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Pultec EQM-1S3-SS 2-Band Program Mastering Equalizer

BH #PUEQM1S3SS • MFR #EQM-1S3-SS
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Pultec EQM-1S3-SS 2-Band Program Mastering Equalizer
Key Features
  • 30 to 100 Hz Low-Shelf Boost / Attenuate
  • Custom-Taper 21-Step Rotary Switches
  • 1 to 16 kHz Peak Boost
  • 5 to 10 kHz Shelf Boost
Enjoy precise control of your essential high and low frequencies with the Pultec EQM-1S3-SS, a 2 RU 2-band EQ armed with progressive-taper 21-step switches for mastering precision. With low-shelf boost and attenuation from 30 to 100 Hz, peak boosting of highs from 1 to 16 kHz, a 5 to 10 kHz shelf boost, and a 5 to 20 kHz shelf attenuator, this EQ allows for simultaneous boosting and cutting of the same frequencies for musical EQ curves.
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Pultec EQM-1S3-SS Overview

Enjoy precise control of your essential high and low frequencies with the Pultec EQM-1S3-SS, a 2 RU 2-band EQ armed with progressive-taper 21-step switches for mastering precision. With low-shelf boost and attenuation from 30 to 100 Hz, peak boosting of highs from 1 to 16 kHz, a 5 to 10 kHz shelf boost, and a 5 to 20 kHz shelf attenuator, this EQ allows for simultaneous boosting and cutting of the same frequencies for musical EQ curves.

The high band features adjustable bandwidth (Q) for broad or narrow sculpting. Further switches include EQ In and On/Off switches. The gain stages in the line amp are handled by a solid-state API 2520 op-amp, which offers a punchier sound with a tighter low end than the tube version. This equalizer is made in the USA.

A Once Rare EQ Gem
Offering a more compact option than the larger 3 RU EQP-1S, the (formerly) extremely rare EQM-1S3-SS has the same wide-bandwidth line amp as the EQP-1A / EQP-1A3 units, but with modified low-frequency boost / attenuation response curves, two additional peak boost frequencies, and most importantly, two high-frequency shelf boost curves (5 and 10 kHz) added to the sonic palette.
Progressive-Taper Switches
The EQM-1S3-SS (mastering version) takes the EQP-1S3 evolution a significant step farther by replacing the potentiometers with 21-position ELMA switches, loaded with precision metal film resistors to achieve custom tapers for each control. The current design implements Pultec's full-range, progressive-taper design, which provides 0.5 dB per-step precision for the first 50% of rotation and then progressively larger (1 or 2 dB) steps as the control is rotated from 50 to 100% of rotation.

This allows for precise control for subtle equalization on a mix bus or similar applications. Furthermore, the stepped controls make recall a breeze, and the precise tracking between units is essential for stereo image retention when using a pair on the stereo mix bus.

Solid-State Line Amp
The EQM-1S3-SS swaps out the tube-powered amp of the EQM-1S3 for a solid-state API 2520 op-amp. Many users of this version of the Pultec describe them as more punchy and having a tighter low end than the tube version. These EQs deliver plenty of the punch and mojo of their tube-amp counterparts, with just a slightly different flavor.
UPC: 855095005191

Pultec EQM-1S3-SS Specs

General
Item Type
Equalizer
Number of Channels
Single-Channel
Circuitry
Tube (12AU7/ECC82, 12AX7/ECC83, 6X4)
Metering Type
No Visual Metering
EQ & Tone Shaping
EQ Type
2-Band Pultec-Style EQ
High
+18 dB at 1 kHz to 16 kHz (Bell)
+14 dB at 5 kHz to 10 kHz (Shelf)
-16 dB at 5 kHz to 20 kHz (Shelf)
Midrange
No
Low-Cut/High-Pass Filter
No
Connectivity
Audio I/O
1x XLR 3-Pin Balanced Mic Input
1x XLR 3-Pin Balanced Line Output
Digital Audio I/O
No
USB I/O
No
Performance
Frequency Response
20 Hz to 20 kHz ±0.5 dB
Input Impedance
600 Ohms
Output Impedance
50 Ohms
Power
Input Power
117 VAC, 60 Hz
Physical
Rackmount Size
2 U
Dimensions
19" / 48.3 cm

Pultec EQM-1S3-SS Reviews

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