Print, leer, nur 2-fach-Nutzen erhltlich Print, leer, nur 2-fach-Nutzen erhltlich Stiftenleiste, 8 polig Stiftenleiste, 5 polig Schalterblende Schalterblende Ausgangstrafo U66 Widerstand 19,6 k, 1% Widerstand 56,2 k, 2% Widerstand 33,2 k, 1% Widerstand 2,2 M, 5% Widerstand 3,3 k, 1% Kondensator 2,2 nF, 25V, 20% Kondensator 220 pF, 100V, 2% Kondensator 1 F, 250V Zenerdiode BZX55C 9,1 V Schalter Schalter

Alle Toleranzen +/-

Cable / Kabel; Pos. 20; 2522K0002. new/neu (0001. old/alt)
XLR JP3 black, connected to ground white orange red brown green schwarz, verbunden mit Masse. wei orange rot braun grn 5 (1) (2) (3) (4) (5) Ground, Screen / Masse, Schirm AF / NF (inphase) Filament / Heizung Filament / Heizung Plate voltage / Anodenspannung AF / NF

Page/Seite 3 of/von 11

Technical Data: Transmission range Open loop sensitivity @ 1 kHz Output Impedance (20.20 kHz) Permissable load Equivalent noise level Weighted noise level 3 Veff Climate conditions Rel. humidity
Technische Daten: 20.18.000 Hz bertragungsbereich 20 mV/Pa (= -34 dBV) Leerlaufbertragungsfaktor @ 1kHz 200 Ohm Ausgangsimpedanz (20.20 kHz) >2.000 Ohms Zulssiger Abschlu 17,5 dBA (DIN45412) Ersatzgeruschpegel 5 Vp (CCIR468, DIN45405) Bewertete Strspannung (IEC651, DIN 45412) - 10.+ 60 C Temperaturbereich 90 % @ 20C, 85% @ +60C Relative Feuchte
*****************************

How to dismantle:

1.) Undo the three screws 19 and pull out mic assembly of housing 15 as far as possible. Unplug XLR connector cable 20 from board 6 and remove housing 15. 2.) To change the XLR wall mount connector remove the two screws 21 and pull out connector 20.1. ATTENTION: If not otherwise necessary, never undo screw 18 (ground connection of housing). Reinstalling the screw with toothed washer 17 and solder tag is extremely difficult and a special magnetic clamp screwdriver is necessary. 3.) To remove board 6 loose screw 11 and spacer 9. Separate holder 8 from board taking care that nut 10 does not get lost. Disconnect board 6 from board 5. The tube 7 can easily be exchanged now. 4.) Two methods are possible for access to board 5. Either the two contact posts for the capsule terminals have to be cut directly above the board. The board itself can then easily be removed by slightly pressing the plastic latch (marked with * in drawing on page 1) of the contact assembly 4 outwards. This method is easy but the contact assembly 4 afterwards needs to be renewed. The second possibility is without destroying part 4 but needs careful processing. The solder around the contact posts on board 5 has to be removed using "solderwick". Ensure that solder is completely removed from the respective pcbs solder points and from the 2 posts. Then disengage the latch and turn out board by slipping it off the contact posts. After removal of the board the contact assembly can be pulled out from frame 3. 5.) The cap 13 is removed by holding the microphone at frame 3, turning the cap clockwise and taking it off (bayonet lock). 6.) When reassembling the microphone mind the following hints: The board 6 is mounted with the components facing the tube 7. Before you do this, insert the spacer 9. The XLR connector cable is threaded through the open lower end of the frame 3. Take care not to damage the fine copper wire of transformer T1 when connecting the cable to the board. The three screws 19 are self tapping. Please take care that the screws find their correct way into the already cut thread in frame 3. If the screws cannot easily be turned try to carefully turn them counterclockwise until they drop into the first gang of the counter thread.

