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Boredbrain Music EQx5 Eurorack 5 Band EQ Module

Boredbrain Music

£229.00
In stock.
Shipping info
eqx5
VOLTAGE CONTROLLED EQUALIZER
Five frequency bands with ±12 dB gain
Post-EQ balance and level controls
Control voltage inputs for all parameters
Stereo I/O with discrete signal paths
Additional mono sum output
Experiment with EQ
EQx5 is an effective 5-band stereo equalizer for eurorack synthesizers. The module allows for quick and musical adjustments to the frequency content of audio signals, with voltage-control of all parameters for experimental EQ processing.
Five Frequency Bands
The module has five bands of graphic equalization, each with ±12 dB of level boost or cut. The first order filters employed for equalization have slopes of 6 dB/oct from their respective center frequencies.
HIGH 10 kHz shelf
HI-MID 4 kHz peak
MID 1 kHz peak
LO-MID 400 Hz peak
LOW 100 Hz shelf
Adjustments to these bands can make both subtle and dramatic changes to the frequency characteristics of the source audio signal(s). These adjustments can be useful in many scenarios such as attenuating problem frequencies and accentuating others, or strategically making “space” in the mix for specific sounds.
Balance & Level
The BALANCE parameter is essentially an equal-power crossfader which simultaneously and inversely affects the gain of the Left and Right channels. When a stereo signal is connected to the module’s inputs, this parameter functions like a Pan control, shifting the stereo image Left and Right. When two mono signals are connected to the module’s inputs and the OUT L+R mono output is used, this parameter functions like a volume crossfader with no perceivable level drop in the center.
The LEVEL parameter is a post-eq volume adjustment, used primarily to compensate for level changes after frequency equalization. The module implements a pseudo-loudness feature, which gradually boosts the LOW and HIGH shelving filters as LEVEL is reduced. This helps to retain the signal’s “fullness” as it is attenuated, accounting for the equal-loudness contour.
Complete Voltage Control
A key feature of EQx5 is the ability of all parameters to be controlled with external voltages, opening up a range of experimental possibilities in the eurorack environment.
The amount of boost or cut for each band can be modulated using control voltage signals, with the full range being ±5 V (10 Vpp). The frequency band’s gain knob then defines the bias point to offset the incoming control voltage.
Additionally, both BALANCE and LEVEL have their own respective CV inputs, also with a full range of ± 5 V. The LEVEL parameter can act very much like a VCA when used in combination with its CV input.
Input & Output
The two inputs, L and R, are designed for audio signals within the audible spectrum. These inputs are AC-coupled, and will block DC signals to reduce noise. R is normalled L, so if no plug is present, the channel will obtain a of copy of L.
In addition to the two discrete L and R outputs, the module has a mono output, OUT L+R, which is the sum of the two channels. As mentioned previously, this output is useful when crossfading between two signals using the BALANCE parameter, or to conveniently obtain a mix of the two audio signals.

technical specs
Width: 10 HP
Depth: 1.0 in (25 mm)
Weight: 4.0 oz (114 g)
SNR: > 94 dB
Power: +12 V 60 mA, -12 V 49 mA

How much is my shipping?

Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK it's normally around £4 for order values under £150, and free above that. Shipping to mainland EU is typically between £7 and £20, depending on the shipping method and the size and weight of the order.

Do you ship to my country?

Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.

Shipping methods

We use a combination of Parcelforce, DPD, Royal Mail and UPS for the UK, and for international orders it's either Royal Mail, UPS, DHL or FedEx depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.

Dispatch times

For UK orders, we normally dispatch the same working day if we get the order before 15:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.

For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes FedEx or UPS may come a little earlier than scheduled which would also push an order into the next day.

Shipping times

Since April 2020 the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer.

There is absolutely nothing we can do about this unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.

Saturday shipping

If you're in the UK and you order before 15:30 on a Friday then we can send something for a Saturday delivery (NB: this applies to UK mainland addresses only). The success rate with DPD is about 95% so it's worth a punt most of the time. Please note that if you select Saturday shipping on an order placed earlier in the week, we'll wait until Friday to ship it.

