SPL – Sound Performance Lab (2024)

SPL – Sound Performance Lab (1)

STUDIO

8-channel Volume Controller

Volume 8 is an active DAW monitoring controller and a puristic surround preamplifier.

SPL – Sound Performance Lab (2)

Features

  • High-end volume potentiometer and illuminated mute switch from ALPS; the potentiometer controls directly (no VCA or DAC circuits)
  • The mute switch allows a quick reaction when speakers or ears need to be protected (e.g. in case of a computer crash)
  • In contrast to digital volume control, where the bit resolution is continuously reduced as the volume decreases, the signal does not deteriorate with analog volume control.
  • In contrast to passive volume control, active volume control does not affect the phase and frequency response. The monitoring signal sounds reliably the same at any monitoring volume.
  • Balanced DB25 (TASCAM standard) connectors
  • High-quality balancing stages with very high common-mode rejection (minimizing interference/interference in the signal paths)
  • High-quality power supply unit with toroidal transformer
  • Solid aluminium knob with 45mm diameter for smooth, sensitive operation
  • Elegantly designed and compact housing for flexible desk positioning close to the screen.

SPL – Sound Performance Lab (3)

Analog Volume Control

The monitoring volume is controlled analogously with an 8-gang potentiometer.

If the volume is controlled digitally, for example in the DA-converter, the bit resolution decreases with decreasing volume with one bit per -6dB. Usually we listen with about -30dB at full volume, which decreases the bit resolution by 5dB.

Active or Passive?

It is claimed that passive circuits are less signal influencing and more puristic and therefore better. Well, that is not so.

A passive control element such as a potentiometer in the signal path, which is not electronically buffered, influences the frequency response and phase position. Both change continuously as you change the volume.

This is exactly what does not happen with an active control.

Don't Panic

The Mute switch has two rights of existence. On the one hand, it allows the speakers to be muted without having to touch the volume control and thus leaving the set volume.

Secondly, the Mute switch is a panic switch. Whenever the computer hangs or crashes, there is a risk that a full level signal will reach the speakers. This can be extremely loud and may damage the speakers.

The mute switch can be used to quickly turn off the signal and protect the speakers and your hearing.

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Manuals

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Specifications

Print view

Analog inputs & outputs; DB25 (TASCAM standard, balanced)

Maximum input & output gain

21 dBu

Input impedance

22

Output impedance

100 Ω

Frequency range (-3 dB)

10 Hz – 100 kHz

THD + N (10 Hz – 22 kHz, 15 dBu)

-100 dBu

Noise (A-weighted)

-102 dBu

Crosstalk (1 kHz)

80 dB

Common mode rejection (1 kHz)

60 dB

Dynamic range

123 dB

Internal Linear Power Supply with Toroidal Transformer

Operating voltage for analog audio

+/- 15 V

Operating voltage for relays and LEDs

+12 V

Mains Power Supply

Mains voltage (selectable)

230 V AC / 50; 115 V AC / 60 Hz

Fuse for 230 V

T 250 mA

Fuse for 115 V

T 500 mA

Power consumption

max. 15 W

Dimensions & Weight

W x H x D (width x height incl. feet x depth)

215 x 91 x 220 mm

8.46 x 3.58 x 8.66 inch

Unit weight

1.7 kg

3.75 lbs

Shipping weight (incl. packaging)

2.95 kg

6,5 lbs

Reference: 0 dBu = 0,775V. All specifications are subject to change without notice.

What does it actually mean …

In Stock!

The product is in stock in our warehouse in Niederkrüchten, Germany, and will be shipped the same or next working day.

We process the orders after receipt of the order and update the stock in the online shop regularly. If the product is no longer available at short notice due to high order volume, you naturally have the right to withdraw from the purchase (see Right of Withdrawal).

In any case, you will receive an e-mail with details of the delivery and the estimated delivery time.

Available soon!

The product is not in stock in our warehouse in Niederkrüchten, Germany. Usually it will be available again within 5 working days.

In any case, you will receive an e-mail with the details of the delivery and the estimated delivery time.

Of course you have the right to withdraw from your purchase (see Right of Withdrawal).

Currently unavailable.

This product is currently sold out and unavailable.

Was bedeutet eigentlich …

Auf Lager!

Das Produkt ist in unserem Lager Niederkrüchten vorrätig und wird noch am selben oder nächsten Werktag versendet.

Wir arbeiten die Bestellungen nach Bestelleingang ab und aktualisieren den Bestand im Online-Shop regelmäßig. Falls das Produkt wegen hohem Bestellaufkommens kurzfristig nicht mehr verfügbar ist, hast du selbstverständlich das Recht, vom Kauf zurückzutreten (siehe Widerrufbelehrung).

In jeden Fall erhältst du eine E-Mail mit den Einzelheiten der Lieferung und der voraussichtlichen Lieferzeit.

Bald verfügbar!

Das Produkt ist in unserem Lager Niederkrüchten nicht vorrätig. Gewöhnlich ist es innerhalb von 5 Werktagen wieder verfügbar.

Auf jeden Fall erhältst du eine E-Mail mit den Einzelheiten der Lieferung und der voraussichtlichen Lieferzeit.

Selbstverständlich hast du das Recht, vom Kauf zurückzutreten (siehe Widerrufbelehrung).

Zur Zeit nicht verfügbar.

Dieses Produkt ist derzeit ausverkauft und nicht verfügbar.

SPL – Sound Performance Lab (2024)
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