ASHLY PQX 571 Graphic Equalizer Mono 7 Band

  Ashly presents the PQX series parametric equalizers. Like graphic equalizers, parametrics allow you to boost or cut selected frequencies. However, parametric equalizers also allow exact adjustment of the frequency and bandwidth of each band, resulting in very precise control of frequency response. The amplitude, center frequency, and bandwidth are the "parameters" for each equalizer band and the term "Parametric" refers to the ability to adjust all of these characteristics independently   The Ashly PQX series equalizers are a third generation design including many refinements on our original PQ models. Lower noise, greater headroom, additional filters, full 20Hz -20KHz range on all parametric filters and additional connector types are the result.   The heart of the PQX equalizers is a unique bandpass filter circuit. Basically a “state-variable" type, this filter is trimmed and optimized to provide excellent transient response and a wide range of frequency and bandwidth adjustment. Each filter can be tuned over a 100:1 frequency range (about 6.6 octaves) and a 70:1 bandwidth range with no more than a 2 dB amplitude error at center frequency. At its sharpest setting, the filter has a "Q" of about 35 and generates a response curve with 3 dB points only 1/20 octave apart, making feedback control possible with no audible side effects. Each filter is placed in the feedback loop of a summing amplifier to produce the desired frequency response. Since a separate summing amplifier is used for each band, no interaction between bands occurs. After twenty years of refinement, the Ashly parametrics are the most powerful equalization tool available. They especially  excel in control of resonance and feedback yet also provide smoother broadband tone shaping than Graphic equalizers.

The Rane ME 15S microGraphic Equalizer is a two-channel, 2/3-octave design with 20 mm sliders in a single rack space unit. It features a Range switch for high slider resolution in the ±6 dB mode, equivalent resolution to 45 mm sliders found on the DEQ 60L. The ±12 dB mode provides a wide range of control over system audio.

The active filter sections feature Raneʼs innovative constant-Q (constant bandwidth) design. Constant-Q means the bandwidth of each individual filter is guaranteed to be narrow enough to prevent unwarranted interaction between filters, yet wide enough to produce exactly the type of correction curve demanded by even the most unusual acoustic surroundings. This differs dramatically from conventional designs of the past, encumbered with the unfortunate characteristic of changing bandwidth when changing boost/cut amounts.

Front panel controls and indicators include an overall rotary Level control for each channel as well as Overload indicators. Passive pushbutton Bypass switches feature LED indicators, avoiding ambiguity by being on when the unit is Bypassed. (A passive Bypass switch requires no power to operate. This allows completion of the audio path should power fail in the ME 15S.)

Inputs and Outputs are electronically balanced designs, capable of unbalanced operation when required. They accept and drive all possible signal levels into normal load impedances. Balanced applications choose between the XLR or 1/4" Tip-Ring-Sleeve connectors. Unbalanced sources also may tie to the ME 15S through mono 1/4" connectors (no ring connection).

• Constant-Q Bandwidth Design
• Overall Level Controls and Passive Bypass Switches
• 20 mm Filter Slide Controls with ±6 dB or ±12 dB Slider Range
• Infrasonic, Ultrasonic, & RFI Filters
• Balanced XLR and 1/4" TRS Inputs and Outputs
• Universal internal switching power supply (100-240 VAC)

The class-A circuit used in the EQ-73 is similar to the eq section in the classical 1073 module, without the high pass filter. Additional frequencies have been added and the mid frequency band uses two inductors, the higher value of the second one is used for the two lowest frequencies, 160 Hz and 240 Hz, to achieve a suitable response.

The sound character is warm, punchy, sweet and musical. These classic characteristics have been heard on countless recordings through the years and it is a versatile sound that works very well on most sound sources and in most genres. The essence of this sound is now available at a surprisingly low cost, making it available to nearly everyone.

The EQ-73 has stepped frequency controls that offers a wide selection of frequencies from 20 Hz to 24 kHz.

The Low and High frequency bands are shelving and the mid frequency band is of the bell type.

The control range is +/-15 dB for the two lower bands and +/- 18dB for the high frequency band.

There are separate bypass switches for all three bands.

The EQ-73 is made to be used together with one of our PRE-73 models that has an Insert jack. It can also be used with many other units that has a low level insert jack.

Combining a PRE-73 and an EQ-73, and using a UNITE rack kit to mount them together, one will get a 19-inch 1073-style unit at a low cost and with a great sound!

FEATURES

- Vintage Style electronics. No intergrated circuits in the signal path

- 3-band with a dual inductor based mid frequency band

- Stepped frequency selection

- A wide selection of frequencies from 20 Hz to 24 kHz

- Control range up to +/- 18 dB

- Separate Bypass switches for each band

- Tantalum capacitors in the signal path

- Made to be used together with one of our PRE-73 models with an Insert jack or any other unit with a low level Insert jack

- TRS jack for in-and output connection, the nominal working level is around 18 dBu

- Selectable ground lift switch

- External power supply to avoid interaction with the audio circuits

- Great sound that suits most sound sources and genres

- A solid build quality that will last many years of normal use

Digital stereo active crossover with 4 inputs and 8 outputs, incl. software .

• Flexible routing configurations for all standard mono and stereo output operating modes
• 4 analog inputs and 8 analog outputs (XLR)
• Active frequency filter types (Bessel, Butterworth and Linkwitz-Riley) with slopes up to 24 dB/octave split up the audio signal into different frequency bands
• Incl. software editor (for PC and Mac) for remote control via computer through USB interface: store, transfer, and manage your presets
• Up to 30 user presets storable in the device via software
• 5 menu languages selectable (German, English, French, Spanish, Dutch)
• Alphanumeric LCD screen with 2 lines of 16 characters each
• Input sensitivity digitally adjustable
• Inputs and outputs with 4-digit LED level meter as well as clip and limit LED indicator
• Mute switch with LED indicator per output
• 7-band parametric EQ per output
• Up to 7 ms signal delay adjustable for the outputs
• Output limiter with adjustable limits and automatic attack and release settings as overload protection for your amplifying system
• Switchable phase
• Lock function for prevents undesired changes to settings
• Rack installation, 1 U
• Windows XP, Vista, 7, 10 and Mac OS X 10.5.8 and better
• Digital signal processor
• The device can be connected via USB to the PC in connection with DXO Software The firmware can be updated via the PC connection
• (19") 48.3 cm rack installation 1 U