Page/Seite 4 of/von 11

Trouble shooting:
Microphone shows significant hum: a.) If hum increases when bass attenuator is activated: replace coil L1 b.) If hum varies when mic body or cap is touched with hand: check ground connection between cap and housing. Open microphone and carefully scrape out the inner side of the housing 15 and the surface of the cap 13 where it makes contact to the housing. If necessary clamp a piece of copper foil or thin bare stranded wire between cap and housing. Since some while a contact spring is used to ensure a faultless ground connection. Microphone works intermittently, shows hum or crackling noise: a.) Check connector 20.1 on microphone for loose contact pins replace connector. NOTE: Wiring between the microphones XLR connector and the internal connector has been changed. Please refer to table on page 3. If necessary change wiring. Otherwise the microphone or the power supply may be damaged. Should the contacts of the XLR connector already be covered with sealing compound it is necessary to cut the respective wires and solder them in correct order. Please ensure good insulation of the solder points. If you exchange only the XLR connector please cover the contacts after soldering with hot melt adhesive. b.) Check the microphone cable's connectors for loose contacts or broken solder points. c.) Check the microphone socket in the N-SOLIDTUBE for loose contacts. Please note that the wiring between the 6 pole XLR and the internal connector has been changed and the now used cable assembly will not work on very old N-SOLIDTUBES. Please compare wiring diagram on page 10 and change wires on the XLR if necessary. Repeatedly blown fuse in power supply: Check varistors RV1 and RV2 in the power supply and the mains transformer. In case of a defective mains transformer please always also replace varistors RV1 and RV2.
CAUTION: The sign "!" in the parts list marks a component specified for safety reasons. It shall be replaced only by the original AKG spare part. Fuses shall be replaced by the same type and value for continued protection against risk of fire. Zerlegeanleitung:
1.) Schrauben 19 entfernen und Mikrofon soweit wie mglich aus dem Gehuse 15 ziehen, Steckverbindung zwischen dem Steckerkabel 20 und Print 6 lsen und Gehuse 15 entfernen. 2.) Zum Tausch des XLR-Steckers, lsen Sie die Schrauben 21 und ziehen sodann den Stecker nach unten aus dem Gehuse. ACHTUNG: Falls nicht unbedingt notwendig, lsen Sie bitte niemals die Schraube 18 (Masseverbindung zum Gehuse). Das Wiedereinsetzen von Schraube, Zahnscheibe 17 und Ltfahne ist extrem schwierig und nur mit einem magnetischen Klemmschraubenzieher mglich. 3.) Um den Print 6 zu entfernen mssen Schraube 11 und Abstandsbolzen 9 entfernt werden. Die Halterung 8 kann dann vom Print abgenommen werden. Bitte dabei Mutter 10 nicht verlieren! Ziehen Sie nun den Print 6 vom Print 5 ab. Die Rhre 7 kann nun leicht getauscht werden. 4.) Um den Print 5 zugnglich zu machen, bieten sich zwei Mglichkeiten an. Am einfachsten zwickt man die beiden Kontaktstifte zur Kapsel knapp oberhalb der Prints ab und entfernt diesen bei gleichzeitigem herausdrcken der Kunststoffklinke (markiert mit * in Zeichnung auf Seite 1) des Kontakttrgers 4. Diese Methode fhrt allerdings zur Zerstrung des Kontakttrgers und bedingt daher einen Tausch desselben. Die andere Mglichkeit besteht darin, mit Ltsauglitze das Zinn an den Ltstellen der Kontaktstifte am Print 5 und auf den Stiften selbst komplett zu entfernen. Dann kann der Print von den Kontaktstiften abgehoben werden, wobei man wieder gleichzeitig die Sperrklinke nach vorne drcken muss.

Reinigungshinweise:

Alle Oberflchen knnen von Zeit zu Zeit problemlos mit (Industrie-) Spiritus oder Alkohol gereinigt werden. Der Schaumstoff-Windschutz wird am besten mit einer milden Waschmittellsung gereinigt und ist sofort nach dem Trocknen wieder einsatzbereit.

