Pete Cornish

Gery Series Pedals

被称为史上最出色的一款磁带延迟，使用交流110-230V电压，整体音色极为自然，可以用干净、清晰、温暖、华丽等各种辞藻进行描绘。

提供干信号开关。并且可以通过TX4开关，对音色进行调节，得到合唱及Flanger等音色。

具体详见下文的整理资料。

PETE CORNISH T.E.S 磁带延迟，于2017年已经停产。目前仅有少量收藏品。

HISTORY

Looking back over the countless touring Stage Systems we have designed and built since theinception of our Company in July 1976 one item features in virtually every System: ECHO.

The earliest systems all used outboard Echos - the Echoplex EP Series were very common as werethe WEM Copycats and later the Roland Space Echos in it’s several versions - all connected via Send/Return circuits and with a local on-stage bypass footswitch.

The Echo Delay Time, although adjustable, could not be altered “on the fly” but an offstage tech could reset the time for different songs or the Guitarist could reset the delay time between numbers.

Don’t forget - we are talking here about the Pre Midi and Digital era !
When larger rack systems as distinct from self contained pedalboards were introduced it was essential to include Echo as on of the functions. The Roland Space Echo was available in rack mount form and we modified and rack mounted many Echoplex units for ease of use and connection.

The only slight problem we discovered with the Echoplex and Space Echo, in common with all tape based echo units, was the need for regular maintenance - replacing tape loops, head cleaning and demagnetizing - occasioned by the stage environment where smoke oil and pyro debris cause tape slippage and bearing seizure.

The introduction of the Touring Rack Systems also made available the rack mounted digital delays starting with the MXR and later the Roland SDE3000 as well as a multitude of more complex midi programable delay and multi effects units.

As the use of large Touring Rack Systems has declined in recent years and smaller compact stage system pedalboards have become popular again we were asked to create a reliable and consistent Echo effect for our stage pedalboards that could replicate the tone and analogue musicality of the early Tape Echos.

ENTER THE T.E.S™

We discovered that the original BOSS DD-2™ (manufactured by ROLAND) pedals were provided with a superb delay chip set and compander circuit and with modifications this could be used as the basis of a fine echo unit. We added a variable frequency Low Pass filter to replicate the head and tape wear and also a modulation circuit to vary the delay time to simulate the out of roundness capstan and worn bearings often found with tape echos.

Initially the T.E.S™ was only available as part of one of our stage pedalboards but is now available as a Stand-Alone pedal as part of our Grey Series range of guitar effects.

TECHNICAL DESCRIPTION

The dc current requirements of the ROLAND chip set are far too high to allow battery operation so we have added a stabilized AC/DC 10.6v power supply suitable for world wide use - this is in addition to the on board 5vdc regulator powering the delay section thus providing superb stability to
the delay time and also good signal headroom for the analogue audio section (the DRY and BYPASS signals).

The input is high impedance (1MΩ ) unbalanced, featuring our LD-1 and is suitable for Passive and Active guitars.

Our low noise Class A input stage features an effective RFI filter and unity gain high to low impedance converter. Also fitted is a Ground Lift switch which should be set to G if the input is a wired guitar. When the input signal is supplied from a grounded source then position L should be set to ensure no ground loop hum is introduced. On no account should the AC Power ground be dis- connected.

The low output impedance ensures no losses at audio frequencies with long cable runs. The output is floating with transformer isolation and cannot create ground loops when fed to other grounded equipment - IE: Amp inputs.

The T.E.S.™ utilises the delay section of the BOSS DD-2™pedal. The extra facilities we have added are as follows:

i) A heavy duty footswitch (with LED) labelled ECHO engages the DD-2™ with it’s enhanced characteristics: in bypass mode the signal is a mirror image of the input.

ii) A heavy duty footswitch (with 2 LEDs) labelled T Tx4 has been added to give instant access to two time delay ranges. Range T covers approximately 50mS to 250mS and Range Tx4 covers approximately 200mS to 1000mS. Intermediate time settings will also be changed by a factor of 4 when changing from T to Tx4 and vice versa.

iii) The Tape Echo Simulator (T.E.S.™ ) effect with it’s Bandwidth Frequency (B/W) control may be adjusted over the range 1KHz to 4KHz. This simulates various degrees of head and tape wear that is experienced with vintage Tape Echos.

