They are designed to attenuate levels and be inserted in one of two places; in between a line level source, such as a CD player, and the pre-amplifier and/or between the pre-amplifier and power amplifier. Share May 20, 2009 at 1:28 PM Post #2 of 12 kuroguy 100+ Head-Fier. Boasting balanced XLR and unbalanced 1/4" outs for easy interfacing, this attenuator/load box was designed to ensure the amp and speaker see each other in a proper relationship of impedance and inductive/capacitive reactance. Now due to the fact that it is almost impossible to set a decent volume and balance on the Croft due to the over sensitive input I have found . . I found Luminous Audio at Capital Audiofest, and Tim Stinson was telling me about his marvelous $400 "Walker Audio" mod for his Axiom II passive. Perfect for your home studio when you want the tube overdrive but not the volume. The KHE amp cab switcher offers safe real-time A/B amp switching and shootouts for your tube heads, even remotely controlled by MIDI. So you can expect a 100-watt amp to blow up a 100-watt attenuator. Universal Audio OX Reactive Amp Attenuator with Speaker Modeling . Run a short speaker cable from the output of the amp to the INPUT of the attenuator. 13 ratings. An attenuator is effectively the opposite of an amplifier, though the two work by different methods. The line out has a bypassable three-band tone stack and separate volume control. 3.75" tall. This scenario creates using much of the attenuation provided by a preamp. Staff pick - Innovative and Cool. One knob. Power attenuator is placed between amp and speaker and turns some (or all) of the amps output to heat and then reducing the volume of the amp at full power. Not only that, but guitar attenuators change the dynamics and tones produced by your tube amp. Show In Stock Brand Colour Group Price 1 - 23 of 23 Two Notes Torpedo Captor X 8 ohm Compact Reactive Load Box, Attenuator, Cab Sim and IR Loader [ 34] 429.00 Loading. Then, set one or more of the Speaker knobs to the return arrow icon (position 5). All you have to do is place a 70v transformer on the amps speaker outputs backwards, that is the amp drives into the secondary and the primary becomes the 70v line. Shipped with USPS Parcel Select Ground Variable gain amplifiers to meet your varying performance requirements Gains up to 1000V/V and bandwidths to 4 I'm interested in R1=2R2 i Corry Micronics manufactures precise fixed, digitally programmable and voltage variable attenuators that can handle up to 200 Watts average power and attenuate up to 60dB, with up to . 100-watt Precision-compensated Reactive Power Attenuator with DI Output, Analog Cabinet Simulation, Dual Impedance Controls, Solo Mode, Presence Switch, Bypass Mode, and Line Output, $795.00, Or $23.00/month with, 36 mo. Gear | Feedback. High-strung 100 watt Marshalls can blow very easily if you drive them hard with only a load box. At the same time, a counter-resistance is placed in parallel with the driver to maintain a constant impedance which allows the original crossover design to be used. 30-watt attenuator offers cranked tone and response at whisper volumes; Reactive load technology maintains the relationship between amp and speaker; Custom-designed, transformer-coupled signal flow; Foot-switchable Solo Mode offers a boosted level with the tap of your toe; 3-position Presence switch dials your amp's top-end character They replicate the ohm load of a speaker so the amp doesn't "know the difference". An attenuator is an electronic device that reduces the power of a signal without appreciably distorting its waveform . It will work with pretty much any combo amp that has a removable back panel, like Fenders, and the mod is easily done. Home speaker wire is typically thicker than car speaker wire. $1,999.00. This device is called a power attenuator. The most common method is to use a power attenuator, which is a device that sits between the amp and the speaker and allows you to dial down the power output of the amp. The Universal Audio Ox Amp Top Box is a reactive load box designed for electric guitarists.It lets you play and record your tube amplifier at ideal volumes and tonal sweet spots, allowing you to do so at levels commensurate with not annoying all of your loved ones or neighbors. #2. yes if the speakers have a 1/4 that goes to the amp, for instance my Peavey Classic 50 has that, instead of the speakers being permantly connected to the amp, a 1/4 cable is wired to . Only, . So multiple things affect the tone and feel: amp, cabinet, speakers, and impedance curve. Its for 8 ohms, and a max of 25 watts. I've used 50k pots/attenuators in headphone amps (without fully understanding why) but I'm just a little confused as to which attenuator to get for this speaker amp. Designed to be placed between your amp head and speaker cabinet, it acts as a power attenuator and cabinet simulator, and is packed in a DI-sized enclosure. Is there a difference between home and car speaker wire? Then, connect the other end of the cables to the amplifier rear for the audio input. The de Lisle Amp-Speaker 8x6 Pro was designed to improve workflow in the studio by eliminating the need to re-cable amps, fx and cabs. Brand: Rivera. Weber Mass. 130 IQ. Adjustable load so you can drive your amp hard but keep the volume bedroom safe. 4 channels from the amp to the radio's factory speaker wiring. Set the attenuator in the bypass mode. Placed between the amp and the speaker, the attenuator's . Save: $80.00 (23%) $269.99. Today, Friday 12th November 2010, I managed to get my slightly redundant Croft Series Seven power amp fixed and up and running again but as a part of this process, I fitted a pair of Goldenjacks -14db attenuators to the pre amp input of the CD output. Universal Audio Universal Audio OX Amp Top Box - Reactive Load Box / Attenuator. By reducing the power to the speaker, a power attenuator reduces the volume without altering the overdriven quality of the tone. $1,299.00. "Rig" controls elects six customizable mic/cab/FX combinations. Inside the attenuator is a "ladder type" resistor network that reduces the attenuation by 10dB through this plug. Allows you to achieve cranked-amp tones at any volume level. 142067-525, In line Attenuators with Passive Preamps, Most digital sources output 2 volts or more. RIVERA, $549, Buy Now, From Your Site Articles, I was very curious, naturally, and in a move of sheer awesomeness, he's sending me one to play with. Compatibility: all mono Tube & Solidstate Amps, Heads & Combos, Attenuators and Load Boxes up to 150 W . Use more efficient speakers (speakers that produce a higher dB volume at 1W of power - higher is better) Add more speakers if you have an amplifier that can support it Use higher-power rated speakers and a larger power amplifier if a lot more volume is your goal There's one 10 inch speaker on board, six 12AX7 preamp tubes, and two EL84 power tubes. Harley Benton PA-250 Power Attenuator 12 Allows playing a tube amp with high output level for optimal performance, but with reduced volume Can be used as a dummy load Useful tool for rehearsal, live performance and direct recording In stock TOP SELLER 129 Universal Audio OX Amp Top Box 108 Analogue reactive loadbox for guitar tube amplifiers $1,299.00. Most combo amps have internal speakers that can be unplugged from the amp chassis using a 1/4 phone plug. The Ironman II preserves every ounce of the tone and feel of your amplifier, for . A power attenuator converts some of the sound energy created by the amp into heat energy before it reaches the speaker. However, if you are a fan of more advanced techniques and meatier sounds with heavy distortion, the guitar power attenuator becomes an important component in your setup. 3.35 lbs basic. This simple mod will allow you to quickly and easily hook up an attenuator to your combo amp. Search: Amplifier Power Attenuator. Speaker soakers and attenuators are tricky pieces of gear upfront. Contents, 1 Construction and usage, Connect the tube amplifier, attenuator and speaker as usual. Compare. A pre-amp is for small sources: phono needle, microphone, tape head. The Rivera Rock Crusher is one of the best attenuators out there. 5.5" x 5.5" footprint (add 1" in front for knob). The reduced wattage that isn't converted to heat is then sent to the speaker. Item is in working condition. Traditional Tuners already made a Volt or more of output and did not need the preamp. For many guitarists, especially in heavier styles of music, the power attenuator goes hand-in-hand with the amplifier. Another method is to use a impedance-matching transformer, which allows you to match the impedance of the amp to that of the speaker, which can help to reduce the overall volume. For 50 watts at 8 ohms, it's 20V and 2.5A. L-pads are to be placed in between the amplifier and speaker, or . DI XLR and " line-level outputs.. It boasts 25W of total power, and a 10W triode setting when you want cranked sound at low power. To start, it has both 8-ohm and a 16-ohm mode, which allows you to use it with any amplifier. Excellent Condition!! In the pictures here the amp is my Traynor YGM-3A. The RockCrusher is invaluable & unbeatably versatile because you can place it between your amp & speaker cab as a power attenuator, or use it in place of your