3. Technische Daten

Arbeitsweise: Richtcharakteristik: Empfindlichkeit bei 1000 Hz: bertragungsbereich: Elektrische Impedanz: Empfohlene Lastimpedanz: Vorabschwchung: Baabschwchung: Ersatzgeruschpegel nach DIN 45405 (CCIR 468-2): quivalentschalldruckpegel nach DIN 45412 (A-bew.): Geruschpegelabstand bezogen auf 1 Pa (A-bew.): Grenzschalldruck fr k = 3%: (Vorabschwchung 0 / 20 dB) Speisung: Steckverbindung: uere Abmessungen: Gewicht: Bruttogewicht, inkl. Verpackung: Gromembran-Druckgradient-Mikrofon mit Rhren-Vorverstrker Niere 20 mV / Pa 43 dBV bez. auf 1 V / Pa 2020.000 Hz 2,5 dB von Sollkurve 200 Ohm 25% 1000 Ohm schaltbar auf 0 dB und 20 dB bei 100 Hz 12 dB / Oktave, einschaltbar am Netzgert 30 dB 20 dB-A 74 dB 63 Pa 031dB SPL / 355 Pa 541dB SPL mit dem im Lieferumfang enthaltenen Netzgert N-SOLIDTUBE ber 115/230 VAC, 15/10% (5060 Hz) 6 pol. XLR 63/57 x 219 mm 920 g, netto 5,0 kg, inkl. Zubehr und Tragekoffer
Dieses Produkt entspricht den Bestimmungen der europischen Richtlinien fr elektrische Sicherheit und elektromagnetischer Vertrglichkeit nach den angewandten Normen EN 61 000-6-1:2001, EN 61 000-3-3:2001, EN 60 065:2002, sowie UL 6500.

Frequenzkurve

Polardiagramm

Mitgeliefertes Zubehr:

N-SOLIDTUBE, Netzgert MK-SOLID, 10 m Anschlukabel H-SOLID, Elastische Halterung W-SOLID, Schaumstoffwindschutz EUR-Netzkabel US-Netzkabel Stabiler Transportkoffer

Empfohlenes Zubehr:

PF 80, Studio Popschutzfilter St 102 A, Bodenstativ St 200, Bodenstativ
IMPORTANT SAFETY INSTRUCTIONS
Please read, follow and keep these instructions for later consultations. Please heed all warnings for your own safety! Do not block any ventilation openings on the power supply unit and do not install the unit near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat! Do not use this device near water! Clean the power supply unit from time to time with a damp cloth only! Do not defeat the safety purpose of the grounding type plug on the power cord! A grounding type plug has two blades and a third grounding prong. This third prong is provided for safety. When the provided plug does not fit into your power outlet, consult an electrician for replacement of the obsolete outlet. Should another type of power plug be usual in a country in which the unit is to be operated then you should buy and use in that country a complete power cord which complies with the international safety regulations and which has a plug with device grounding! Protect the power cord from being walked on or pinched particularly at plugs and convenience receptacles. Use only attachment/accessories specified by the manufacturer! Unplug this apparatus during lighting storms or when unused for long periods of time! Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. CAUTION: RISK OF FIRE! Should the fuse in the power supply unit ever be damaged, replace with the same Type "T 0.125A, 250V" fuse!

