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Junior Varsity
Best budget amp(s) for pair of secondhand 18" subs?
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<blockquote data-quote="Tim Woodle" data-source="post: 206277" data-attributes="member: 11681"><p>Hi!</p><p></p><p>First post alert... Apologies for cutting to the chase!</p><p></p><p>I've bought a pair of secondhand Martin Audio S18+ subs:</p><p></p><p><a href="https://martin-audio.com/downloads/datasheets/s18+datasheet.pdf" target="_blank">https://martin-audio.com/downloads/datasheets/s18+datasheet.pdf</a></p><p></p><p>TYPE Compact, vented sub-bass system</p><p>FREQUENCY RESPONSE (1) 40Hz-120Hz ± 3dB</p><p>-10dB @ 35Hz</p><p>DRIVERS 18” (460mm)/4” (100mm) voice coil LF driver</p><p>RATED POWER (2) 750W AES, 3000W peak</p><p>RECOMMENDED AMPLIFIER MA9.6K</p><p>SENSITIVITY (3) 102dB (half space)</p><p>MAXIMUM SPL (9) 130.5dB continuous, 136.5dB peak (half space)</p><p>NOMINAL IMPEDANCE 8 ohms</p><p></p><p>The rest of my system (HK Audio / db Technologies) is powered so this is my first venture into the world of independent amplification! </p><p></p><p>I understand the basic principles of ohms, watts and the like, and have been trying to research amps at the budget end of the scale that will do the job.</p><p></p><p>I know Behringer is still a relatively dirty word in the pro-PA world but here are the options / approximate prices that I've found so far. Bear in mind that the choices / availability are limited as I'm based in Dubai.</p><p></p><p>Behringer NU3000 (Assume 2 required) @ 1000AED ($270) each</p><p><a href="https://www.music-group.com/Categories/Behringer/Power-Amplifiers/Portable-Amplifiers/NU3000/p/P0B1P" target="_blank">https://www.music-group.com/Categories/Behringer/Power-Amplifiers/Portable-Amplifiers/NU3000/p/P0B1P</a></p><p></p><p>Behringer EP4000 (Maybe 2 required?) @ 1500AED ($408) each</p><p><a href="https://www.music-group.com/Categories/Behringer/Power-Amplifiers/Portable-Amplifiers/EP4000/p/P0A37" target="_blank">https://www.music-group.com/Categories/Behringer/Power-Amplifiers/Portable-Amplifiers/EP4000/p/P0A37</a></p><p></p><p>QSC GXD 8 @ 3000AED ($815)</p><p><a href="https://www.qsc.com/live-sound/products/power-amplifiers/gxd-series/gxd8/" target="_blank">https://www.qsc.com/live-sound/products/power-amplifiers/gxd-series/gxd8/</a></p><p></p><p>Behringer NU12000DSP @ 3200AED ($870)</p><p><a href="https://www.bhphotovideo.com/c/product/969920-REG/behringer_nu_12000dsp_inuke_nu12000dsp_ultra_lightweight_high_density.html" target="_blank">https://www.bhphotovideo.com/c/product/969920-REG/behringer_nu_12000dsp_inuke_nu12000dsp_ultra_lightweight_high_density.html</a></p><p></p><p>My aim is to get the best suited amp(s) for the money. If I understand the basic phsyics well enough then I need a genuine 1500W per channel at 8 ohms, be that bridged or otherwise. Am I correct in saying that a single 3000W bridged amp at 4ohms would also suffice if the speakers were wired in parallel? I'm also concerned that the NU12000DSP will require a high amp electrical circuit which my regular venue will not be able to supply. Is two NU3000 in bridged mono an option? That would give 1250W at 8 ohms on both sides.</p><p></p><p>All advice much appreciated!</p><p></p><p>Cheers,</p><p></p><p>Tim</p></blockquote><p></p>
[QUOTE="Tim Woodle, post: 206277, member: 11681"] Hi! First post alert... Apologies for cutting to the chase! I've bought a pair of secondhand Martin Audio S18+ subs: [url]https://martin-audio.com/downloads/datasheets/s18+datasheet.pdf[/url] TYPE Compact, vented sub-bass system FREQUENCY RESPONSE (1) 40Hz-120Hz ± 3dB -10dB @ 35Hz DRIVERS 18” (460mm)/4” (100mm) voice coil LF driver RATED POWER (2) 750W AES, 3000W peak RECOMMENDED AMPLIFIER MA9.6K SENSITIVITY (3) 102dB (half space) MAXIMUM SPL (9) 130.5dB continuous, 136.5dB peak (half space) NOMINAL IMPEDANCE 8 ohms The rest of my system (HK Audio / db Technologies) is powered so this is my first venture into the world of independent amplification! I understand the basic principles of ohms, watts and the like, and have been trying to research amps at the budget end of the scale that will do the job. I know Behringer is still a relatively dirty word in the pro-PA world but here are the options / approximate prices that I've found so far. Bear in mind that the choices / availability are limited as I'm based in Dubai. Behringer NU3000 (Assume 2 required) @ 1000AED ($270) each [url]https://www.music-group.com/Categories/Behringer/Power-Amplifiers/Portable-Amplifiers/NU3000/p/P0B1P[/url] Behringer EP4000 (Maybe 2 required?) @ 1500AED ($408) each [url]https://www.music-group.com/Categories/Behringer/Power-Amplifiers/Portable-Amplifiers/EP4000/p/P0A37[/url] QSC GXD 8 @ 3000AED ($815) [url]https://www.qsc.com/live-sound/products/power-amplifiers/gxd-series/gxd8/[/url] Behringer NU12000DSP @ 3200AED ($870) [url]https://www.bhphotovideo.com/c/product/969920-REG/behringer_nu_12000dsp_inuke_nu12000dsp_ultra_lightweight_high_density.html[/url] My aim is to get the best suited amp(s) for the money. If I understand the basic phsyics well enough then I need a genuine 1500W per channel at 8 ohms, be that bridged or otherwise. Am I correct in saying that a single 3000W bridged amp at 4ohms would also suffice if the speakers were wired in parallel? I'm also concerned that the NU12000DSP will require a high amp electrical circuit which my regular venue will not be able to supply. Is two NU3000 in bridged mono an option? That would give 1250W at 8 ohms on both sides. All advice much appreciated! Cheers, Tim [/QUOTE]
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