Pultec Equalizers are some of the rarest and most sought after studio tools in the industry today. Engineers lucky enough to be able to work with them find their musicality and warm tonality extremely important to their studio's "sound." The simple beauty of these EQs is unsurpassed!
The original Pultec equalizers were tools developed to deal with the limitations of recorded music. Limitations that most often manifest themselves in the highest and lowest frequencies of the program material. Pultecs were designed to bring back the life and musicality lost in the recording. Whether by accident or genius, nothing has been able to do it better. The interaction of the passive boosting and attenuating shelving eqs (not relying on negative feedback), as well as the transformers, tubes and other amplification circuitry all add to the incredibly musical character of the product. Working engineers try other types of equalizers, but always end up coming back to the Pultec as the equalizer of choice for those final touches.
Mercury Recording Equipment Co. is committed to recreating every magical nuance of the original in a modern production. The goal was that the Mercury EQ-P1 Program Equalizer would add that magic touch to music like the original, we achieved that goal. Mercury has tried to keep all elements in line with the original designer's ideas with only minor improvements. Adding a couple of extra frequencies for more flexibility and we use DC on the heaters (of the tubes) rather than AC for better performance as well as a new very quiet and stable power supply.
The Mercury EQ-P1 Program Equalizer has transformer balanced input and output, with a fully balanced (push-pull) gain make up amplifier. Our new Mercury production utilizes only the highest quality passive components, while remaining true to the original production.
Interstage Transformer In/Out Switch
The only modernization feature on the unit is a user switchable (in/out) interstage transformer. In the original Pultec EQP this transformer was always in the signal path, however, realizing that some of today's engineers might want to remove it with the Mercury EQ-P1 Program Equalizer it is possible to do so with I.S.T. (Interstage Input Transformer) in/out switch, below the EQ in/out switch on the front panel. This takes the middle (interstage) transformer out of the circuit. Down, in the "in" position, it is more "vintage" like the original Pultec. Up, in the "out" position, it is a little more "open" and "airy" on the top. Either way, the input and output transformers are always in the circuit.
Mercury EQ-P1 Frequencies
- Low Frequency Select (CPS): 20, 30, 60, 100, 200 Hz
- Low Frequency Boost Control: Shelf Boost, 0dB to +13dB
- Low Frequency Attenuate Control: Shelf Atten. 0dB to -17dB
- High Frequency Bandwidth Control: Sharp to Broad
- High Frequency Select (KCS): 2, 3, 4, 5, 6, 8, 10, 12, 16k
- High Frequency Boost Control: Shelf Boost, 0dB to +18dB
- High Frequency Shelf Attenuate Select: 5, 10, & 20k
- High Frequency Attenuate Control: Shelf Attenuate, 0dB to +16dB
Mercury EQ-P1 Vs. EQ-H1. What's the difference?
The Mercury EQ-H1 has a different amplifier than the Mercury EQ-P1 thus it has a different tone. Meaning the EQ-H1 and EQ-P1 sound different on the same application.
The key to the tone of the Pultec circuit is the amplifier, being that the EQ section is passive.
The EQ-H1 is more punchy and robust and the EQ-P1 is more open and silky. Although both sound amazing on any application and they are both multi-purpose tools (equalizers) in the studio, if you had both you could then pick and choose between applications. The Mercury EQ-H1 is warm and fluid but a bit "thicker" than the EQ-P1, thus the EQ-H1 shines on Thickening vocals, Bass, Kick, Snare, and Guitar etc... The Mercury EQ-P1 is great for Shaping vocals, Acoustic instruments, Guitar, Piano etc...
Mercury Recording Equipment Co. has gone to great lengths to recreate the pride and passion of the past, both sonically and aesthetically, while offering the reliability of a present day production. The choices made in looks, layout, functionality, features and build quality all answer back to one question: How would "they" have done it today?
Mercury Recording Equipment Co. products are hand wired and/or assembled using silver solder and no-compromise parts. All Mercury products are transformer balanced, inputs and outputs and there are no I.C.s (chips) in the signal path. The chassis and front panels have a very distinctive "vintage" look with custom powder coating finish. They look as good as they sound!
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