Den stora Thomann Online-Rådgivaren: PA-Amps

2. Overview

You could sum up the whole idea of a PA power amplifier in a single word - sound. The power amp is a crucial part of a musician’s live sound. Clarity and quality are more important than volume - even a low volume sound that is distorted is uncomfortable to listen to, whereas a rich, clear sound can fill a large room without driving away the audience.

Technically, a power amp - sometimes known as an output stage - is there to amplify the signal from the mixing desk so that it’s strong enough to drive the PA speakers. The ideal power amp is small and light, but very powerful. It should also be highly efficient, so that it does not require excessive cooling. Inevitably, compromises must be made between all these factors, but there are some superbly engineered models available today that deliver substantial power efficiently and in a manageable form.

Power amps that are well matched to speakers have relatively little impact on the total quality of the sound. Microphones, effects and EQ will have a much greater effect on the fine detail of the sound spectrum, although the more complex that spectrum is, the harder the amp’s job will be.

The key to a good stage sound is consistent stable delivery of the whole signal to the speakers. So the power amp, receiving signals of varying frequencies, must be able to handle a complex load, and move it smoothly out to the front line. At the same time, it must accommodate the load represented by the speakers themselves, a factor made more complicated by the quality of the connecting cables. As far as they are concerned there is a simple rule - the shorter, the better.

Distortion and peaking are the great enemies - your power amp needs sufficient capacity to deal with the highest loads you expect to generate, without delivering a signal that produces a broken sound as soon as it hits the speakers. Naturally, the capacity required depends on the kind of music you are making. You can assume that a heavy metal band will need something more substantial, whereas a string quartet could probably make do with something fairly lightweight, although whatever volume you are playing at, it’s always advisable to have plenty of ‘headroom’.

So you need to consider your requirements carefully, and strike the right balance between performance, portability, and price. Over the next few pages, we’ll give you all the help we can in selecting the right amp for your stage setup.

Din kontaktperson
PA
Tel +49-9546-9223-35
Fax +49-9546-9223-24
Hot Deals Beställ en gratis Hot Deal!

Över 9.100.000 musiker prenumererar redan på Thomann Hot Deals. Börja prenumerera gratis och få tillgång till mer än 400 aktuella erbjudanden!

PA-Amps översikt

Yamaha P-125 BK Boss GT-1000 Line6 Power Cab Plus Dante AVIO AES3 IO Adapter 2x2 Dante AVIO USB IO Adapter 2x2 ADJ PRO-ETBS ProEventTable Bag II Reloop RP 4000 MK2 Yamaha L-125 BK Gator iMac 21" Tote Bag Flyht Pro Rack Drawer 19" 3U 28 cm lock DW SM 2224 Bass Drum Spurs Marshall Origin 50H Head
(1)
Rekommenderat
Yamaha P-125 BK

Stage Piano Graded Hammer Standard Keyboard (GHS) with 88 weighted keys, Pure CF Sound Engine, 24 Tones, Max. Polyphony: 192 votes, Dual, split and duo function, Two-track recording (one song), 20 Rhythms (drums + bass), Intelligent Acoustic Control, 21...

Till produkter
545 €
(2)
Rekommenderat
Boss GT-1000

Multi effect pedal 32-bit AD / DA, 32-bit floating-point processor and 96 kHz sampling rate, New BOSS DSP engine, specially developed for audio applications, AIRD (Augmented Impulse Response Dynamics) brings BOSS's Tube Logic concept to a digital guitar processor,...

Till produkter
999 €
(1)
Rekommenderat
Line6 Power Cab Plus

Active Modelling Guitar Box With integrated USB audio interface, With 6 loudspeaker simulations (expandable), Equipped with: 1x 12"speaker and 1" compression driver, Power: 250W @ 8Ω, Frequency range: 70 - 20000 Hz, Maximum level: 128 dB @ 1 m,...

Till produkter
766 €
Rekommenderat
Dante AVIO AES3 IO Adapter 2x2

Y Adapter Transmits two channels each from AES3 to a Dante network and vice versa, RJ45 Metal plug with built-in LEDs, 1 XLR male output, 1 XLR female input, 96 kHz / 24 bit, Robust housing for day-to-day tasks...

Till produkter
170 €
Rekommenderat
Dante AVIO USB IO Adapter 2x2

Dante AVIO USB IO Adapter 2x2; for connecting a computer to a Dante network; perfect for recording or play back a stereo signal; robust housing; fully functional Dante interface; transmits two inputs and two outputs; class compliant

Till produkter
130 €
Rekommenderat
ADJ PRO-ETBS ProEventTable Bag II

ADJ PRO-ETBS Pro Event Table Bag II, Carrying bag suitable for Pro Event Table II, optimally protects against dust and scratches, carrying straps for easy transport, not suitable for the first version of the Pro Event Table, made for #427915

Till produkter
45 €
Rekommenderat
Reloop RP 4000 MK2

Quartz-driven DJ turntable with high-torque direct drive Speeds (RPM): 33 1/3 - 45 - 78, Pitch with selectable range of +/- 8% and+/- 16%, Reverse function, Connections: 1 PHONO output (gold plated) and 1 GND ground connection, Incl. platter,...

Till produkter
289 €
Rekommenderat
Yamaha L-125 BK

Yamaha L-125 BK; stand for Yamaha P-125 BK; colour: Black

Till produkter
127 €
Rekommenderat
Gator iMac 21" Tote Bag

Nylon Bag Fits 21" Apple iMac Water resistant, Good grip and protection with adjustable foam blocks and hard-panel reinforcement in the front flap, Foldable sun and dust protection, Double zipper, Strap and handle cutouts, Reinforced, detachable carrying handles, PVC...

Till produkter
120 €
Rekommenderat
Flyht Pro Rack Drawer 19" 3U 28 cm lock

Flyht Pro Rack drawer 19" 3U 28 cm with lock. Robust and easy glide lockable metal rack drawer. Colour: black, Dimensons: WxHxD 483 x 134 x 280 mm, weight: 6,3 kg

Till produkter
45 €
Rekommenderat
DW SM 2224 Bass Drum Spurs

DW SM 2224 Bass Drum Spurs, for mounting onto bass drum hoop, rubber/metal rod, sold in pairs

Till produkter
56 €
(1)
Rekommenderat
Marshall Origin 50H Head

Tube Amp Head for Electric Guitar Gain boost function, Two voicings (Normal, High Treble), which can be mixed continuously via the tilt control, Switchable power reduction for full sound in any environment, 1 Channel, Power: 50 watts, Preamp tubes:...

Till produkter
645 €
Feedback Har du hittat ett fel eller vill ge oss feedback om denna sida?

Vi ser fram emot att höra från dig och kommer att lösa eventuella problem så snart vi kan.

Lämna kommentar. Ange din e-postadress.