Tannoy Car Speaker I15 User Manual

i15  
USER MANUAL  
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1. Introduction  
The Tannoy i15 professional loudspeaker has been designed for a wide variety of  
sound reinforcement applications requiring extended frequency response from a  
compact system, capable of delivering high sound pressure levels with extremely low  
distortion, resulting in outstanding clarity, definition and detail.  
The i15 comprises one 15 inch Dual Concentric driver in which the low frequency  
(LF) and high frequency (HF) sources are coincidentally aligned to a point source,  
resulting in a smooth uniform frequency response over a wide area of coverage  
either as a portable stand alone system or in a multi-cabinet array. The sophisticated  
CAD designed waveguide combines 60 degree conical dispersion and excellent  
acoustic impedance characteristics. As the system is a point source, clusters and  
arrays have minimal lobing. These features are inherent and achieved without the  
use of any electronic signal processing  
Designed for fixed installations, the i15 is constructed from medium density  
fibreboard (MDF), for a high level of acoustic damping. The structural integrity of the  
enclosure is further enhanced by internal steel braces which double as the flying  
points accepting M8 eyebolts, strategically placed to distribute the weight of the  
enclosure evenly.  
For applications requiring extended low frequency enhancement, a range of Tannoy  
sub-bass systems are available and can be used in conjunction with the i15.  
2. Unpacking  
Every Tannoy i15 is carefully inspected before packing. After unpacking your  
loudspeaker, please inspect for any exterior physical damage, and save the carton  
and any relevant packaging materials in case the loudspeaker again requires packing  
and shipping. In the event that damage has been sustained in transit notify your  
dealer immediately.  
3. Connectors/Cabling  
The i15 is fitted with two 4-pole SpeakonÔ connectors. Speakon has the following  
advantages over EP and XLR type connectors: all terminations are solderless, this  
makes life easier at the time of installation or when field servicing is required.  
Contacts will accept 6 sq. mm wire with an outside diameter of up to 15mm and a  
current rating of 30 Amps.  
The pins of the Speakon sockets identified as input/output on the rear of the input  
panel are paralleled within the enclosure.  
Tannoy have adopted the following wiring standard for the i15 :-  
Pin 1+ is Positive  
Pin 1- is Negative  
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Should you encounter any problems obtaining Speakon connectors, please contact  
Neutrik or its distributors directly on the following numbers:-  
UK: NEUTRIK MARKETING:  
USA: NEUTRIK USA INC.:  
0171 792 8188  
(201) 901 9488  
For a world wide list of distributors, please contact Neutrik directly:-  
+41 7529666  
NEUTRIK AG:  
Cable choice consists mainly of selecting the correct cross sectional area in relation  
to the cable length and the load impedance. A small cross sectional area would  
increase the cables series resistance, inducing power loss and response variations  
(damping factor).  
Connectors should be wired with a minimum of 2.5 sq. mm (12 gauge) cable. This  
will be perfectly satisfactory under normal conditions. In the case of very long cable  
runs the wire size should exceed this, refer to the following table for guidance:-  
CABLE RUN  
(m)  
C.S.A. OF EACH  
CONDUCTOR (mm)  
CABLE  
RESISTANCE W  
% POWER LOSS  
INTO 8W LOAD  
% POWER LOSS  
INTO 4W LOAD  
10  
2.5  
4.0  
6.0  
2.5  
4.0  
6.0  
2.5  
4.0  
6.0  
2.5  
4.0  
6.0  
0.14  
0.09  
0.06  
0.35  
0.22  
0.14  
0.69  
0.43  
0.29  
1.38  
0.86  
0.58  
1.7  
1.1  
0.73  
4.3  
2.7  
1.8  
8.6  
5.4  
3.6  
17.0  
11.0  
7.2  
3.5  
2.2  
1.5  
8.6  
5.4  
3.6  
17.0  
11.0  
7.2  
35.0  
22.0  
14.0  
25  
50  
100  
4. Polarity Checking  
It is most important to check the polarity of the wiring before the speaker system is  
used. A simple method of doing this without a pulse based polarity checker for LF  
units is as follows: Connect two wires to the +ve and -ve terminals of a PP3 battery.  
Apply the wire which is connected to the +ve terminal of the battery to the speaker  
cable leg which you believe to be connected to pin 1+ of the speaker connector and  
likewise the -ve leg of the battery to pin 1-.  
If you have wired it correctly the LF drive unit will move forward, indicating the wiring  
is correct. All that remains now is to connect the +ve speaker lead to the +ve  
terminal on the amplifier and the -ve lead to the -ve terminal on the amplifier. If  
however the LF driver moves backwards, the input connections need to be inverted.  