N.B. As the T.E.S.™ effect is applied only to the repeats: the B/W control will not function until the ECHO switch is engaged.

AC VOLTAGE SUPPLY:

The T.E.S.™ is manufactured with a wide range AC/DC stabilised power supply and may be used with no variation in performance as long as the AC supply is within the range +/- 15% of the voltage marked on the voltage selector switch adjacent to the AC input connector where the fuse rating is also noted. The fuse may only be accessed when the AC input cable is removed - a spare fuse is carried alongside the main one in the “drawer” that can be pried out after removing the AC cable. 

We recommend the use of the supplied 3 core AC cable, or equivalent of different length, as the use of the Earth (Ground) will ensure maximum safety and minimum noise. Please do not use “ground lifters” or “cheaters” of any kind on the AC connector or cable. 

This unit should be Grounded to AC mains at all times and cannot create ground (hum) loops when connected to grounded amplifiers.
 

T.e.s.™ FIRST USE

1) This unit is AC powered and should be connected to a grounded (3Pin) AC supply. Before connecting AC power please select the correct AC voltage setting to suit your local supply voltage.

If you are not sure of your AC supply voltage please enquire from your power supplier.

2) Connect your instrument to the jack socket marked INPUT using a suitable screened cable.

3) Connect the OUTPUT jack of the T.E.S.™. to the input of your amplifier, again using a suitable screened cable. At this time do not connect any other effects or routing devices in line as these may mask some of the more subtle sounds of the T.E.S.™ The amplifier used should also be earthed (grounded) to the same AC supply as the T.E.S.™: the T.E.S.™ features a floating/balanced output which will not create a ground (hum) loop when both it and the amp are earthed.

4) With the ECHO foot switch in the bypass position (LED off) set your amp controls for a clean tone and volume.

5) Adjust the T.E.S.™ controls as follows:

VOLUME: 9 o’clock (three quarters)

REPEATS: 12 o’clock (half)

DELAY TIME: fully clockwise (maximum)

T Tx4: X4

B/W: 4KHz

6) Press the ECHO footswitch and confirm that the delay signal is clearly audible approximately one second after your note starts and decays smoothly. This is more easily heard if a short single note or chord is played.

7) Adjust the B/W control down to 3KHz and then 2KHz , 1KHz etc. and listen to the delay tone as it repeats. We have found a very “tape” like tone between 2KHz and 3KHz . Increasing the REPEATS control will allow more repeats to be heard but be very careful of setting this control too high as it will cause runaway feedback to be created which could damage your amplifier. Careful adjustment of the REPEATS control will allow almost infinite repeats but do be careful of too much output from the T.E.S.™ Unit if it “runs away”.

PLEASE NOTE: If you switch the DELAY footswitch to bypass mode when a long delay is repeating, the delay signal may still be recirculating when you next switch the DELAY footswitch on. If runaway feedback has been enabled the full output of the DD-2 (approx. 10 volts peak/peak) will be output to your amplifier. Please take care to protect your amplifier. Reducing the REPEATS control to minimum (fully counter clockwise) will stop any runaway feedback immediately.

8) Mod Depth and Speed - As the MOD DEPTH control is turned clockwise the DELAY TIME of the existing T.E.S.™ delay circuit is varied in time with the setting of the MOD SPEED.

9) At maximum MOD DEPTH the variation in DELAY TIME will approach +/- 10% of the set DELAY TIME. Consequently, at long delays the variation in pitch will
be more dramatic than at short delays for the same MOD DEPTH setting. When changing DELAY TIME please adjust the MOD DEPTH to obtain similar amounts of
pitch variation.

10) With T Tx4 switch set to T and with short DELAY TIMES the effect of maximum DEPTH will give Chorus or Flanger sounds. Vary MOD SPEED, VOLUME, B/W
and REPEATS to find suitable tone colour. A good starting point for setting the MOD SPEED AND DEPTH is with both controls at approximately 12 o’clock -
adjust from there to find suitable settings.

11) Also fitted is a DRY switch. Set towards the foot switches this will mute the dry or direct signal and leave just the delay signal - useful for parallel mixing of dry and delay in a suitable routing system. You may also use the DRY mute switch to check the level and timbre of the delay signal after setting the B/W to 1, 2 or 3 KHz for example.