speaker cabinet as a load box while sending its balanced XLR or unbalanced " line out to . Firstly, they will work, because of the prior assumption. A loud-speaker is easier on the amp then a purely resistive 8 ohm load. Must place the attenuator on the topmost spaces of the rack to allow proper ventilation. So after using my couple of Sony TA-E86B preamp and TA-N86B class A power amp for a while, replacing the Technics SE-A5 and Korn&Macway sP100, I had the idea of trying the SP100 preamp with the little Sony amp. High gain and Goldenjacks attenuators. Attach these wings to the sides of your attenuator, and you can mount it in a standard 19 rack. Posted by KanedaK (A) on April 11, 2014 at 05:03:09 . More on this in a moment. The most common approach to power attenuation is a power soaker, which absorbs a portion of the power and dissipates it as heat. (figure below) The attenuator could be built into the signal generator, or be a stand-alone device. Overall Build: The Mark Five is a two-channel tube amp constructed from Black Taurus Vinyl with Black Jute Grille. You will get almost the same tone as when playing the amp at full volume only not that loud. Turn the amplifier on after connecting them. July 22, 2000. Its purpose is to send a reduced signal to the speaker, which will result in a lower volume, while allowing the amplifier to work as normal. Step 3: Find the installation CD for the DAC drivers and put it into the computer CD-ROM. Featuring a complete set of connections . A solid state amp will do but a tube amp is better. Power attenuators are placed between the power amp and the speaker section of a guitar amp. The PRX150-Pro has been superseded, with the PRX150-Pro2 and PRX150-DAG attenuator products. The Ironman II's Line-Out and DI outputs provide a line-level signal that can be used to drive another amplifier, mixing board, recording interface, or any other line-level input. Loaded with a 'silent speaker', Weber's most robust attenuator has a main volume knob and three-position treble compensation switch. By turning the speaker control to minimum (maximum attenuation), the unit may be used as a dummy load for testing or for DI use. The tradeoff is some power loss, but since the objective is to reduce volume output and attenuate, in theory, it essentially becomes a non-issue. de Lisle Amp-Speaker Selector 8x6 Pro. Let's assume all that is lined up like for like; there are many other factors. They mess with the relationship between the tube amp, output transformer, and speaker voice coil which is where the sweet, creamy, and desirable tones of an overdriven tube amp come from! Answer (1 of 8): It actually depends not only upon their Watt rating but also upon their impedance and what the amp is rated for supplying power into. Resistive, If the attenuation control is a rotary step switch and if the first step is less than 3 db of . If we switch to 8 ohms' impedance, we have a power adjustment and consequently slightly lower voltage. Impedance options are 2, 4, 8 and 16 ohms, and the attenuation is continuously adjustable from -3dB to over -70db. The pre-amp is to bring small sources up suitable for a Volume control. Score! Line Out jack has no volume control and is dependent on . One method of lowering the volume of a cranked amplifier is to place a device inbetween the output of the amp and the speaker or speakers it's driving. Parts Express Speaker L-Pad Attenuator 100W Mono 3/8" Shaft 8 OhmL-pads adjust the relative volume of drivers connected to them by placing added resistance in series. Feed the output of your load device to your fx rack then into a power amp and speaker cab. Even with a perfect, noiseless source and preamp, the absolutely lowest noise level that can occur at the amplifier input is about -133dBv (noise from 150-ohm source at 20KHz bandwidth). What is the disadvantage? Reactive load box for tube amplifiers with built-in speaker emulation. Complete the installation by following . 1. We have created for you a rating of the Best 29 Guitar Amp Attenuators, Equipment list navigation: Fryette Power Station PS2, Rivera RockCrusher Gold, Fryette Power Station 100, Tone King Ironman II Attenuator, Two Notes Torpedo Captor 4 Ohms, Mesa Boogie CabClone IR+ 8 Ohms, Koch Amps LB120-II/4, Universal Audio OX Amp Top Box, Suhr Reactive Load, COMBO AMP: When using an attenuator with a combo amp, place the unit between the amp's speaker out and the speaker itself. If you have the power amp, that would be the cheaper way to go, if not, get a Bad Cat Unleash or PS, run one speaker out from your amp directly to the speaker, then the second to the re-amp, effects, second speaker.