)
• WRAT (‘Wide Range Amplifier Technology)
• Three Advanced TI 32-Bit Processing DSP Chips
• Audyssey Multi EQ XT to Correct Room Acoustic Problems and to Calibrate Speakers
• Neural -THX Surround Technology for Gaming, Movies and Broadcasting
• Powered Zone 2 and Zone 2 Line-Out for Playback in Another Room
• RS232, IR and l2V Trigger Connectivity


Onkyo TX-SR805
AUDIO FEATURES
• 180 W/Ch Minimum into 6Ω, 1 kHz, IEC (1 Channel Driven)
• DTS®-ES™ Discrete/Matrix, DTS®Neo:6, DTS® 96/24,
Dolby® Digital EX™, Dolby® Pro Logic IIx
• H.C.P.S. (High Current Power Supply) Massive High Power Transformer
• WRAT (Wide Range Amplifier Technology)
• 6 Digital Inputs (3 Optical/3 Coaxial) and 1 Optical Output
• A-Form Listening Mode Memory
• Linear Optimum Gain Volume Circuitry
• Non-Scaling Configuration
• Tone Control (Bass/Treble) for All Channels
• Color-Coded 7.1-Multichannel Inputs and Pre Outs
• Independent Crossover Adjustment for F/C/S/SB (40/50/60/70/80/90/100/120/150/200 Hz)
• Double Bass Function


Onkyo TX-SR875
200 W/Ch, Continuous 6Ω , 1 kHz, 1 Channel Driven, IEC
• THX UItra2™ ’ Certified (with THX Processing)
• DTS-HD Master Audio, DTS-HD© High-Resolution Audio, Dolby© TrueHD, Dolby© Digital Plus Decoding
• H.C.P.S. (High Current Power Supply) Massive High Power Transformer
• VLSC (Vector Linear Shaping Circuitry) for All Channels
• 192 kHz/24-Bit Burr Brown DACs (PCM 1796) for All Channels
• HDMI (v.l.3a) Audio and Video Processing
• HQV Reon-VX Video Processing
• HDMI Upscaling and Upconversion (to 1080p )
• Component Video Upconversion
• HDTV-Capable HDMI (4 Inputs and 1 Output) and Component Video (100 MHz) Switching (3 Inputs and I Output)
• Dual Push-Pull Amplifier Design with 3-Stage Inverted Darlington Circuitry
• WRAT (Wide Range Amplifier Technology)
• Three Advanced TI 32-Bit Processing DSP Chips
• Audyssey MuItEQ® XT to Correct Room Acoustic Problems and to Calibrate Speakers