If problems are encountered, inspect the cable wiring in the first instance. It should  
also be noted that different amplifier manufacturers utilise different pin configurations  
and polarity conventions, if you are using amplifiers from more than one  
manufacturer, check the polarity at the amplifiers as well as the loudspeakers.  
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5. Amplification & Power Handling  
As with all professional loudspeaker systems, the power handling is a function of  
voice coil thermal capacity. Care should be taken to avoid running the amplifier into  
clip (clipping is the end result of overdriving any amplifier). Damage to the  
loudspeaker will be sustained if the amplifier is driven into clip for any extended  
period of time. Headroom of at least 3dB should be allowed. When evaluating an  
amplifier, it is important to take into account its behaviour under low impedance load  
conditions. A loudspeaker system is highly reactive and with transient signals it can  
require more current than the nominal impedance would indicate.  
Generally a higher power amplifier running free from distortion will do less damage to  
the loudspeaker than a lower power amplifier continually clipping. It is also worth  
remembering that a high powered amplifier running at less than 90% of output power  
generally sounds a lot better than a lower power amplifier running at 100%. An  
amplifier with insufficient drive capability will not allow the full performance of the  
loudspeaker to be realised.  
It is important when using different manufacturers’ amplifiers in a single installation  
that they have very closely matched gains, the variation should be less than +/-  
0.5dB. This precaution is important to the overall system balance when only a single  
active crossover is being used with multiple cabinets, it is therefore recommended  
that the same amplifiers are used throughout.  
6. Crossovers  
The i15 is supplied as standard for passive operation via the internal crossover  
network. If higher peak outputs are required then the i15 can be used in conjunction  
with the Tannoy TX2 controller/crossover which provides high pass filtering and a  
degree of parametric equalisation (see performance data section), as well as a fixed  
crossover point for use with sub-bass loudspeakers.  
7. Equalisation  
The i15 is designed to need no equalisation or correction to overcome system  
limitations. As a result, it will only need equalisation to compensate for difficult  
acoustic environments.  
Excess equalisation can reduce system headroom, and introduce phase distortion  
resulting in greater problems than it cures. If equalisation is required then it should be  
applied gently and smoothly. Violent equalisation will be detrimental to the overall  
sound quality.  
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8. Dimensions  
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9. Rigging  
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10. Performance Data  
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11. Technical Specifications  
Frequency Response (1) +/- 3dB  
60Hz - 22kHz  
37Hz - 22kHz (with Tx2 controller)  
Recommended Amplifier Power  
Power Handling(2)  
250 - 500 watt / 8 ohm  
Average  
250 watt  
Programme Peak (10ms)  
500 watt 1000 watt  
Sensitivity (1)  
2.83 volt @ 1m  
99 dB  
Maximum SPL (3)  
@ 1m  
Average  
123 dB  
Peak  
129 dB  
Impedance  
Nominal  
Minimum  
8.0 ohm  
6.0 ohm  
DI Averaged (PCQ)  
@ 1kHz (ISO)  
@ 2kHz (ISO)  
@ 4kHz (ISO)  
@ 8kHz (ISO)  
@ 16kHz (ISO)  
9.97, 500 Hz - 16 kHz  
8.5  
9.1  
9
12.5  
14.15  
Q Averaged (PCQ)  
@ 1kHz (ISO)  
@ 2kHz (ISO)  
@ 4kHz (ISO)  
@ 8kHz (ISO)  
@ 16kHz (ISO)  
11.92, 500 Hz - 16 kHz  
7.1  
8.1  
7.9  
17.8  
26  
Distortion  
0.1 Full Power  
250 Hz  
2nd Harmonic  
0.18%  
1.77%  
3rd Harmonic  
0.44%  
1.77%  
0.11%  
1000 Hz  
10000 Hz  
1.58%  
0.01 Full Power  
250 Hz  
2nd Harmonic  
0.09%  
3rd Harmonic  
0.09%  
1000 Hz  
0.50%  
0.71%  
10000 Hz  
0.56%  
Below measurement limit  
Driver Complement  
Crossover Point  
1 x 15” (381mm) Constant Directivity Dual Concentric  
Type number 3804  
Passive 1.6kHz  
3rd order high pass, 2nd order low pass  
Halogen HF protection  
Enclosure  
Finish  
65 litre vented, MDF  
Textured black\grey paint  
Connectors  
Fittings  
2 x Speakon NL4MPR IN/OUT  
8 x M8 flying inserts & 1 x M8 pullback point  
Dimensions  
590mm(H) x 450mm(W) x 420mm(D)  
23.2ins(H) x 17.71ins(W) x 16.54ins(D)  
Weight  
24 Kg (52.8 lbs)  
NOTES:  
(1) Average over stated bandwidth. Measured at 1m on axis, in an anechoic chamber.  
(2) Long term power handling capacity as defined in EIA standard RS - 426A.  