1. The Microphone

The SOLIDTUBE was developed because of the great demand for the so-called tube sound in a price range suitable for many people, to which it goes without saying that our special know-how in the production of large-diaphragm microphones has had its influence. It should be stressed at this point that the vacuum tube used with its inbuilt heater element is significantly more sensitive to mechanical shocks than is transistor technology. Therefore, the user of this
microphone should always exercise the greatest care and attention. Even shocks caused by falls from low levels can lead to the breaking of the hot heating element and, consequently, to the total failure of the microphone. It is advisable, therefore, to buy and keep in reserve a spare tube which you can get in any good music shop which sells, for example, guitar amplifiers, or in the next AKG Service Center. The microphone incorporates an ECC 83 (12AX7) vacuum tube. Be sure to use replacement tubes of the same type only. 7
How is the tube replaced?
IMPORTANT: Prior to disassembling the microphone, make sure to disconnect the microphone from the N 12 VR power supply. Remove the three Philips head screws visible on the underside (connector side) of the housing and push the lower half of the housing downwards so far from the upper grid cap part until the vacuum tube is exposed. This can now be removed by carefully pushing away the lower part of the elasticated cushioning for the tube and, simultaneously, carefully levering the tube out of the socket with a small flat screwdriver. Inserting a new tube is done in reverse order of the above description. Finally, please push the lower part of the housing forwards again to the grid part and, while doing so, take care that the attenuator switch remains free so that the three Philips head screws can be screwed in again fully and tightly. If you should have doubts as to whether you can carry out the procedure described above without help then consult with confidence the nearest AKG Service Center.
connections. It may also be swivelled against the stand axis in order to position the microphone optimally for recording. Only in exceptional cases for example, on loss or breakage of parts of the elastic shockmount should the microphone be screwed on to stands or booms directly with the screw adapter on the lower part of the housing. By doing this, the impact sound absorbing effect of the shockmount is, naturally, lost. Therefore, replacement of this important accessory part should be obtained as quickly as possible.

Powering the microphone:

The N-SOLIDTUBE power supply unit needed for the powering is included in the delivery. From the type of connector and the markings on the rear of the power supply unit housing, it is easy to see how the microphone should be connected to the power supply. For this, please use only the 10 m (30 ft.) long multi-core cable MK-SOLID which is likewise included in the delivery. The audio can likewise be taken balanced from the power supply unit by means of an XLR-3 connector.
How is the microphone mounted?
A special elastic shockmount H-Solid is supplied and should always be used to connect the microphone to floor stands or booms. The clamp of the shockmount is pushed on to the microphone from below while turning gently until the SOLIDTUBE type block can be seen again below the clamp. This makes it impossible for the microphone to slide out of the mounting unintentionally because this is prevented, on the one side, by the raised type block and, on the other side, by the grid cap with its larger external diameter. Intentional removal of the microphone from the shockmount is then only possible by simultaneously turning and pulling the microphone body away from the shockmount. After fitting the microphone into the shockmount, it can be screwed on to stands or booms with standard 3/8 or 5/8 inch threaded 8
On the operation of the microphone:
The SOLIDTUBE is equipped with a large diaphragm capsule with cardioid characteristics which can thus handle nearly all tasks occurring in recording studios. Although the microphone is provided with an built-in pop screen, an adequate distance to the microphone of at least 20 to 30 cm (approx. 1 ft.) should be maintained, or the W-SOLID wind/pop screen supplied should be used in order to prevent unwanted popping noises on the sensitive microphone diaphragm, especially when using the microphone for singing. Another way to prevent popping noises is by using the StudioPopfilter PF 80 which can be obtained as an option from AKG. After switching on the microphone power on the power supply unit,
please allow a few minutes for the tube to warm up so as to get the full, warm tube sound. If the microphone should be used with extremely loud sources of sound e.g. in front of guitar amplifier speakers etc., then it is advisable to push the attenuation switch on the microphone housing downwards to the 20 dB position. With this you can be certain that any distortions do not come from the microphone but either from the sound source itself or from the equipment connected after the microphone such as, for example, input stages of mixing consoles or other causes.