Pre-orders

If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.

If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.

Product Overview

eqx5
VOLTAGE CONTROLLED EQUALIZER
Five frequency bands with ±12 dB gain
Post-EQ balance and level controls
Control voltage inputs for all parameters
Stereo I/O with discrete signal paths
Additional mono sum output
Experiment with EQ
EQx5 is an effective 5-band stereo equalizer for eurorack synthesizers. The module allows for quick and musical adjustments to the frequency content of audio signals, with voltage-control of all parameters for experimental EQ processing.
Five Frequency Bands
The module has five bands of graphic equalization, each with ±12 dB of level boost or cut. The first order filters employed for equalization have slopes of 6 dB/oct from their respective center frequencies.
HIGH 10 kHz shelf
HI-MID 4 kHz peak
MID 1 kHz peak
LO-MID 400 Hz peak
LOW 100 Hz shelf
Adjustments to these bands can make both subtle and dramatic changes to the frequency characteristics of the source audio signal(s). These adjustments can be useful in many scenarios such as attenuating problem frequencies and accentuating others, or strategically making “space” in the mix for specific sounds.
Balance & Level
The BALANCE parameter is essentially an equal-power crossfader which simultaneously and inversely affects the gain of the Left and Right channels. When a stereo signal is connected to the module’s inputs, this parameter functions like a Pan control, shifting the stereo image Left and Right. When two mono signals are connected to the module’s inputs and the OUT L+R mono output is used, this parameter functions like a volume crossfader with no perceivable level drop in the center.
The LEVEL parameter is a post-eq volume adjustment, used primarily to compensate for level changes after frequency equalization. The module implements a pseudo-loudness feature, which gradually boosts the LOW and HIGH shelving filters as LEVEL is reduced. This helps to retain the signal’s “fullness” as it is attenuated, accounting for the equal-loudness contour.
Complete Voltage Control
A key feature of EQx5 is the ability of all parameters to be controlled with external voltages, opening up a range of experimental possibilities in the eurorack environment.
The amount of boost or cut for each band can be modulated using control voltage signals, with the full range being ±5 V (10 Vpp). The frequency band’s gain knob then defines the bias point to offset the incoming control voltage.
Additionally, both BALANCE and LEVEL have their own respective CV inputs, also with a full range of ± 5 V. The LEVEL parameter can act very much like a VCA when used in combination with its CV input.
Input & Output
The two inputs, L and R, are designed for audio signals within the audible spectrum. These inputs are AC-coupled, and will block DC signals to reduce noise. R is normalled L, so if no plug is present, the channel will obtain a of copy of L.
In addition to the two discrete L and R outputs, the module has a mono output, OUT L+R, which is the sum of the two channels. As mentioned previously, this output is useful when crossfading between two signals using the BALANCE parameter, or to conveniently obtain a mix of the two audio signals.

Technical Specs

technical specs
Width: 10 HP
Depth: 1.0 in (25 mm)
Weight: 4.0 oz (114 g)
SNR: > 94 dB
Power: +12 V 60 mA, -12 V 49 mA

Shipping Details

How much is my shipping?

Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK it's normally around £4 for order values under £150, and free above that. Shipping to mainland EU is typically between £7 and £20, depending on the shipping method and the size and weight of the order.

Do you ship to my country?

Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.

Shipping methods

We use a combination of Parcelforce, DPD, Royal Mail and UPS for the UK, and for international orders it's either Royal Mail, UPS, DHL or FedEx depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.

Dispatch times

For UK orders, we normally dispatch the same working day if we get the order before 15:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.

For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes FedEx or UPS may come a little earlier than scheduled which would also push an order into the next day.

Shipping times

Since April 2020 the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer.

There is absolutely nothing we can do about this unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.

Saturday shipping

If you're in the UK and you order before 15:30 on a Friday then we can send something for a Saturday delivery (NB: this applies to UK mainland addresses only). The success rate with DPD is about 95% so it's worth a punt most of the time. Please note that if you select Saturday shipping on an order placed earlier in the week, we'll wait until Friday to ship it.

Pre-orders

If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.

If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.