(3) Unweighted pink noise input, measured at 1m in half space conditions.  
Tannoy operate a policy of continuous research and development. The introduction of new materials or manufacturing  
methods will always equal or exceed the published specifications which Tannoy reserve the right to alter without prior notice.  
Please verify the latest specifications when dealing with critical applications.  
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12. i15 Service Parts & Accessories  
Part Number  
7900 0463  
7900 0464  
7900 0199  
7300 0570  
7900 0442  
8000 0647  
8000 0671  
8000 0630  
Description  
Driver Kit - 3804  
Recone Kit - 3804  
HF Diaphragm Kit  
Crossover Kit - 1225  
Paint - Touch up Black-Grey  
Flying Kit ( 3 x M8 Eyebolts )  
Wall Mounting Bracket  
TannoyTX2 Active System Controller/2-way Stereo Crossover  
13. Warranty  
No maintenance of the i15 loudspeaker is necessary.  
All Tannoy professional loudspeaker products are covered by a 5 year warranty from  
the date of manufacture subject to the absence of misuse, overload or accidental  
damage. Claims will not be considered is the serial number has been altered or  
removed. Work under warranty should only be carried out by a Tannoy Professional  
dealer or service agent. This warranty in no way affects your statutory rights. For  
further information please contact your dealer or distributor in your country. If you  
cannot locate your distributor please contact Customer Services, Tannoy Ltd at the  
address given below.  
Customer Services  
Tannoy Ltd.  
Rosehall Industrial Estate  
Coatbridge  
Strathclyde  
ML5 4TF  
Scotland  
Telephone:  
Fax:  
01236 420199  
+44 1236 420199  
01236 428230  
(National)  
(International)  
(National)  
+44 1236 428230  
(International)  
e-mail:  
DO NOT SHIP ANY PRODUCT TO TANNOY WITHOUT PREVIOUS AUTHORISATION  
Our policy commits us to incorporating improvements to our products through  
continuous research and development. Please confirm current specifications for  
critical applications with your supplier.  
EASEÔ Data for Tannoy Professional products available on request.  
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14. Wall Mounting Bracket - Assembly Instructions  
A dedicated wall mounting bracket (Part No. 8000 0671) is available for the i15.  
The design of the bracket allows the loudspeaker to mounted either in portrait or  
landscape orientation:-  
Landscape mounting - Remove two of the original M8 countersunk screws on one  
side of the cabinet, place the T- Bar in position and fix in place using the two cap-  
head bolts which are included along with the bracket hardware, remembering to use  
the washers and locking washers which are also provided. Assemble the bracket as  
shown on the diagram below. It is imperative that the bracket is fixed soundly to the  
wall. Be sure to use the correct fixings (e.g. Rawbolt, Rawplug) according to the wall  
type.  
Portrait mounting - Using a hacksaw, cut along the indents on the T-bar. Carry out  
the above instructions, removing two of the original M8 countersunk screws on top of  
the cabinet.  
Exploded View of Bracket  
Assembled View of Bracket  
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Declaration of Conformity  
The following apparatus is/are manufactured in the United Kingdom by Tannoy Ltd  
of Rosehall Industrial estate, Coatbridge, Scotland, ML5 4TF and conform(s) to the  
protection requirements of the European Electromagnetic Compatibility Standards  
and Directives relevant to Domestic Electrical Equipment. The apparatus is  
designed and constructed such that electromagnetic disturbances generated do not  
exceed levels allowing radio and telecommunications equipment and other  
apparatus to operate as intended, and, the apparatus has an adequate level of  
intrinsic immunity to electromagnetic disturbance to enable operation as specified  
and intended.  
Details of the Apparatus:  
Tannoy Contractor Loudspeaker  
Model Number: i15  
Associated Technical File:  
Applicable Standards:  
EMCi15  
EN 50081-1 Emission  
EN 50082-1 Immunity  
Signed:  
Position:  
Technical Manager  
Tannoy Professional  
Date:  
16th July 1998  
For Tannoy Ltd  
Tannoy Loudspeakers are manufactured  
in Great Britain by :  
Tannoy Ltd, Rosehall Industrial Estate, Coatbridge,  
Strathclyde, ML5 4TF, SCOTLAND  
Telephone: +44 (0)1236 420199 Fax: +44 (0)1236 428230  
Tannoy North America Inc. 335 Gage Avenue, Kitchener, Ontario, CANADA, N2M 5E1  
Telephone: (519) 745 1158 Fax: (519) 745 2364  
Tannoy Nederland BV, Anthonetta Kuijlstraat 19, 3066 GS, Rotterdam THE NETHERLANDS  
Telephone: (010) 2860554 Fax: (010) 2860431  
Issue 3 Part No. 6481 0285  
GH 14th April 1997  
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