over of the accepted operating voltage should be necessary then this can be done very easily with a small flat-bladed screwdriver.
Before doing this, please remove the mains connection cable from the mains supply!
Place the screwdriver in the notch provided for this on the fuse holder, press the spring-loaded tongue gently to the right in the direction of the voltage indicator and lever the whole fuse holder out of the socket. Then, please pull the light plastic part with the fuse out of the carrier part, turn the fuse link through 180 and insert it again in the carrier part until it engages. The desired mains voltage should now appear in the window. The complete carrier part can then be inserted into the socket again until this also engages. You can also proceed in exactly the same way should the unit fuse ever be damaged. WARNING: Make sure to replace the built-in fuse with a standard fuse of the same type only. Using any other type of fuse may cause excessive heating and/or a risk of fire. Should another type of power plug be usual in a country in which the unit is to be operated then you should buy and use in that country a complete power cable which complies with the international safety regulations and which has a plug with device grounding. Prior to connecting the equipment to power, check that the power outlet is a standard type with a protective ground connection. Disconnecting the protective ground lead or using non-standard power plugs or non-standard power outlets is illegal. If all the above checking steps have been completed, the connecting cable has been plugged in between the microphone and the power supply, the audio connection to the after-connected equipment has been made with standard audio cable, and the plugged-in power cable 9
2. The N-SOLIDTUBE Power Supply Unit
SAFETY INSTRUCTIONS: Use the equipment in dry rooms only. Do not expose the equipment to rain or splash water. Never place objects containing liquids (e.g., vases) on or near the equipment. The power supply unit does not only supply the vacuum tube with heater and anode voltage but also contains the switchable bass cut for the microphone at about 100 Hz in order to be able to filter out possible low frequency interference noise components. The control knob for this is found on the front of the power supply. For any external wiring, do not use any cables other than those recommended in this manual.

PLEASE OBSERVE CLOSELY!

Dangerous voltages occur in the N-SOLIDTUBE. Opening the mains unit must definitely, therefore, be done only by qualified service personnel. WARNING: Parts inside the equipment may carry dangerous voltages. Make sure to disconnect the equipment from power before opening the equipment! Before starting-up the power supply unit please satisfy yourself about the local mains voltage and compare this with the value set on the units voltage selector (next to the power switch). If a change-

has been connected to a power socket, then both the control light on the front of the power supply should light up after switching on the power supply unit mains switch and also the tubes heating element should glow red-orange through the window (AKG logo) on the microphone itself. With this the microphone is essentially ready for operation. Note: A gentle humming noise can sometimes occur on the audio output due to ground loops which, as an initial remedy, can possibly be removed with the Ground Lift switch by the audio output socket on the power supply. When pressed, this switch interrupts
the connection from pin 1 of the XLR socket to the zero volt / ground level of the power supply unit. Should this measure provide no remedy for the interfering hum then you must locate and remove the cause of the interference from the rest of the sound system in the usual way.

Cleaning information:

All surfaces can be cleaned from time to time with (industrial) methylated spirits or alcohol. The foam windscreen is best cleaned with a mild detergent solution and is immediately ready for use when dry.
3. Technical Specifications
Operating principle: Directional characteristics: Sensitivity at 1000 Hz: Frequency range: Electrical impedance: Recommended load impedance: Pre-attenuation: Bass cut: Equivalent noise level conforming to DIN 45405 (CCIR 468-2): Equivalent noise level conforming to DIN 45412 (A-weighted): Signal-to-noise ratio ref. 1 Pa (A-weighted): Max. sound pressure for k = 3%: (pre-attenuation 0/20 dB) Powering: Connector: External dimensions: Weight: Gross weight incl. packaging:
Large diaphragm pressure gradient microphone with vacuum tube preamplifier Cardioid 20 mV / Pa 43 dBV re. 1 V / Pa 2020,000 Hz 2.5 dB from published curve 200 ohms 25% 1000 ohms Switchable to 0 dB and 20 dB At 100 Hz 12 dB / octave, can be switched-on on the mains unit 30 dB 20 dB-A 74 dB 63 Pa 031 dB SPL / 355 Pa 541 dB SPL With the delivered N-SOLIDTUBE power supply unit via 115 / 230 VAC, 15/10% (5060 Hz) 6 pin XLR 63/57 x 219 mm (2.5/2.25 x 8.6 inch) 920 g (2 lbs.) net 5.0 kg (11 lbs.) incl. accessories and travelling case
This product conforms to the specifications of the European Union EMC and Low Voltage Directives in accordance with applied standards EN 61 000-6-1:2001, EN 61 000-3-3:2001, EN 60 065:2002, as well as UL 6500. 10

Frequency Response Curve

Polar Response Curve