Gurus SINUSOID User manual

USER’S MANUAL
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Gurus Amps si riserva il diritto di modificare le caratteristiche tecniche ed estetiche dei prodotti in qualsiasi momento e senza
preavviso. Questo prodotto osserva i requisiti delle Direttive Europee 89/336EEC
Gurus Amps reserves the right to change technical features or look of his products in any moment without notice. This product
is pursuant to European Directives 89/336EEC
GURUS S.r.l.
Via Faentina n. 44 – 48013 Brisighella (RA) Italy
Tel/Fax [phone] P.iva 02502120393
www.gurusamps.it – [email protected]

SINUSOID INTRODUCTION:
Inspired by the legendary American amps of early 60’, where tremolo and
reverb came into their own, we focused on how to replicate the Vibrato
Channel in a pedal format, our challenge was to design a real Optical
tremolo with same tube driven character of old. We designed Sinusoid
using the ACCUTRONICS™ Springs Tank technology making it 100%
analog, tube driven.
SINUSOID FEATURES:
-Two independent effects recallable by Footswitches individually or
combined.
-REVERB: a real tube driven analog Reverb circuit equipped with an
ACCUTRONICS™ Double springs tank. Finetuning the frequencies let us
achieve the feeling of those great vintage 60’s spring reverb tanks.
-VIBRO: a real tube driven Optical tremolo circuit, uses a Sinusoidal Wave
coupled with our own Gurus proprietary technology using LDR to
perfectly match the character of Vintage Vibrato channels, making it
stand out from all the other digital or analog tremolo effect units on the
market today.
- Remote outs for connections with analog switchers. This lets you remotely
use the pedal and operate it outside of your pedalboard where this might
cause undesired mechanical noises.. NOTE: Remote switcher must have
Clean Contacts, without common ground wiring.
POWERING SINUSOID:
Sinusoid drains around 230mA on 9VDC and 300mA on 12VDC,
HOWEVER, having an internal power output section (1,2W amp) that drives
the reverb tank the draining depends by input signal, so it may need up to
400mA on 12VDC.
So, be sure to use a standard Negative TIP Power Supply with enough
current for optimum performance.
Terms of Warranty
Gurus product warranty covers 2 years from date of purchase with the
exception of moving mechanical parts such as foot switches, speakers and
handles which have a 1 year warranty. The valves, lights and cables are
guaranteed for 90 days from the date of purchase. The warranty does not
cover damage caused by accident, misuse and / or neglect, failure to comply
with the instruction manual, repair and attempted repair by personnel not
authorized by Gurus Amps, any damage caused during transport and delivery,
(claims must be presented to the carrier); damage to
any product that has been altered or on which it has been removed, defaced or
altered serial number; damage caused by faulty connections or connections to
equipment failures and/or defective power cables. Responsibility of Gurus
Amps for any defective product is limited to repair or replacement of the
product at our discretion.
Gurus Amps is not to be considered liable for damages resulting from loss of
use of the product, lost time operation interrupted by non-use of the product,
loss of business or any other damages or incidental, consequential or
otherwise; damage in transit or damage caused by inadequate packaging or of
poor quality.
Assistance: Please contact us for information on how, where and when to ship
the product. Repaired goods will be packed carefully and we recommend not
to include any accessories such as cables, effects, manuals, etc. Please attach a
copy of the original receipt of purchase (invoice or receipt) together with
problem description and your personal data.
THE WARRANTY IS NOT VALID 'WITHOUT A COPY OF YOUR RECEIPT OF
SALE CERTIFYING THE DATE OF PURCHASE.
The costs of labor and material guarantee shall be borne by Gurus Amps.
PACKING AND SHIPPING COSTS ARE THE RESPONSIBILITY OF THE
CUSTOMER/USER.

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CONTROLS:
SINUSOID CONTROLS:
1- VOLUME: Input Level
2- REVERB: Effect Level
3- Magic eye display shown the input level
4- INTENSITY: Vibrato Level
5- SPEED: Speed of Vibrato
6- Magic eye display shown the impulsive Vibrato speed
7- On/Off Reverb
8- On/Off Vibrato
9- Remote switching out
10 - Tube 12AU7/ECC82 estimated replacement time is 3000Hrs.
11 - Power in 9 to 12VDC Negative Tip 400mA required
12 - Signal INPUT
13 - Signal OUTPUT
FREQUENCY RESPONSE:
Here you can see the incredible frequency response of Sinusoid, a full
range 20-20Khz that makes it suitable for all applications and any
instrument.
REVERB:
Designing the Reverb side of Sinusoid, we collaborated with Accutronics™ this
coupled with our driving circuit, GURUS was able to perfectly reproduce, the
same tone, feel, and response of Vintage Spring Reverb Tanks.GURUS SINUSIOD
gives you the sound and feeling of those great vintage and now expensive amps
of the 60’s.

TECHINCAL DETAILS:
Power 9VDC (Negative Tip)
Power 12VDC (Negative Tip)
Max Consumption
Signal to Noise:
Frequency response:
Input Impedance
Output Impedance
Max Input Level
Bypass Switching:
Reverb Tank Amplifier:
Reverb FX Mix: (parallel connection)
Vibrato Circuit:
Vibrato Intensity:
Vibrato Speed:
Tube Type:
Remote switching:
Dimensions
Weight
Main Power:
Input
Output
MAX 300 mA
MAX 400 mA
410 mA
110db typical
20Hz to 20000Hz
<1M Ohm
<100K Ohm
1,5Vpp
Double In/Out Buffers
SS 1,2W RMS
Max. 50%
Full Sino Opto-Resistor equipped
0 to -10db
116 to 384bpm
12AU7 (Shuguang)
ON-ON Mom. Clean contact switch 1/4” TRS jack
220x130x50mm. - 8x5x2inches.
0,600Kg. - 1,32 lbs
DC PLUG 5,5 x 2,1mm.
Guitar Input 1/4” jack
To Amp In 1/4” jack
SINUSOID BLOCK DIAGRAM
SINUSOID IN DETAILS:
As you can see on the graphic, your guitar signal keeps always the
SINO waveform, even when the Vibrato does its work. This ensure you
keep always the best tone, respecting your guitar, the others effects you
are using, and the overall performances.
SIGNAL TO NOISE:
SINUSOID WAVEFORM: A KEY FOR TONE.